JPS6212767Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a locking device for an opening/closing door in which the door body, which is made up of a plurality of horizontally wide panel bodies connected vertically, is operated to open and close vertically along left and right guide rails. be.

Generally, this type of door is provided with a locking device that can automatically lock in conjunction with the closing operation of the door. In the conventional locking device, as shown in FIG. 6, a latch portion c, which is pivoted to the left and right by a pivot pin b at the end of a panel body a and protrudes from the end of the panel body a, is urged by a coil spring mechanism d to a protruding position where it can be engaged with a latch hook f provided on a guide rail e, and in conjunction with the latch portion c coming into contact with an upper guide surface g of the latch hook f at a position just before the door is closed, the latch portion c is rotated inward against the coil spring mechanism d and retracts from the end of the panel body a, and when the door is closed, the latch portion c returns to the protruding position by the urging force of the coil spring mechanism d and engages with the latch hook f, thereby automatically locking. However, in this device, the unlocking operation of the latch portion c is performed by rotating the latch portion c in conjunction with the rotating operation of the handle i which is connected to the latch portion c via the wire h. However, since the latch portion c needs to be provided on both the left and right sides of the panel body a, the handle i and each latch portion c must be arranged in a substantially straight line.
This is not desirable because it restricts the installation position of the latch part c, impairs the aesthetic appearance by exposing the wire, and the exposed wire can catch on equipment, etc. Therefore, it has been proposed to connect the latch part c and the handle i using an inner wire type wire, and to install the wire inside the frame part of the panel body a, and to make the installation position of the latch part c not restricted by the installation position of the handle part i, but this method requires that the latch part not only protrudes and retracts by horizontal movement in the left and right direction, but also moves in the front and rear direction perpendicular to the left and right direction in conjunction with the closing operation of the opening and closing door, so that the latch part must be automatically locked, and therefore the latch part must be biased in both the left and right direction where the latch part protrudes and retracts, and the front and rear direction where the latch part moves by contacting the upper guide surface of the latch hook when the opening and closing door is lowered, which not only complicates the structure but also creates a new defect that the entire latch part becomes thicker in the front and rear direction.

The present invention was devised in order to eliminate these drawbacks in view of the above-mentioned actual situation, and even if the latch part is connected to the handle using an inner wire method, it can be used without complicating the structure at all. Moreover, it is an object of the present invention to provide a locking device for an opening/closing door that does not particularly increase the thickness of the entire latch portion in the longitudinal direction.

The structure of the present invention will be explained based on an embodiment shown in the drawings. Reference numeral 1 is an opening/closing door provided at an opening of a building, etc., and the opening/closing door 1 has a wide width in the left and right direction. A door body 3 is constructed by connecting a plurality of panel bodies 2 in the vertical direction, and its lower half is erected on both left and right sides of the opening, and its upper half extends in a horizontal front-rear direction from the upper side of the opening. The opening can be opened and closed by moving up and down while being guided by a guide rail 4.

Appropriate panel bodies 2 among the plurality of panel bodies 2
A handle 6 for unlocking and unlocking a latch portion 5, which will be described later, is rotatably supported on the vertical arm 2b of a. That is, the handle 6 is fixed to both ends of a support shaft 6a that passes through the vertical support 2b from the indoor side to the outdoor side, and the support shaft 6a has a rotary plate 8 located inside a case 7 installed inside the vertical support 2b. is fixed, and the rotating plate 8 rotates in conjunction with the rotating operation of the handle 6. Reference numeral 9 denotes a sliding body disposed in the case 7 so as to be slidable in the vertical direction, and the sliding body 9 has a protrusion 8a projecting from the rotary plate 8 in the left-right direction intersecting the sliding direction. A guide elongated hole 9a into which the guide hole 9a fits is bored. A projection 8a that rotates upward in conjunction with the rotation of the handle 6 from a vertically facing locked position to a horizontally facing unlocked position has a guide elongated hole 9a.
By moving the slider 9, the sliding body 9 moves linearly in the vertical direction. 10 is a lock knob rotatably supported on the side panel of the interior;
When the lock knob 10 is rotated from the release position to the lock position, the cam 10b integrally fixed to the pivot shaft 10a of the lock knob 10 is rotated to the rotary plate 8 located at the lock position. The unlocking operation of the handle 6 is restricted by being engaged with a protruding lock hook 8b. In addition, the rotation support shaft 10b
A chevron-shaped contact portion 10c is protruded from the case 7, and when the lock knob 10 is located at the unlocked position, one side of the contact portion 10c comes into contact with the ammunition 11 housed in the case 7. When the lock knob 10 is pushed toward the unlocked position, and conversely, the lock knob 10 is placed in the lock position, the other side surface of the contact portion 10c comes into contact with the bullet 11, and the lock knob 10 is It is designed to be biased toward the lock position. On the other hand, the bottom surface of the case 7 is bent into a substantially U-shape when viewed from the side, and a pair of left and right outer wires 12
This constitutes the outer stopper fixing plate 7a. One end of the inner wire 12a housed in the outer wire 12 is attached and fixed to a wire locking piece 9b bent at the lower part of the sliding body 9.

