JP3439664B2 - Door device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device provided with a door guard for slightly opening a door to prevent a person from entering or leaving when checking a visitor. . 2. Description of the Related Art In a door provided with a door guard, an arm is rotatably supported on the indoor side surface of the door, a receiving member is provided on a door frame, and an engaging portion of the receiving member is engaged with the arm. Engage with the engaging and disengaging holes continuous with the mating hole, open the door, slide the engaging portion into the engaging hole of the arm, and touch the end of the engaging hole,
Arrangements are known in which the door cannot be opened further. Thus, when checking a visitor, the door is slightly opened to prevent a person from entering or leaving the door, or the door is held in a half-open state to allow ventilation. A conventional door guard includes a main body and a rotating part that rotates about an axis with respect to the main body. The rotating part is provided on the rotating part by rotating the rotating part 90 degrees in the vertical direction. The structure is such that the engaging portion is engaged with the arm or the engagement is released. [0004] However, since the rotating body can freely rotate up and down, a third person outside the room can
A rubber band, a string, or the like is hooked onto the engaging portion from a slight gap between the frame and the door from the outdoor side, and then the door is not fully closed, and the engaging portion is positioned in the engagement / disengagement hole. It is possible to disengage the engaging portion and remove the engaging portion from the engagement / disengagement hole. In this way, it is conceivable to remove the door guard from the outside and open the door. SUMMARY OF THE INVENTION It is an object of the present invention to provide a door device which is excellent in security performance and in which a door guard cannot be removed from the outdoor side. The invention according to claim 1 comprises an arm rotatably attached to one of a door and a frame, and a receiving member for the arm attached to the other.
The arm has an engaging hole in the longitudinal direction thereof, and an engaging and disengaging hole continuous with the engaging hole, the receiving member is a main body, a rotating body rotatably provided on the main body around a rotating shaft, A rotation restricting mechanism provided between the main body and the rotating body; and an engaging portion provided on the rotating body, wherein the engaging portion is engaged by an opening operation of the door when entering the engagement hole. rotation of the rotating member by with those engaging moved to Goana releasing the rotation restriction of the rotating member by the rotation regulating mechanism is freely, it can retract from engagement and disengagement hole, rotation restricting mechanism , The fitting part provided on the rotating body and the body
And a mating portion provided with the mating portion.
Control the rotation of the rotating body, and move the rotating body in the direction of the axis of the rotating shaft.
When it moves along the
Can be released and the rotating part can be rotated to retract the engaging part from the engaging / removing hole.
The receiving member is provided between the main body and the rotating body.
Means for urging the rotating body to the fitting position,
Unmated when moved to the indoor side along the axial direction
Characterized in that that. According to the first aspect of the present invention, when the door is opened, the rotating body is rotated while the door is closed, and the engaging portion is engaged with the engagement / disengagement hole. When the door is opened in this state, the engaging portion slides the engaging hole, and when the door hits the end of the engaging hole, the door can no longer be opened. The open state of the door is maintained at the position. On the other hand, when the engagement between the arm and the engaging portion is released, the door is closed, and the rotation restricting mechanism is released with the engaging portion engaged with the engaging / disengaging hole. As a result, the rotating body becomes rotatable, so that the rotating body is rotated to release the engaging portion from the engagement / disengagement hole, and the engagement between the engaging portion and the arm is released.
In this manner, the engagement between the engaging portion and the arm cannot be released unless the operation of rotating the rotating body is performed after the rotation restricting mechanism is released. Therefore, to release the engagement between the engaging portion and the arm,
Since two operations are necessary, even if a third party tries to release the engagement from the outside of the door using a rubber band or the like from the gap between the door and the frame, the two operations are difficult due to the rubber band or the like. Excellent security. The frame is another door provided adjacent to the door, which is held in the frame by a lock or the like so that it cannot be opened and closed, and is substantially regarded as a part of the frame (for example, , Child door). [0010] The rotation restricting mechanism may have a structure for automatically restricting the rotation of the rotating body, or a structure for restricting the rotation by an operation such as insertion of a pin. When the engagement between the arm and the engaging portion is released, the rotating body is moved in the axial direction of the rotating shaft from the position where the rotating body is fitted to the fitted portion with the door closed. Then, the rotation restriction is released, and then the rotating body is rotated to release the engaging portion from the engagement / disengagement hole of the arm. As described above, the engagement between the engaging portion and the arm cannot be released unless the rotating body is rotated after the rotating body is moved in the axial direction of the rotating shaft. Therefore, two operations in different directions are required to release the engagement portion and the arm, so that a third party can use the gap between the door and the frame,
