JP7537745B2 - Door stopper - Google Patents

Description

This invention relates to a door stopper that is used for indoor ventilation, air circulation, temperature control, odor removal, etc.

FIG. 10 is a perspective view showing a conventional door stopper attached to a door.
This door stopper consists of a flat mounting plate 81 fixed to door A, two opposing support plates 82, 82 protruding forward from the mounting plate 81, a horizontal shaft 84 arranged between the support plates 82, 82, and a pipe-shaped stopper 83 with a ferrule 85 at its tip, which is rotatably arranged between the support plates 82 with the shaft 84 passing through its base end.

The door stopper is attached to the bottom of door A by means of an attachment plate 81 secured with adhesive tape or screws. In the normal state (when not in use), the stopper 83 is pushed upward. When in use, the stopper 83 is pushed down and rotates around the shaft 84, causing the ferrule 85 to contact the floor C.

This allows door A to be held in an open position, allowing air to circulate, ventilate, and deodorize the room. When closing door A, the stopper 83 is pushed up with a hand or a foot, and the ferrule 85 is rotated to a position where it is facing up.

JP 2012-172410 A

With conventional door stoppers, you have to raise and lower the stopper with your hands while crouching or bending over, or you have to raise and lower the stopper with your feet while standing on one foot.
This not only causes problems such as dirtying the hands when operating the stopper, and scratching the toes of shoes, which is uncomfortable, but also makes it extremely difficult for people with ankle, knee or back problems, or for the elderly, to operate the stopper.

In addition, because the structure only involved a stopper that could rotate on the shaft, there was a risk that the stopper could fall over unintentionally, and there was also a risk that the open door could move if there was a sudden strong wind, etc., which resulted in disadvantages such as unstable movement and weak stopping power.

The purpose of this invention is to solve the above problems and provide a door stopper that can be operated simply by operating the handle while standing in a natural posture, and that is clean, simple, easy to operate even for the elderly, safe, and provides a stable holding force.

To achieve this objective, the door stopper of this invention has the following configuration. The door stopper is characterized by comprising an operating means 1 that is arranged near the knob B of the door A and that moves a rope 13 up and down in a vertical line via a cam 2 connected to the handle 11 when the handle 11 is raised and lowered, and a stopping means 3 that is arranged at the bottom of the door A corresponding to the operating means 1 and that engages a rack 54 connected to a lifting cylinder 4 that is attached to the base end of the rope 13 with a pinion 63 of the stopper 6 meshing with the rack 54, and that operates the stopper 6 when the pinion 63 rotates forward and backward.

In a door stopper with this configuration, the operating means and the stopping means are separate, and the operating means (handle) is located near the door knob, so the stopping means (stopper) can be operated in a natural standing position. Therefore, even people with physical disabilities or elderly people can easily operate the door to hold it open.

In addition, the stopper located below can be automatically activated and reset simply by raising and lowering the handle. Therefore, there is no need to touch the stopper with your hands or the toes of your shoes, so there are no disadvantages to getting your hands dirty or your toes scratched, and it is hygienic.

 Furthermore, the rope firmly connects the handle and the lifting tube, and the pinion and rack of the stopper mesh with each other to apply a rotational force to the stopper, which has the excellent effect of eliminating the risk of the stopper collapsing unintentionally or the risk of the open door moving due to strong winds, etc.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the door stopper according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the door stopper is composed of an operating means 1 arranged near a knob B of a door A, and a stopping means 3 arranged at the bottom of the door A via a rope 13 corresponding to the operating means 1.

As shown in FIG. 2, the operating means 1 consists of a case body 12 with a rear opening and the periphery of the opening attached to the door surface A, a handle 11 rotatably attached to the outer surface of the case body 12, and a rope 13 that rises and falls vertically via a cam 2 linked to the handle when the handle 11 is rotated.

2, the handle 11 is made up of two mounting plates 11b that sandwich the outer surfaces of both side plates 12c of the case body 12, and a flat handle portion 11a that is provided across the tip end of both mounting plates 11b. The rotating shaft 11c that protrudes from the base end of both mounting plates 11b penetrates the side plates 12c of the case body 12 and is connected to a cam 2 (described later) inside the case body 12.