Reference numeral 13 denotes a bracket constituting the latch portion 5 provided on both left and right vertical frames 2d of the panel body 2a, and in this embodiment, the bracket 13 is also used as a hinge that connects the panel body 2 in the vertical direction. ing. That is, the lower and upper halves of the bracket 13 are rotatably supported via support pipes 13a in the left and right direction, and the lower and upper halves are fixed to the panel bodies 2 and 2a by bolts, respectively. By fixing via 14, both panel bodies 2, 2a are connected in a bendable manner. A cover body 15 is fixed to the bracket 13 on the side of the panel body 2a.
There are latch bodies 16 on both left and right side plates 15a and 15b.
The guide holes 16a, 1 pass through so as to be slidable in the left and right direction.
6b is drilled. Of the guide holes, the guide hole 16a on the guide rail 4 side, that is, the outer guide hole 16a, is wide in the front-rear direction, and the latch body passing therethrough is engaged with a latch 18 whose distal end protrudes from the guide rail 4 and corresponds to a latch catch 18, which will be described later. It is configured to be able to swing back and forth between the stop position and the release position where it is released from the latch 18. In addition, the inner side plate 16b also serves as an outer fixing plate for the outer wire 12, and the other end of the inner wire 12a protruding from the outer wire 12 into the cover body 15 is attached to a protrusion 1 protruding from the latch body.
It is fixed at 6c. Protrusion 16c and inner side plate 1
A leaf spring 17 is interposed between the latch body 16 and the latch body 16, and biases the latch body 16 toward a protruding position in which the distal end thereof protrudes in the left-right direction and engages and locks the latch hook 18. That is, the leaf spring 17 is formed into a substantially V-shape with a folded middle part, and one half is fixed to the inner side plate 15a via a fixing bolt 17a, and the other half is fixed to the protrusion of the latch body 16. 16c, the latch body 16 is biased so that its tip portion largely protrudes toward the latch hook 18, but the leaf spring 17 further has the following characteristics as shown in FIG. The latch body 16 is fixed with one half deviating from the other half by an angle θ.
It is biased toward the locking position corresponding to the latch hook 18. The latch 18 is constituted by an upper guide oblique side 18a and a lower locking side 18b, and is held in a protruding position in the left-right direction and in a locking position in the front-rear direction by a leaf spring 17. The tip of the latch body 16 that protrudes from the biased latch body 16 at the position just before the opening/closing door 1 is completely closed is the guiding oblique side 18a.
The guiding oblique side 18a is forcibly moved from the locking position to the release position against the longitudinal biasing force of the leaf spring 17 while remaining in the protruding position. The forced movement is canceled and the locking side 1 is automatically returned to the locking position side.
8b from below and is locked. On the other hand, in the unlocking operation, the handle 6 is biased toward the locked position by the biasing force of the leaf spring 17.
When the sliding body 9 moves upward by a predetermined length to pull the inner wire 12a, the latch body 16 is retracted from the protruding position and locked with the latch catch 18. It is configured to release the .

Next, the operation of the present invention constructed as described above will be explained. The open/close door 1 housed in the upper half of the guide rail 4 extending in the horizontal front-rear direction can be closed by pulling the door body 3 downward. Automatically locks in conjunction. That is, the latch body 16 is biased and held by the leaf spring 17 at a protruding position in the left-right direction and at a locking position in the front-back direction, but the latch body 16 is latched just before the closing is completed. After the latch body 16 comes into contact with the guide oblique side 18a of the latch body 18 and is forcibly moved from the locking position to the unlocking position side, the latch body 16 automatically returns to the locking position by the longitudinal biasing force of the leaf spring 17 when the latch body 16 is closed. It will be locked.

