JP2009299351A - Door guard device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door guard device which does not interfere with coming and going of persons by automatically protruding an engaging pin when used, and contributes to better appearance of an entrance. <P>SOLUTION: According to the structure of the door guard device, the engaging pin 5 is arranged so as to be protrudable to/withdrawable from the inside of the door stop F1 of a door frame F, and an operating button 8 is set so as to protrude from a door stop surface F2. Herein the door guard device comprises a protruding/withdrawing mechanism which sets the engaging pin 5 in a protruding state in which an engaging arm 2 can hook on the same upon squeezing of the operating button 8 into a closed door D, and shifts the engaging pin 5 from the protruding state to a withdrawing state due to reset of the operating button 8 upon opening of the door D. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a door guard device that can lock a door such as a door in a half-open state, and in particular, by protruding when a locking pin is used, the door can be prevented from getting in the way when entering and exiting. It is related with the door guard apparatus which can improve appearance of.

2. Description of the Related Art Conventionally, a door guard device is installed as a security chain for crime prevention separately from a cylinder lock attached to a door body for crime prevention such as a front door.
For example, as shown in FIG. 14, the door guard device includes a locking arm 2 that is swingably attached to the inside of the front end portion of the door D, and a sliding groove of the locking arm 2 that is fixed to the door frame F side. 3 is provided with a locking pin 5 that is slidably hooked by a head.
When the door D is opened with the locking pin 5 inserted into the slide groove 3 of the locking arm 2, the door D can be opened only within the range in which the locking pin 5 moves through the slide groove 3. It can be locked in a half-open state.

  However, in the above conventional door guard device, since the locking pin 5 protrudes from the door frame F to the inside thereof, there is a problem that when a person enters or exits, it hits clothes or a body, or the appearance of the entrance is impaired. .

  In view of the above-described problems of the conventional door guard device, the present invention automatically protrudes when using a locking pin so that it does not get in the way when entering and exiting and improves the appearance of the entrance. It is an object of the present invention to provide a door guard device that can be used.

  In order to achieve the above object, a door guard device according to the present invention attaches a locking arm to a door in a swingable manner, and slidably latches a slide groove of the locking arm on a locking pin provided on the door frame. In the door guard device, the locking pin is provided so as to be able to protrude inward from the door stop of the door frame, and an operation button protruding from the door contact surface is provided, and the lock pin is pushed by being pushed into the closed door. The projecting state in which the locking arm is latched is provided, and a retracting mechanism is provided in which the operating button is returned by opening the door to move the locking pin from the protruding state to the retracted state.

  In this case, the lock mechanism is pivotally supported so as to move in and out by swinging, the slide member that engages with the lock pin and moves up and down to move the lock pin up and down, and the slide member And a button slider that moves the slide member up and down by moving together with the operation button.

  Moreover, the spring member which contact | abuts to the closed door can be provided in the front-end | tip of an action | operation button.

  In addition, a groove is formed on the pedestal of the locking arm, and a pedestal rail is slidably inserted into the dovetail groove, and the pedestal can be moved up and down within a predetermined range via the pedestal rail to the door. Can be attached.

  Further, the pedestal and the pedestal rail can be attracted by magnetic force.

  Further, only the operation button can be exposed on the door contact surface of the door frame when the door is opened.

  According to the door guard device of the present invention, in the door guard device, the locking arm is swingably attached to the door, and the sliding groove of the locking arm is slidably hooked on the locking pin provided on the door frame. The locking pin is provided so that it can protrude and retract from the door stop of the door frame, and an operation button that protrudes from the door contact surface is provided. When the operation button is pushed into the closed door, the locking pin is hooked by the locking arm. A lock-out mechanism is provided to move the lock pin from the protruded state to the retracted state by opening the door and opening the door. Can be automatically withdrawn and with the door that locks the locking arm closed, the door can be automatically extended. Together so as not to interfere when, it is possible to improve the entrance appearance.

  Further, the locking mechanism is pivotally supported so as to protrude and retract by swinging, a slide member that engages with the locking pin and moves up and down to move the locking pin in and out, and the slide member. In addition, by providing a button slider that moves the slide member up and down by moving together with the operation button, the locking pin is configured by opening and closing the door while configuring the retracting mechanism in a thin and compact size that can be inserted into the door. Can be infested automatically.

  In addition, by providing a spring member that contacts the closed door at the tip of the activation button, it absorbs errors due to dimensional differences and mounting errors of doors and door frames, changes in mounting position due to secular changes, etc. In addition to enabling stable operation, it is possible to prevent the device from being damaged by accidentally applying a large load to the operation button.

