JP5495576B2 - Door stopper - Google Patents

Description

  The present invention relates to a door stopper that positions a door at a predetermined rotational position.

A door stopper that positions a rotatable door at a predetermined rotation position is known.
A normal door stopper protrudes in a columnar shape from the floor, and when the door is rotated in the door opening direction, the door side face comes into contact with the door stopper and is positioned.
Thereby, the further rotation of the door in the opening direction is restricted, and the door is prevented from opening too much and colliding with a surrounding wall surface or the like.

By the way, in a state where the door is simply applied to the door stopper and the doorway is opened, if the door is blown by wind, the door may rotate in the closing direction and the doorway may be closed unexpectedly.
For example, when moving or under construction, it is necessary to keep the entrance / exit open for convenience of loading and unloading luggage and building materials.
Therefore, it is inconvenient to close the entrance and exit unintentionally and reopen the door each time.

In view of this, the door stopper of Patent Document 1 has been proposed in which the door can be locked in a non-rotatable direction in the door closing direction with the door applied to the door stopper.
In the door stopper of this patent document 1, it is necessary to push a switch attached to the door stopper in order to release the lock in order to close the door.
In order to push such a switch, it is necessary to crouch so that the hand can reach the door stopper from a state where the door knob is standing and holding the door knob. It is very cumbersome to squat down each time you unlock.

JP 2008-57224 A

  Therefore, the problem to be solved by the present invention is to allow the door stopper with a door locking function to be easily performed while the unlocking operation is standing.

  In order to solve the above-described problems, the door stopper of the present invention locks the pivotable door so that it cannot pivot in the closing direction at a predetermined pivot position, and further pushes the door in the opening direction from the pivot position. In this way, a mechanism that can release the lock and turn in the closing direction is arranged on the door side.

Specifically, a stopper body attached to the floor or ceiling and facing the side of the door;
A slider that is slidably supported in the door opening / closing direction on the side of the door, and is pushed back by the stopper body according to the rotation of the door in the door opening direction;
A spring for urging the slider in the forward direction;
A claw, which is supported on the side of the door and formed at the tip of the door, approaches and engages with the stopper main body in conjunction with the backward movement of the slider, and separates from the stopper main body in conjunction with the forward movement of the slider. A latch that unlocks,
A heart cam supported on a door side surface and formed with a cam groove curved in a substantially heart shape on a surface facing the slider;
One end in the longitudinal direction is rotatably supported with respect to the slider, and a guide pin formed at the other end in the longitudinal direction includes a link that fits into the cam groove of the heart cam.

Here, the cam groove of the heart cam extends obliquely rearward from the starting point, and the forward path that guides the guide pin of the link in the backward direction according to the rotation of the door in the door opening direction,
A lock portion that is recessed obliquely forward in succession to the rear end of the forward path, and that prevents the link guide pin from engaging when the latch claw is engaged with the stopper body, thereby preventing the door from rotating in the door closing direction. When,
A release part that guides the guide pin of the link so as to come out of the lock part when the door that protrudes obliquely rearward from the lock part and is prevented from turning in the door closing direction is turned in the door opening direction. When,
Continuing from the release portion, it extends obliquely forward, returns to the starting point, and includes a return path that guides the guide pin of the link in the forward direction as the door rotates in the door closing direction.

With the above configuration, when the door is rotated in the door opening direction, the slider is pushed by the stopper main body, and the claw of the latch approaches and engages with the stopper.
At this time, the guide pin of the link that follows the slider is guided obliquely rearward through the forward path of the cam groove and fits into the lock portion.
Therefore, the guide pin is locked at the position where the latch claw is engaged with the stopper body, and the door cannot be turned in the closing direction. Therefore, the doorway will not be closed without permission even if the door is covered with wind.
When the door is further pushed slightly in the opening direction from this state, the guide pin of the link is guided by the release portion of the cam groove and escapes from the lock portion to the return path.
Therefore, the latch claw can be separated from the stopper main body, and when the door is slightly returned in the closing direction, the stopper main body comes out from between the claws and the engagement is released.
Thereafter, the guide pin of the link can be guided obliquely forward through the return path, so that the door can freely rotate in the closing direction.
As described above, since the door is locked, the lock is released by only slightly pushing in the door opening direction, and the door can be rotated in the door closing direction. Therefore, the user can easily operate while standing.

