JP2011162951A - Door lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door lock device which prevents a door of furniture from opening caused by the vibration of an earthquake and which can lock the door by the vibration of the earthquake even when the door is half-opened. <P>SOLUTION: This door lock device includes a lock device body 3 fitted to a furniture body 1, a slide member 4 slidably attached to the lock device body 3, a rod 5 which is fixed to a door 2 and which holds the slide member 4 at the distant end, and a lock member 6 for preventing the slide member 4 from sliding due to the vibration of an earthquake. The lock device body 3 includes a pair of arms 60a, 60b which comprise a pair of racks 30a, 30b and lock teeth 31 formed on the inner sides of the racks and on which the lock member 6 is rotatably supported, a spherical movable body 62, and claws 63a, 63b. Upon occurrence of an earthquake, the movable body 62 is moved by the vibration of the earthquake to rotate the both arms, whereby the claws 63a, 63b are engaged with the lock teeth 31 for locking the door. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an improvement of a door lock device that prevents furniture doors from being opened due to earthquake vibrations.

  A door lock device that prevents furniture doors from opening due to earthquake vibrations is attached to furniture with doors such as cupboards and bookshelves, etc. To prevent jumping out.

  Conventionally, various proposals have been made as this type of door lock device. For example, the door lock device disclosed in Patent Document 1 includes a lock device main body attached to a furniture main body and a locking tool attached to a door hinged on the furniture main body.

  The lock device main body includes a case forming an outer shell, a rod-shaped lock body that is provided in the case so as to freely protrude and hang down from the bottom portion of the case, a flange portion formed at an upper end of the lock body, And a plurality of spherical movable bodies housed in the housing.

  The case includes an insertion hole formed in the bottom portion through which the lock body is inserted, a cylindrical portion that rises from the bottom portion toward the inside of the case and communicates with the insertion hole, and from the inner surface of the case toward the inside of the case. It consists of a sheltered part that overhangs.

  The lock body is inserted into the cylindrical portion to cause the lower end portion to protrude from the insertion hole of the case, and the flange portion is in contact with the upper end of the cylindrical portion and is prevented from being removed from the insertion hole.

  In addition, the retracting portion is set to be substantially the same height as the flange portion and is formed in a slightly hollow shape, and the upper surface of the flange portion is formed in a gentle spherical shape, so that in normal time without vibration due to an earthquake The movable body does not move from the retracting portion.

  The locking device includes a locking portion that protrudes upward, and when the door is opened and closed in a normal state, the locking portion pushes up the rod body to be immersed in the case. Does not interfere with the opening and closing of the door.

  On the other hand, when an earthquake occurs, the movable body moves from the evacuation portion onto the flange portion due to the vibration of the earthquake, preventing the lock body from entering the case.

  Therefore, the lock body can be engaged with the locking tool to lock the door opening.

JP 2000-316655 A (FIG. 1)

  The above conventional door lock device can prevent the tableware or books contained in the furniture body from popping out by locking the door opening due to the vibration of the earthquake. There is a risk of problems being pointed out.

  First, since the conventional door lock device is formed by separating the lock device main body coupled to the furniture main body side and the locking member coupled to the door side, It is difficult to position and the installation of the door lock device is complicated.

  Second, the conventional door lock device does not function unless the door is closed and the lock device main body and the locking device overlap with each other, and functions completely when the door is half open. I can't.

  Therefore, an object of the present invention is to provide a door lock device that is easy to mount the door lock device and can lock the movement of the door even when the door is half open.

  Means for solving the above problem is that a door lock device is interposed between a furniture body and a door attached to the furniture body so as to be openable and closable, and is fixed to either the furniture body or the door. The lock device body is formed in a long shape, the slide member is slidably mounted in the longitudinal direction of the lock device body, and is fixed to either the furniture body or the door, and the slide member is held at the tip. And a lock member that is attached to the slide member and prevents the slide member from sliding due to earthquake vibration, and the lock device body includes a pair of racks that stand opposite to each other in the longitudinal direction. A plurality of locking teeth formed along the longitudinal direction on the inner side of these racks, and the slide member is in sliding contact with the outer periphery of the pair of racks A housing for housing the locking member and a smooth spherical groove formed on the bottom piece which is the bottom of the housing, and the locking member is rotatably supported on the bottom piece and has its tip at the end. A pair of arms that are brought close to both racks, a biasing means that biases the tips of these arms in a direction approaching, a movable body that is provided between the arms and is movable on the spherical groove, A claw provided at the tip of the arm and opposed to the locking teeth, and in a normal state, the movable body is maintained at the deepest part of the spherical groove, and the tip of each arm is provided with the biasing means. The moving body is moved in the spherical groove by the vibration of the earthquake to rotate the both arms in the event of an earthquake. And by, one or the tip of both of the arm is brought closer to the rack engages the pawl to the locking teeth is to lock the door and prevent the sliding of the slide member.