  In addition, a groove is formed on the pedestal of the locking arm, and a pedestal rail is slidably inserted into the dovetail groove, and the pedestal can be moved up and down within a predetermined range via the pedestal rail to the door. By attaching, even when the door moves up and down due to an earthquake, the locking arm follows and moves, so that the door guard device can be prevented from being broken without applying a load to the door guard device.

  Also, by attracting the pedestal and the pedestal rail with a magnetic force, the pedestal and the pedestal rail can be temporarily fixed, and the vertical position of the locking arm can be easily finely adjusted. Corresponding to the deformation of the frame by automatically adjusting the position of the locking arm, it is possible to prevent the door from being hindered.

  In addition, when only the operation button is exposed on the door contact surface of the door frame when the door is opened, it is possible to prevent further obstruction when entering and exiting and to improve the appearance of the entrance.

  Embodiments of the door guard device of the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of the door guard device of the present invention.
For example, as shown in FIG. 14, this door guard device includes a locking arm 2 that is swingably attached via a pedestal 1 inside a front end portion of a door D, and is fixed to the door frame F side. A large-diameter head 4 is latched in the two slide grooves 3 and a latch pin 5 is slidably latched.
As shown in FIG. 1, the door guard device is provided with the locking pin 5 so as to be able to protrude and retract inward from the door stop F1 of the door frame F, and is provided with an operation button 8 protruding from the door contact surface F2. When the operating button 8 is pushed into the closed door D, the locking pin 5 is brought into a projecting state in which the locking arm 2 is latched, and when the door D is opened, the operating button 8 is returned and the locking pin 5 is moved. A retracting mechanism is provided to change from the protruding state to the retracted state.

As shown in FIG. 6, the locking arm 2 is made of a U-shaped metal rod having a slide groove 3 at the center, and a pair of swing shafts 21 pivotally supported by the base 1 are provided at the base thereof. It protrudes integrally on the outside.
The pedestal 1 of the locking arm 2 has upper and lower grooves 11 and a pedestal rail 12 that is slidably inserted into the dovetail groove 11. 1 is attached to the door D so as to be movable up and down within a predetermined range.
The movement range of the pedestal 1 is regulated by a long hole 13 provided in the pedestal rail 12 and a screw 14 that is screwed into the pedestal 1 and is inserted into the long hole 13.
Further, the pedestal 1 and the pedestal rail 12 are attracted by the magnetic force of the magnet 15 to temporarily fix the pedestal 1 and the pedestal rail 12 so that the vertical position of the locking arm 2 can be finely adjusted.

  On the other hand, as shown in FIG. 2 to FIG. 3, in the present embodiment, the raising / lowering mechanism engages with the locking pin 5 that is pivoted so as to appear and disappear by swinging, and moves up and down. Thus, a slide member 6 that makes the locking pin 5 appear and disappears, and a button slider 7 that engages with the slide member 6 and moves the slide member 6 up and down by moving together with the operation button 8 are provided.

The locking pin 5 is pivotally supported by a head pin 51 on a support piece 91 of a receiving seat 9 (see FIG. 8) attached to the door frame F, swings up and down and enters a retracted state at an upright position. Swings from the side and protrudes at the sideways position.
As shown in detail in FIG. 7A, a cam projection 52 is provided at a position eccentric from the head pin 51, and the cam projection 52 is a cam of a slide member 6 to be described later. The lock pin 5 is swung between the retracted state and the protruded state by being inserted into the groove 63 and moving the slide member 6 up and down.
The locking pin 5 protrudes in a direction orthogonal to the operation button 8 through the slit 92 of the seat 9.

The slide member 6 is disposed between the pair of support pieces 91 of the seat 9 so as to be slidable up and down while being urged upward by the slide spring 61.
The slide member 6 has a plate shape, and as shown in detail in FIG. 9, the lower portion is formed in a box shape as a spacer that slides between the support pieces 91.
A guide groove 62 into which the head pin 51 is slidably inserted and a cam groove 63 formed on the side of the guide groove 62 and into which the cam projection 52 of the locking pin 5 is inserted, are formed on the slide member 6. Is provided.
Also, a lower guide groove 64 in which a slider case 71 of a button slider 7 to be described later is slidably fitted as a guide is provided at the lower portion of the slide member 6, and a button slider to be described later is provided at the bottom of the lower guide groove 64. 7 is provided with a bottom wall 65 for moving the slide member 6 up and down.

As shown in detail in FIG. 10, the button slider 7 is slidably accommodated in an outer cylindrical slider case 71, and the slider case 71 is penetrated and fixed to the support piece 91 of the receiving seat 9, so that the door It moves in the opening / closing direction of D.
The button slider 7 is screwed to the operation button 8 so as to operate integrally. The button slider 7 is moved together with the operation button 8 by the operation spring 72 inserted in the slider case 71. It is biased in the protruding direction.
A triangular cam 73 is integrally provided at the lower part of the button slider 7.
When the button slider 7 is pushed by the operation button 8, the triangular cam 73 pushes down the slide member 6 against the slide spring 61 by the slope provided on the slide member 6 side pushing down the bottom wall 65.