The cam 2 is composed of a bow-shaped guide rail 23 provided on the inner surface of each side plate 12c of the case body 12, a slider 21 provided with a fitting portion 21a into which an insertion piece 11d connected to the tip of the rotating shaft 11c fits, and a pin 22 that penetrates the base end of both sliders 21, and the tip of the pin 22 that protrudes outward from the slider 21 fits into the guide rail 23.

The guide rail 23 is formed in a bow shape with the upper end curving backward (towards door surface A) from the lower end. Therefore, when the handle 11 is pushed all the way up, the center of the pin 22 is set to stop beyond the center of rotation of the handle 11 (see Figure 6).

The tip hook 13a of the rope 13 is fixed to the center of the pin 22 between the two sliders 21, 21, and the rope 13 hangs down vertically from the insertion hole 12b on the bottom surface of the case body 12.

FIG. 3 is an explanatory perspective view showing the stopping means 3, and FIG. 4 is an exploded perspective view.
The stopping means 3 comprises a lifting cylinder 4 (a movable rack 5 connected vertically via a spring 55) housed in the motion housing portion 3b of the case body 3A, and a stopper 6 housed in the stopper housing portion 3c of the case body 3A.

The case body 3A is made up of rectangular left and right side plates 31, 31, a flat back plate 33 that closes the rear surface between the side plates 31, 31, and a partition plate 32 that divides the U-shaped space at the front opening surrounded by the left and right side plates 31 and the back plate 33 into front and rear. The rear space is the operation storage section 3b, and the front space is the stopper storage section 3c.

As shown in Figure 4, the partition plate 32 is a rectangular flat plate consisting of a semi-cylindrical portion 32a that protrudes forward from the center of the surface, and an L-shaped protruding plate portion 32c that is continuous with both ends of the flat plate and protrudes forward, and the bent tip of the L-shaped protruding plate portion 32c is joined to the left and right side plates 31 to provide a square tube portion 32b with a rear opening. The lifting cylinder 4 described later is housed in this semi-cylindrical portion 32a, and the sliding plate portion 45 described later is housed in the square tube portion 32b.

Furthermore, a damper fixing portion 34 that protrudes rearward is provided on the semi-cylindrical portion 32a of the partition plate 32, and a sliding plate support stop portion 35 is provided on the square tube portion 32. In addition, a semi-circular receiving portion 32d that supports the lower half of the rotation shaft portion 62 of the stopper 6 (described later) is provided on the lower end of the L-shaped protruding plate portion 32c that constitutes the square tube portion 32, and a pair of semi-circular receiving portions 32d that support the upper half of the rotation shaft portion 62 are provided on the lower end of the back plate 33.

The lift cylinder 4 is made up of an upper semi-cylindrical section 41 at the rear opening through which the rope 13 passes and to which the base end binding section 13b is attached (screwed), a central semi-cylindrical section 42 at the front opening that is continuous with the upper semi-cylindrical section 41, and a lower cylindrical section 43 for attaching a spring that is continuous with the central semi-cylindrical section 42. The lower cylindrical section 43 has overhanging arms 44 that protrude to the left and right from the periphery, and a sliding plate section 45 is continuously arranged at a right angle at the tip of the arm 44.

The teeth of the upper semi-cylindrical portion 41 mesh with the teeth of the base end binding portion 13b of the rope 13, and by selecting this meshing position, the mounting height position of the operating means 1 relative to the door A can be adjusted.

The movable rack 5 is composed of a spring mounting tube 51, an overhanging arm 52, a sliding plate 53, and a rack 54 extending downward from the lower part of the sliding plate 53. The spring mounting tube 51 and the lift tube (lower cylindrical part 43) 4 are connected by a spring (cylindrical coil spring) 55. The damper 7 has a cylinder bottom 72 fitted into the spring mounting tube 51, and a rod head 71 that passes through the lower cylindrical part 43 is connected to the damper fixing part 34.

The stopper 6 is a rectangular flat plate 61 with a concave back surface, a rotating shaft 62 at the base end, and a ferrule 64 at the tip end, with a pinion 63 integrally attached to the outside of the rotating shaft 62. The stopper 6 is housed in the stopper housing 3c so that it can be retracted, and the pinion 63 meshes with the rack 54. The forward and reverse rotation of the pinion 63 rotates the stopper 6 and operates (starts and returns).