In such an automatic locking operation or an unlocking operation as described above, the latch body 16 is moved by the leaf spring 17.
Due to
It is simultaneously biased in both the left and right directions, which is necessary in relation to the This is latch body 16
A folded leaf spring 17 with a bent middle part is used as the bullet for biasing the spring, and the biasing force in the left and right direction is generated by the leaf spring 1.
The elastic force along the bending direction of the plate spring 17 is utilized, and the biasing force in the front-rear direction is created by utilizing the strong restoring force caused by the displacement of both halves of the leaf spring 17 starting from the bending part. That is, the latch body 16 is biased in both the left and right and front and rear directions by using the elastic force in the bending direction of the folded leaf spring 17 and the restoring force due to the displacement. It is not necessary to tension the coil spring diagonally in the front-rear direction so that the device itself protrudes thickly in the front-rear direction and bias it in the left-right and front-rear directions, as in the case of the device used in the above-mentioned device. can do.
Moreover, in this embodiment, since both halves of the leaf spring 17 are fixed with a deviation of an angle θ in advance, the return of the latch body 16 to the locking position is reliable and there is no possibility of erroneous operation. In this case, the deviation in angle θ is within a range that can be sufficiently absorbed by the swinging stroke of the latch body 16 in the longitudinal direction, so that the longitudinal thickness does not increase.

In summary, the present invention provides an opening/closing door in which a door body made up of a plurality of panel bodies connected vertically is moved up and down along left and right guide rails to open and close. A latch body is provided which engages and disengages from a latch provided on a guide rail and moves in the front and rear direction to engage and disengage from the latch, and the latch body protrudes from the panel body via a folded leaf spring. The latch body is biased to the protruding position where it locks to the latch, and is biased to the locking position where it locks to the latch by the restoring force caused by the longitudinal displacement of both halves of the leaf spring. , can be biased in both left and right and front and rear directions by a single leaf spring, and even if it is an inner wire type, it can be locked automatically when the door body is lowered, and manually by a handle connected to the latch body. The unlocking operation can be performed smoothly without complicating the structure. In addition, the longitudinal biasing force of the latch body utilizes the restoring force caused by the longitudinal displacement based on the bent portions of both halves of the leaf spring, so the thickness of the entire device in the longitudinal direction is The thickness can be set to correspond to the longitudinal movement stroke of the latch body, and therefore the thickness of the entire device does not have to be particularly thick unlike those using coil springs, and the locking device does not protrude from the panel body. The width can be made smaller.

[Brief explanation of drawings]

The drawings show one embodiment of a locking device for an opening/closing door according to the present invention, in which Fig. 1 is an overall perspective view, Fig. 2 is a front view of the main part, and Fig. 3 A and B are a handle portion. Partially cutaway front view, side view, Figure 4 A, B
5 is a side view of the guide rail, FIG. 6 is an explanatory diagram of the operation, and FIG.
Figures A, B, C, and D are front views of main parts showing conventional examples. In the figure, 1 is an opening/closing door, 2 is a panel body, 2a is a panel body with a locking device, 3 is a door body, 4 is a guide rail, 5 is a latch part, 6 is a handle, 7 is a case, 8 is a rotating plate, 8a is a protrusion, 8b is a lock, 9 is a sliding body, 9a is a guide slot, 10 is a lock knob, 11
12 is an outer wire, 12a is an inner wire, 13 is a bracket, 14 is a fixing bolt, 15 is a cover body, 16 is a latch body, 17 is a leaf spring, and 18 is a latch.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In an opening/closing door in which a door body made up of a plurality of panel bodies connected vertically is moved up and down along left and right guide rails to open and close, A latch body that retracts and retracts to engage and disengage from a latch provided on the guide rail and moves in the front and rear direction to engage and disengage from the latch is provided, and the latch body is moved from the panel body via a folded leaf spring. It is characterized by being biased to the protruding position where it protrudes and is locked to the latch, and biased to the locking position where it is locked to the latch by the restoring force due to the longitudinal displacement of both halves of the leaf spring. A locking device for a door that opens and closes. 2. A locking device for an opening/closing door according to claim 1, wherein both halves of the leaf spring are offset by a predetermined angle.