JPH0321585Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a door opening/closing lock structure, and in particular to a safety door opening/closing lock structure that can only be opened in the direction in which the door handle is pulled. be.

[Prior art]

As shown in FIG. 4, the conventional double-sided opening/closing door has both hinges 12 provided on the support part 11 of the door 10, and the door 10 can be opened by pushing or pulling either one of the handles 13, 14. was opening and closing.

[Problems with conventional technology]

However, since the door 10 opens from both directions, for example, if there are people in positions A and B in FIG.
When attempting to open or close the door at position 0, the door can be opened from both sides, so for example, if a person in position A tries to push the door open, there is a risk that the door will collide with the person in position B. There was a problem. In this case, when the person at position B tries to open door 10 by pulling it, the person at position A is pushing it open, so the opening speed is doubled and door 10 is opened by the person at position A.
There have also been cases of injuries caused by collisions with zeros.

On the other hand, conventionally, there are many doors that can only be opened on one side, but in the case of a door that can only be opened on one side, it must be pushed open from one side, so if the door is pushed open, the door will collide with the person on the opposite side, causing an accident. There was a problem that it could cause

The present invention was developed in view of these circumstances, and aims to prevent accidents when opening and closing the door by making the door a double-sided door that can only be opened by pulling the door. The purpose is to provide a door opening/closing lock structure.

[Means to solve problems]

The door opening/closing lock structure according to the present invention in accordance with the above object is an opening/closing lock structure for a double-sided opening/closing door, in which front clasp receiving portions are provided opposite to both sides of a fixed body serving as a frame of the door to be opened/closed. and the rear clasp receiving part, respectively engage with the front clasp receiving part and the rear clasp receiving part, and the parts of the tip part that do not come into contact with the front clasp receiving part and the rear clasp receiving part respectively slide. A front clasp and a rear clasp that form a surface and are pressed in a protruding state from the door closing surface of the door body and can be freely moved in and out, and a front handle portion of the door provided at the front and rear parts of the door body, respectively. It has a rear handle portion, a front clasp in/out link mechanism that connects the front clasp and the rear handle, and a rear clasp in/out link mechanism that connects the rear clasp and the front handle. It is composed of

Here, the front clasp in/out link mechanism includes a connecting lever body that moves in and out from the front of the front clasp, and a connecting rod that has one end connected to the connecting lever body and the other end connected to the rear handle part. The rear clasp in/out link mechanism may include a connecting lever body for moving the rear clasp in and out, and a connecting rod having one end connected to the connecting lever body and the other end connected to the front handle. It may be configured by having In addition to door handles that are structured to open and close the door by pulling or pushing the door handle, there are also those that open and close the door by rotating the door handle and releasing the clasp.

Furthermore, the above-mentioned sliding surface includes, for example, one whose tip is formed in an arc shape to form a sliding surface, as well as one whose tip is formed obliquely to form a sliding surface.

[Effect]

Next, to explain the operation of the door opening/closing lock structure according to the present invention, both sides of the fixed body that forms the frame of the door to be opened and closed are provided with a front clasp receiving part and a rear clasp receiving part facing each other. A front clasp and a rear clasp, which engage with the front clasp receiving portion and the rear latching plate receiving portion, respectively, are provided so as to be pressed against a protruding body from the door closing surface of the door. A rear handle and a front handle provided at the rear and front parts of the door body are respectively connected to the front clasp and rear clasp via a link mechanism, and by operating the front handle, The rear catch then retracts into the closing surface of the door, releasing the lock and opening the door by pulling the front handle toward you.

On the other hand, by operating the rear handle, the front latch is retracted into the closing surface of the door via the link mechanism, releasing the lock, and by further pulling the rear handle towards you. , the door will open towards you.

In this case, the front clasp and rear clasp are provided facing each other, and the front clasp receiving portion and rear latching metal receiving portion, which are the seats for the front latches, are also provided facing each other, so when the door is pushed, It never opens.

Furthermore, the parts of the front and rear clasps that do not come into contact with the clasp receivers are sliding surfaces, so even if the clasps are pressed and protrude from the door closing surface, when closing the door, It comes into contact with the fixed body that forms the door frame, is pushed, and automatically retracts, allowing the door to open and close.

〔Example〕

Next, an embodiment embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention.

Here, FIG. 1 is a plan view showing a door opening/closing lock structure according to an embodiment of the present invention, and FIG.
A sectional view taken along the line A--A in the figure, and FIG. 3 is a partial plan view of a door opening/closing lock structure according to another embodiment.

