JPS5828131Y2 - door catch - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a door catch applied to a double door.

Generally, for the above-mentioned double doors, a stopper is provided on the door (left side) opposite to the door (on the right side) so that it can be fixed to the mounting frame, and a separate door catch is installed so that the door that is usable can be caught on this fixed door. However, with this, it is easy to forget to manually lock the stopper, and in such cases, when the right door is opened, the left side door is also opened, resulting in inconvenience in use.

Therefore, various door catches that have the above-mentioned stopper function have been proposed, but the present invention is capable of closing the door from either the left or right door, and also ensures that the user-friendly side can be opened first. It is in.

The drawings showing the embodiments of the present invention will be described in detail below.
In Fig. 1, 1 is a door mounting frame, 2 and 3 are doors pivoted to the jambs 1a and 1a of the door mounting frame 1, respectively, with hinges 4, and 5 is the bottom of the door mounting frame 1. This is the door catch of the present invention attached to the frame 1b.

The door catch 5, as shown in FIGS. 2 to 5, includes a hollow body 6, two movable engagers 7, 8, a lock rod 9, and elastic springs 10, 11 for the two movable engagers. The movable engaging elements 7, 8 and retainers 12, 13 are removably fixed to the doors 2, 3.

That is, the hollow main body 6 includes a box-shaped portion 6a and attachment portions 6b, 6 that extend symmetrically outward from the lower portions of both ends of the box-shaped portion 6a.
b, and are integrally molded from a material such as plastic, and have mounting holes 5c,
5c are arranged coaxially and opposite to each other with an inner hole 6d and a step 6e.

Further, each of the movable engagers 7 and 8 is provided in the tapered retaining portions 7a and 8b, and the base end is connected to the enlarged portion 7.
b and 8b are integrally molded from a material such as plastic, respectively, and from the mounting holes 6c and 6c of the box-shaped portion 6a in the hollow body 6, the engaging portions 7a,
8a to be slidable by protruding outward, and the enlarged portion 7
b, 8b and the steps 5e, 5e are relatively engaged with each other to prevent them from coming off outward, and are supported by the hollow body 6. Furthermore, both the movable engagers 7, 8 have a through hole 7C98C on the same axis. It is a penetrating attack.

Further, the lock rod 9 is integrally provided with a flange portion 9a at approximately the middle portion and is made of a metal material, and both ends of the lock rod 9 are slidably inserted into the through holes 7c and 8c to lock both movable parts. At the same time, springs 10 and 11 for elasticity of the engagers are interposed between the flange portion 9a and both the movable engagers 7 and 8, respectively.
are elastically urged outward, respectively, and the engaging portions 7a
, 8a protrude outward from the mounting holes 5e, 5e.

Furthermore, the two elastic springs 10 and 11 are set so that one has a small spring constant and the other has a large spring constant.

That is, in the illustrated example, one of the elastic springs 10 and 11
0 is used with a small spring constant, and 11 is used with a large spring constant.

Thus, one side end 9 of the lock rod 9 is connected to one movable engager 7 with the elastic spring 10 having a small spring constant interposed therebetween.
As shown in FIGS. 3 and 4, normally, the relative engagement between the engaging portion 7a and the engaging element 12 is held in a removable position in the vicinity of the retaining portion 7a, and on the other hand, The other end 9C is held inside the through hole 8C so that the movable engager 8 and the engager 13 can be freely engaged and removed relative to each other.

Further, the lock rod 9 may be provided symmetrically with the lengths 1 and 1' from the flange portion 9a to the left and right end portions 9b and 9C being the same, or, as in the illustrated example, One end is the long part 9b' and the other end 9C is the short part 9.
C/ may be formed such that l>l', and in any case, as long as both ends 9b and 9C are held in the above-mentioned positions with respect to both movable engagers 7 and 8, the shape is Optional.

Further, the above-mentioned retainers 12 and 13 are each integrally molded in a ten-sided T-shape from a material such as plastic, and
Engagement recesses 12a each having a substantially doglegged shape in plan view, which are removably engaged with the engagement portions 7a, 8a of the movable engagers 7, 8;
13a, and at least the movable engager 7 and the relative hook are removed, and the retainer 12 has a lock rod 9 and the hook that are removable at the center position of the engagement recess 12a. It is provided with a lock hole 12b that can be latched to.

Further, in the illustrated example, the other engaging element 13 is formed regardless of the presence or absence of the lock hole 12b.

The internal hole 6d of the hollow main body 6 is opened to the back side, and after the movable engaging element 7.8 is inserted through the opening, the opening is closed with the back cover 14.

