JP3640351B2 - Door lock unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door lock unit having a mechanism that regulates an unauthorized unlocking operation of a dead bolt.
[0002]
[Prior art]
As an example of a conventional door lock unit, one disclosed in Japanese Utility Model Publication No. 51-38640 is shown in FIG. 6, in the internal space of the body 1, above and below the movable region of the dead bolt 2. The first and second immersion restriction levers 3 and 4 are pivotally supported. In addition, on both upper and lower surfaces of the dead bolt 2, butted surfaces 3A and 4A facing obliquely rearward are formed. Then, with the deadbolt 2 protruding from the end face of the door, the respective immersing restriction levers 3 and 4 are directed obliquely forward and are abutted against the respective abutting surfaces 3A and 4A. It is regulated.
[0003]
Further, as shown in FIGS. 7A and 7B, a pressing member 5 is rotatably connected to the tip of the first immersing restriction lever 3, and the dead bolt 2 is connected to the dead bolt 2. A slider 6 for assembling the pressing member 5 in a predetermined direction is assembled. Then, by rotating the locking / unlocking means provided on the outer surface of the door, the first immersion restriction lever 3 is rotated to the side away from the abutting surface 3A to release the abutting. 5 presses the second immersion restriction lever 4 and the butting between the second immersion restriction lever 4 and the butting surface 4A is also released (see FIG. 7B).
[0004]
Further, the pressing member 5 is provided with a spring 7 for urging the first immersion restriction lever 3 to a predetermined posture. The second immersion restriction lever 4 is also provided with the second immersion restriction lever 4 in a predetermined manner. A spring 8 is provided for biasing the posture.
[0005]
[Problems to be solved by the invention]
However, the conventional door lock unit described above includes the springs 7 and 8 for each of the immersing restriction levers 3 and 4, and additionally has a pressing member 5 and a slider 6 for interlocking the two immersing restriction levers 3 and 4. Therefore, there is a problem that the number of parts increases. In addition, since the immersion restriction levers 3 and 4 are arranged on both the upper and lower sides with the dead bolt 2 interposed therebetween, the door lock unit is enlarged in the vertical direction.
[0006]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a door lock unit that has fewer parts than the conventional one and can be downsized in the vertical direction.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a door lock unit according to the invention of claim 1 includes a body embedded in an end portion of a door, and is assembled to the body so as to slide between a locked position and an unlocked position. In the locking position, the door protrudes from the body and locks the door, while in the unlocking position, the dead bolt that immerses into the body and releases the lock, and a pair of rotating shafts facing the thickness direction of the door. Each of the first and second immersion control levers that are pivoted against each other in a direction that obliquely intersects the sliding direction with respect to the dead bolt at the locking position and regulates the immersion of the dead bolt into the body. The first and second immersion control levers are interlocked with each other by rotating the first immersion control lever with the locking / unlocking means provided on the outer surface of the door so that the first bolt and the second immersion control lever are engaged with each other. In the door lock unit that is released and the first immersion restriction lever pushes a part of the dead bolt to immerse the dead bolt into the unlocked position, the body is inserted through a long hole formed in the dead bolt. A guide shaft for guiding the dead bolt in the sliding direction is provided, and the rotation axis of the second immersion restriction lever is characterized in that it is also used as the guide shaft.
[0008]
According to a second aspect of the present invention, in the door lock unit according to the first aspect, the first immersion restriction lever is disposed above or below the movable area of the dead bolt, and the first immersion restriction lever is provided on the dead bolt. A receiving wall is provided on the unlocking position side of the part to be abutted with a lever entry space in between, and the second immersion restriction lever is a second immersion restriction lever with a guide shaft as a rotation shaft in between. A pressing lever extending in the opposite direction is integrally provided, and the pressing lever is positioned in the lever entry space in a state where the second immersion restriction lever is abutted against a part of the dead bolt at the locking position. When the first immersion restriction lever that is in contact with the dead bolt is rotated toward the lever entry space, the butt between the first immersion restriction lever and the dead bolt is released, and the first When the pressing lever is pushed by the immersion restricting lever in the lever entry space, the butt between the second immersing restricting lever and the dead bolt is released, and when the first immersing restricting lever is further rotated, This is characterized in that the receiving wall is pushed by the immersion restricting lever and the dead bolt is immersed in the unlocked position.