  According to the present invention, the lock device main body and the rod body attached to the furniture main body side or the door side are not separated and are maintained in a state of being connected via the piston member, so that the door lock device can be easily attached. It becomes possible.

  Further, even when the door is half-opened, the movable body is moved by the vibration of the earthquake and the locking teeth and the locking claws are engaged to lock the movement of the door.

  In addition, it can be formed thinner than the conventional door lock device, and the degree of freedom of the mounting position of the door lock device can be increased.

FIG. 1 is a partially cutaway plan view showing a state in which a door lock device according to an embodiment of the present invention is interposed between a furniture body and a door. FIG. 2A is a plan view of the door lock device according to the embodiment of the present invention, and shows a part of the slide member and the rod cut away. FIG.2 (b) is XX sectional drawing of the door lock apparatus which concerns on one embodiment of this invention. FIG. 3 is an enlarged perspective view showing a part of the slide member of the door lock device according to the embodiment of the present invention. FIG. 4 is an enlarged plan view showing the vicinity of the lock member of the door lock device according to the embodiment of the present invention, with a part of the slide member and the rod cut away. FIG. 5 is a YY sectional view showing the vicinity of the lock member of the door lock device according to the embodiment of the present invention. FIG. 6A is an enlarged plan view showing the vicinity of the lock member of the door lock device according to the embodiment of the present invention when vibration due to an earthquake acts on the left and right in the drawing, and a part of the slide member and the rod. Notched FIG. 6 (b) is an enlarged plan view showing the vicinity of the lock member of the door lock device according to the embodiment of the present invention when vibration caused by an earthquake acts on the left and right (up and down in the figure). A part of is cut away.

  Hereinafter, a door lock device showing an embodiment of the present invention will be described with reference to the drawings.

  The same reference numerals given throughout the several drawings indicate the same or corresponding parts.

  As shown in FIG. 1, the door lock device according to the present embodiment is interposed between a furniture body 1 and a door 2 that is attached to the furniture body 1 so as to be freely opened and closed.

  The door lock device is fixed to either the furniture main body 1 or the door 2 and is attached to be slidable in the longitudinal direction of the lock device main body 3. The slide member 4, the rod 5 fixed to the other of the furniture body 1 or the door 2 and holding the slide member 4 at the tip, and the slide member 4 attached to the slide member 4 due to earthquake vibration And a lock member 6 (FIG. 2) for preventing the slide.

  As shown in FIG. 2, the lock device main body 3 includes a pair of racks 30a and 30b that stand up against each other in the longitudinal direction, and a plurality of racks 30a and 30b that are formed along the longitudinal direction. And locking teeth 31.

  As shown in FIG. 3, the slide member 4 is formed on a housing 40 that slidably contacts the outer periphery of the pair of racks 30 a and 30 b and accommodates the lock member 6, and a bottom piece 43 that is the bottom of the housing 40. A gentle spherical groove 43a is provided.

  As shown in FIGS. 4 and 5, the lock member 6 is rotatably supported on the bottom piece 43 and has a pair of arms 60a and 60b whose ends are close to the racks 30a and 30b, and these arms 60a. , A biasing means 61 for biasing the tip of the arm 60b toward each other, a movable body 62 provided between the arms 60a and 60b and movable on the spherical groove 43c, and the arms 60a and 60b. Claw 63a, 63b which is provided in the tip part of this and faces the above-mentioned locking tooth 31.

  By providing the above-described configuration, the movable body 62 is maintained at the deepest portion S of the spherical groove 43c and the tips of the arms 60a and 60b approach the urging means 61 in the normal state. The slide member 4 is not hindered from being slid by being kept away from 30a and 30b.