As shown in FIGS. 1 and 2, a door opening/closing lock structure 15 according to an embodiment of the present invention is arranged opposite to both sides of a wall 16, which is an example of a fixed body serving as a frame of a door to be opened and closed. A front catch 17 and a rear catch 18 are provided, a front catch 19 and a rear catch 20 engage with the front catch 17 and the rear catch 18, respectively, and a door body 21. a front handle part 22 and a rear handle part 23 provided at the front and rear parts of the front handle part 22 and a rear handle part 23, a front stopper in/out link mechanism 24 that connects the front stopper 19 and the rear handle part 23, and the rear stopper 20. and a rear clasp in/out link mechanism 25 that connects the front handle portion 22 and the front handle portion 22. These will be explained in detail below.

The front clasp receiver 17 and the rear clasp receiver 18, which are attached to both sides of the wall 16, are made of hard metal (for example, stainless steel).
As shown in the figure, it has an L-shaped cross section.

This front clasp receiver 17 and rear clasp receiver 1
The front clasp 19 and the rear clasp 20, which engage with each other, have flat receiving surfaces 26, 26a at their tips, but arcuate sliding surfaces 27, 28 on the opposite sides. is forming. On the other hand, sliding guides 29 and 30 are arranged on the door body 21 so that the front clasp receiver 17 and the rear clasp receiver 18 can be freely moved in and out.
Spring 31, 32 whose other end is attached to a fixing plate is provided at the intermediate part between 7 and the rear clasp receiver 18, and always presses the front clasp receiver 17 and the rear clasp receiver 18. From the door closing surface 33,
The tips of the front clasp receiver 17 and the rear clasp receiver 18 are designed to protrude.

Elongated holes 34 and 35 are formed in the backs of the front clasp receiver 17 and the rear clasp receiver 18, respectively. An arm 36a of a connecting lever body 36, which constitutes the front stopper in/out link mechanism 24 and is rotatably fixed by a pin 36d, is fitted into the elongated hole 34, and into the elongated hole 35, An arm 39a of a connecting lever body 39 that constitutes the rear clasp in/out link mechanism 24 and is rotatably fixed by a pin 39d is fitted.

The connecting lever body 36 is provided with another arm 36b, and the arm 36b is rotatably connected to a connecting rod 40 which is rotatably connected to the tip of the rear handle portion 23.

In addition, another arm 3 is also connected to the connecting lever body 39.
9b is provided, and the arm 39b is rotatably connected to a connecting rod 41 which is rotatably connected to the tip of the front handle portion 22.

A stopper 36c is provided in the middle of the arm 36a, and a stopper 36c is provided in the middle of the arm 36a.
is provided with a stopper receiving portion 42 that pairs with the stopper 36c, so that when the front handle 22a is pulled, the connecting lever body 36 does not move.
The rear handle portion 23 is operable.

On the other hand, a stopper 39c is provided in the middle of the arm 39a, and a stopper receiving portion 43 that pairs with the stopper 39c is provided on the rear handle portion 23, so that when the rear handle 23a is pulled, the connecting lever The body 39 becomes immobile,
The front handle portion 22 cannot be operated.

The front handle portion 22 and the rear handle portion 23 are provided with springs 44 and 45, respectively, so that the handles 22 and 23 are normally in a retracted state.

Next, the operation of the door opening/closing lock structure according to the above embodiment will be explained. Since the mechanism for operating the front clasp 19 and the mechanism for operating the rear clasp 20 are the same, Only the mechanism to be operated will be explained.

When the front handle 22a is pulled, the connecting rod 41 connected to the tip of the front handle body 22 is pulled in the direction of the front handle 22a, thereby pulling the arm 39b, so that the connecting lever body 39 is moved clockwise. Rotate. As the arm 39a rotates clockwise with this movement, the rear stopper 20 is retracted against the pressing force of the spring 32. Therefore, if the front handle 22a is further pulled, the door body 21 will open.

On the other hand, by pulling the front handle 22a, the stopper receiving portion 42 is lowered and comes into contact with the stopper 36c, so that the connecting lever body 36 is locked and does not move. Therefore, when operating the front handle 22a from the front of the door body 21, the rear handle 22a
3a cannot be operated.

After opening the door, if you release the front handle 22a, the spring 44 will cause the front handle 22a to return, and the spring 32 will return the rear latch 20 to its original state, but even if the door is closed, Front clasp 2
0 comes into contact with the wall 16 and is retracted, allowing the door to be freely closed.

