JP2007107197A - Auxiliary lock for door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auxiliary lock for a door superior in operability, having strong strength in a locking state, and having high crime preventive performance. <P>SOLUTION: This auxiliary lock 20 for the door has a base 21 fixedly arranged on the door frame 15 side and a lock arm 31 arranged on the base 21. The lock arm 32 is constituted so as to be freely movable between a locking position for checking opening of the door 10 by projecting on an opening-closing track of the door 10 and an unlocking position for allowing opening-closing operation of the door 10 by retreating from above the opening-closing track of the door 10. The lock arm 31 has a guide hole 34 for regulating reciprocating operation up to the locking position from the unlocking position. The base 21 has support bars 26 and 27 electrically continued with the guide hole 34, slidingly contacting with an inner wall surface of the guide hole 34 and supporting moving operation of the lock arm 31. An elastic member 40 for holding the lock arm 31 in the locking position is also arranged between the base 21 and the lock arm 31. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an auxiliary lock for a door which is installed on a door separately from a main lock and is used for ensuring a closed state of the door.

  In recent doors, an auxiliary lock has been installed in addition to the main lock to improve crime prevention. There are various forms employed for this type of auxiliary lock. For example, in Patent Document 1 below, after rotating the lock arm to a predetermined position so as to approach the door, the lock arm is slid laterally to engage the convex portion of the lock arm with the concave portion. The structure which locks a lock arm in a locking position by uneven | corrugated engagement is disclosed.

  Similarly to the auxiliary lock described in the following Patent Document 1, the following Patent Document 2 is locked by rotating the lock arm to a predetermined position and then sliding it up and down and engaging the lock arm with the recess. The structure which locks an arm in a locking position is disclosed.

US Pat. No. 5,489,129 US Patent No. 2,067,779 Japanese Utility Model Publication No. 29-7598

  However, since the auxiliary locks described in both of Patent Documents 1 and 2 above need to be slid after the lock arm is rotated, two operations, a rotation operation and a slide operation, are necessary. The operability was not good.

  On the other hand, there exist some which can lock a door by the sliding motion of a stopper like the auxiliary lock of the above-mentioned patent documents 3. However, since the auxiliary lock having such a configuration only slides the thin plug in a straight line parallel to the door, it is vulnerable to a pressing force applied from the outside, and is not possible from the viewpoint of improving crime prevention. It is enough.

  The present invention has been made in view of the existence of the above-mentioned problems, and its purpose is to provide excellent security for doors with excellent operability as compared with the prior art and having strong strength in a locked state. To provide a lock.

  The present invention will be described below. In addition, in order to make an understanding of this invention easy, the reference number of an accompanying drawing is attached in parenthesis writing, However, This invention is not limited to the form of illustration by it.

  The door auxiliary lock (20) according to the present invention has a base (21) fixedly installed on the door frame (15) side, and a lock arm (31) installed on the base (21). The locking arm (31) protrudes on the opening / closing track of the door (10) to prevent the opening of the door (10) and retracts from the opening / closing track of the door (10) to open / close the door (10). A door auxiliary lock (20) configured to be freely movable between an unlocking position and an unlocking position, wherein the lock arm (31) is a guide hole that defines a reciprocating movement operation from the unlocking position to the locking position. (34), and the base (21) is electrically connected to the guide hole (34), slidably contacts the inner wall surface of the guide hole (34), and supports the moving operation of the lock arm (31). Support bars (26, 27), and Serial base between (21) and said locking arm (31), characterized in that the resilient member (40) exerting a resilient force for holding the lock arm (31) in the locking position is provided.

  In the auxiliary lock for door (20) according to the present invention, the guide hole (34) includes a linear portion (34a) for linearly moving the lock arm (31) in a direction parallel to the door (10) from the locking position. And an arc part (34b) formed in an arc shape from one end of the linear part (34a) and rotating the lock arm (31) to the unlocked position, and the support bars (26, 27) The first support bar (26) which is in sliding contact with only the inner wall surface of the linear portion (34a) and serves as a rotation center when the lock arm (31) rotates, and the arc from the linear portion (34a). It can be comprised from the 2nd support bar (27) which slidably contacts the inner wall face of the guide hole (34) over a part (34b).