  However, when an earthquake occurs, the movable body 62 moves on the spherical groove 43c due to the vibration of the earthquake and rotates the arms 60a and 60b, so that the tips of one or both of the arms 60a and 60b are moved. The racks 30a and 30b are brought close to each other and the claws 63a and 63b are engaged with the locking teeth 31 to prevent the sliding member 4 from sliding and lock the door 2.

  Below, each component of the said door lock apparatus is each demonstrated.

  In the present embodiment, as shown in FIG. 1, the door lock device is horizontally interposed between a furniture body 1 and a door 2 hinged to the furniture body 1. The rod 5 is telescopically inserted and retractable.

  The lock device main body 3 is rotatably attached to the furniture main body 1 via the furniture main body side bracket B1, and the rod 5 is rotatably attached to the door 2 via the door side bracket B2.

  By providing the above configuration, the door lock device contracts most when the door 2 is closed, and expands while rotating when the door 2 is opened.

  In the door lock device according to the present invention, the lock device main body 3 coupled to the furniture main body side and the rod 5 coupled to the door side are not separated as in the conventional door lock device.

  That is, since the lock device main body 3 that is the furniture main body side member and the rod 5 that is the door side member are maintained in a connected state, it is not necessary to adjust the position of the door side member with respect to the furniture main body member as in the prior art. The locking device can be easily attached.

  As shown in FIG. 2, the lock device main body 3 is formed in a long shape, and a pair of racks 30 a and 30 b standing opposite to each other in the longitudinal direction and a guide disposed opposite to each other in the short direction. The part 32 and the bottom part 33 are formed in a substantially rectangular shape.

  The guide portion 32 includes a pair of guide pieces 32a and 32b extending inward from the rod insertion side end portions of the racks 30a and 30b, and the opposing surfaces of the guide pieces 32a and 32b are slid onto the side surfaces of the rods. I will be in contact.

  On the other hand, the bottom portion 33 includes a bottom portion main body 34 that couples the opposite rod insertion side ends of the racks 30a and 30b, and an extending piece 35 that extends from the bottom portion main body 34 to the left side in the drawing. Become.

  And the said furniture piece side bracket B1 is attached to the said extension piece 35 so that rotation around the axis | shaft of the pin P1 which penetrates an extension piece up and down is provided, and the locking device main body 3 is provided with the said structure. It is possible to rotate in the horizontal direction (left and right direction in FIG. 2A).

  Each of the pair of racks 30a and 30b is formed in a long plate shape, and a plurality of engagements are provided along the longitudinal direction on the inner side of these racks 30a and 30b, that is, on the surface where the rack 30a and the rack 30b face each other. A stop tooth 31 is formed.

  In FIG. 2A, a part of the locking teeth is omitted.

  The lock device body 3 is provided with a slide member 4 that is slidable in the longitudinal direction, that is, along the racks 30a and 30b. The slide member 4 is fixed to the tip of the rod 5, and the rod 5 is moved. Accordingly, it slides in the left-right direction in FIG.

  As shown in FIG. 3, the slide member 4 is formed in a hollow substantially hexahedral shape (substantially box shape), and the pair of racks 30 a and 30 b penetrate the slide member 4.

  The slide member 4 includes a top piece 41 slidably in contact with the upper side of the pair of racks 30a and 30b, a pair of side pieces 42a and 42b slidably in contact with the outside of the racks 30a and 30b, and the pair of racks 30a and 30a. The housing 40 includes a bottom piece 43 that is in sliding contact with the lower side of 30b and is formed in a hollow quadrangular prism shape, and a rod side piece 45 and a bottom side piece 44 that stand up from the end of the bottom piece 43, respectively.

  The rod side piece 45 and the bottom side piece 44 are formed to have a width that does not contact the locking teeth 31 formed inside the pair of racks 30 a and 30 b, and the rod side piece 45 is the tip of the rod 5. Combined with

  With the above configuration, the slide member 4 can be slid along the longitudinal direction of the lock device main body 3 as the rod 5 moves, and dust is contained in a lock member 6 (described later) housed in the slide member 4. Prevents dust and dirt from adhering.

  On the upper surface of the bottom piece 43, there are formed a pair of side grooves 43a, 43b slidably in contact with the lower side of the pair of racks 30a, 30b, and a spherical groove 43c formed in a gentle spherical shape on the rod side. The distances from the deepest portion S, which is the center of the groove 43c, to both the racks 30a, 30b are equal.