  As a more detailed configuration, for example, the latch is supported on the side surface of the door so as to be swingable around a support shaft that is substantially parallel to the floor surface or the ceiling surface, and is loosely fitted to the slider and interlocks with the advancement and retraction of the slider. And preferably swing.

  Alternatively, the slider has a cam surface that is inclined up and down on a surface facing the latch, the latch is supported on the side of the door so as to be slidable in the vertical direction of the door, and the slider is advanced and retracted by the cam surface. It is preferable to be guided up and down in conjunction with.

  Further, the stopper is made of a magnetic material, and can be rotated between a standing position facing the side surface of the door and a lying position retracting from the side surface of the door, and the stopper main body in the lying position is placed on the door side surface. It is preferable to employ a configuration including a magnet that is rotated to a standing position by a magnetic force.

If comprised in this way, since a floor surface or a ceiling surface will become substantially flat by usually lying down a stopper main body, it will not become obstructive at the time of cleaning.
When the stopper main body is attached to the floor, the floor surface becomes almost flat due to the fall and the barrier-free property is improved.

  Since the door stopper according to the invention is configured as described above, the door can be easily unlocked while standing.

The perspective view of the door stopper of embodiment (A) is side sectional drawing of the door stopper of 1st embodiment, (b) is IIb-IIb sectional drawing of (a). Is a perspective view showing the assembled state of the slider, latch, link and spring (A) is side sectional drawing which shows operation | movement of the door stopper of 1st embodiment, (b) is IVb-IVb sectional drawing of (a). (A) is side sectional drawing which shows operation | movement of the door stopper of 1st embodiment, (b) is Vb-Vb sectional drawing of (a). (A) is side sectional drawing which shows operation | movement of the door stopper of 1st embodiment, (b) is VIb-VIb sectional drawing of (a). (A) is side sectional drawing which shows operation | movement of the door stopper of 1st embodiment, (b) is VIIb-VIIb sectional drawing of (a). (A) is side sectional drawing which shows operation | movement of the door stopper of 1st embodiment, (b) is VIIIb-VIIIb sectional drawing of (a). (A) is side sectional drawing of the door stopper of 2nd embodiment, (b) is IXb-IXb sectional drawing of (a). Is a perspective view showing the assembled state of the slider, latch, link, spring, push pin, latch guide

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

The door stopper according to the first embodiment can lock a pivotable door that opens and closes a room entrance / exit, a closet, and the like so as not to pivot in a closing direction at a predetermined pivot position.
Further, when the door is further pushed in the door opening direction from the locked predetermined rotation position, the lock is released and the state returns to the state in which the door can be turned in the door closing direction.

  As a specific configuration of the door stopper, as shown in FIG. 1, a stopper body 10 is attached to the floor F, and a member 20 to a door C other than the stopper body is formed on a casing C attached to a side surface of the door D. 70 is stored.

More specifically, as shown in FIGS. 1 and 2, a flat washer B is fixed to the floor surface with a bolt or the like, and the stopper main body 10 is attached to the floor via the washer B.
The plate-shaped stopper body 10 is made of a material adsorbing to the magnet (for example, magnetic stainless steel), and its base end is hinged to the washer B, so that the standing position rising from the floor surface is almost flush with the floor surface. It can be freely rotated between positions.
Here, in the standing position, the stopper body 10 faces the side of the door, and in the lying position, the door D can pass over the stopper body 10.
Moreover, the front-end | tip part of the stopper main body 10 is the latching | locking part 11 which swells below by folding a plate below.