It is difficult to use a rubber band or the like to release the engagement from the outside of the door, and it is difficult. Therefore, the security is excellent, but the operation from the indoor side is easy, so that the operability of the user in the indoor side is good. In addition, the configuration of the rotation restricting mechanism is simple. [0013] [0014] rotary body against the biasing force of the biasing force means are moved in the axial direction of the rotating member, rotating the left rotary body and the action of the biasing force is performed with a string or the like from the outdoor side It is more excellent in crime prevention. Further, when the rotating body is rotated to the engagement position of the engagement / disengagement hole, the rotating body is automatically fitted to the main body by the urging force, so that the operability is good and the fitting portion is attached to the fitted portion. Since the rotation is held by the force, the rotation regulation is stable. When the rotation restriction is released, the rotating body must be moved from the outdoor side to the indoor side. Since the third person moves the rotating body in a direction away from the user, it is difficult to operate from the outdoor side with a rubber band or the like, and the security is further improved. Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIGS. 1 to 5, a door 1 (door apparatus) according to the first embodiment
Has a frame 3 and a door 5, the arm unit 7 is fixed to a door-side indoor surface of the door 5, and the receiving member 9 is fixed to a prospective surface of the frame 3. The arm unit 7 includes a main body 11 fixed to the door 5 by screws and an arm 13 supported by the main body 11. The arm 13 is configured to be rotatable with respect to the main body 11. In the present embodiment, the arm 13 is attached to the shaft 15 with the door 5 closed, and the arm 13 rotates upward when the door 5 is opened. On the other hand, the arm 13 may be provided so as to be located upward, and the door 13 may be turned downward when the door 5 is opened. Alternatively, the arm 13 may be arranged in a horizontal direction, and the arm 13 may be rotated left and right by opening and closing the door 5. The arm 13 has a shape curved in the longitudinal direction, and has an engaging hole 17 formed along the longitudinal direction.
At the door-side end of the engagement hole 17, an engagement / disengagement hole 1 having a size capable of retracting the engagement portion 21 from the engagement hole 17 by tilting the engagement portion 21 upward.
9 are formed. The engagement / disengagement hole 19 is a large diameter hole continuous with the engagement hole 17. The receiving device 9 includes a main body 20, an engaging portion 21,
A rotating body 22 and an operation section 23 are provided integrally with the engaging section 21. The rotating body 22 is rotatable around a rotating shaft 25 fixed to the main body 20. It is provided to be slidable in the axial direction. The rotating shaft 25 is the frame 3
The bearings 27, 2
9, both ends are fixed. One bearing 27 is located on the outside of the room in the expected direction, and the other bearing 29 is located on the inside of the room. A coil spring 31 is interposed between the other bearing 29 and the rotating body 22, and urges the rotating body 22 toward one bearing 27. A pair of projections (fitting portions) 33 are formed on the rotating body 22 at positions facing one bearing 27. On one bearing 27, a fitting hole (fitted portion) 35 into which the projection 33 can be fitted is formed, and the rotation regulating mechanism 32 is constituted by the projection 33 and the fitting hole 35. I have. Convex part 33
The rotation of the rotary body 22 is restricted so that the rotary body 22 cannot be rotated in a state where is fitted in the fitting hole 35. When the rotating body 22 is moved to the indoor side against the urging force of the coil spring 31 to remove the projection 33 from the fitting hole 35, the rotating body 22 becomes rotatable. Further, two small holes (not shown) are formed at positions 90 degrees from the fitting hole 35 in the rotation direction of the rotating body, and the engaging portion 21 is fitted into the fitting hole 35. At the position where the engaging portion 21 is turned down by rotating 90 degrees from the fitted position (in the upright state), the convex portion 33 is engaged with the small hole to perform positioning. Incidentally, reference numeral 38 in the drawing denotes a receiving piece. Next, the operation of the present embodiment will be described. As shown in FIG. 2, when the door 5 is closed, the engaging portion 21 and the operating portion 23 of the receiver 9 fixed to the frame 3 are in a state of being tilted upward, and the engaging portion 21 is It is located at a position corresponding to the engagement / disconnection hole 19. From this state, the operator on the indoor side holds the operating portion 23, turns the rotating body 22 downward, and raises the engaging portion 21 as shown in FIGS. To be engaged. The engaging portion 21 has a head 21 a having a size larger than the width of the engaging hole 17 so as not to come out of the engaging hole 17, and a neck portion 21 b of the engaging portion 21 is located in the engaging hole 17. . When the door 5 is opened in the state shown in FIG.
When the engagement portion 21 slides in the engagement hole 17 and moves to the end of the engagement hole 17 shown in FIG. 4, it cannot be opened any more, so that the open state of the door 5 is maintained. As described above, when the door 5 is opened, the arm 13 and the engaging portion 21 are engaged only by rotating the operation unit 23, and the door 5 is directly opened.
Can be opened to maintain the open state. On the other hand, when the engagement between the arm 13 and the engaging portion 21 is released, the door 5 is closed from the open state, and the state shown in FIG. 3 or FIG. Next, as shown in FIG.