[0009]
According to a third aspect of the present invention, in the door lock unit according to the first or second aspect, the torsion spring that urges the guide shaft so that the second immersing restriction lever comes into contact with the dead bolt at the locking position. Is characterized by the fact that is pivotally supported.
[0010]
According to a fourth aspect of the present invention, in the door lock unit according to the third aspect, the pressing lever is provided with a pair of guide surfaces having different angles along the longitudinal direction, and by the elasticity of the torsion spring, These guide surfaces are configured to be pressed against the first immersion restriction lever, and one guide surface guides the first immersion restriction lever so that the dead bolt is pushed toward the locking position, and the other guide surface is The first immersion restriction lever is characterized in that it is configured to guide the dead bolt so as to push it toward the unlocking position.
[0011]
According to a fifth aspect of the present invention, in the door lock unit according to any one of the first to fourth aspects, a square tube cap is fitted to a portion of the dead bolt that protrudes from the body, and A retaining member for retaining the cylinder cap is penetrated, and this retaining member is characterized in that it is also used as a portion where the second immersion restriction lever is abutted.
[0012]
[Action and effect of the invention]
<Invention of Claim 1>
According to the first aspect of the present invention, since the pivot shaft of the second immersion control lever is also used as the guide shaft for the dead bolt slide guide, the number of parts compared to the conventional one in which these are provided separately. Can be reduced. In addition, since the second immersion restriction lever is arranged so as to overlap with the dead bolt inserted through the guide shaft in the thickness direction of the door, the door lock unit is provided in the vertical direction of the door as compared with the conventional one. Can be miniaturized.
[0013]
<Invention of Claim 2>
According to the second aspect of the present invention, the first immersion regulating lever that is abutted with the dead bolt at the locking position is rotated toward the lever entry space by operating the locking / unlocking means. Since the restriction lever pushes the pressing lever directly to release the butting between the second immersion restriction lever and the dead bolt, the second immersion restriction lever is interposed between the first and second immersion restriction levers as in the prior art. It is not necessary to provide a separate part for pressing, so that the number of parts can be reduced.
[0014]
<Invention of Claim 3>
According to the invention of claim 3, since the guide shaft is also used as a shaft support of the torsion spring for bringing the second immersing restriction lever into a butted state, the degree of common use increases, and the number of parts can be further reduced. It is done.
[0015]
<Invention of Claim 4>
In the invention of claim 4, when the first immersion restriction lever is rotated, the pressing lever is pressed against either the front guide surface or the rear guide surface, and the reaction force of the torsion spring Such a guide surface is pressed against the first immersion restriction lever. Here, the front guide surface guides the first immersion restriction lever so that the dead bolt is pushed toward the locking position, while the rear guide surface is unlocked by the first immersion restriction lever. Guide to push to the position side. In this way, the torsion spring not only biases the second immersive restriction lever to the butted state, but also serves to urge the first immersive restriction lever to one end of the rotation range. The number of parts can be reduced. Moreover, when the first immersion restriction lever passes through the boundary portion between the front and rear guide surfaces, a moderation feeling can be obtained and the operability is excellent.
[0016]
<Invention of Claim 5>
According to the invention of claim 5, since the retaining member penetrating the dead bolt for retaining the square tube cap also serves as a portion that is abutted against the second immersion restriction lever, the number of parts can be further reduced. It is done.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the door lock unit of the present embodiment is formed by assembling various parts to a body 10 embedded in a door 90. The body 10 has a flat box shape, and its front end wall 11 extends vertically to form a pair of flanges 12 and 12. Then, from the rear end side (the right side in FIG. 1) of the body 10, the flanges 12 and 12 are screwed to the end surface 92 of the door 90 by being embedded in a recess 91 opened in the end surface of the door 90.
[0018]
A latch hole 13 is formed through the front end wall 11 of the body 10 near the lower end, and a latch bolt 14 is inserted into the latch hole 13. The latch bolt 14 extends in a direction perpendicular to the front end wall 11 and forms a groove structure as a whole. For example, the front end of the latch bolt 14 is made solid by assembling a resin or the like on the inner portion of the groove structure, and one surface facing the rotation direction of the door 90 is rounded in a tapered shape. A curved surface is formed, and the opposite side is a flat locking surface.
