JPH0620834U - Folding door locking device - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] The double-folded door on the ceiling is rotated by abutting the door contact provided on the building and the abutting member movably in the moving direction of the door. (EN) Provided is a lock device for a double-fold door that can maintain the aesthetics of a building without forming a break or the like in a moving part. [Structure] Engagement member 30 provided in first door half 1
And the second door half 5 is provided, is engaged with the engaging member in a disengageable manner to hold the first and second door halves in a folded state, and When the door half body comes into contact with the door stop, there is provided an engagement holding mechanism 60 which releases the holding by the pressing force transmitted from the contact member brought into contact with the door stop.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is composed of first and second door halves, and the first and second door halves are folded in two to be in an open state, while the two door halves are expanded. The present invention relates to a lock device for a double-folding door configured to be in a closed state in a state.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, a double-folding door shown in FIGS. 2 to 4 has been known. Reference numeral 1 in the drawing denotes a first door half body, and this first door half body 1 has one side end thereof attached to a passage side wall 3 of a structure through a centrally suspended door closer 2. The center hanging type door closer 2 is urged to rotate counterclockwise in FIGS. 2 to 4. One end side of a second door half body 5 is attached to the other end side of the first door half body 1 through a hinge type door closer 4, and the second door half body 5 is the hinge. The mold door closer 4 is urged to rotate counterclockwise in FIGS. The first and second door halves 1 and 5 are held in a state of being folded in two by a locking mechanism 6 which will be described later, and in this state are stored in a door storage portion 7 provided on the passage side wall 3. It is configured to be. Further, the first and second door halves 1 and 5 thus housed in the door housing part 7 are configured to be held in a housed state by another locking mechanism (not shown). There is. The other locking mechanism is configured to release the locking when receiving an electric signal from a smoke detector or the like.

A conventional example of the lock device 10 applied to the double-fold door will be described below with reference to FIG. As shown in the figure, the locking device 10 includes an engaging member 30 fixed to an upper end of a side surface of the second door half body 5, and an engaging member 3 attached to an upper end of a side surface of the first door half body 1. It is composed of an engagement holding mechanism 31 which holds the first door half body 1 and the second door half body 5 in a folded state by engaging with 0. The engagement member 30 is fixed to the second door half body 5 with a screw or the like, and when the first and second door half bodies 1 and 5 are folded and folded, the engagement holding mechanism 31 is provided. Has a protrusion 32 that engages with. In the fixed state, it projects from the second door half body 5 so as to be able to project. A locking hole (locking portion) 33 is provided through the tip of the engaging member 30 projecting toward the engagement holding mechanism 31.

The engagement holding mechanism 31 includes a latch lever 34, a rotary shaft 35 that supports the latch lever 34 in a vertically rotatable manner, and a rotatable shaft 35 that supports the latch lever 34 in a rotatable manner. And a support case 36 that houses the rotating shaft 35. The latch lever 34 has a locking claw 37 that engages with the locking hole 33 of the engaging member 30 at the tip, and a passage ceiling 40 where the door stops when the door lever 7 rotates in the closing direction. It has a release protrusion 38 formed in a mountain shape, which is pressed downward when abutting to rotate the latch lever 34 counterclockwise vertically. The latch lever 34 is attached so as to be vertically rotatable about a rotary shaft 35 penetrating the base end thereof, and is always rotated clockwise by a coil spring 39 attached to the rotary shaft 35. Energized. In the engagement holding mechanism 31, when the first and second door halves 1 and 5 are rotated in the closing direction from the door storage portion 7, the release protrusion 38 has the release projection 38 until the predetermined stop position is reached. It is adapted to project above the half body 1.

The operation of the lock device 10 will be described below by using the procedure for shutting off the passage between the passage and the room in the building by the first and second door halves 1 and 5 when a fire occurs. Normally, the first and second door halves 1 and 5 are stored in the door storage portion 7 in a state in which the locking hole 33 and the locking claw 37 are engaged with each other. When the engagement between the locking mechanism 40 installed in the door housing 7 and the second door half body 5 is released according to the lock release signal issued, the locking hole 33 and the locking claw 37 are released. In the engaged state, the first and second door halves 1 and 5 can be integrally rotated so as to rotate counterclockwise from the door storage portion 7 in FIGS. 2 to 4.

The lock device 10 is released while the first and second door halves 1 and 5 are rotated between the door storage portion 7 and a predetermined stop position of the first door half 1. Although the protrusion 38 remains protruding above the first door half body 1, the release protrusion 38 does not come into contact with the ceiling of the building during rotation. When the first and second door halves 1 and 5 that are manually or automatically rotated reach the stop position, the passage ceiling 40 at the stop position is above the first and second door halves 1 and 5, in particular. Since it is formed close to the end face, the release protrusion 38 is brought into contact with the lower surface of the passage ceiling 40 and pushed downward from the above-mentioned protruding state. In the locking device 10, the release projection 38 pushed downward rotates in the counterclockwise direction in FIG. 5, and the locking claw 37 rotates counterclockwise in conjunction with the release projection 38. The engagement with the locking hole 33 is released, and the second door half body 5 can be rotated. When the first and second door halves 1 and 5 are located at desired positions in the order described above, as shown in FIG. 4, the space between the room and the passage can be closed.

