JP7466180B2 - Rotary and reciprocating actuator, stopper operating device, stopper, and door with stopper - Google Patents

Description

An embodiment of the present invention relates to a stopper structure for buildings, fixtures, or furniture.

When swinging doors are used in entranceways and the like, it may sometimes be necessary to temporarily fix the doors at a desired opening angle, for example, when bringing in fixtures.
Conventionally, doors have been fixed at a specified angle by inserting a piece of lumber between the door and the floor, or by tying a string between the knob and a protruding part on the wall.

JP 2018-044363 A

However, the above-mentioned conventional technology has a problem in that fixing the door is time-consuming.
In addition, some fixing parts are required, which may be lost. In addition, the parts give the product a cluttered appearance, which detracts from the aesthetic appearance.
Furthermore, this issue is not limited to doors; it can also be applied to any object that has a structure that causes it to close naturally when opened, or any object that begins to move.

The present invention was made in consideration of these circumstances, and aims to provide a rotary reciprocating actuator, a stopper operating device, a stopper, and a door with a stopper that can temporarily fix an object that is about to move in a desired position.

The rotary reciprocating actuator according to this embodiment includes a stop shaft housed in a cylinder and capable of protruding from the open end of the cylinder, an elastic portion housed in the cylinder and applying an elastic force to the stop shaft in a direction protruding from the cylinder, an operating portion that slides the stop shaft inside the cylinder against the elastic force, two rows of guide teeth formed on the cylinder and having protruding portions aligned along the circumferential direction of the cylinder, a circumferential tooth protruding from the body of the stop shaft between the two rows of guide teeth, a slope formed on the protruding portion that changes the sliding direction of the circumferential tooth that attempts to slide along the longitudinal direction of the cylinder when it receives a force from the elastic portion or the operating portion, and a stopper groove that is long in the longitudinal direction and is provided on the guide tooth on the open end side and into which the circumferential tooth fits.

The stopper according to an embodiment of the present invention includes a knob that retracts the latch bolt protruding from the door into a casing by rotating it through a preset angle, a rotary reciprocating actuator that can protrude an abutment member from the door toward the floor, and an operation transmission unit that connects the casing and the rotary reciprocating actuator and causes the abutment member to protrude from the actuator toward the floor by rotating the knob through an angle equal to or greater than the preset angle.

The stopper operating device according to an embodiment of the present invention includes a knob that rotates to draw the latch bolt protruding from the door into a casing, a slider that can slide inside the casing, a slider arm that is formed on the knob and abuts against the slider when the knob is rotated beyond a preset angle, causing the slider to slide, and an operation transmission unit that is connected to the slider and generates power according to the displacement of the slider.

Another stopper operating device according to this embodiment includes a knob that rotates to pull the latch bolt protruding from the door into a casing, a slider that can slide inside the casing, a slider arm that is formed on the knob and slides the slider when the knob is rotated, and an operation transmission unit that is connected to the slider and generates power when the knob is rotated beyond a preset angle.

The present invention provides a rotary reciprocating actuator, a stopper operating device, a stopper, and a door with a stopper that can temporarily fix an object in a desired position.

FIG. 2 is a schematic front view of the stopper-equipped door according to the first embodiment. FIG. 2 is a configuration diagram of a stopper operation device according to the first embodiment. (A) A diagram showing the stopper operation device when the knob internal mechanism is in a natural position; (B) A diagram showing the stopper operation device when the knob internal mechanism has been rotated to a predetermined angle; (C) A diagram showing the stopper operation device when the knob internal mechanism has been rotated greater than the predetermined angle. 1A is an external view of a rotary reciprocating actuator device according to a first embodiment, and FIG. 5A to 5F are diagrams illustrating a lock-on operation of the rotary reciprocating actuator for a stopper according to the first embodiment, and FIGS. 5G and 5H are diagrams illustrating an unlocking operation of the rotary reciprocating actuator for a stopper according to the first embodiment. 5A to 5C are diagrams illustrating a lock-on operation of the stopper according to the first embodiment, and FIG. 5D to 5F are diagrams illustrating an unlocking operation of the stopper according to the first embodiment. FIG. 1 is a diagram showing a rotary reciprocating actuator device according to the first embodiment applied to a hinged door as a latch. 1 is a diagram showing a rotary reciprocating actuator device according to the first embodiment applied to a sliding door as a latch, (A) an explanatory diagram showing a modified example of the locking device for the stopper according to the first embodiment when the abutting shaft is protruding, and (B) an explanatory diagram showing the same when the abutting shaft is maintained in the protruding state. 13A is a schematic diagram showing the stopper according to the second embodiment when the door is closed, and FIG. 13B is a schematic diagram showing the stopper when the abutment shaft is protruded. FIG. FIG. 11 is a schematic diagram showing a state of the stopper according to the second embodiment when the door is opened.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
In the following embodiment, the stopper according to the present invention is described as being applied to a swing door, but the stopper is not limited to being applied to doors. For example, the stopper can be applied to desk or shelf drawers that tend to close naturally, gates, safes, etc. In addition, the stopper can be suitably applied as a stopper for carts, carry bags, automobiles, etc. that do not have a structure that tends to close naturally, but that tend to stop on a slope.
In the embodiments, the directions of "horizontal,""vertical," and "up and down" are based on the directions when the stopper is attached to the door attached to the wall surface.