On the other hand, as shown in FIGS. 1 and 2, a casing C is fixed to the lower edge portion of the door side surface facing the stopper body 10 with bolts or the like.
The casing C houses and supports the magnet 20, the slider 30, the spring 40, the latch 50, the heart cam 60, and the link 70 that constitute the door stopper.
The casing C may be covered with a cover from above to enhance the decorativeness.

Further, as shown in FIG. 2, a magnet 20 is embedded in the lower surface front side of the casing C.
Therefore, when the door D rotates in the door opening direction and approaches the stopper main body 10 in the lying position, the stopper main body 10 can be automatically switched to the standing position by the magnetic force of the magnet 20.

As shown in FIG. 2, a block-shaped slider 30 is accommodated behind the magnet 20 in the casing C.
As shown in FIG. 3, guide portions 31 projecting are formed on both side surfaces of the slider 30, and the guide portions 31 are fitted in elongated holes formed on the left and right inner surfaces of the casing.
Therefore, the slider 30 can slide in the opening direction of the door D in the casing C. At the same time, the slider 30 is urged in the forward direction by a spring 40 loaded on the back side thereof.
A pressing piece 32 is formed on the front side of the lower surface of the slider 30, and the pressing piece 32 projects downward from the lower surface of the casing C.
Further, a slit for dividing the slider 30 into left and right is formed in the lower half portion of the slider 30, and a fitting shaft 33 penetrating in the left-right direction is provided in the slit.

As shown in FIGS. 2 and 3, the upper half of the L-shaped plate-shaped latch 50 is inserted into the slit of the slider 30.
The latch 50 has a rectangular window 51 at its upper end, and a slider fitting shaft 33 is loosely fitted in the window 51.
On the contrary, the same effect can be obtained by providing the slider 30 with a window and providing the latch 50 with a fitting shaft and loosely fitting them.
The latch 50 is supported by a swing shaft 52 that has a lower half portion penetrating the casing C in the left-right direction, so that the latch 50 can swing around the swing shaft 52.
Further, the lower end of the latch 50 is bent to the front side, and an upward claw 53 is formed at the tip thereof. Therefore, when the latch 50 swings in one direction, the claw 53 rises and approaches the lower surface of the casing C. When the latch 50 swings in the opposite direction, the claw 53 descends and separates from the lower surface of the casing C.
As shown in the figure, the claw 53 and the pressing piece 32 of the slider 30 face each other substantially vertically.
In addition, you may add the spring which urges | biases the rotation direction of the latch 50 to the direction which a nail | claw raises.

Further, a plate-shaped heart cam 60 is fixed above the slider 30 in the casing C as shown in FIG. An annular cam groove 61 is formed on the lower surface of the heart cam 60.
Specifically, as shown in FIG. 2B, the cam groove 61 is continuous with the forward path 61a extending obliquely rearward from the starting point, the lock portion 61b continuous to the rear end of the forward path 61a and recessed forward, and the lock portion 61b. Thus, the groove 61 is curved in a substantially heart shape as a whole, and includes a release portion 61 c that protrudes obliquely rearward and a return path 61 d that extends continuously obliquely forward to the release portion 61 c and returns to the starting point.

Further, a link 70 is disposed between the slider 30 and the heart cam 60 in the casing C.
A support pin 71 extending downward is provided on one end side in the longitudinal direction of the link 70, and this support pin 71 is fitted in a shaft hole provided on the upper surface of the slider. Thereby, the link 70 is supported so as to be rotatable with respect to the slider 30.
On the contrary, the slider 30 may be provided with a support pin and the link 70 may be provided with a shaft hole.
A guide pin 72 extending upward is provided on the other end side of the link 70, and the guide pin 72 is fitted in the cam groove 61 of the heart cam 60.
As described above, when the slider 30 advances and retracts, the link 70 also advances and retracts while rotating around the support pin 71, whereby the guide pin 72 on the other end side is guided along the cam groove 61 of the heart cam 60. .