  That is, in the door auxiliary lock (20) according to the present invention, when the lock arm (31) is moved from the unlocked position to the locked position, the lock arm (40) is resisted against the elastic force of the elastic member (40). By pressing 31) in the direction of the locking position, first, the lock arm (31) rotates and moves along the shape of the arc hole of the arc portion (34b). Then, when the second support bar (27) is positioned from the arc portion (34b) to the linear portion (34a), the lock arm (31) is moved to the door by the elastic force of the elastic member (40). By linearly moving in a direction parallel to (10), the first support bar (26) abuts against the hole end on the other end side of the arc portion forming side of the linear portion (34a) and the first support bar (26a). The two support bars (27) are brought into contact with the inner wall surface of the linear portion (34a), so that the lock arm (31) is fixed in the locked position.

  On the other hand, when the lock arm (31) is moved from the locked position to the unlocked position, the lock arm (31) is pressed in a direction parallel to the door (40) against the elastic force of the elastic member (40). Accordingly, first, the lock arm (31) moves linearly along the straight hole shape of the straight portion (34a). Then, when the second support bar (27) is positioned at the end of the linear portion (34a) on the arc portion forming side, the lock arm (31) is moved by the elastic force of the elastic member (40). By rotating and moving along the arc hole shape of the arc portion (34b), the first support bar (26) is positioned at the intermediate portion of the linear portion (34a) and the lock arm (31) is rotated. The second support bar (27) abuts against the hole end of the arc portion (34b) on the other end side of the arc portion (34b) from the connection end side of the arc arm (34b) and becomes the center of movement. Fixing at the unlocked position will be realized.

  ADVANTAGE OF THE INVENTION According to this invention, the auxiliary | assistant lock for doors with the high crime prevention property which was excellent in operativity compared with the past, and was equipped with the strong intensity | strength in the locked state can be provided.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

  Drawing 1 is a figure which illustrates the installation state of the auxiliary lock for doors concerning this embodiment. For example, as shown in FIG. 1, the door auxiliary lock 20 according to the present embodiment can be installed inside the door 10 having the hinge structure 11, and serves to assist a main lock (not shown) installed in the door knob 12. Is responsible. And the auxiliary lock 20 for doors which concerns on this embodiment is an apparatus which has the base 21 fixedly installed in the door frame 15 side, and the lock arm 31 installed in this base 21 as main structural members. The lock arm 31 protrudes on the opening / closing track of the door 10 to prevent the door 10 from opening, and the locking arm 31 retracts from the opening / closing track of the door 10 to allow the door 10 to open / close. It is configured to be movable. The specific structure will be described in detail with reference to FIGS. 2A to 5.

  2A to 3 show the appearance of the door auxiliary lock according to the present embodiment, and FIGS. 4 and 5 show the internal structure of the door auxiliary lock according to the present embodiment.

  First, an outline view of the auxiliary lock for doors according to the present embodiment will be shown and its schematic configuration will be described. FIG. 2A is a top view of the door auxiliary lock according to the present embodiment, showing a state where the lock arm is set at the lock position. FIG. 2B is a front view of the door auxiliary lock according to the present embodiment in a state where the lock arm is set at the locking position, and FIG. 2C is the present embodiment in a state where the lock arm is set at the locking position. It is a right side view of the auxiliary lock for doors.

  Among the members constituting the door auxiliary lock 20 according to the present embodiment, the base 21 includes a fixing plate portion 24 having a screw hole 23 for fixing to the door frame 15 via the wood screw 22, and a lock arm described later. And a casing portion 25 that surrounds the moving path of the lock arm 31 and constitutes a part of the outer shell of the apparatus. In addition, the base 21 is a member that serves as a reference for securely fixing and installing the auxiliary lock 20 for the door, and must receive a force applied from the outside, and thus is configured by a member having a predetermined strength such as a metal material. There is a need to. In addition, about the place and the number of the screw holes 23 formed in the fixed plate part 24, in FIG. 2C, although two places are provided in the approximate center part and two places in a corner part, the shape of the door frame 15 and the auxiliary lock for doors are provided. It is possible to set arbitrarily according to the strength required for 20.