First Embodiment
First, a stopper 10 according to a first embodiment will be outlined with reference to FIG.
FIG. 1 is a schematic front view of a stopper-equipped door (hereinafter simply referred to as a "door") 100 equipped with a stopper 10 according to a first embodiment.
As shown in FIG. 1, the stopper 10 includes a stopper operating device (hereinafter simply referred to as the "operating device") 20 having a knob 11, and a rotary reciprocating operating device (hereinafter simply referred to as the "operating device") 30 provided on the lower portion of the door 100, which are connected by an operation transmission part 12 such as a wire 12.

The knob 11 is composed of a handle lever 11A that is inserted into the operating device 20 from both the outer surface and the inner surface of the operating device 20, and an internal knob mechanism 11B (Figure 2) that rotates around the knob shaft 14 inside the operating device 20 when the handle lever 11A is rotated.

In the stopper 10 according to the first embodiment, the knob 11, in addition to the general function of operating the projection and impaction of the latch bolt 17 by its rotation, applies power such as tension to the operation transmission unit 12 when the knob 11 is rotated by a predetermined angle θ or more. The operation transmission unit 12 then transmits this power to the connected actuator 30, causing the actuator 30 to operate.
Here, the predetermined angle θ refers to the rotation angle of the knob 11 from its natural position around the knob shaft 14 when power begins to be transmitted to the actuator 30 via the operation transmission unit 12 .
The natural position refers to a state in which the handle lever 11A (knob 11) is not rotated.

As shown in FIG. 1, for example, the operating device 30 is fixed to the lower part of the door 100 so that the abutment shaft (abutment member) 19 is aligned vertically. This abutment shaft 19 receives power from the operation transmission unit 12, which functions as an operation unit, and protrudes from the lower edge of the door 100 toward the floor surface 50. Friction is generated at the contact point between the abutment shaft 19 and the floor surface 50, so that the door 100 is fixed at any opening angle and maintained in the open state.

The operation transmission unit 12 is typically a wire 12, but is not limited to a wire 12. For example, the operation transmission unit 12 may be hydraulically transmitted, as in a driving device such as a motorcycle. The operation transmission unit 12 may also be a set of a transmitter and a receiver. In this case, when the rotation of the knob 11 exceeds a predetermined angle θ, an operation signal is sent from a transmitter installed in the operating device 20 to a receiver installed in the operating device 30, thereby controlling the operating device 30.

Next, a configuration of an example of the operation device 20 will be described in detail with reference to FIG. 2 in addition to FIG.
The operating device 20 is mainly configured by housing operating members such as the knob internal mechanism 11B, a latch bolt support portion 21, and a slider 22 within a casing 23.
The knob internal mechanism 11B is, for example, a plate member that is fixed to the knob shaft portion 14 of the handle lever 11A inserted from the outside of the casing 23 and rotates together with the knob shaft portion 14 when the knob 11 is rotated.

In the knob internal mechanism 11B, a latch bolt arm 11a and a slider arm 11b extend along the surface of the casing 23 at a predetermined angle with respect to each other, for example, with the knob shaft 14 as the center.
As shown in FIG. 2 , for example, the latch bolt arm 11 a extends radially from the knob shaft 14 and then bends in a direction away from the latch bolt 17 to come into contact with the latch bolt support portion 21 .