  The gentle spherical shape means that the movable body 62 is maintained at the deepest portion S of the spherical groove 43c in a normal state without earthquake vibration (FIGS. 4 and 5), and the movable body 62 is moved from the deepest portion S by earthquake vibration. It refers to a shape that can move and act on the arms 60a, 60b. For example, it can be expressed as a mortar shape or a cone shape.

  As shown in FIG. 2, the rod 5 for sliding the slide member 4 has a prismatic rod body 50 whose tip is coupled to the slide member 4 and a proximal end side (right side in the figure) of the rod body 50. It consists of the base end part 51 extended.

  The door-side bracket B2 is attached to the base end portion 51 so as to be rotatable around the axis of the pin P2 penetrating the base end portion 51 up and down. It is possible to rotate in the left-right direction in FIG.

  The rod 5 is supported on both sides by a guide portion 32 provided at the right end of the pair of racks 30a, 30b in the drawing, and the rod side piece 45 of the slide member 4 is in sliding contact with the outer periphery of the pair of racks 30a, 30b. The tip is coupled to (Fig. 3).

  Further, the rod 5 is arranged at the axial center portion of the lock device main body 3, so that the rod 5 can smoothly appear and disappear in the lock device main body 3 (between both racks 30a and 30b).

  However, the shape of the rod 5 is not limited to the above, and it is possible to select the shape as appropriate. For example, although not shown, the rod body 50 is formed in a hollow prismatic shape, and the tip of the rod body May be coupled to the housing 40 of the slide member 4, and the pair of racks 30a, 30b may be projected and retracted in the rod body.

  The lock member 6 accommodated in the housing 40 of the slide member 4 is disposed between the racks 30a and 30b, and is rotatably supported on the bottom piece 43 of the slide member 4 so that the ends thereof are A pair of arms 60a and 60b that are brought close to the racks 30a and 30b, an urging means 61 that urges the arms 60a and 60b in a direction to approach them, and the arms 60a and 60b provided between the arms 60a and 60b. A movable body 62 that can move on the spherical groove 43c, and claws 63a and 63b that are provided at the distal ends of the arms 60a and 60b and face the locking teeth 31 are provided.

  By providing the above configuration, the door lock device can be formed thinner than the conventional door lock device, and the degree of freedom of the mounting position of the door lock device can be increased.

  The arms 60a and 60b are rotatably supported by a pin P3 standing on the bottom piece 43 of the slide member 4 and have a base end portion 64 whose outer periphery is formed in a semicircular shape, and extends from the base end portion 64. The arm main body 65 is provided, claws 63 a and 63 b provided at the tip of the arm main body 65, and an arc-shaped groove 63 c formed on the side surface of the arm main body 65 opposite to the rack.

  The arms 60a and 60b are arranged on the bottom piece 43 with the base end portion 64 and the arm main body 65 adjacent to each other, and are movable in a space A formed between the opposed grooves 63c and 63c. 62 is accommodated.

  Since the outer periphery of the base end portion 64 is formed in a semicircular shape in plan view, even if the arms 60a and 60b are adjacent to each other, the rotation of the arms 60a and 60b is not hindered, and the lock member 6 is compact. Can be formed.

  The claws 63a and 63b of the arms 60a and 60b are formed at positions farthest from the pin P3 while facing the locking teeth 31 of the racks 30a and 30b. As a result, the claws 63a and 63b have a large movement amount even if the rotation of the arms 60a and 60b is slight, and can quickly engage with the locking teeth 31.

  As shown in FIG. 4, the space A formed between the opposing grooves 63 c and 63 c is formed in a lens cross-sectional shape in plan view, and the center of the space A is a spherical groove in the slide member 4. This corresponds to the deepest portion S of 43c.

  Therefore, the movable body 62 maintained at the deepest portion S in the normal time without earthquake vibration is arranged at the center of the space A to avoid the contact between the arms 60a and 60b and the movable body 62 in the normal time. It becomes possible.

  Further, when an earthquake occurs, even if the movable body 62 moves in any of the upper, lower, left and right directions in FIG. 4, it acts on the arms 60 a and 60 b to engage the claws 64 a and 63 b with the locking teeth 31. It becomes possible.