[0019]
A long hole 15 is formed in the bottom of the groove-shaped structure of the latch bolt 14 along the longitudinal direction. The long hole 15 extends from the inner wall of the body 10 in the thickness direction of the door 90 (the surface of FIG. 1). The latch guide shaft 16 erected in a direction orthogonal to the direction is inserted. Then, the latch bolt 14 slides in the left-right direction in FIG. 1 while being guided by the latch guide shaft 16 and the latch hole 13. A coil spring 18 is interposed between the rear end wall 17 of the latch bolt 14 and the latch guide shaft 16. That is, the latch guide shaft 16 also serves as a locking portion of the coil spring 18. The latch spring 14 is urged forward by the coil spring 18, and the tip end of the latch bolt 14 always protrudes from the end surface of the door 90, and the door 90 is locked to the doorway.
[0020]
A rotating shaft 19 facing the thickness direction of the door 90 is provided below the movable region of the latch bolt 14 in the body 10, and a protrusion of the cam panel 20 supported by the rotating shaft 19 The rear end wall 17 of the latch bolt 14 is addressed from the front. Then, by rotating a knob or lever handle (not shown) provided on the outer surface of the door 90 (hereinafter collectively referred to as “grip”), the protrusion of the cam panel 20 causes the latch bolt 14 to be attached to the body 10. Pulling in to the back side, the locking between the door 90 and the doorway is released. When the turning operation of the handle is stopped, the cam board 20 is returned to the original state by the torsion spring 21.
[0021]
Now, a dead hole 25 is formed through the front end wall 11 of the body 10 at a position near the upper end, and a dead bolt 26 is inserted into the dead hole 25. As shown in FIG. 2, the dead bolt 26 is a rivet formed by fitting a rectangular tube cap 30 with one end to a folded portion of the sheet metal in a main body 29 formed by folding a strip-shaped sheet metal at an intermediate portion in the longitudinal direction. It has a structure that is secured by 33. Specifically, the rivet 33 passes through a pair of side walls 27 and 28 constituting the main body 29 and both side walls 30S and 30S of the square tube cap 30, and the side wall 27 and 28 of the main body 29 of the rivet 33 The tip portion of the second immersion restriction lever 50, which will be described later, is abutted against the portion that is passed between them.
[0022]
Both side walls 27 and 28 (hereinafter simply referred to as “side walls 27 and 28 of the dead bolt 26”) provided in the main body 29 of the dead bolt 26 are respectively formed with long holes 34 and 34 along the longitudinal direction. As shown in FIG. 1, a guide shaft 35 erected from the inner wall of the body 10 in the thickness direction of the door 90 is inserted into the holes 34 and 34. Then, it is guided by the guide shaft 35 and the dead hole 25, and the dead bolt 26 slides in the left-right direction in FIG.
[0023]
As shown in FIG. 2, the dead bolt 26 is formed with a pair of receiving walls 37 and 38 along the sliding direction. More specifically, a projecting piece extending from the middle portion of the upper edge of one side wall 28 of the deadbolt 26 is bent toward the opposite side wall 27 side and further in an intermediate position between the side walls 27 and 28. One receiving wall 37 is formed by bending upward.
[0024]
Further, the protruding piece extended from the rear end edge of the side wall 28 is bent toward the opposite side wall 27 and bent backward, and the protruding piece is extended upward from the bent portion toward the rear. Thus, the other receiving wall 38 is formed. The receiving walls 37 and 38 are arranged in such a manner that the plate thickness surfaces are opposed to each other in the sliding direction of the dead bolt 26, and the lever entry space 39 according to the present invention is between the receiving walls 37 and 38. It has become.
[0025]
The receiving walls 37 and 38 have substantially the same height, and receiving surfaces 40A and 40B that are inclined so as to be separated from each other as they go upward are formed at the upper end portions of the opposing surfaces. These receiving surfaces 40A and 40B generally form an angle of, for example, 45 degrees with respect to the sliding direction of the dead bolt 26, and in detail, a front end surface 43A of the first immersion restriction lever 43 described later, Slightly concave with the same curvature.