In the above configuration, when using this as a door catch for a double door, the mounting frame 1 must be mounted on the upper frame, the lower frame 1b, or both the upper and lower frames at the butt position of both doors 2 and 3. Parts 6b, 6b are set with screws 15...
. . , and the engaging elements 12 and 13 are fixed to the respective doors 2 and 3 with screws 16 . . . in correspondence with the one-sided movable engaging elements 7 and 8, respectively.

In this way, when attached to the mounting frame 1 and doors 2 and 3, one door 3 is on the short hand side in the illustrated example, so the younger brother 2
When opening the door from the closed state shown in FIGS. 4 and 4, first pull the door 3 in the direction of arrow a in FIG. Movable engager 8
The movable engager 8 retreats into the hollow body 6 due to mutual sliding between the inclined surfaces with the engaging portion 8a, and the relative engagement between the engagers 8 and 13 is released. At this time, the movable engager 8 The elastic spring 10 with a small constant is compressed and retreats, and the other elastic spring 11 with a large spring constant
is not compressed, so when the movable engager 8 retreats, the lock rod 9 moves toward the other movable engager 7, and from the end of the retaining portion 7a to the one side end 9b of the lock rod 9. protrudes and fits into the lock hole 12b of the retainer 12.

Therefore, when the door 3 is opened, the other door 2 is locked by the lock rod 9 and kept in the closed state.
The other door 2 is prevented from opening in conjunction with the opening operation of one door 3.

After the door 3 is completely opened in this way, the movable engagement element 8 is returned to its original position together with the lock rod 9 by the elastic spring 10 with a small spring constant.
The door 2 can be opened by being removed from the lock hole 12b of the door 2.

In addition, when both doors 2 and 3 are opened, both movable retainers 7 and 8 and lock rod 9 are held in the same state as the closed door state shown in the figure, so that it can be accessed from either the left or right door 2 or 3. Can be closed.

However, closing both doors 2 and 3 at the same time is prevented in the same way as in the case of the intervening doors described above.

The above description is for the case where the door 3 is on the user-friendly side, but on the other hand, when the door 2 is on the user-friendly side, if the lock bar 9 is symmetrical, the two springs 10 and 11 for repulsion can be replaced. If the lock rod 9 is formed as shown in the illustrated example, it is possible to set the lock rod 9 in the opposite direction without replacing the elastic springs 10 and 11.

Therefore, assuming such a case, two engagers 12 and 13
In both cases, it is preferable to use a lock hole 12b provided in advance.

As explained above, since the door catch according to the present invention is constructed and operated, the lock rod 9 moves in conjunction with the opening operation of the user-side door 3 and is used for double doors. Since the engager 12 is locked,
When opening the door 3, the other door 2 can be reliably locked and prevented from opening at the same time, and after opening the door 3, the door 2 can be opened without requiring any special operation. It is now possible to close the door from either the left or right door, which is very convenient.Furthermore, the two movable engagers 7°8 and retainers 12 and 13 are Since springs of the same shape can be used, the plastic material can be molded using the same mold, and can therefore be manufactured at low cost. By changing the direction of the lock rod 9, the usability of the door can be easily changed.

[Brief explanation of drawings]

Fig. 1 is a front view of the door installation state showing an example of the use of the door catch according to the present invention, Fig. 2 is a plan view showing the same door catch, and Fig. 3 is a line indicated by the arrow III-III in Fig. 2. The cross-sectional views, FIGS. 4 and 5 are longitudinal sectional plan views of the same door catch, with FIG. 4 showing the door in its closed state and FIG. 5 showing its state when the door is initially opened. 1...Door mounting frame, 2,3...Door,
5...Door catch, 6...Hollow body, 6C...Mounting hole, 7, 8...Movable engager, 7c, 8c... ...Through hole of movable engager, 9
...Lock rod, 9a...Flange portion of lock rod, 9b'... Long portion of lock rod, 90
'...Short part of lock rod, 10.11...
・・Spring for repelling, 12.13・・・・Hoako.

Claims (2)

[Scope of utility model registration request] (1) The hollow body fixed to the door mounting frame has an engaging element for each door and two removable movable engaging elements with lock holes that protrude outward from the left and right mounting holes so that they can slide. , lock rods are slidably installed, the ends of which are fitted into through-holes which are arranged oppositely to prevent detachment, and which are coaxially drilled in both movable engagers, and each of which has a flange portion attached thereto. , between the flange portion and each movable engager, springs for repelling the movable engagers with different spring constants are interposed, so that the lock rod moves together with one movable retainer and the other movable engager A door catch that is installed so that it appears and disappears from the end. (2) The lock rod has a long part on one side and a short part on the other side with the flange as a boundary, and is formed so that an elastic spring with a large spring constant is interposed in the short part. A door catch according to claim 1 of the utility model registration claim.