DOOR OPENING AND CLOSING DEVICE

• US 20150240546A1
• Filed: 09/20/2013
• Published: 08/27/2015
• Est. Priority Date: 09/25/2012
• Status: Active Grant

• Current Assignee: Sugatsune Kogyo Co., Ltd.
• Original Assignee: Sugatsune Kogyo Co., Ltd.
• Inventors: Oshima, Kazuyoshi, Kashiwaguma, Kazuaki, Suzuki, Masaya
• Granted Patent: US 9,353,562 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: E05D 15/401 specially adapted for overhead wings E05D15/403 - E05D15/46 take precedence
• CPC Class Codes: E05D 2003/163 Horizontal pivot-axis
• CPC Class Codes: E05F 1/1041 with a coil spring perpendicular to the pivot axis E05F1/1246 takes precedence
• CPC Class Codes: E05F 1/1058 for counterbalancing
• CPC Class Codes: E05F 1/14 with double-acting springs, e.g. for closing and opening or checking and closing no material
• CPC Class Codes: E05F 5/02 specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
• CPC Class Codes: E05Y 2201/638 Cams; Ramps
• CPC Class Codes: E05Y 2800/22 of not identical elements of the same category, e.g. combinations of not identical springs
• CPC Class Codes: E05Y 2900/20 for furnitures, e.g. cabinets

Abstract

Provided is a door opening and closing device that includes: a main opening and closing device body attached to a housing; a mounting member attached to a door; an arm pivotably provided to the main opening and closing device body, the arm applying force to the door via the mounting member in an opening direction and/or a closing direction; a slider provided to the main opening and closing device body to be slidable in one direction; an urging unit for urging the slider in the one direction; a transmission mechanism for transmitting urging force of the urging unit to the arm; and a door restraint link pivotably linked to the arm at a position away from the center of pivot of the arm, pivotably linked to the mounting member, and slidably linked to the main opening and closing device body so that the door moves in a certain manner.

Claims

1. A door opening and closing device comprising:

a main opening and closing device body attached to a housing;

a mounting member attached to a door;

an arm pivotably provided to the main opening and closing device body, the arm applying force to the door via the mounting member in an opening direction and/or a closing direction;

a slider provided to the main opening and closing device body so as to be slidable in one direction;

an urging means for urging the slider in the one direction;

a transmission mechanism for transmitting urging force of the urging means to the arm; and

a door restraint link pivotably linked to the arm at a position away from the center of pivot of the arm, pivotably linked to the mounting member, and linked to the main opening and closing device body or the slider slidably or via an auxiliary link so that the door moves in a certain manner,

wherein the door restraint link and the slider overlap each other when seen in an axial direction of a pivotal axis of the arm.

2. The door opening and closing device according to claim 1,

wherein a shaft is provided to the main opening and closing device body and

elongated holes through which the shaft is inserted are formed in the slider and the door restraint link.

3. The door opening and closing device according to claim 1,

wherein a recessed portion is formed in a side face of the slider and

the door restraint link is housed in the recessed portion of the slider.

4. The door opening and closing device according to claim 3,

wherein the urging means is one or more coil springs and

a portion of the slider where the recessed portion is formed has a smaller width than an outer diameter of at least one of the coil springs when the slider is seen in a section orthogonal to the one direction.

5. The door opening and closing device according to claim 1 further comprising an expanding and contracting damper in which a shaft portion moves in the one direction relative to a main body portion,

wherein one of the main body portion and the shaft portion comes in contact with the arm and the other of the main body portion and the shaft portion comes in contact with the slider.

6. The door opening and closing device according to claim 1,

wherein the transmission mechanism is a cam provided to the slider and

a roller for coming in contact with the cam is provided to the arm.

7. The door opening and closing device according to claim 1,

wherein the door is a flap door which can pivot about a horizontal axis,

the main opening and closing device body is attached to a side plate of the housing, and

the mounting member is attached to a back face of the flap door.

8. The door opening and closing device according to claim 2,

wherein a recessed portion is formed in a side face of the slider and

the door restraint link is housed in the recessed portion of the slider.

9. The door opening and closing device according to claim 2 further comprising an expanding and contracting damper in which a shaft portion moves in the one direction relative to a main body portion,

wherein one of the main body portion and the shaft portion comes in contact with the arm and the other of the main body portion and the shaft portion comes in contact with the slider.

10. The door opening and closing device according to claim 3 further comprising an expanding and contracting damper in which a shaft portion moves in the one direction relative to a main body portion,

wherein one of the main body portion and the shaft portion comes in contact with the arm and the other of the main body portion and the shaft portion comes in contact with the slider.

11. The door opening and closing device according to claim 4 further comprising an expanding and contracting damper in which a shaft portion moves in the one direction relative to a main body portion,

wherein one of the main body portion and the shaft portion comes in contact with the arm and the other of the main body portion and the shaft portion comes in contact with the slider.

12. The door opening and closing device according to claim 2,

wherein the transmission mechanism is a cam provided to the slider and

a roller for coming in contact with the cam is provided to the arm.

13. The door opening and closing device according to claim 3,

wherein the transmission mechanism is a cam provided to the slider and

a roller for coming in contact with the cam is provided to the arm.

14. The door opening and closing device according to claim 4,

wherein the transmission mechanism is a cam provided to the slider and

a roller for coming in contact with the cam is provided to the arm.

15. The door opening and closing device according to claim 5,

wherein the transmission mechanism is a cam provided to the slider and

a roller for coming in contact with the cam is provided to the arm.

16. The door opening and closing device according to claim 2,

wherein the door is a flap door which can pivot about a horizontal axis,

the main opening and closing device body is attached to a side plate of the housing, and

the mounting member is attached to a back face of the flap door.

17. The door opening and closing device according to claim 3,

wherein the door is a flap door which can pivot about a horizontal axis,

the main opening and closing device body is attached to a side plate of the housing, and

the mounting member is attached to a back face of the flap door.

18. The door opening and closing device according to claim 4,

wherein the door is a flap door which can pivot about a horizontal axis,

the main opening and closing device body is attached to a side plate of the housing, and

the mounting member is attached to a back face of the flap door.

19. The door opening and closing device according to claim 5,

wherein the door is a flap door which can pivot about a horizontal axis,

the main opening and closing device body is attached to a side plate of the housing, and

the mounting member is attached to a back face of the flap door.

20. The door opening and closing device according to claim 6,

wherein the door is a flap door which can pivot about a horizontal axis,

the main opening and closing device body is attached to a side plate of the housing, and

the mounting member is attached to a back face of the flap door.