The latch bolt support part 21 has a general shape of a right triangle with the contact side with the latch bolt arm part 11a as the hypotenuse 21a, the side extending horizontally as the short side, and the side extending vertically as the long side. On the plate surface of the latch bolt support part 21, a first locking projection 26a is provided along the short side near the short side, and a second locking projection 26b is provided at the apex formed by the long side and the hypotenuse 21a, facing the casing 23.
The locking projections 26a, 26b are locked in bolt support grooves 27a, 27b provided horizontally in two locations on the casing 23, respectively, so that the latch bolt support part 21 is locked to the casing 23 so as to be slidable in the horizontal direction.

The oblique side 21a of the latch bolt support portion 21 has an arched shape so that when the handle lever 11A is rotated within a predetermined angle θ from the horizontal state, the latch bolt arm 11a abuts against the latch bolt support portion 21 and slides the latch bolt support portion 21.
Due to this structure of the latch bolt support portion 21 and the latch bolt arm portion 11a, when the handle lever 11A rotates within a predetermined angle θ, the latch bolt 17 is pulled into the casing 23.

The latch shaft 17a connecting the latch bolt 17 and the latch bolt support part 21 is provided with a coil spring 31 whose end abuts against a fastening projection 29 fixed to the casing 23. The restoring force of the coil spring 31 compressed by the sliding of the latch bolt support part 21 acts on the latch bolt 17 to return it to its original state.
In addition, a first torsion spring 32 fixed at a position slightly spaced from the knob shaft portion 14 contacts the knob internal mechanism 11B, and applies a rotational restoring force that attempts to return the knob internal mechanism 11B to its natural position.

The casing 23 is further provided with two slider locking grooves 33, one on the left and one on the right, extending in the vertical direction, for example. The slider 22, which is shaped like a box, is bridged and locked in the left and right slider locking grooves 33.
The bottom of the slider 22 is in contact with an end of a slider arm 11 b that extends radially from the knob shaft 14 and then bent.
By the rotation of the slider arm 11 b around the knob shaft 14 , the slider 22 is pushed up along the slider locking groove 33 from the lower edge of the slider locking groove 33 .
The slider 22 is provided with a locking hole, and a wire 12 (operation transmission part 12) having a locking ball 12a formed at the end thereof is passed through this locking hole.

The wire 12 is covered by an outer tube 37 that is several centimeters shorter than the wire 12. The upper end of the outer tube 37 is fixed to the lower side of the casing 23, and only the wire 12 protrudes into the inside of the casing 23 and passes through the locking hole of the slider 22. When the knob 11 is not rotating, the locking ball 12a is located several centimeters above the slider 22 at the lower end of the slider locking groove 33.
When the slider arm 11b rotates around the knob shaft 14 by a predetermined angle θ or more, the locking ball 12a gets caught in the locking hole of the slider 22, and the slider 22 pulls the wire 12 upward.

In FIG. 3(A) to FIG. 3(C), the rotational play of the knob 11 until the wire 12 is operated is secured by the distance between the slider 22 and the locking ball 12a of the wire 12 when the knob 11 is at the bottom end. In other words, even if the slider arm 11b pushes the slider 22 upward, the locking ball 12a is not immediately locked to the slider 22, and the wire 12 is not pulled. However, the play until the wire 12 is pulled may be provided in another configuration. In other words, the extension angle of the slider arm 11b may be changed so that the slider arm 11b does not come into contact with the slider 22 until the preset angle θ. In this case, even if the locking ball 12a is always locked to the slider 22, the wire 12 is not pulled unless the knob 11 is rotated to the preset angle θ, so that the same effect as when the distance between the locking ball 12a and the slider 22 is set as the play can be obtained.

Next, the door opening/closing operation and wire operation performed by the operating device 20 configured as described above will be described with reference to FIG.
FIG. 3(A) shows the operating device 20 with the knob internal mechanism 11B in a natural position, FIG. 3(B) shows the operating device 20 with the knob internal mechanism 11B rotated to a preset angle θ, and FIG. 3(C) shows the operating device 20 with the knob internal mechanism 11B rotated at an angle greater than the preset angle θ.