  In addition, since the space A is arranged on the tip side of the arms 60a and 60b and the distance from the pin P3 is increased, when the movable body 62 moves on the spherical groove 43c due to earthquake vibration, the arm 60a, It becomes possible to rotate 60b.

  The movable body 62 accommodated in the space A formed between the grooves 63c and 63c is formed in a spherical shape. As a result, in a normal time without earthquake vibration, the spherical groove is formed as described above. It is maintained at the deepest part S of 43c, and when an earthquake occurs, it can roll on the spherical groove 43c and act on each of the arms 60a and 60b.

  The urging means 61 that urges the arms 60a and 60b to approach the distal ends thereof is provided in a U-shaped groove 65a having a U-shaped cross section formed on the base end side of the arm main body 65. It consists of a coil spring interposed between the main bodies 65, 65.

  Since the above-described configuration is provided, the urging means 61 and the pin P3 serving as a fulcrum of the arms 60a and 60b are arranged close to each other, and the ends of the arms 60a and 60b are easily separated from each other. The urging means 61 may be provided on the tip end side of 60b.

  Further, instead of the coil spring, an elastic member such as rubber can be used as the urging means 61.

  Next, the operation of the door lock device according to the present embodiment will be described below.

  In a normal state, as shown in FIGS. 4 and 5, the movable body 62 of the lock member 6 is maintained at the deepest portion S of the spherical groove 43c, and at the center of the space A formed by the grooves 63c of both arms 30a and 30b. Be placed.

  Therefore, the movable body 62 does not act on the arms 30a and 30b, and the tips of the arms 60a and 60b are kept closer to the urging means 61 and away from the racks 30a and 30b.

  Thus, the lock member 6 does not prevent the slide member 4 from sliding, and the door lock device does not prevent the door 2 from being opened and closed.

  When an earthquake occurs, the movable body 62 moves on the spherical groove 43c due to earthquake vibration and acts on both arms 60a and 60b.

  As shown in FIG. 6 (a), when the seismic vibration acts in the left-right direction in the figure, that is, in the longitudinal direction of the door lock device, and the movable body 62 moves in the left-right direction in the figure, The arms 60a and 60b are rotated by receiving the action from the movable body 62, and the tips of the arms 60a and 60b are separated from each other.

  Accordingly, the tips of both arms 60a and 60b approach both racks 30a and 30b, engage the claws 63a and 63b with the locking teeth 31, and prevent the sliding member 4 from sliding to lock the opening and closing of the door 2.

  In addition, as shown in FIG. 6 (b), when the vibration of the earthquake acts in the vertical direction in the figure, that is, in the direction of the end of the door lock device, the movable body 62 moves in the vertical direction in the figure. Both the arms 60a and 60b receive the action from the movable body 62 and rotate together in the moving direction of the movable body 62.

  For example, when the movable body 62 moves upward in FIG. 6B, the tip of one arm 60a approaches the rack 30a and engages the claw 63a with the locking tooth 31 to slide the slide member. The sliding of 4 is blocked and the opening and closing of the door 2 is locked.

  On the other hand, when the movable body 62 moves downward in FIG. 6B, the tip of the other arm 60a approaches the rack 30b as shown by a two-dot chain line in FIG. Engages with the locking teeth 31.

  That is, since the locking teeth 31 of the racks 30a and 30b are formed in substantially the entire area along the inside of the racks 30a and 30b, the slide member 4 can be arranged at any position on the lock device body 3. It becomes possible to lock the door 2 by engaging the claws 63a, 63b and the locking teeth 31.

  Therefore, even if the door 2 is in a half-open state, when the earthquake occurs, the door 2 is locked in that state, and it becomes possible to minimize popping out of tableware or books stored in the furniture body 1. .

  Further, when the earthquake stops, the movable body 62 moves to the deepest portion S according to the inclination of the spherical groove 43.

  Therefore, when the door lock device is in the state shown in FIG. 6A when an earthquake occurs, both arms 60a and 60b approach both ends according to the urging force of the urging means 61.

  As a result, the ends of the arms 60a and 60b are separated from the racks 30a and 30b, the engagement between the claws 63a and 63b and the locking teeth 31 is released, and the door 2 can be opened and closed.