[0007]

[Problems to be solved by the device]

 However, in the case of the lock device for a double-fold door as described above, the ceiling of the building in which the double-fold door is located in the rotation range is lowered at the door stop position and its vicinity, and the other parts are rotated. It is necessary to form the first door half 1 at a height in a range where the release projections 38 do not come into contact with each other, which causes problems such as a decrease in ceiling construction efficiency and an increase in construction cost. In addition, since the ceiling is broken, it has a problem that the appearance is affected.

The present invention has been made in view of the above-mentioned problems, and the abutment member provided on a building is brought into contact with an abutting member movably in the moving direction of the door, so that An object of the present invention is to provide a lock device for a double-folding door that can maintain the aesthetics of a building without forming a break or the like at the portion where the double-folding door rotates.

[0009]

[Means for Solving the Problems]

 In the lock device for a double-fold door of the present invention, the lock device is provided on a side of the second door half body facing the first door half body when the first and second door half bodies are folded in two. And an engagement member provided with a locking portion on one side of its tip and an engagement member provided on the second door half when the first and second door halves are stacked in half. It is provided on the first door half body facing the mating member and is engaged with the engaging member in a disengageable manner to hold the first and second door half bodies in a folded state. An engagement holding mechanism for releasing the holding, wherein the engagement holding mechanism is abutted against the door stop when the first door half abuts on the door stop fixed to the structure. A contact member and a locking pawl that engages with the locking portion when the first and second door halves are folded in two, and the locking pawl is constantly biased toward the locking portion, Bonito A lock device for a double-fold door, wherein when a member is brought into contact with the door stop, the member is pressed by the contact member and is released from the locking portion against the biasing force. And

[0010]

[Action]

 According to the two-fold door locking device of the present invention, when the door is moved in the closing direction, the abutting member abuts against the door stop and is pushed into the engagement holding mechanism, and is transmitted from the abutting member. The locking claw moves by the action of the applied pressing force, and the engagement between the locking claw and the engaging member is released.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. Reference numeral 50 in the figure is a lock device for the double-folding door of the present embodiment. The locking device 50 is different from the locking device 10 in the engagement holding mechanism 60 formed by changing the internal structure of the engagement holding mechanism 31, and the same components as those in FIGS. The same reference numerals are given to simplify the description. As shown in FIG. 1, the locking device 50 includes an engaging member 30 fixed to the upper end of the side surface of the second door half 5 and an engaging member 30 attached to the upper end of the side surface of the first door half 1. The engagement holding mechanism 60 integrally connects the first door half body 1 and the second door half body 5 by engaging with 30.

The engagement holding mechanism 60 includes an operating plate 61, a latch lever 62 that engages with the locking hole 33, and a support case 63 that houses the operating plate 61 and the latch lever 62. . As shown in FIG. 1, the actuating plate 61 is a substantially T-shaped member, and the distal end portion of the long side thereof is fixed to the first rotating shaft 64 and is vertically rotatable. The first rotating shaft 64 is horizontally arranged below the latch lever 62 so as to be rotatable. On one short side of the operating plate 61, a pressing projection 65 for pushing down the latch lever 62 when the operating plate 61 rotates counterclockwise is provided. On the other short side of the operating plate 61, a push pin (contact member) 66 that abuts against the door stop 70 at the open position of the door is projected. The latch lever 62 is provided on the upper side of the support case 63 on the side of the first door half body 1 facing the second door half body 5 in parallel with the first rotating shaft 64. It is an elongated plate member having a base end portion attached to a rotating shaft 67, and is provided so as to be vertically rotatable on a rotation surface parallel to the operating plate 61. A support bar 68, which receives the pressing force of the pressing protrusion 65, is provided at the center of the latch lever 62 in a direction perpendicular to the surface direction. The pressure-bearing bar 68 projects onto the movement path of the pressing protrusion 65 as the operating plate 61 rotates. At the tip of the latch lever 62, a locking claw 69 that engages with the locking hole 33 is projected. The latch lever 62 is urged in the clockwise direction in the figure by a coil spring (not shown) attached to the second rotating shaft 67. The engagement holding mechanism 60 is set in a state where the upper surface of the pressure bearing bar 68 is in contact with the lower surface of the pressing protrusion 65, so that the operating plate 61 is in a substantially upright state, and the latch lever 62 is in a substantially first position. It is in a state of horizontally projecting to the side of the first door half 1 facing the second door half 5. The push pin 66 is biased in the direction of the door stop 70 by the action of the coil spring via the latch lever 62. Further, the push pin 66 may have another form such as a plate shape as long as it can transmit the pressing force at the time of contact from the door stop 70 into the engagement holding mechanism 60.

