JPH07269212A - Removable device - Google Patents

Abstract

PURPOSE:To engage a removable device simply only by inserting the front ends of a chain and other connectors into the groove section of a device body while also releasing the state of engagement from the outdoor side at the time of an emergency. CONSTITUTION:A groove section 13, in which the front end section 21 of a connector 2 is inserted, is formed to a frame body 11 while an engaging lever 4 energized in the direction projected into the groove section 13 is provided. The engaging lever 4 is guided movably in the longitudinal direction in the frame body while the revolution of the engaging lever 4 in the periphery of an axis is constrained, and an inclined plane 46 pushing and guiding the engaging lever 4 in the direction of sinking when the front end section 41 of the engaging lever 4 is engaged by insertion into an engaging hole 23 formed at the front end section 21 of the connector 2 is shaped at the front end section 41 of the engaging lever 4. An electromagnetic actuator 6 is mounted into the frame body for sinking the engaging lever 4 in fixed length.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain whose base end is attached to a door or a sliding door or a fixing member in order to limit the opening amount of the door or the sliding door to a half-opened state or to tighten the inside of the door or the sliding door. The present invention relates to an improvement of an attachment / detachment device that selectively attaches a connecting rod and other tip portions of a connecting body.

[0002]

2. Description of the Related Art This type of attachment / detachment device is used in combination with a chain or other connecting member, and the connecting member is operated only from the inside of the room to limit the opening amount of the door or the like to a half-opened state, or inside the door or the like. As a conventional device for tightening, a so-called door chain device used for confirming a visitor or delivering a mail, or an inner locking lock for sliding and locking a connecting rod, that is, a locking piece is typical. It can be mentioned as a thing.

However, according to these conventional internal tightening type devices, since the hanging operation is performed only from the inside of the room, the door or door can be opened from the outside of the room in case of emergency such as when the person in the room collapses due to a sudden illness. There is a problem that it cannot be opened, and there is also a problem that the operation of hooking and unhooking the metal fitting (attachment / detachment device) having the long hole is considerably troublesome in the door chain.

Further, as a device for attaching and detaching a door chain, as in the invention disclosed in, for example, Japanese Patent Laid-Open No. 63-151778, a locking rod for engaging the tip of the chain is slid by a solenoid. However, according to this, even when the chain is engaged, there is a trouble that it cannot be operated unless the power is turned on by turning on the switch one by one.

[0005]

The attaching / detaching device of the present invention makes it possible to easily attach the tip end of the chain or other connecting body simply by inserting the groove portion of the device body.
It was proposed for the purpose of enabling the locked state to be released from the outdoor side in an emergency.

[0006]

In order to achieve the above object, the invention according to claim 1 is a hollow frame body having a groove portion into which the front end portion of the connecting body having the engagement hole opened is inserted. In this frame, the tip of the engaging rod is formed in the tip of the engaging rod, which is biased in the direction of engaging the groove and engages with the groove, and which is provided with a detent around the axis. And an electromagnetic actuator for retracting the tip of the locking rod from the groove.

According to the second aspect of the invention, a groove for inserting the tip of the connecting body is provided in the hollow frame body fixed to the fixing member or the door or the sliding door, and the insertion direction of the connecting body is set. A locking rod is provided that is biased in a direction projecting into the groove in a direction that forms a substantially right angle, and the locking rod guides slidably in the longitudinal direction in the frame body and cannot rotate around the axis. And when the tip of the locking rod is engaged with the engaging hole provided at the tip of the connecting body, the connecting rod and the engaging rod are connected to each other. An electromagnetic actuator is provided to retract the locking rod by a predetermined length in order to form an inclined surface that pushes and guides the locking rod in the retracting direction by the wedge action generated by the engagement, and on the other hand, in order to disengage the tip of the connecting body. Is characterized by.

[0008]

In the attachment / detachment device of the present invention, in the normal state when not engaged, the tip portion of the locking rod projects until it reaches the above-mentioned groove portion, and the inclined surface thereof faces outward in the groove portion (Fig. 2).

In order to attach the connecting body to the attachment / detachment device, when the tip end of the chain or other connecting body is inserted into the groove portion thereof with the fingers in the direction of arrow A in FIG. 2, the connecting body is attached to the inclined surface of the locking rod. Abutting against, and by the wedge action due to the further entry of the connecting body,
The locking rod is pushed in the groove (inward) from the groove, and the distal end of the connecting body is allowed to enter the groove (see FIG. 4).