The structure of the door stopper of the first embodiment is as described above. Next, the operation when locking the door D will be described. First, the door D is rotated in the door opening direction as shown in FIG.
Then, the stopper main body 10 in the lying position is rotated with respect to the washer B by the magnetic force of the magnet 20 and switched to the standing position.
At this time, the guide pin 72 of the link 70 is located at the starting point of the cam groove 61 of the heart cam 60 as shown in FIG.

As shown in FIG. 5A, when the door D is rotated as it is, the tip of the stopper body 10 hits the pressing piece 32 of the slider 30 protruding from the lower surface of the casing C, and the pressing piece 32 is pushed to move the slider 30 in the backward direction. Slide.
As the slider 30 slides, the fitting shaft 33 on the side surface engages with the rear hole edge of the window 51 of the latch 50.
When the slider 30 is further retracted, the fitting shaft 33 pushes the window hole edge above the swing shaft 52 of the latch 50 backward, so that the latch 50 rotates in the direction in which the pawl 53 rises.

  At this time, the link 70 supported by the slider 30 also moves backward while rotating around the support pin 71. Therefore, as shown in FIG. 5B, the guide pin 72 of the link 70 is guided rearward along the forward path 61 a from the starting point of the cam groove 61.

As described above, when the claw 53 of the latch 50 rises and approaches the stopper main body 10, the guide pin 72 of the link 70 passes through the forward path 61 a of the cam groove 61.
Since the link 70 is urged in the forward direction by the spring 40 via the slider 30, the guide pin 72 moves forward to the lock portion 61b when passing through the forward path 61a of the cam groove 61 as shown in FIG. 6B. Get stuck. As a result, the link 70 and the slider 30 are locked so that they cannot advance or retreat.
Accordingly, as shown in FIG. 6A, the latch 50 that is interlocked with the slider 30 is also locked in a state in which the claw 53 approaches the stopper main body 10 and engages with the locking portion 11.
Therefore, the door D cannot be rotated in the closing direction, and the doorway does not close without permission even when the door D is blown by the wind.

On the other hand, in order to unlock the door D, from the state shown in FIG. 6, the door D is pushed a little in the door opening direction as shown in FIG.
Then, the link 70 is slightly retracted while being rotated in conjunction with the slider 30, and the guide pin 72 comes out of the lock portion 61b of the cam groove 61 and retracts along the release portion 61c as shown in FIG. 7B. Then, head to the return path 61d.
That is, the lock state of the guide pin 72 is released, and the link 70 and the slider 30 can be advanced and retracted.

After this operation, as shown in FIG. 8A, when the door D is returned to the closing direction, the slider 30 moves forward by the bias of the spring 40, and the latch 50 moves in the direction in which the pawl 53 descends in conjunction with this. Since it rotates, the engagement between the claw 53 and the stopper main body 10 is released.
Therefore, the door D can be rotated as it is until the doorway is closed. At this time, the link 70 advances while rotating in conjunction with the advance of the slider 30, and the guide pin 72 advances along the return path 61 d of the cam groove 61 of the heart cam 60 as shown in FIG. Return to the starting point.
As described above, the door D can be easily locked and unlocked by simply rotating the door D while standing.

  Next, with reference to FIG. 9 and FIG. 10, the door stopper of 2nd embodiment is demonstrated. The stopper main body 10, the casing C, the heart cam 60, and the link 70 have substantially the same configuration and operation as in the first embodiment, and thus detailed description thereof is omitted.

Similarly to the first embodiment, the slider 30 is supported so as to be slidable in the door closing direction of the door D with respect to the casing C, and is urged in the forward direction by the spring 40.
A pressing piece 32 is formed at the lower edge of the slider 30. In this embodiment, a plate bent in an L shape in side view is fixed to the lower surface of the slider body.
In addition to this, unlike the first embodiment, the back surface side of the pressing piece 32 on the lower surface of the slider is inclined up and down to constitute the cam surface 34.
The cam surface 34 includes an ascending surface that inclines toward the front from the rear of the slider lower surface and a descending surface that continues to the ascending surface and inclines toward the front toward a gentle downward gradient.