When the knob internal mechanism 11B is in its natural position, as shown in FIG. 3(A), the latch bolt 17 protrudes from the casing 23, and no restoring force is applied to either of the springs 31, 32.

As shown in FIG. 3B, from this state, until the preset angle θ of, for example, about 30° is reached, the slider 22 slides upward by the slider arm 11b, but the wire 12 is not pulled. Therefore, the latch bolt support part 21 is pushed by the latch bolt arm 11a and moves horizontally along the bolt support grooves 27a, 27b, and only the operation of drawing the latch bolt 17 into the casing 23 is performed. In other words, when the knob 11 is rotated to an angle equal to or less than the preset angle θ, the latch bolt 17 is drawn into the casing 23 and the door 100 can be opened, but the wire 12 is not pulled. In other words, while the handle lever 11A is rotated within the preset angle θ, the handle lever 11A exerts the door opening function expected of a conventional door.

On the other hand, as shown in FIG. 3C, when the handle lever 11A is further rotated to, for example, about 60 degrees, the wire 12 is pulled by the slider 22 and the tension is transmitted to the actuator 30 as power.
When the handle lever 11A is released in this state, the restoring forces of the springs 31 and 32 return the latch bolt 17 and the slider 22 to their natural states.

Next, an example of the actuator 30 will be described with reference to FIGS.
Fig. 4(A) is an external view of the actuator 30, and Fig. 4(B) is a cross-sectional view of the actuator 30 of Fig. 4(A). However, in Fig. 4(A), the outer circumferential surface of the cylinder 38 of the actuator 30 is represented by a dashed line so that the guide teeth 39 of the cylinder 38 can be clearly seen.
The operating device 30 is configured, for example, by housing an abutment shaft (abutment member) 19 and a cylinder spring 41 in a cylinder 38 .

The end ball 12b of the wire 12 is connected to the upper end of the abutting shaft 19. When pulled by the wire 12, the abutting shaft 19 moves upward within the cylinder 38 against the restoring force of the coil-shaped cylinder spring 41.
On the other hand, when the pulling force of the wire 12 is released, the abutting shaft 19 moves downward inside the cylinder 38 due to the restoring force of the cylinder spring 41 connected to the upper end and its own weight. The lower end of the abutting shaft 19 protrudes toward the floor surface 50 from a support plate 42 that supports the cylinder 38 at its lower end. A rubber pad 43 provided at the lower end of the abutting shaft 19 generates friction with the floor surface 50, thereby maintaining the door 100 in the open state.

Meanwhile, guide teeth 39 are provided on the inner peripheral surface side of the cylinder 38. The guide teeth 39 are grooves or protrusions that guide circumferential teeth 44 provided on the abdomen of the abutting shaft 19.
The guide teeth 39 are composed of upper guide teeth 39a and lower guide teeth 39b. The guide teeth 39 are each made up of convex portions (upper convex portions 46 and lower convex portions 47) each having an inclined surface 46a and a vertical surface 46b extending vertically from the apex of the inclined surface 46a, and the convex portions are arranged in a circumferential direction of the cylinder 38, for example, in groups of four, facing each other from above and below. The vertical surfaces 46b, 47b are aligned in a reciprocating manner so as to face the clockwise or counterclockwise side of the convex portions 46, 47.

The apexes of the opposing convex portions 46, 47 are offset from each other by half a convex portion on the round trip, and the extension lines of the vertical surfaces 46b, 47b are located in the middle of the inclined surfaces 46a, 47a of the opposing convex portions 46, 47. The lower guide tooth 39b is provided with rectangular stopper grooves 49 that extend the vertical surfaces 47b toward the floor surface 50 at every other lower convex portion 47, i.e., at two locations on the circumference.
The orbital tooth 44 has a shape and size that allows it to come into contact with each side of the guide teeth 39a, 39b in sequence, such as a trapezoid or circle having a lower base 44a along the vertical direction.

Next, the operation of the actuator 30 thus configured will be described with reference to FIGS. 5(A) to 5(H) and 6(A) to 6(F).
5(A) to 5(F) show the procedure for the lock-on operation, and the procedure from FIG. 5(G) back to FIG. 5(A) shows the procedure for the lock-off operation.
6A to 6C are diagrams showing the interlocking of the operating device 20 and the actuating device 30 during the lock-on operation.
6(D) to 6(G) are diagrams showing the interlocking of the operating device 20 and the actuating device 30 during the unlocking operation.