Here, the engaging hole at the tip of the connecting body allows the engaging rod to return to its original position by the urging force of the compression spring or the like, and the engaging hole of the connecting body and the engaging rod are fitted together. The coupling body and the locking rod are engaged with each other.

Due to this engagement state, the opening of the door or the sliding door is limited to the half-opened state, or the door or the sliding door is closed in the internally tightened state.

In an emergency, the switch is operated by operating the switch outside the door or the sliding door, that is, the card reader on the outside, the numeric keypad, a personal identification code input panel, or a hidden switch outdoors.

By the operation of this electromagnetic actuator, the locking rod is retracted by a predetermined length at a right angle to the insertion direction of the connecting body, and the tip of the locking rod is completely retracted from the groove (see FIG. 5).

In this state, when the door or the sliding door is opened from the outside of the room, the chain and other connecting members are pulled toward the base end side and disengaged from the locking rod, as shown by the arrow B in FIG. The locking rod is released from the engagement with the connecting body. Here, the door etc. can be freely opened.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The attachment / detachment device of the present invention will be described below in detail with reference to the embodiments shown in the drawings. 1 to 5 show a first embodiment, FIG. 6 shows a second embodiment, and FIG. 7 shows a third embodiment.

Each member of the present invention is a metal material such as stainless steel, brass, aluminum or a strong synthetic resin like the chain, the connecting rod and the other connecting body 2 combined with the device of the present invention except the locking rod. It is usually made from materials.

However, when the locking rod is manufactured as an integral structure with the plunger of the electromagnetic actuator as will be described later, it is manufactured from a ferromagnetic material such as iron.

In the case where the locking rod is separate from the plunger of the electromagnetic actuator and the structure is such that it is later coupled to the plunger, the material of the locking rod need not be the above-mentioned ferromagnetic material. Is.

FIG. 1 showing the first embodiment is a front view of the door D or the sliding door as viewed from the inside of the room. In the figure, reference numeral F is a fixing member such as a door frame, 1 is an entire attachment / detachment device fixed to the fixing member F with a screw 71, 2 is a chain that functions as a so-called door chain, and 21 is a member forming a tip portion of the chain 2. Pieces 3 are fixed to the door D with screws 72, and the base end side 2 of the chain 2
Reference numeral 31 is a mounting piece to which 2 is mounted, 31 is a latching projection piece integrally provided at the bottom of the mounting piece 3 when the chain is not used, 81 is a door handle, 82 is a thumb turn, and 83 is a seat plate.

As shown in FIG. 2, the hollow frame body 11 of the entire apparatus 1 is formed in an arbitrary shape such as a cylindrical shape or a rectangular tube shape.
The flange portion 12 at the bottom is fixed to the fixing member F or the like with a screw 71.

At the top of the hollow frame 11 is a chain 2
The groove portion 13 through which the engaging piece forming the front end portion 21 is inserted is provided.

The depth of the groove portion 13 is preferably about half of the length of the engaging piece 21 in order to facilitate the operation of inserting the engaging piece 21 with fingers.

The attachment / detachment device 1 in FIG. 1 is illustrated as being attached to the fixing member F such that the flange portion 12 (see FIG. 2) is parallel to the door or the sliding door D.
This is so mounted when the one with the reference D is a sliding door, and when the one with the reference D is a revolving door, depending on whether the door D opens inside or outside, the groove 16 The length direction of the chain shall be set so as to be the pulling direction of the chain 2.

As shown in FIGS. 2 and 3, the engaging piece 21 which is the tip of the chain 2 is provided with an engaging hole 23 into which a later-described engaging rod 4 is detachably inserted. The engaging hole 23 may have a closed shape such as a circle or an open shape such as a notch in the front external shape.

Further, the frame 11 has the engaging piece 2 of the connecting body 2.
A locking rod 4 is biased by a compression coil spring 5 or the like in a direction projecting into the groove 13 in a direction substantially perpendicular to the direction in which 1 is inserted.

The locking rod 4 is guided so as to be slidable in the lengthwise direction within the frame 11, and is constrained so as not to be rotatable about its axis by adopting a structure described later, for example.