Further, unlike the first embodiment, the L-shaped latch 50 in side view is configured such that the upper end of the latch 50 is bent substantially parallel to the floor surface to form a receiving portion 54 as shown in FIG. Further, the lower end thereof is bent to the front side, and an upward claw 53 is formed at the tip as in the first embodiment.
The latch 50 is supported by a block-shaped latch guide G fixed to the casing C so as to be slidable in the vertical direction, and is urged upward by a spring 80 loaded in the latch guide G.

In the latch guide G, a storage space for storing the latch 50 and the spring 80 is formed between the left and right side plates, and the convex portions formed on both side plates are respectively fitted into the concave portions formed on the inner side surface of the casing C. Thus, it is fixed to the casing C. The latch guide G may be formed integrally with the casing C.
Further, a push pin 90 is inserted into the top plate of the latch guide G and is prevented from coming off. The lower end of the push pin 90 is in contact with the receiving portion 54 of the latch 50, and the upper end is in contact with the cam surface 34 of the slider 30. .
Therefore, when the slider 30 advances and retreats, the push pin 90 follows the cam surface 34 by the bias of the spring 80, and the latch 50 that contacts the lower end of the push pin 90 slides up and down in conjunction.

The structure of the door stopper of the second embodiment is as described above. Similarly to the first embodiment, when the door D is rotated in the door opening direction, the stopper body 10 is erected by the magnet 20 and the tip of the stopper body 10 pushes the pressing piece 32 of the slider 30 to slide in the backward direction.
As the slider 30 moves backward, the latch 50 is guided and raised by the rising surface of the cam surface 34 via the push pin 90, and the claw 53 engages with the locking portion 11 on the lower surface of the stopper body 10.
At the same time, the guide pin 72 of the link 70 is guided rearward along the forward path 61a from the starting point of the cam groove 61 of the heart cam 60, and when the claw 53 of the latch 50 is engaged with the stopper body 10, the guide pin 72 is locked. The door D is locked by being stuck into the door 61b, and the door D is prevented from rotating in the closing direction.

When the door D is slightly pushed in the door opening direction from the locked state, the guide pin 72 of the link 70 comes out of the lock portion 61b of the heart cam 60 and passes through the release portion 61c to the return path 61d to be unlocked.
At this time, the latch 50 is guided and lowered to the descending surface of the cam surface 34 of the slider 30 via the push pin 90, so that the engagement of the claw 53 with the stopper main body 10 is released.
Therefore, the unlocked door D can be rotated as it is until the doorway is closed. At this time, the guide pin 72 of the link 70 returns to the starting point along the return path 61 d of the heart cam 60.

In the above embodiment, the stopper main body 10 is configured to be able to rise and fall, but a stopper main body standing upright may be used. In that case, the magnet 20 provided to stand the fallen stopper main body 10 can be omitted.
Moreover, although the stopper main body 10 was attached to the floor F in the above embodiment, it may be attached to a ceiling and a casing etc. may be attached to the upper edge part of a door side surface corresponding to this.

Further, in the above embodiment, the heart cam 60 is disposed above the slider 30, but the position of the heart cam 60 is not particularly limited.
For example, the heart cam 60 is arranged to face the side surface of the slider 30, a shaft hole is formed on the side surface of the slider, the cam groove 61 is formed on the surface of the heart cam 60 facing the slider 30, and the link 70 is connected therebetween. May be.

Further, in the above embodiment, the casing C is employed to support the slider 30 and the like on the door side surface, but the support method is not particularly limited, and may be supported by a frame-like object, for example.
Although the heart cam 60 and the latch 50 are plate-shaped, the shape and the like are not limited to this. For example, the heart cam 60 may be configured integrally with the casing C by directly forming the cam groove 61 on the top surface inside the casing C.
The shape of the slider 30 is not particularly limited. For example, the slider 30 is formed in a plate shape, the fitting shaft 33 is implanted on the side surface, the latch 50 is placed along the side surface, and the window 51 is loosely fitted on the fitting shaft 33. Also good.