  On the other hand, the lock arm 31 includes a pressing portion 32 that comes into contact with the inner surface of the door 10 in a state where the lock arm 31 is in a locked position, and a housing portion 33 that forms an outline of the lock arm 31. Since the housing portion 33 receives the operation pressure from the operator and receives the force in the opening direction applied from the door 10 side in cooperation with the base 21, the housing portion 33 is configured by a member having a predetermined strength such as a metal material. Has been.

  FIG. 3 is a view showing the door auxiliary lock 20 according to the present embodiment in a state where the lock arm 31 is retracted to the unlocking position. When the lock arm 31 is moved to the unlocking position, the door auxiliary lock 20 according to the present embodiment is completely retracted from the opening / closing path θ of the door 10, so that the opening / closing operation of the door 10 is permitted and smooth. The operation of the door 10 is realized. On the other hand, as shown in FIG. 2A, when the lock arm 31 is in the locked position, the lock arm 31 protrudes on the opening / closing track θ of the door 10, and thus the opening operation of the door 10 is completely restricted. become.

  Next, the internal structure of the auxiliary door lock 20 according to the present embodiment will be described in detail with reference to FIGS. 4 and 5. 4 is a cross-sectional top view showing the AA cross section in FIG. 2B, and FIG. 5 is a vertical right side view showing the BB cross section in FIG.

  First, the lock arm 31 includes guide holes 34 having the same shape in the center portion on the upper surface side and the center portion on the lower surface side of the housing portion 33. The guide hole 34 plays a role of regulating the reciprocating movement of the lock arm 31 from the unlocked position to the locked position. More specifically, the guide hole 34 is formed in an arc shape from one end of the linear portion 34a and a linear portion 34a for linearly moving the lock arm 31 in a direction parallel to the door 10 from the locked position. And an arc portion 34b that rotates and moves to the unlocking position.

  On the other hand, the base 21 is provided with two support bars 26 and 27 that are connected to the guide hole 34 of the lock arm 31 and that are in sliding contact with the inner wall surface of the guide hole 34 and support the movement of the lock arm 31. Yes. These two support bars are in sliding contact with only the inner wall surface of the linear portion 34a and serve as a rotation center when the lock arm 31 rotates and a guide hole extending from the linear portion 34a to the arc portion 34b. And a second support bar 27 slidably contacting the inner wall surface of 34.

  Further, an elastic member 40 that exerts an elastic force for holding the lock arm 31 in the locked position is installed between the base 21 and the lock arm 31. In the door auxiliary lock 20 according to the present embodiment, the above-described constituent member group, that is, the guide hole 34 composed of the linear portion 34 a and the arc portion 34 b, and the first support that conducts to the guide hole 34. The bar 26, the second support bar 27, and the elastic member 40 that exerts an elastic force between the base 21 and the lock arm 31 perform a harmonious cooperative operation, thereby being extremely excellent in operability. An auxiliary lock for doors having a strong security and a strong strength in the locked state has been realized.

  Then, operation | movement of the auxiliary lock 20 for doors which concerns on this embodiment which has the structure demonstrated above is demonstrated using FIG. FIG. 6 is a view for explaining the operation of the door auxiliary lock according to the present embodiment. In FIG. 6, (α) shows a state where the lock arm 31 is in the locked position. ) Shows a state in which the lock arm 31 is linearly moved in the direction parallel to the door from the locked position, and (γ) in FIG. 6 shows a state in which the lock arm 31 is in the unlocked position.

[Explanation of operation from locked position to unlocked position]
First, the case where the lock arm 31 is moved from the locked position to the unlocked position will be described. That is, in FIG. 6, it is assumed that the lock arm 31 operates in the state of (α) → (β) → (γ).