After the engagement between the convex portion 33 and the fitting hole 35 is released by pulling the indoor portion against the urging force of (3), the operating portion 23 is rotated as shown by the arrow while being pulled. This allows
The engagement between the arm 13 and the engaging portion 21 is released. As described above, when the engagement between the arm 13 and the engaging portion 21 is released, the operation portion 23 is moved toward the indoor side and against the urging force of the coil spring 31 to move the operation portion 23. Since two operations are required, it is easy to operate from the indoor side, but it is difficult to operate from the outdoor side, especially from the gap between the door 5 and the frame 3. Therefore, intrusion from the outside can be prevented, and the security is excellent. In particular, since movement in the direction of the operation unit 23 needs to move toward the indoor side, it is more difficult to operate with the cord or rubber band from the outdoor side. Next, a second embodiment of the present invention will be described with reference to FIG. Note that, in the second embodiment, parts that have the same operation and effect as the above-described first embodiment include:
By assigning the same reference numerals, detailed description of those portions will be omitted. In the second embodiment, a parent-child door is used as an example of a door device, and the frame 3 of the above-described first embodiment also serves as the door-side side of the child door 41, and the child door receives the frame. The tool 9 is attached. Further, the receiving device 9 is different from the above-described first embodiment in that the receiving device 9 is fixed to the indoor side finding surface on the front side of the child door 41. The present invention is not limited to the above embodiment,
Various modifications can be made without departing from the spirit of the present invention.
For example, the arm unit 7 and the receiving member 9 are not limited to doors, and may be used for a sash having a hinged door. Alternatively, the arm may be attached to the door 5 and the receiving device 9 may be attached. According to the first aspect of the invention, in order to release the engagement between the engagement portion and the arm, the rotation body is rotated after the rotation restriction mechanism is released. Therefore, it is difficult for a third party to release the engagement from the outside of the door using a rubber band or the like, which is excellent in crime prevention. The rotation body is moved in the direction of the rotation axis to release the rotation restriction, and then the rotation body is rotated to release the engaging portion from the engagement / disengagement hole of the arm. Since operation is required, the security is further improved. On the other hand, since the operation from the indoor side is easy, the operability of the user in the indoor side is good, and the configuration of the rotation restricting mechanism is simple. Since the rotating body is urged toward the fitting position to make the moving of the rotating body difficult, the security is further improved.
In addition, when the engagement portion and the arm are at the engagement position, the arm is automatically fitted to the main body by the urging force, so that the operability is good for the user, and the fitting position is held by the urging force, so that the user is stable. is there. In order to release the fitting of the rotating body, the third person on the outdoor side needs to move the rotating body in a direction away from the near side. Because it is difficult, it is more excellent in crime prevention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a main part of a door according to a first embodiment of the present invention, (a) is a perspective view of the main part, and (b) is a sectional view of a receiving member. is there. FIG. 2 is a front view of a main part showing a state where an engagement part is not hooked on an arm when a door is at a closed position. FIG. 3 is a front view of a main part showing a state where an engagement portion is hooked on an arm when a door is at a closed position. FIG. 4 is a front view of a main part showing a state where an engagement portion is hooked on an arm when the door is at an open position. FIG. 5 is a perspective view of the entire door. FIG. 6 is a perspective view showing a main part of a door according to a second embodiment. [Description of Signs] 1 Door (door device) 3 Frame 5 Door 9 Receiver 13 Arm 17 Engagement hole 19 Engagement / removal hole 21 Engagement part 22 Rotating body 25 Rotating shaft 31 Coil spring (biasing means) 32 Rotation Restriction mechanism 33 Convex part (fitting part) 35 Fitting hole (fitted part)

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2000-110431 (JP, A) JP-A-8-128247 (JP, A) JP-A-57-172863 (JP, U) JP-A-41-21991 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) E05C 17/06 E05B 65/06

Claims (1)

(57) [Claim 1] An arm rotatably attached to one of a door and a frame, and an arm receiving member attached to the other, and the arm is provided in a longitudinal direction thereof. An engagement hole, an engagement / disengagement hole continuous with the engagement hole, wherein the receiving member is provided between the main body, the rotation body provided rotatably about the rotation axis in the main body, and the body and the rotation body; And an engaging portion provided on the rotating body. The engaging portion is moved to the engaging hole by the opening operation of the door when entering the engaging and disengaging hole. becomes freely the rotation of the rotating body by releasing the rotation restriction of the rotating member by the turn restricting mechanism together is to focus, can be saved from disengage holes, the turn restricting mechanism is fitted is provided on the rotary body Joint
And a fitted portion provided on the main body, wherein the fitted portion and the fitted portion
Is fitted to regulate the rotation of the rotating body and rotate the rotating body
When moved along the axis direction of the shaft, the fitting part and the mated part
Is disengaged and the rotating body is rotated to engage or disengage the engaging portion.
From the main body and the rotating body.
Means for biasing the rotating body to the fitting position,
Is moved to the indoor side along the axis of the rotating shaft.
A door device for releasing the fitting .