[Lock-on operation (FIGS. 5(A) to 5(F), 6(A) to 6(C)]
First, when there is no pulling force from the wire 12, as shown in FIG. 5A, the orbiting teeth 44 are in contact with and pressed against the lower guide teeth 39b by the spring force of the cylinder spring 41 (FIG. 6A).
When the knob 11 is rotated by a predetermined angle θ or more and the wire 12 is pulled up within the operating device 20, as shown in FIG. 5B, the pulling of the wire 12 shifts the orbiting teeth 44 vertically upward (FIG. 6B).

Even after the orbital teeth 44 come into contact with the upper guide teeth 39a due to this shift, the orbital teeth 44 receive an upward pulling force and attempt to shift upward.
By receiving this pulling force, the orbiting tooth 44 slides on the inclined surface 46a of the upper convex portion 46 and orbits together with the abutting shaft 19, as shown in FIG. 5(C).
Then, when the knob 11 is returned to its natural position, as shown in FIG. 5(D), the wire 12 is no longer pulled, and the spring force of the cylinder spring 41 shifts the orbiting teeth 44 vertically toward the lower guide teeth 39b (FIG. 6(C)).

Even after contacting the lower guide teeth 39 b , the spring force causes the abutment shaft 19 to slide along the inclined surface 46 a of the lower convex portion 47 , in order to shift downward.
Then, the orbital tooth 44 drops into the stopper groove 49 at the end of the inclined surface 46a, as shown in FIG. 5(E).
When the orbital teeth 44 fit into the stopper groove 49 as shown in FIG. 5(F), the rubber pad 43 at the end of the abutting shaft 19 abuts against the floor surface 50, stopping the door 100 in place.
Even when the orbital teeth 44 are fitted into the bottom of the stopper groove 49 as shown in FIG. 5F, the spring force of the cylinder spring 41 acts on the orbital teeth 44, so that the orbital teeth 44 maintains a protruding state toward the floor surface 50.

[Unlocking operation (from FIG. 5(G) to FIG. 5(A), FIG. 6(D) to FIG. 6(F)]
Next, the unlocking operation will be described.
When the knob 11 is rotated by a predetermined angle θ or more from the locked-on state shown in Fig. 5(F) (Fig. 6(D)), the wire 12 is pulled inside the operating device 20. Due to the tension of the wire 12, the orbital tooth 44 shifts vertically upward together with the abutting shaft 19 as shown in Fig. 5(G) and comes out of the stopper groove 49, and the abutting shaft 19 is pulled up into the operating device 30 (Fig. 6(E)). The orbital tooth 44 that has shifted vertically upward comes into contact with the inclined surface 46a of the upper guide tooth 39a. Since the wire 12 continues to pull the abutting shaft 19, the orbital tooth 44 rotates together with the abutting shaft 19 so as to slide along the inclined surface 46a as shown in Fig. 5(H).

When the knob 11 is returned to its natural position, the traction force of the wire 12 is eliminated (FIG. 6(F)). As a result, the tension of the cylinder spring 41 causes the orbiting teeth 44 to return to the state shown in FIG. 5(A) in which they are pressed against the lower guide teeth 39b.

Next, a modified example of the application of the actuation device 30A according to the first embodiment will be described with reference to FIGS.
FIG. 7 is a diagram showing the operating device 30A according to the first embodiment applied to a hinged door as a latch.
In FIG. 7, the wire 12 and the operating device 30A are embedded inside the door 100A, but are shown by solid lines as appropriate to prioritize ease of viewing.
When the actuator 30A is used as a latch, a latch hole 51 is provided in the wall surface to which the door 100A is attached, as shown in FIG.
The actuator 30A is built into the door 100A so that the abutting shaft 19 fits into the latch hole 51. The latch hole 51 and the actuator 30A may be installed on any of the top, bottom, left and right sides of the door 100A. By combining the pulley 53, the operating direction of the wire 12 can be freely designed.