The operation of the latch 50 is not limited to the swing of the first embodiment and the vertical slide of the second embodiment. In short, the claw 53 approaches the stopper body 10 and engages with the advancement and retraction of the slider 30. Further, it is only necessary that the claw 53 is separated from the stopper main body 10 to be disengaged.
In addition, the material of the member which comprises a door stopper is not specifically limited, Synthetic resin, such as metals, such as stainless steel, polyamide, polyacetal, and ABS, is illustrated.

D Door F Floor C Casing B Washer G Latch guide 10 Stopper body 11 Locking portion 20 Magnet 30 Slider 31 Guide portion 32 Pressing piece 33 Fitting shaft 34 Cam surface 40 Spring 50 Latch 51 Window 52 Oscillating shaft 53 Claw 54 Receiving portion 60 Heart cam 61 Cam groove 61a Outward path 61b Lock part 61c Release part 61d Return path 70 Link 71 Support pin 72 Guide pin 80 Spring 90 Push pin

Claims (3)

A pivotable door is locked at a predetermined pivot position so that it cannot be pivoted in the closing direction, and when the door is pushed further from the pivot position in the opening direction, the lock is released so that the pivot can be pivoted in the closing direction. A door stopper with a mechanism that can be placed on the door side,
A stopper body 10 attached to the floor or ceiling and facing the side of the door;
A slider 30 supported on the door side surface so as to be slidable in the opening and closing direction of the door, and being pushed back by the stopper body 10 according to the rotation of the door in the opening direction;
A spring 40 for urging the slider 30 in the forward direction;
A claw 53 supported on the side surface of the door and formed at the tip thereof approaches and engages with the stopper body 10 in conjunction with the backward movement of the slider 30, and the stopper body 10 in conjunction with the forward movement of the slider 30. A latch 50 that is disengaged from the latch 50;
A heart cam 60 supported on the door side surface and formed with a cam groove 61 curved in a substantially heart shape on a surface facing the slider 30;
A link 70 in which one end in the longitudinal direction is rotatably supported with respect to the slider 30 and a guide pin 72 formed on the other end in the longitudinal direction fits into the cam groove 61 of the heart cam 60;
The cam groove 61 of the heart cam 60 is
An outward path 61a that extends obliquely backward from the starting point and guides the guide pin 72 of the link 70 in the backward direction according to the rotation of the door in the opening direction;
The guide pin 72 of the link 70 is engaged when the claw 53 of the latch 50 is engaged with the stopper main body 10 so that the guide pin 72 of the link 50 is engaged with the rear end of the forward path 61a. A locking portion 61b for preventing movement;
When the door that protrudes obliquely rearward from the lock portion 61b and is prevented from rotating in the door closing direction is rotated in the door opening direction, the guide pin 72 of the link 70 comes out of the lock portion 61b. A release unit 61c for guiding,
Continuing from the release portion 61c, it extends obliquely forward, returns to the starting point, and includes a return path 61d that guides the guide pin 72 of the link 70 in the forward direction according to the rotation of the door in the door closing direction,
The latch 50 is supported on the side surface of the door so as to be swingable about a swing shaft 52 substantially parallel to the floor surface or the ceiling surface. The latch 50 is loosely fitted to the slider 30 and swings in conjunction with the advance and retreat of the slider 30. A moving door stopper. The slider 30 has a cam surface 34 that is inclined up and down on the surface facing the latch 50;
2. The door stopper according to claim 1, wherein the latch is supported on the side of the door so as to be slidable in the vertical direction of the door, and is guided up and down by the cam surface in conjunction with the advance and retreat of the slider. The stopper body 10 is made of a magnetic material, and can be rotated between an upright position facing the side surface of the door and a lying position retreating from the side surface of the door,
The door stopper according to claim 1 or 2, further comprising a magnet 20 on the side surface of the door, the magnet 20 rotating the stopper main body 10 in a lying position to a standing position by a magnetic force.

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