[0026]
In the present embodiment, the receiving surfaces 40A and 40B form an angle of 45 degrees with respect to the sliding direction of the dead bolt 26. However, the first immersion restriction lever 43 is inclined with respect to the sliding direction of the dead bolt 26. The receiving surfaces 40A and 40B are inclined at any angle so long as they face the tip surface 43A perpendicular to the longitudinal axis of the first immersion restriction lever 43. It may be. For example, when the receiving surfaces 40A and 40B are abutted in a state where the first immersion restriction lever 43 is opened at 30 degrees with respect to the vertical axis, the receiving surfaces 40A and 40B are in contact with the sliding direction of the dead bolt 26. Can be set to an angle of 30 degrees.
[0027]
As shown in FIG. 1, a rotating shaft 41 facing the thickness direction of the door 90 is provided above the movable region of the dead bolt 26 in the body 10, and a first immersion restriction is provided on the rotating shaft 41. A lever 43 is pivotally supported. As shown in FIG. 3, the first immersion restriction lever 43 extends from the rotation shaft 41 toward the dead bolt 26, and its front end surface 43 </ b> A has a curved surface with a radius of curvature from the rotation center. Yes. The front end surface 43A of the first immersion restriction lever 43 is located in a range facing the receiving walls 37 and 38 provided in the dead bolt 26 in the axial direction of the rotation shaft 41, and rotates the first immersion restriction lever 43. When it moves, it contacts a part of the receiving walls 37 and 38.
[0028]
A sliding contact boss 44 protrudes from the side surface of the distal end portion of the first immersion restriction lever 43 in a direction parallel to the axial direction of the rotation shaft 41. The sliding contact boss 44 is sandwiched between the receiving walls 37 and 38 of the dead bolt 26 and the side wall 27 (see FIG. 2) in the axial direction of the rotation shaft 41, and is in a rotation region of the pressing lever 52 described later. Located in.
[0029]
A pair of stopper protrusions 45, 45 protrude from the circumferential surface of the rotation center portion of the first immersion restriction lever 43, and these stopper protrusions 45, 45 and the column 46 fixed to the body 10. Thus, the rotation range of the first immersion restriction lever 43 is restricted. Specifically, the column 46 is sandwiched between the stopper protrusions 45 and 45 within the rotation region of the stopper protrusions 45 and 45. As shown in FIG. 3, when the support 46 and the one stopper protrusion 45 come into contact with each other, the first immersion restriction lever 43 moves downward, for example, 45 degrees forward obliquely with respect to the sliding direction of the dead bolt 26. It becomes the posture which turned to. At this time, the receiving surface 40A provided on the receiving wall 37 of the dead bolt 26 is brought into contact with the first immersion restriction lever 43, and the backward movement of the dead bolt 26 (immersion into the inner part of the body 10) is restricted. Further, the position of the dead bolt 26 at this time corresponds to the “locking position” according to the present invention, and the leading end of the dead bolt 26 protrudes from the body 10 (see FIG. 1) to lock the door 90.
[0030]
As shown in FIG. 5, when the column 46 and the other stopper protrusion 45 come into contact with each other, the first immersion restriction lever 43 moves, for example, at a lower angle of 45 degrees rearward with respect to the sliding direction of the dead bolt 26. Become a posture. At this time, the receiving surface 40B provided on the receiving wall 38 of the dead bolt 26 is brought into contact with the first immersion restriction lever 43, and the forward movement of the dead bolt 26 (movement of the body 10 outward) is restricted. Further, the position of the dead bolt 26 at this time corresponds to the “unlocking position” according to the present invention, and the tip of the dead bolt 26 is immersed in the body 10 and the door 90 is unlocked. Furthermore, when the column 46 is positioned away from both stopper protrusions 45, 45, the first immersion restriction lever 43 enters the lever entry space 39 as shown in FIG. 4.
[0031]
The first immersion restriction lever 43 is operated by operating either a cylinder key (not shown) provided on one outer surface of the door 90 or an operation knob (not shown) provided on the other outer surface as a locking / unlocking means. Moved.