In the door stopper having such a configuration, the stopper 6 is normally accommodated in the stopper accommodating portion 3c of the case body 3A in an upright state.
As shown in FIG. 6, when the handle 11 is raised to the top, the vertical center of the pin 22 passes over the vertical center (center of rotation) of the rotation shaft 11c of the handle 11 and stops, preventing the handle 11 from falling down unintentionally.

5, the lift cylinder 4 is pulled up by the rope 13, and the sliding plate portion 45 is held down by the sliding plate support stop portion 35. The pinion 63 meshes with the lower end of the rack 54. The rack 54 applies a rotational force to the stopper 6 integrated with the pinion 63, and the closed state (stopper standing/stored state) is maintained.

To stop door A from being open, the handle 11 is pushed down as shown in Figure 7. The pin 22 of the slider 21 moves along the guide rail 23, and the pin 22 stops at the bottom end of the rail 23. When the rope 13 descends, the lifting cylinder 4 is pulled towards the movable rack 5 by the contraction force of the spring 55, collides with it, and descends together with the movable rack 5, as shown in Figure 8. Then, the stopper 6 integrated with the pinion 63 rotates, and the ferrule 64 touches the floor C surface.

Figure 9 is an explanatory diagram of closing door A. When the handle 11 is pushed up and the rope 13 is pulled up, only the lifting cylinder 4 is pulled up while stretching the spring 55, and then the movable rack 5 is pulled up by the contraction force of the spring 55. When the movable rack 5 is pulled up, the stopper 6 rotates due to the rack 54 and pinion 63, and it slowly and quietly returns to the stopper housing part 3c due to the braking force of the damper 7.

FIG. 2 is a perspective view showing a state in which the door stopper according to the embodiment is attached. FIG. FIG. FIG. FIG. 13 is an explanatory diagram showing the state in which the rope is pulled up and the stopper is stored. FIG. 13 is an explanatory diagram showing the state in which the handle is pushed up and the rope is pulled up. FIG. 13 is an explanatory diagram showing the state in which the handle is pushed down and the rope is lowered. 13 is an explanatory diagram showing a state in which the ferrule of the stopper is in contact with the floor surface. FIG. FIG. 11 is an explanatory diagram showing a state in which the rope is being pulled up. FIG. 1 is a perspective view showing a conventional door stopper.

1. Operating means
2 Cam 3 Stopping means
4. Elevator
5 Movable rack 6 Stopper
7 Damper 11 Handle 13 Rope
21 slider 22 pin 23 guide rail 31 left and right side plates 32 partition plate
33 Backboard
32a: semi-cylindrical portion 32b: square tube portion
45 Sliding plate part
53 sliding plate portion 54 rack 55 spring
62 Rotating shaft part
63 Pinion
A Door
B Knob
C Floor

Claims (5)

A door stopper characterized by comprising an operating means that is arranged near the door knob and that raises and lowers a rope vertically via a cam connected to the handle when the handle is raised and lowered, and a stopping means that is arranged at the bottom of the door corresponding to the operating means, with a stopper pinion that meshes with a rack connected to a lifting cylinder that is attached to the base end of the rope, and the stopper operates when the pinion rotates forward or backward. The door stopper according to claim 1, characterized in that the cam of the operating means is composed of a bow-shaped guide rail provided on the inner surface of the side plate of the case body to which the handle is rotatably attached, a slider connected to the rotation shaft of the handle, and a pin connected to the slider and fitted into the guide rail. The door stopper according to claim 2, characterized in that the guide rail is formed in a bow shape with the upper end bending toward the door surface from the lower end, and when the handle is pushed all the way up, the pin center passes the rotation center of the handle and stops. The door stopper according to claim 1, characterized in that the stopping means comprises a movable rack that is arranged at the bottom of the lifting cylinder via a spring and that moves up and down in response to the lifting cylinder, and a pinion that is integral with the stopper base is engaged with the rack at the bottom of the movable rack to allow the stopper to rotate. 5. The door stopper according to claim 4, further comprising a damper disposed between said lifting cylinder and said movable rack for damping the rotation of said stopper.

Images