  Further, when the door lock device is in the state shown in FIG. 6B when an earthquake occurs, both arms 60a and 60b rotate according to the movement of the movable body 62, and the leading end of the approaching arm 60a is removed from the rack 30a. The engagement between the claw 63a and the locking tooth 31 is released, and the door 2 can be opened and closed.

  While the preferred embodiment of the present invention has been described above, it should be understood that modifications, variations and changes may be made without departing from the scope of the claims.

  For example, in the above-described embodiment, the door lock device according to the present invention is configured to lock the opening and closing of the door 2 hinged to the furniture body 1, but the present invention is not limited thereto, and a bracket for attaching the door lock device to the furniture is provided. It is of course possible to use the door lock device according to the present invention for a sliding door or a drawer door by appropriately selecting.

  Further, the door lock device of the present invention can lock the door even when the furniture is inclined due to factors other than the earthquake.

A Space B1 Furniture body side bracket B2 Door side brackets P1, P2, P3 Pin 1 Furniture body 2 Door 3 Locking device body 4 Slide member 5 Rod 6 Lock members 30a, 30b Rack 31 Locking tooth 32 Guide portion 33 Bottom portion 40 Housing 41 Top piece 42a, 42b Side piece 43 Bottom piece 43a Spherical groove 44 Bottom side piece 45 Rod side piece 50 Rod body 60a, 60b Arm 61 Energizing means 62 Movable body 63a, 63b Claw 63c Groove 64 Base end 65 Arm body

Claims (4)

It is interposed between the furniture body and a door that can be attached to the furniture body so that it can be opened and closed.
A lock device main body fixed to one of the furniture main body or the door and formed into a long shape, a slide member attached slidably in the longitudinal direction of the lock device main body, and either the furniture main body or the door A rod that is fixed to the other end and holds the slide member at the tip, and a lock member that is attached to the slide member and prevents the slide member from sliding due to earthquake vibrations.
The lock device body includes a pair of racks that stand up against each other in the longitudinal direction, and a plurality of locking teeth formed along the longitudinal direction inside these racks,
The slide member includes a housing that slidably contacts the outer periphery of the pair of racks and accommodates the lock member, and a gentle spherical spherical groove formed on a bottom piece that is the bottom of the housing,
The lock member is rotatably supported on the bottom piece and has a pair of arms that move the front and rear ends of the two racks, a biasing unit that biases the ends of the arms toward each other, and both the arms. A movable body provided between the movable body and movable on the spherical groove, and a claw provided at the tip of each arm and facing the locking teeth,
In a normal state, the movable body is maintained at the deepest portion of the spherical groove, and the tip of each arm is maintained closer to the urging means and away from the rack to prevent the sliding member from sliding. Without
When an earthquake occurs, the movable body moves on the spherical groove due to the vibration of the earthquake and rotates both arms, thereby bringing one or both ends of the arms closer to the rack and engaging the claws with the engagement. A door locking device, wherein the door locking device engages with a stop tooth and prevents the sliding member from sliding to lock the door. The arm includes a base end portion rotatably supported by a pin standing on the bottom piece, an arm main body extending from the base end portion, the claw provided at a front end of the arm main body, An arc-shaped groove formed on the side opposite to the rack of the arm body,
Each of the arms is disposed on the bottom piece with the arm body adjacent thereto,
The center of the space formed between the grooves facing each other corresponds to the deepest part of the spherical groove,
2. The door lock device according to claim 1, wherein the movable body is maintained at the deepest portion of the spherical groove in a normal state and is disposed at the center of the space, and does not act on both the arms. The housing is formed in a hollow quadrangular prism shape with a top piece that is in sliding contact with the upper side of the pair of racks, a pair of side pieces that are in sliding contact with the outside of each rack, and a bottom piece that is in sliding contact with the lower side of the pair. And
The slide member includes the housing, a rod side piece rising from a rod side end portion of the bottom piece, and a bottom side piece standing up from a bottom side end portion of the bottom piece, and is formed in a hollow substantially hexahedron shape. The door lock device according to claim 1, wherein the door lock device is provided. The lock device main body includes a guide portion and a bottom portion that are arranged to face each other in the short direction,
The guide portion comprises a pair of guide pieces extending inward from the rod insertion side end portions of the racks,
4. The door lock device according to claim 3, wherein a tip of the rod is coupled to the rod side piece, and a side surface thereof is slidably contacted with an opposing surface of the pair of guide pieces.

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