[0032]
In the present embodiment, as shown in FIG. 3, a seesaw member 42 is passed through the guide shaft 35 for guiding the dead bolt 26. In addition, the front side of the seesaw member 42 from the guide shaft 35 forms the second immersion restriction lever 50, while the rear side serves as the pressing lever 52. In other words, the guide shaft 35 is pivotally supported by the second immersion restriction lever 50, and a pressing lever 52 extending in a direction opposite to the second immersion restriction lever 50 is integrally formed with the second immersion restriction lever 50. Has been. Further, the seesaw member 42 projects, for example, a portion penetrated by the guide shaft 35, and a tip surface thereof is brought into contact with the inner surface of the side wall 28 of the dead bolt 26, so that It is positioned.
[0033]
Then, the pressing lever 52 rotates between the receiving walls 37, 38 of the dead bolt 26 and the side wall 27, and comes into contact with the sliding contact boss 44 of the first immersion restriction lever 43. Further, when this rotational operation is viewed in the axial direction of the guide shaft 35, the pressing lever 52 is pushed by the first immersion restriction lever 43 in the lever entry space 39 between the receiving walls 37 and 38. ing.
[0034]
The upper end of the rear end portion of the pressing lever 52 is inclined so as to taper from the middle in the longitudinal direction, and the first guiding surface 53 and the second guiding surface 54 having different angles are arranged on the upper surface of the pressing lever 52. It is out. As shown in FIG. 3, the first guide surface 53 on the side close to the guide shaft 35 guides the first immersion restriction lever 43 so as to push the dead bolt 26 toward the lock position, and the other second guide surface 53. As shown in FIG. 5, the first immersion restriction lever 43 guides the dead bolt 26 so as to push it toward the unlock position.
[0035]
A torsion spring 60 is also supported on the guide shaft 35. The torsion spring 60 is formed by winding a spring steel wire in a coil shape, and the guide shaft 35 is inserted through the winding center. One end of the torsion spring 60 is fixed to a part of the second immersion restriction lever 50, while the other end is engaged with a spring stop boss 61 protruding from the body 10, so that the second immersion restriction lever 50 is provided. Is biased counterclockwise. As a result, the pressing lever 52 is pressed against the sliding contact boss 44 provided in the first immersion restriction lever 43, and the second immersion restriction lever 50 is positioned in a predetermined posture.
[0036]
Next, the operation of the door lock unit of the present embodiment configured as described above will be described. In order to close the opened door 90, the dead bolt 26 is immersed in the back side of the body 10, and the door 90 may be pressed against the doorway. At this time, the latch bolt 14 protrudes from the body 10 due to the elastic force of the coil spring 18, but the door 90 is pressed against the doorway in this state. Then, the tip curved surface of the latch bolt 14 comes into sliding contact with the edge of the entrance and exit, the latch bolt 14 is pushed into the body 10, and the coil spring 18 is extended accordingly. When the door 90 is completely closed, the latch bolt 14 enters a locking hole (not shown) provided at the edge of the doorway by the elastic force of the coil spring 18, and the door 90 is closed. Locked to the state.
[0037]
When the dead bolt 26 appears from the end face of the door 90 with the door 90 closed, the door is locked. Specifically, in the unlocked state, the dead bolt 26 is immersed in the body 10, and as shown in FIG. 5, the first immersion restriction lever 43 is in a posture in which the dead bolt 26 is directed obliquely rearward in the sliding direction. It has become. Thereby, the front end surface 43A of the first immersion restriction lever 43 is abutted against the receiving surface 40B provided on the receiving wall 38 on the rear end side of the dead bolt 26, and the advance of the dead bolt 26 is restricted.
[0038]
By operating either a cylinder key or an operation knob (not shown) in this state, the first immersion restriction lever 43 is rotated forward. Then, as shown in FIG. 4, the first immersion restriction lever 43 enters the lever entry space 39, pushes down the pressing lever 52, and raises the second immersion restriction lever 50 on the opposite side upward. When the first immersion restriction lever 43 is further rotated, the first immersion restriction lever 43 comes into contact with the receiving wall 37 on the front side of the dead bolt 26 and the dead bolt 26 is pushed forward.