The locking rod 4 in the illustrated example has a circular cross section,
An intermediate trunk portion 42 having a smaller diameter than the tip portion 41, which is a large diameter portion, is continuously provided below the tip portion 41. And this intermediate body part 4
2 is an annular bush 45 disposed inside the frame body 11.
It is slidably fitted with.

A long groove 44 is formed on the outer peripheral surface of the intermediate body 42 along the generatrix thereof, and a pin 47 planted on the inner peripheral surface of the bush 45 slides on the long groove 44. Engageable.

Further, the small-diameter portion 43 integrally provided under the intermediate body portion 42 is fitted and inserted into the coil cylinder of the electromagnetic actuator 6 such as a solenoid built in the frame 11.

With the above-described structure, the locking rod 41 is guided in the frame 11 so as to be movable in the lengthwise direction thereof, and is restrained from rotating about its axis.

Further, at the tip portion 41 (large diameter portion) of the locking rod 4, the tip portion 41 of the locking rod 4 is fitted to the engaging hole 23 provided at the tip portion 21 of the chain or other connecting body 2. An inclined surface 46 is formed which guides the locking rod 4 in the retracted direction by a wedge action when the lock lever is engaged.

As the urging force for urging the locking rod 4 in the direction of projecting it into the groove portion 13, any means such as spring elasticity or magnetic force may be used.

In the illustrated example, the compression coil spring 5 is wound around the locking rod 4, and both ends thereof are brought into contact with the large-diameter portion 41 of the locking rod 4 and the bush 45, respectively. A biasing force is applied to the rod 4.

Further, an electromagnetic actuator 6 such as a solenoid is provided in the frame body 11 in order to move the tip end portion 41 of the locking rod into the frame body 11 and move it in the direction of retreating from the groove portion 13. As described above, in the illustrated embodiment, the small diameter portion 43 at the lower end of the locking rod also serves as the solenoid plunger.

Since the attaching / detaching device according to the embodiment of the present invention is constructed as described above, the electromagnetic actuator 6
In a normal state in which no electricity is applied to the locking rod 4, the locking rod 4 is constantly urged by the elastic force of the compression spring 5 in a direction to be engaged in the groove portion 13.

Therefore, when the engaging piece 21 is pushed into the groove portion 13, the tip end portion 41 retreats from the groove portion 13 due to the wedge action, and when the tip end portion 41 and the engagement hole 23 are aligned, they are engaged by the urging force. The engaging rod is inserted into the attachment hole 23, and thus the engagement rod and the engagement piece 21 are automatically engaged.

In the so-called locked state in which the tip portion 41 and the engaging piece 21 are engaged with each other and the electromagnetic actuator 6 is not energized, the former locked state of the latter is not kept stable. Needless to say.

As described above, when the electromagnetic actuator is energized and the tip portion 41 of the locking rod is retracted so as to be pulled in from the groove portion 13, the engaging piece 21 is easily released from the tip portion 41.

Next, the second embodiment of FIG. 6 and the third embodiment of FIG. 7 will be described. The second and third embodiments differ from the first embodiment in that a rod-shaped connecting rod is used as the connecting body 2 instead of the chain of the first embodiment.

The connecting rod 2 in both embodiments is slidable in the lateral direction while being supported by a mounting piece 3 fixed by a screw 72 on the inside of a sliding door D which is opened and closed in the direction of arrow C. The part 21 is attached to the attachment / detachment device 1 as needed, as in the first embodiment, and the base end 22 is provided with a stopper 24.

Reference numeral 25 is an operating knob fixed to the connecting rod 2 and slides in the elongated hole 32 in front of the mounting piece 3.

The connecting rod 2 of the second embodiment is sufficiently longer than that of the third embodiment, and allows the sliding door D to be opened in the half-open state when it is attached to the attachment / detachment device 1.

On the other hand, the connecting rod 2 of the third embodiment acts as a locking piece and exhibits an internal tightening function. In the state of being attached to the attaching / detaching device 1, the sliding door D can be left half closed and half opened. Can not.

In the first to third embodiments,
The detaching device 1 is fixed to the fixing member F side such as a door frame,
An example in which the connecting body 2 is attached to the door or the sliding door D side is shown.
It goes without saying that the attachment / detachment device 1 may be mounted on the door or the sliding door D side and the connector 2 may be mounted on the fixed member F side. However, considering the electrical wiring, it may be easier to process the attachment / detachment device 1 if it is fixed to the fixing member F side.