FIG. 8 is a diagram showing the operation device 30A according to the first embodiment applied to a sliding door 100B as a latch.
When the actuation device 30A is applied to the sliding door 100B, the operating device 20A may be provided separately from the pull tab 52. For example, as shown in Fig. 8, a cylindrical operating device 20A is provided near the pull tab 52. In such an operating device 20A, both circular side surfaces are disposed on the same plane as the surface of the sliding door 100B. Both circular side surfaces are engraved to form a thumb turn 54. A notch 55 is provided in the body of the operating device 20A, reaching near the central axis C of rotation.

An end of wire 12A is inserted through slit 55 and fixed near rotation axis C. With this structure, wire 12 extends vertically from the surface of the body of operating device 20 through slit 55 from the rotation axis C due to the weight of operating device 20A. When thumb turn 54 is pinched and rotated, wire 12A is wound around the body of operating device 20A by the amount of rotation, and is pulled upward.
In addition, when the latch hole 51 is provided on the floor surface 50 as shown in FIG. 8, the operating device 30A can be mounted on the exterior of the door 100A instead of being built into the door 100A.

As described above, according to the stopper 10 of the first embodiment, the door 100 can be temporarily fixed at a desired position simply by operating the knob.
Furthermore, the door 100 according to the first embodiment provides a simple and neat aesthetic appearance, and also makes it possible to prevent the loss of accessories necessary for temporarily fixing the door 100.

Second Embodiment
9A and 9B are schematic configuration diagrams of a stopper 10a according to the second embodiment.
FIG. 9A shows the state when the door is closed, and FIG. 9B shows the state when the abutting shaft 19 is protruding.

In the second embodiment, the circumferential teeth 44 and the guide teeth 39 (39a, 39b) shown in FIG. 4 and the like are not necessarily required.
9A and 9B, in the stopper 10a according to the second embodiment, a retraction member 56 is provided inside the casing 23. The retraction member 56 is, for example, a coil spring that is installed between the edge portion of the casing 23 and the slider 22a so as to contact the slider 22a. The retraction member 56 elastically contacts the slider 22a and applies an elastic force to the slider 22a in a direction to retract the wire 12 into the casing 23.

In other words, the retraction member 56 functions as a second elastic portion that attempts to offset the elastic force of the cylinder spring (first elastic portion) 41a of the first embodiment.
In other words, the pulling member 56 has the function of pulling up the wire 12 via the slider 22a, thereby weakening the elastic force of the cylinder spring 41a tending to protrude the abutting shaft 19 from the cylinder 38a.
As a result, when the handle lever 11A is not rotated as shown in FIG. 9A, the pushing force of the cylinder spring 41a is weakened by the retraction member 56, so that the abutting shaft 19 does not protrude.

In the second embodiment, as shown in FIG. 9B, the slider arm portion 11b abuts against the upper side of the pull-in member 56 by rotation.
That is, the handle lever 11A rotates largely, and the slider arm 11b pushes down the slider 22a against the elastic force of the retraction member 56. When the slider 22a is pushed down, the tension of the wire 12 is weakened, and the pushing force of the cylinder spring 41a, which was offset by the retraction member 56, is applied to the abutment shaft 19. Then, the abutment shaft 19 protrudes toward the floor surface @, and the door 100 is fixed at any open angle.

The position of the retraction member 56 is not limited to the example shown in FIG. 9(B) where it contacts the bottom edge of the casing 23. It may be located anywhere in the casing 23 as long as it is possible to offset the elastic force of the cylinder spring 41a. For example, the retraction member 56 may be set in a state where it is stretched from its natural length on the same side as the knob internal mechanism 11B with respect to the slider 22a. In this case as well, the retraction member 56 can apply an elastic force to the slider 22a that retracts the wire 12 into the casing 23. Furthermore, the slider 22a may slide in any direction as long as it can retract the wire 12 into the casing 23.

In addition, in Figures 9(A) and (B), the latch bolt support 21 has been changed to a ring-shaped, plate-shaped, or rod-shaped engagement member provided on the latch shaft 17a. The shape of the latch bolt arm 11a has also been slightly changed in accordance with this change. In this way, the shapes of the latch bolt arm 11a and the latch bolt support 21 can be selected in a variety of ways depending on their relative positions.

FIG. 10 is a diagram showing a state of the stopper 10a according to the second embodiment when the door is opened.
As in the first embodiment, when the handle lever 11A is rotated at an angle equal to or smaller than the predetermined angle θ, the slider arm portion 11b does not come into contact with the slider 22a, as shown in FIG.
Therefore, within the predetermined angle θ, the latch bolt 17 is simply retracted into the casing 23 and functions as a normal door.