[0039]
Here, during the rotation of the first immersion restriction lever 43, the sliding contact boss 44 of the first immersion restriction lever 43 is either the first guide surface 53 provided on the pressing lever 52 or the second guide surface 54. The guide levers 53 and 54 are pressed against the sliding contact boss 44 of the first immersion restriction lever 43 by the reaction force of the torsion spring 60. Here, the first guide surface 53 guides the first immersion restriction lever 43 so as to push the dead bolt 26 toward the locking position, while the second guide surface 54 indicates that the first immersion restriction lever 43 is dead bolt. 26 is pushed to the unlock position side. Therefore, the torsion spring 60 not only urges the second immersing restriction lever 50 to abut the rivet 33 as will be described later, but also pushes the first immersing restriction lever 43 at either end of the rotation range. The number of parts can also be reduced. In addition, a moderation feeling can be obtained when the first immersion restriction lever 43 passes the boundary portion between the both guide surfaces 53 and 54, and the operability is excellent.
[0040]
When the first immersion restriction lever 43 is rotated forward and retracted from the lever entry space 39, one stopper projection 45 provided in the first immersion restriction lever 43 comes into contact with the support 46 as shown in FIG. And no further rotation. At this time, the front end portion of the dead bolt 26 protrudes from the end surface 92 of the door 90, enters a lock hole (not shown) provided at the edge of the doorway, and is locked in a closed state. At this time, the first immersion restriction lever 43 is abutted against the receiving surface 40 </ b> A of the dead bolt 26 to restrict the backward movement of the dead bolt 26.
[0041]
When the first immersion restriction lever 43 is retracted upward from the lever entry space 39, the pressing lever 52 is moved upward following that, and the second immersion restriction lever 50 is moved downward. Then, as shown in FIG. 3, the second immersion restriction lever 50 is brought into contact with the rivet 33 in the dead bolt 26 with a gap. Here, for example, when the dead bolt 26 is illegally pushed in the immersing direction using a bar or the like, first, the first immersing restriction lever 43 and the receiving surface 40A of the dead bolt 26 come into contact with each other to restrict the immersing and dead. When the bolt 26 is pushed in, the second immersion restriction lever 50 and the rivet 33 of the dead bolt 26 abut against each other. And these 1st and 2nd immersion control levers 43 and 50 cooperate, and the immersion of the dead bolt 26 is controlled.
[0042]
In order to release the lock, either the cylinder key or the operation knob is operated to rotate the first immersion restriction lever 43 backward. Then, as shown in FIG. 4, the first immersion restriction lever 43 enters the lever entry space 39 to release the butting between the first immersion restriction lever 43 and the dead bolt 26, and the first immersion restriction lever 43, the pressing lever 52 is pushed downward, the second immersion restriction lever 50 tilts upward, and the butting between the second immersion restriction lever 50 and the dead bolt 26 is released. As a result, the dead bolt 26 can be immersed. When the first immersion restriction lever 43 is further rotated, the receiving wall 38 on the rear side of the dead bolt 26 is pushed backward, and the dead bolt 26 is immersed in the unlocked position.
[0043]
As described above, in the door lock unit according to the present embodiment, the dead bolt 26 is prohibited from being illegally operated by the first immersion restriction lever 43 and the second immersion restriction lever 50. Since the rotation shaft of the second immersion restriction lever 50 for restricting the immersion of the dead bolt 26 is shared by the guide shaft 35 for the slide guide of the dead bolt 26, these are provided separately. The number of parts can be reduced as compared with. In addition, since the second immersion restriction lever 50 and the dead bolt 26 are both inserted through the guide shaft 35 and overlapped in the thickness direction of the door, compared to the conventional one, in the vertical direction of the door, The door lock unit can be downsized.
[0044]
Further, in the door lock unit of the present embodiment, the first immersion restriction lever 43 is rotated toward the receiving surface 40A by the operation of the locking / unlocking means. Is pressed directly to release the butting between the second immersion restriction lever 50 and the dead bolt 26, so that, as in the prior art, a separate part for pressing between the first and second immersion restriction levers 43, 50 ( 6), the number of parts can be reduced. Furthermore, the guide shaft 35 is also used as a shaft support of a torsion spring 60 for bringing the second immersion restriction lever 50 into a butted state, and a rivet 33 for preventing the square cap 30 of the dead bolt 26 from coming off. Since it is also used as the abutting portion with the second immersion restriction lever 50, the number of parts can be further reduced.
[0045]
<Other embodiments>
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.