When the operation button 8 is pushed into the closed door D, the button slider 7 is pushed in. When the door D is opened, the operation button 8 is returned to the original position together with the button slider 7 by the operation spring 72.
As shown in detail in FIG. 12, a spring member 81 that contacts the closed door D is provided at the tip of the operation button 8 so as to protrude from the tip of the operation button 8. Absorbing errors due to dimensional differences and mounting errors of the door frame F, changes in mounting position due to secular changes, etc., so that the operation of the apparatus can be performed stably, and the operation button 8 is erroneously subjected to a large load. This prevents the device from being damaged.
The spring member 81 is fixed by press-fitting only at the root portion to the tapered hole 82 of the operation button 8, and the spring member 81 can swing up and down and right and left except for this fixed portion.
In this embodiment, the operation button 8 and the button slider 7 are screwed. However, the operation button 8 and the button slider 7 can be integrally formed from the beginning.

As shown in FIG. 13, the retracting mechanism configured as described above is attached to the door stop F <b> 1 of the door frame F with the back cover 93 attached.
In this case, a square hole F4 is provided on the inner surface of the door stop F1 of the door frame F, and a round hole F3 for the operation button is provided on the door stop surface F2 of the door stop F1.
Then, the retracting mechanism with the operating button 8 removed is inserted from the square hole F4, the seat 9 is fixed with the screw 94, and the operating button 8 is inserted through the round hole F3 and fixed to the button slider 7 with the screw 83. .
In addition, even if this infestation mechanism is attached to the door stop F1 upside down, it can be used similarly.

Next, the operation of the retracting mechanism of this embodiment will be described.
When the door D is opened, as shown in FIG. 1B, FIG. 2 and FIG. 4, since the operation button 8 and the button slider 7 are not pushed in, the slide member 6 is pushed upward by the slide spring 61. The locking pin 5 is in a retracted state in which the locking pin 5 swings upward by the action of the cam groove 63 and the cam protrusion 52.

  On the other hand, when the door D is closed, as shown in FIGS. 1A, 3 and 5, the operation button 8 and the button slider 7 are pushed in, and the slide member 6 is pushed down by the triangular cam 73 of the button slider 7, Due to the action of the cam groove 63 and the cam protrusion 52, the locking pin 5 swings downward and enters a protruding state.

  Thus, the door guard device of the present embodiment attaches the locking arm 2 to the door D so as to be swingable, and allows the slide groove 3 of the locking arm 2 to slide on the locking pin 5 provided on the door frame F. In the door guard device to be latched, the locking pin 5 is provided so as to be able to protrude inward and outward from the door contact F1 of the door frame F, and an operation button 8 protruding from the door contact surface F2 is provided, and the door D closed by the operation button 8 Is pushed into the protruding state in which the locking arm 2 is hooked and when the door D is opened, the operation button 8 is restored to move the locking pin 5 from the protruding state to the retracted state. Since the retracting mechanism is provided, when the door D is opened and closed, the locking pin 5 is automatically retracted and the door D that locks the locking arm 2 is closed. In can automatically protrude, thereby, as well as of the way during out, it is possible to improve the entrance appearance.

  In this case, the lock mechanism 5 is pivotally supported so as to move up and down by swinging, and the slide member 6 is engaged with the lock pin 5 and moved up and down to move the lock pin 5 up and down. By providing a button slider 7 that engages with the slide member 6 and moves together with the operation button 8 to move the slide member 6 up and down, the projecting mechanism can be inserted into the door stop F1 in a thin and compact size. While being configured, the locking pin 5 can be made to appear and disappear automatically by opening and closing the door D.

  Further, by providing a spring member 81 that contacts the closed door D at the tip of the operation button 8, it is possible to absorb errors due to dimensional differences and mounting errors of the door D and door frame F, and changes in mounting position due to secular change. Thus, the operation of the apparatus can be stably performed, and the apparatus can be prevented from being damaged by erroneously applying a large load to the operation button 8.

  In addition, a groove 11 is formed on the pedestal 1 of the locking arm 2 in the vertical direction, and a pedestal rail 12 that is slidably inserted into the dovetail groove 11 is provided, and the pedestal 1 is placed within a predetermined range via the pedestal rail 12. By attaching to the door D so that it can be moved up and down, even if the door D moves up and down due to an earthquake, the locking arm 2 follows and moves so that the door guard device is not overloaded and a failure of the door guard device is prevented. can do.