Note that the second embodiment has the same configuration as the first embodiment, except that the reciprocating motion of the abutting shaft 19 is replaced by a retracting member 56 instead of the mechanism of the orbiting teeth 44 and the guide teeth 39, and therefore a duplicate description will be omitted. Also, in the drawings, corresponding configurations are given the same reference numerals and descriptions will be omitted.

As described above, the stopper 10a according to the second embodiment can achieve the same effect as the first embodiment with a simple structure that does not have guide teeth 39.

Although an embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention.
The embodiments can be embodied in various other forms, and various omissions, substitutions, modifications, and combinations can be made without departing from the spirit of the invention. The embodiments and their modifications are included in the scope of the invention and its equivalents as described in the claims, as well as in the scope and spirit of the invention.

For example, in the above embodiment, the stopper is brought into close contact with the floor surface to temporarily fix the door, but the stopper may protrude from the ceiling or a side wall.
Furthermore, although an abutment shaft has been given as an example of the abutment member, the abutment member may have any shape as long as it can abut against the floor surface to prevent the door from closing.
As mentioned above, the application of the stopper is not limited to doors.

100 (100A, 100B)...door, 10 (10a)...stopper, 11 (11A, 11B)...knob (handle lever, knob internal mechanism), 11a (11)...latch bolt arm, 11b (11)...slider arm, 12...operation transmission part (operation part, wire), 12a (12)...locking ball, 12b (12)...end ball, 14...knob shaft, 17 (17a)...latch bolt (latch shaft), 19...butting shaft (butting member), 20 (20a)...operation device, 21 (21a)...latch bolt support part, 22 (22a)...slider, 23...casing, 26a...first locking projection (locking projection), 26b...second locking projection (locking projection), 27a...bolt support groove, 27b ...Bolt support groove, 29...retaining protrusion, 30 (30a)...actuator, 31...coil spring, 32...first torsion spring, 33...slider locking groove, 37...outer tube, 38 (38a)...cylinder, 39 (39a, 39b)...guide teeth (upper guide teeth, lower guide teeth), 41 (41a)...cylinder spring, 42...support plate, 43...rubber pad, 44 (44a)...circumferential teeth (lower base of the circular teeth), 46 (46a, 46b)...upper convex portion (inclined surface, vertical surface), 47 (47a, 47b)...lower convex portion (inclined surface, vertical surface), 49...stopper groove, 50...floor surface (foundation surface), 51...bar hole, 52...handle, 53...pulley, 54...thumb turn, 55...notch, 56...retraction member, θ...predetermined angle.

Claims (5)

abutting shaft accommodated in the cylinder and capable of protruding from an open end of the cylinder;
an elastic portion that is housed in the cylinder and applies an elastic force to the abutting shaft in a direction protruding from the cylinder;
a wire that slides the abutting shaft inside the cylinder against the elastic force;
Two rows of guide teeth are formed on the cylinder and have protrusions aligned along a circumferential direction of the cylinder;
a circumferential tooth protruding from a body portion of the abutting shaft between the two rows of the guide teeth;
a slope formed on the protruding portion and configured to change a sliding direction of the orbiting tooth that attempts to slide along the longitudinal direction of the cylinder by receiving a force from the elastic portion or the wire;
a stopper groove that is long in the longitudinal direction and is provided on the guide tooth on the opening end side and into which the orbiting tooth is fitted. The rotary reciprocating actuator according to claim 1, wherein the tops of the opposing convex portions are offset from each other. The rotary reciprocating actuator according to claim 2, wherein the convex portion is composed of the inclined surface and a short side that is approximately along the longitudinal direction, and the top of the convex portion is located halfway up the inclined surface of the opposing convex portion. The rotary reciprocating actuator according to any one of claims 1 to 3,
A knob that retracts the latch bolt protruding from the door into the casing by rotating it by a predetermined angle,
A stopper characterized in that the wire connects the inside of the casing with the rotary reciprocating actuator and causes the abutment shaft to protrude from the open end of the rotary reciprocating actuator when the knob is rotated by more than the predetermined angle. A door equipped with a stopper, comprising the stopper according to claim 4 .

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