(1) In the above-described embodiment, the gap between the first immersion restriction lever 43 and a part of the dead bolt 26 is smaller than the gap between the second immersion restriction lever 50 and a part of the dead bolt 26. However, the clearance between the second immersion control lever and the dead bolt may be made smaller, or the clearances related to both immersion control levers may be made the same size.
(2) In the above embodiment, the dead bolt 26 is in contact with the first immersion restriction lever 43 even in the unlocked position (see FIG. 5), but the dead bolt and the first immersion restriction are in the unlocked position. It is good also as a structure which is not in a contact state with a lever.
[Brief description of the drawings]
FIG. 1 is a partially broken side view of a door lock unit according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a dead bolt.
FIG. 3 is a side sectional view of a door lock unit.
FIG. 4 is a side view of the door lock unit.
FIG. 5 is a side view of the door lock unit when the handle is operated in an unlocked state.
FIG. 6 is a side view showing a state in which the door lock unit is unlocked.
[Fig. 7]
[Explanation of symbols]
10 ... Body
26 ... Dead Bolt
29 ... Body
30 ... Square tube cap
33 ... Rivets
35 ... Guide shaft
39 ... Lever entry space
41 ... Rotating shaft
43 ... 1st immersion control lever
50 ... Second immersion control lever
52 ... Pressing lever
53, 54 ... Guide surface
60 ... Torsion spring
90 ... Door

Claims (5)

A body embedded at the end of the door;
It is assembled to the body and slides between a locked position and an unlocked position, and in the locked position, it protrudes from the body and locks the door, while in the unlocked position, it is immersed in the body and Deadbolt to unlock,
The door is pivoted about a pair of pivot shafts facing in the thickness direction of the door, and the dead bolt at the locked position is abutted in a direction obliquely intersecting the sliding direction, A first and a second immersion restriction lever for regulating the immersion of the dead bolt into the body;
The first and second immersion control levers are interlocked with each other by rotating the first immersion control lever with a locking / unlocking means provided on the outer surface of the door, so that the dead bolt at the locked position is interlocked. In the door lock unit in which the first immersion restriction lever presses a part of the dead bolt and immerses the dead bolt into the unlocked position.
The body is provided with a guide shaft that is inserted through a long hole formed in the dead bolt and guides the dead bolt in the sliding direction.
The door lock unit characterized in that the rotation shaft of the second immersion restriction lever is also used as the guide shaft. The first immersion restriction lever is disposed above or below the movable region of the dead bolt,
In the dead bolt, a receiving wall is provided on the unlocking position side of the portion where the first immersion restriction lever is abutted, with a lever entry space interposed therebetween,
The second immersion restriction lever is integrally provided with a pressing lever extending in a direction opposite to the second immersion restriction lever with the guide shaft serving as the rotation shaft interposed therebetween.
In the state where the second immersion restriction lever is butted against a part of the dead bolt at the locking position, the pressing lever is positioned in the lever entry space.
When the first immersive restriction lever that has been brought into contact with the dead bolt in the locked position is rotated toward the lever entry space, the butt between the first immersive restriction lever and the dead bolt is released. In addition, the pressing lever is pushed in the lever entry space by the first immersing restriction lever, so that the butt between the second immersing restriction lever and the dead bolt is released,
When the first immersion restriction lever is further rotated, the receiving wall is pushed by the first immersion restriction lever, and the dead bolt is immersed in the unlocked position. The door lock unit according to claim 1. The torsion spring which urges | biases the said 2nd immersion control lever so that it may contact | abut with the said dead bolt of the said locking position is pivotally supported by the said guide shaft. The door lock unit described. The pressing lever is provided with a pair of guide surfaces having different angles along the longitudinal direction, and the guide surfaces are pressed against the first immersion restriction lever by the resilient force of the torsion spring. age,
One of the guide surfaces guides the first immersion restriction lever so that the dead bolt is pushed toward the locking position, and the other guide surface has the first immersion restriction lever connected to the dead bolt. The door lock unit according to claim 3, wherein the door lock unit is configured to guide the door to be pushed toward the unlocking position. A square tube cap is fitted into a portion of the dead bolt that protrudes from the body, and a retaining member for retaining the rectangular tube cap is passed through the dead bolt. The door lock unit according to any one of claims 1 to 4, wherein the door lock unit is also used as a portion where the second immersion restriction lever is abutted.

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