An operating device (not shown) such as a card reader, an input panel or a manual switch for operating the closing / opening of the circuit of the electromagnetic actuator 6 from the outside in an emergency can be installed at any place outside the management room. It may be provided in a place.

Needless to say, a manual switch or any other operating means may be provided on the indoor side in order to release the connected body 2 from the engaged state in normal times.

In the illustrated embodiment, the electromagnetic actuator for retracting the locking rod into the frame is a solenoid, and the small diameter portion 43 forming a part of the locking rod is used as a solenoid plunger. Other types of electromagnetic actuators can be used to perform similar functions.

For example, a rack is provided on the outer peripheral surface of the locking rod along the generatrix thereof, while a rotary solenoid having a pinion engaged with the rack at the tip of the output shaft has its output shaft crossing the locking rod. When the output shaft of the rotary solenoid is rotated, the rotation is transmitted to the locking rod through the engagement of the pinion and the rack, and this is driven in the axial direction and in the direction of retracting from the groove. May be (not shown).

Further, instead of the rotary solenoid,
A motor such as a micromotor having a pinion attached to the output shaft may be used (not shown).

[0050]

According to the attachment / detachment device of the present invention described above, the tip end of the chain or other connecting body is simply inserted into the groove of the frame body, and the attachment is easily performed with one touch without operating the electromagnetic actuator. Can also,
In an emergency, the connection state of the connecting body can be easily released from the outside of the room.

[Brief description of drawings]

FIG. 1 is a front view showing a usage mode of a first embodiment of an attaching / detaching device of the present invention.

FIG. 2 is an enlarged partial vertical cross-sectional view showing a connection body non-engaged state of the attachment / detachment device and an enlarged partial front view showing the connection body.

FIG. 3 is an enlarged front view of a tip portion of the connected body.

FIG. 4 is an enlarged partial vertical cross-sectional view of the attachment / detachment device of the first embodiment in which the connecting body is engaged.

FIG. 5 is an enlarged partial vertical cross-sectional view showing a releasing process of the connected body.

FIG. 6 is a front view showing a usage mode of a second embodiment of the attachment / detachment device of the present invention.

FIG. 7 is a front view showing a usage mode of a third embodiment of the attaching / detaching device of the present invention.

[Explanation of symbols]

 D Door or Sliding Door F Fixing Member 1 Whole Attachment / Detachment Device 11 Frame Body 13 Groove Part 2 Connecting Body 21 Tip Part 22 Base End Side 23 Engagement Hole 4 Locking Rod 41 Tip Part 42 Intermediate Body Part 43 Small Engagement Part 44 Long Groove 45 Bush 46 Inclined surface 47 pin 5 Compression spring 6 Electromagnetic actuator

Claims (2)

[Claims] 1. A hollow frame body having a groove portion into which a tip portion of a connecting body having an engagement hole opened is inserted, and a direction in which a tip fitted into the engagement hole is engaged with the groove portion in the frame body. A locking rod that is urged by
An attachment / detachment device comprising: an inclined surface formed at the tip of the locking rod, and an electromagnetic actuator for retracting the tip of the locking rod from the groove. 2. A chain, connecting rod or other connecting body whose base end side is attached to the door or the sliding door or the fixing member in order to limit the opening amount of the door or the sliding door to a half-open state or to tighten the inside of the door or the sliding door. An attaching / detaching device for selectively attaching the tip of the connecting body to a fixing member or a hollow frame body fixed to a door or a sliding door is provided with a groove into which the tip of the connecting body is inserted. A locking rod is provided that is biased in a direction projecting into the groove in a direction substantially perpendicular to the direction, and the locking rod guides the frame slidably in the longitudinal direction and rotates around the axis. It is restrained so that it cannot move, and when the tip of the locking rod is engaged with the engaging hole provided at the tip of the connecting rod, the connecting rod and the locking rod are locked. The locking rod is pushed in the direction of immersion by the wedge action generated by the engagement with An attachment / detachment device, characterized in that an electromagnetic actuator is provided which forms an inclined surface for guiding and on the other hand, in order to separate the tip end of the connecting body, the locking rod is retracted by a predetermined length.