The operation and effect of this embodiment will be described below. Normally, the locking device 50 is stored in the door storage portion 7 with the locking hole 33 and the locking claw 69 engaged with each other. However, in the event of a fire, the locking mechanism is not shown. When the stop is released, the first and second door halves 1 and 5 are integrated with the locking hole 33 and the locking claw 69 in the above-mentioned engaged state, and the door housing portion 7 is connected to the door storage portion 7 as shown in FIGS. It becomes possible to rotate counterclockwise in the middle of 4. While the push pin 66 due to the rotation remains protruding in the closing direction of the first door half body 1 from the door storage portion 7 to the predetermined stop position of the first door half body 1, the push pin 66 is Smooth rotation is possible without touching the building. If the first or second door halves 1 and 5 that rotate automatically by hand or hand reach the door stop 70 fixed at the stop position of the door such as the ceiling of the building, the push pin 66 will hit the door stop. It is abutted against 70 and pushed into the inside of the engagement holding mechanism 60. Inside the engagement holding mechanism 60, at the same time when the push pin 66 is pushed inward of the engagement holding mechanism 60, the operating plate 61 rotates counterclockwise, but the pressing protrusion 65 rotates as the operating plate 61 rotates. Pushes the bearing bar 68 downward, and the latch lever 62 rotates counterclockwise. As a result of the rotation of the latch lever 62, the engagement between the locking hole 33 and the locking claw 69 is released, so that the second door half 5 can rotate with respect to the first door half 1. Become.

Therefore, the locking device 50 of the present embodiment is such that when the first door half body 1 is rotated in the closing direction, the push pin protruding in the direction perpendicular to the surface of the first door half body 1. The engagement between the locking hole 33 and the locking claw 69 is released by the pressing force of the contact 66 with the door stop 70, which is pushed into the engagement holding mechanism 60. Since it is not necessary to perform construction in accordance with the contact position of the half body 1, it is possible to improve the construction efficiency of buildings and reduce construction costs. Further, since the door stop 70 is easy to install and has a high degree of freedom in size, shape and installation position, it does not affect the design of the building and the like, and has little effect on the aesthetics of the building.

[0015]

[Effect of device]

 As described above, according to the lock device for a double-fold door of the present invention, when the first and second door halves are folded in half, the first door of the second door half is folded. When the first and second door halves are stacked in half with the engaging member provided on the side facing the door half and having the locking portion on one side of the tip end thereof, The first and second door halves are provided on the first door half, which faces an engaging member provided on the second door half, and engages with the engaging member in a disengaged state. And an engagement holding mechanism for holding and holding the two in a folded state, and the engagement holding mechanism abuts on the door stop where the first door half is fixed to the structure. At this time, there is an abutting member that abuts against the door stop, and a locking claw that engages with the locking portion when the first and second door halves are folded in two. Always locked In addition, when the contact member is urged toward the door stop, the contact member is pressed by the contact member and disengages from the locking portion against the urging force. When the first door half is rotated in the closing direction, the contact member protruding in the direction perpendicular to the surface of the first door half comes into contact with the door stop and is pushed into the engagement holding mechanism. Since the engagement between the locking part and the locking claw is released by the action of pressure, it is not necessary to construct the ceiling or wall in line with the contact position of the first door half, and the construction efficiency of the building can be improved. It is possible to improve and reduce construction costs. Moreover, since the door stop is easy to install and has a high degree of freedom in its size, shape, and installation position, it has no effect on the design of the building and has little effect on the aesthetics of the building.

[Brief description of drawings]

FIG. 1 is a side view showing a lock device for a folding door according to an embodiment of the present invention.

FIG. 2 is a plan view showing a stored state in a door storage portion of a lock device for a folding door.

FIG. 3 is a plan view showing rotation of the first door half body of FIG. 2 in a closing direction.

FIG. 4 is a plan view showing rotation of the second door half body in FIG. 2 in a closing direction.

FIG. 5 is a side view showing a conventional lock device for a folding door.

[Explanation of symbols]

 1 1st door half body 5 2nd door half body 30 Engagement member 33 Locking part (locking hole) 50 Lock device 66 Abutting member (push pin) 69 Locking claw 70 Door stop

Claims (1)

[Scope of utility model registration request] 1. Comprised of first and second door halves,
A lock device configured to be in an open state when the first and second door halves are folded into two and to be in a closed state when the both door halves are unfolded. And a second door half body is provided on a side of the second door half body facing the first door half body when the second door half body is folded and folded, and a locking portion is provided on one end portion of the tip end portion. Provided on the first door half that faces the engaging member provided on the second door half when the first and second door halves are overlapped in half And an engaging and holding mechanism for releasably engaging the engaging member to hold the first and second door halves in a folded state and releasing the holding. A first and a second door, wherein the engagement holding mechanism abuts against the door stop when the first door half comes into contact with the door stop fixed to the structure; The body has a locking claw that engages with the locking part in a folded state, the locking claw is constantly urged toward the locking part, and the contact member is in contact with the door stop. At this time, the lock device for the double-fold door is characterized in that the lock device is pushed by the abutting member and is released from the locking portion against the bias.