  When the lock arm 31 is moved from the locked position to the unlocked position, by pressing the lock arm 31 in a direction parallel to the door 10 against the elastic force of the elastic member 40 from the state (α) in FIG. First, the lock arm 31 moves linearly along the straight hole shape of the straight portion 34a.

  Then, when the second support bar 27 is positioned at the end of the linear portion 34a on the arc portion forming side (in the state (β) in FIG. 6), the elastic force of the elastic member 40 acts, and the lock arm 31 has the arc portion. It will rotate along the arc hole shape of 34b. At this time, the first support bar 26 is located in the middle portion of the linear portion 34a and becomes the center of the rotational movement of the lock arm 31, and the second support bar 27 is finally the linear portion 34a of the arc portion 34b. Since it comes into contact with the hole end on the other end side from the connection side, the lock arm 31 is fixed at the unlocked position (see the state (γ) in FIG. 6).

  In the operation from the locking position to the unlocking position described above, the operator performs only the operation of pressing the lock arm 31 in the direction parallel to the door 10. That is, since the operator can perform the unlocking operation of the door auxiliary lock 20 by only one operation of the slide operation, the door auxiliary lock 20 according to the present embodiment is compared with the prior art in the unlocking operation. It can be said that this is an auxiliary lock with significantly improved operability.

[Description of operation from unlocked position to locked position]
Next, the case where the lock arm 31 is moved from the unlocked position to the locked position will be described. That is, in FIG. 6, it is assumed that the lock arm 31 operates in the state of (γ) → (β) → (α).

  When the lock arm 31 is moved from the unlocked position to the locked position, by first pressing the lock arm 31 in the direction of the locked position against the elastic force of the elastic member 40 from the state (γ) in FIG. The lock arm 31 rotates and moves along the arc hole shape of the arc portion 34b.

  Next, when the second support bar 27 is positioned from the arc portion 34b to the straight portion 34a (state (β) in FIG. 6), the lock arm 31 is parallel to the door 10 by the elastic force of the elastic member 40 (see FIG. 6). 6 is a straight line movement in the right direction). At this time, the first support bar 26 comes into contact with the hole end on the side different from the arc portion forming side of the straight portion 34a, and the second support bar 27 comes into contact with the inner wall surface of the straight portion 34a. Therefore, the lock arm 31 is fixed at the locking position (see the state (α) in FIG. 6).

  Even in the operation from the unlocked position to the locked position described above, the operator performs only the turning operation of pressing the lock arm 31 in the direction of the locked position. That is, since the operator can perform the locking operation of the door auxiliary lock 20 by only one operation of the rotation operation, the door auxiliary lock 20 according to the present embodiment is also compared with the prior art in the locking operation. It can be said that this is an auxiliary lock with significantly improved operability.

  As mentioned above, although preferred embodiment of this invention was described, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the embodiment. For example, the auxiliary lock 20 for doors according to the present embodiment has been described by exemplifying the case where the auxiliary lock 20 for doors is installed at a position close to the door knob 12 inside the door 10, but the scope of application of the present invention is limited to such a form. It is not intended to be installed, and can be installed at any location on the door 10.

  Further, the guide hole 34 has been described by exemplifying a case where the guide hole 34 is configured by the linear portion 34a and the arc portion 34b formed in an arc shape from one end of the linear portion 34a. The range can be changed within a range that does not impair the movement, and can be determined according to the operation range, movement locus, surrounding constraint conditions, and the like of the lock arm 31.

  Further, the first support bar 26 and the second support bar 27 that are slidably connected to the inner wall surface of the guide hole 34 do not need to be one bar-like member, and the lock arm 31 can be smoothly moved. As long as the moving operation can be realized in cooperation with the guide hole 34, any form such as a hook-shaped bar or a protruding protrusion may be adopted.