Further, by adsorbing the pedestal 1 and the pedestal rail 12 with magnetic force, the pedestal 1 and the pedestal rail 12 can be temporarily fixed, and fine adjustment of the vertical position of the locking arm 2 can be easily performed.
Further, it is possible to prevent the door D from being hindered by opening and closing the door D by automatically adjusting the position of the locking arm 2 in response to deformation of the door D or door frame F due to secular change or earthquake. it can.

  In addition, when only the operation button 8 is exposed on the door contact surface F2 of the door frame F when the door D is opened, it is possible to prevent the door from getting in the way and to improve the appearance of the entrance. it can.

  As mentioned above, although the door guard apparatus of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, The structure is suitably changed in the range which does not deviate from the meaning. be able to.

  The door guard device of the present invention has a characteristic that it automatically protrudes when using the locking pin so that it does not get in the way when entering and exiting and the appearance of the entrance is improved. It can be used widely and suitably as an easy-to-use high-quality door guard device.

One Example of the door guard apparatus of this invention is shown, (a) is a top view when a door is closed, (b) is a top view when a door is open | released. The intrusion mechanism of the door guard device is shown, (a) is a front view when the door is opened, and (b) is a side view thereof. The raising / lowering mechanism of the door guard apparatus is shown, (a) is a front view when the door is closed, and (b) is a side view thereof. The intrusion mechanism equipped with the back cover is shown, (a) is a front view when the door is opened, and (b) is a side view of the same. The intrusion mechanism equipped with the back cover is shown, (a) is a front view when the door is closed, and (b) is a side view thereof. The locking arm and the pedestal are shown, (a) is an exploded plan view thereof, (b) is an exploded side view thereof, (c) is an assembled side view thereof, and (d) is an assembled plan view thereof. (A) is a three-view drawing of the locking pin, (b) is a two-view drawing of the head pin, (c) is a front view of the slide spring, (d) is a front view of the operating spring, and (e) is a front view of the spring member. FIG. It is a 4th page figure of a seat. It is a 4th page figure of a slide member. A button slider is shown, (a) is the 4th figure, (b) is a 4th figure which shows the state inserted in the slider case. (A) is a 4th view of a back cover, (b) is a 4th view of a slider case. The operation button is shown, (a) is a three-side view thereof, (b) is an assembly view for mounting a spring member. It is an assembly drawing which shows the procedure of mounting | wearing the door mechanism with the raising / lowering mechanism of a present Example. The door guard device is shown attached, (a) is a front view showing the locking arm, (b) is a plan view showing a state where the locking pin is hooked on the locking arm, and (c) is the locking pin. The top view which opened the door in the state latched by the stop arm, (d) is a top view which shows the state which unlocked the door guard apparatus and extracted the locking pin from the locking arm.

Explanation of symbols

D door F door frame F1 door contact F2 door contact surface 1 pedestal 11 dovetail groove 12 pedestal rail 13 long hole 14 screw 15 magnet 2 locking arm 21 swinging shaft 3 slide groove 4 head 5 locking pin 51 head pin 52 cam projection 6 Slide member 61 Slide spring 62 Guide groove 63 Cam groove 64 Lower guide groove 65 Bottom wall 7 Button slider 71 Slider case 72 Actuating spring 73 Triangular cam 8 Actuating button 81 Spring member 82 Taper hole 83 Screw 9 Receiving seat 91 Supporting piece 92 Slit 93 Back cover 94 Screw

Claims (6)

  In a door guard device that slidably attaches a locking arm to a door and slidably engages a sliding groove of the locking arm with a locking pin provided in the door frame, the locking pin is brought into contact with the door frame door An operating button that protrudes from the door contact surface is provided, and the operating pin is pushed into the closed door so that the locking pin is in a protruding state in which the locking arm is locked, and the door is A door guard device comprising an intrusion mechanism for returning the operation button to open the locking pin from the protruding state to the retracted state by opening.   A retracting mechanism includes a locking pin pivotally supported so as to appear and retract by swinging, a slide member that engages with the locking pin and moves up and down, and engages with the slide member. The door guard device according to claim 1, further comprising a button slider that moves the slide member up and down by moving together with the operation button.   The door guard device according to claim 1, wherein a spring member that abuts on the closed door is provided at a tip of the operation button.   A groove is formed on the pedestal of the locking arm, and a pedestal rail that is slidably inserted into the dovetail groove is provided, and the pedestal is attached to the door so that the pedestal can move up and down within a predetermined range via the pedestal rail The door guard device according to claim 1, 2 or 3.   5. The door guard device according to claim 4, wherein the pedestal and the pedestal rail are attracted by magnetic force.   6. The door guard device according to claim 1, wherein only the operation button is exposed on a door contact surface of the door frame when the door is opened.

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