Next, another embodiment of the present invention shown in FIG. 3 will be described, but in order to avoid redundant explanation, only the differences from the above embodiment will be explained.

A guide ring 46 is fixed to the door body 46a,
A drive shaft 48 of a handle portion 47 is rotatably attached to the guide ring 46 . A handle 49 is attached to one end of the drive shaft 48, and a cylindrical projection 50 is provided at the other end. A cylindrical body 51 is fitted into the drive shaft 48 and has a diagonal groove 50a into which the cylindrical projection 50 is fitted.

A detent 52 and a guide 53 that engages with the detent 52 and slidably fits into the cylindrical body 51 are disposed on the outside of the cylindrical body 51 to rotate the handle 49 at an appropriate angle. Therefore, the cylindrical body 51 moves back and forth linearly. A connecting portion 54 is provided at the tip of this cylindrical body, and the connecting rod 41 or 40 according to the embodiment described above is rotatably connected thereto.

Further, a stopper receiver 55 is formed on the side of the cylinder 51, and the stopper 3 according to the embodiment
6c or 39c.

In this embodiment, the stopper receiving portion is provided on the cylindrical body 51, but it may also be provided on the drive shaft 48, and in this case, the stopper receiving portion will rotate.

Further, in the above embodiment, the drive shaft 48
It is also possible to move the cylinder 51 by forming a male screw at the tip thereof and forming a female screw inside the cylinder 51 that engages with the male screw.

In the above embodiment, the link mechanism is operated in a two-dimensional manner using a connecting rod and a connecting lever body, but it is also possible to configure the link mechanism three-dimensionally, and by doing so, , it becomes possible to reduce the installation volume.

Further, in the above embodiment, the front handle and the rear handle are arranged coaxially, but the required thickness of the door can be reduced by shifting their positions and arranging the front handle and the rear handle at different positions. is also possible.

Furthermore, in the above embodiment, the connecting rods 40, 4
1 is used to operate each link mechanism, but it is also possible to omit the connecting rods 40 and 41 and directly drive the connecting lever body with the front handle part and the rear handle part. Depending on the case, it is also possible to make the front handle part and the rear handle part rotary and directly drive the rear clasp and front clasp, respectively.By doing this, the thickness of the door can be adjusted. It is also possible to make it thinner.

〔effect〕

Since the present invention is constructed as described above, the door has a double-sided opening/closing structure and can only be opened when the door is pulled. Therefore, since there is no need to push the door when opening or closing the door, it is possible to prevent accidents such as collisions between the door and a person when opening the door.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a door opening/closing lock structure according to one embodiment of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a plan view showing a door opening/closing lock structure according to an embodiment of the present invention. FIG. 4 is a partial plan view of a door opening/closing lock structure, and FIG. 4 is a plan view of a conventional double-sided opening/closing door. Explanation of symbols, 15: Door opening/closing lock structure, 1
6: Wall (fixed body), 17: Front clasp receiving part, 1
8: Rear door holder, 19: Front clasp, 20: Rear clasp, 22: Front handle, 23: Rear handle, 2
4: Front clasp in/out link mechanism, 25: Rear clasp in/out link mechanism, 33: Door closing surface, 36: Connection lever body, 39: Connection lever body, 40: Connection rod, 41: Connection rod.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A lock structure for a double-sided opening/closing door, in which a front clasp receiving part and a rear clasp are provided on opposite sides of a fixed body that forms the frame of the door to be opened and closed. The receiving portion engages with the front clasp receiving portion and the rear clasp receiving portion, respectively, and the portions of the tip portion that do not come into contact with the front clasp receiving portion and the rear clasp receiving portion form sliding surfaces, respectively. , a front clasp and a rear clasp that are pressed in a protruding state from the door closing surface of the door body and can be freely moved in and out, and a front handle part and a rear handle part of the door provided at the front and rear parts of the door body, respectively. , a door comprising a front clasp in/out link mechanism that connects the front clasp and the rear handle, and a rear clasp in/out link mechanism that connects the rear clasp and the front handle. Open/close lock structure. (2) The front clasp in/out link mechanism has a connecting lever body that moves in and out from the front of the front clasp, and a connecting rod that has one end connected to the connecting lever body and the other end connected to the rear handle part, Claims for registration of a utility model in which the rear clasp in/out link mechanism has a connecting lever body for moving the rear clasp in and out, and a connecting rod having one end connected to the connecting lever body and the other end connected to the front handle part. The door opening/closing lock structure described in item 1.