  It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

It is a figure which illustrates the installation state of the auxiliary lock for doors concerning this embodiment. It is a top view of the auxiliary lock for doors concerning this embodiment, and shows the state where the lock arm is set in the lock position. It is a front view of the auxiliary lock for doors concerning this embodiment in the state where a lock arm was set in a lock position. It is a right side view of the auxiliary lock for doors according to this embodiment in a state where the lock arm is set at the locking position. It is a figure which shows the auxiliary | assistant lock for doors which concerns on this embodiment of the state which the lock arm evacuated to the unlocking position. It is a cross-sectional top view which shows the AA cross section in FIG. 2B. It is a longitudinal cross-section right side view which shows the BB cross section in FIG. It is a figure for demonstrating operation | movement of the auxiliary lock for doors which concerns on this embodiment, ((alpha)) has shown the state in which a lock arm exists in a locking position, ((beta)) is parallel to a door from a locking position. A state in which the linear movement is made in the direction is shown, and (γ) shows a state in which the lock arm is in the unlocked position.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Door, 11 Hinge structure, 12 Door knob, 15 Door frame, 20 Door auxiliary lock, 21 Base, 22 Wood screw, 23 Screw hole, 24 Fixing plate part, 25 Casing part, 26 1st support bar, 27 2nd Support bar, 31 Lock arm, 32 Press part, 33 Housing part, 34 Guide hole, 34a Straight part, 34b Arc part, 40 Elastic member.

Claims (3)

A base fixedly installed on the door frame side,
A lock arm installed on the base;
The lock arm protrudes on the door opening / closing track to prevent the door from being opened, and is retracted from the door opening / closing track to allow the door opening / closing operation to move freely. In the auxiliary lock for doors configured as follows:
The lock arm includes a guide hole that defines a reciprocating movement operation from the unlocking position to the locking position,
The base includes at least one support bar that conducts to the guide hole and is in sliding contact with the inner wall surface of the guide hole, and supports the movement of the lock arm;
An auxiliary lock for doors, wherein an elastic member that exerts an elastic force for holding the lock arm in a locked position is installed between the base and the lock arm. The auxiliary lock for doors according to claim 1,
The guide hole is formed in an arc shape from one end of the linear portion to linearly move the lock arm in a direction parallel to the door from the locked position, and rotates the lock arm to the unlocked position. Arc part,
The support bar is slidably in contact with only the inner wall surface of the linear portion and is provided on the inner wall surface of the guide hole extending from the linear portion to the arc portion as a rotation center when the lock arm rotates. An auxiliary lock for a door comprising a second support bar which is in sliding contact. The auxiliary lock for doors according to claim 1,
The guide hole is formed in an arc shape from one end of the linear portion to linearly move the lock arm in a direction parallel to the door from the locked position, and rotates the lock arm to the unlocked position. Arc part,
The support bar is slidably in contact with only the inner wall surface of the linear portion and is provided on the inner wall surface of the guide hole extending from the linear portion to the arc portion as a rotation center when the lock arm rotates. A second support bar that is in sliding contact;
When the lock arm is moved from the unlocked position to the locked position, the lock arm first presses the lock arm in the direction of the locked position against the elastic force of the elastic member. When the second support bar is moved from the arcuate part to the linear part, the lock arm is linearly moved in a direction parallel to the door by the elastic force of the elastic member. The first support bar comes into contact with the hole end on the end side different from the arcuate part forming side of the straight part, and the second support bar comes into contact with the inner wall surface of the straight part. Can be fixed at the locked position,
When the lock arm is moved from the locked position to the unlocked position, the lock arm first presses the lock arm in a direction parallel to the door against the elastic force of the elastic member. When the second support bar moves linearly along the shape and then is positioned at the end of the linear portion on the arc portion forming side, the lock arm is moved into the arc hole of the arc portion by the elastic force of the elastic member. By rotating and moving along the shape, the first support bar is positioned at the middle part of the linear part and becomes the center of rotational movement of the lock arm, and the second support bar is a straight line of the arc part. An auxiliary lock for a door, wherein the lock arm is fixed at an unlocked position by contacting a hole end on a side different from the part connection side.

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