JP4130082B2 - Structure of dead bolt for lock - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a lock dead bolt attached to a door.
[0002]
[Prior art]
If a thief enters an answering house, not only picking but also a bar can be used to destroy the lock box. When a thief breaks the lock box, the dead bolt that protrudes to the strike side is an obstacle, so a bar is usually placed in the gap between the front wall of the lock box with the dead window and the vertical frame of the door frame. Forcibly insert the tip of the door, and try to pry it open with a force of “Dawn, Dawn” toward the inside of the case body of the lock box against the dead bolt. In this case, since the side pressure intersecting with the dead bolt is concentrated on the edge c of the dead window b of the case body a, the case body a is destroyed as shown in FIG.
[0003]
In this destruction phenomenon, the upper and lower edge portions of the edge portion c are torn diagonally, and as a result, the edge portion (angle portion) of the case body a rises from the outer wall surface of the wide vertical wall d of the case body a. Deform. In addition, the deadbolt itself may even bend from the middle. Therefore, countermeasures against this are currently demanded.
[0004]
[Problems to be solved by the invention]
A first object of the present invention is to provide a structure of a lock dead bolt that can prevent side pressure intersecting with a dead bolt from being concentrated on the edge of a dead window of a lock box. The second object is to achieve the first object by reducing the number of parts. The third purpose is to strengthen the deadbolt itself on the premise of the first purpose.
[0005]
[Means for Solving the Problems]
The structure of the dead bolt for lock according to the present invention is the structure of a dead bolt for lock comprising a frame-shaped body and a cap-shaped engagement head that is fixedly fitted to the tip of the frame-shaped body. , fit the plate-like pressing piece fixedly in the gap set between the frame-shaped body of the inserted distal portion and the inner wall surface of the engaging head, the pressing piece is entering fixedly into the gap One end portion 21a and a tool that is continuous with the one end portion 21a and is bent so as to protrude in the vertical direction from the horizontal wall 13 of the engaging head, and against the dead bolt from the outdoor side toward the indoor side. It is characterized by comprising the other end portion 21b to which side pressure is applied to the wide vertical wall of the lock box near the dead window when external pressure is applied .
[0006]
The lock deadbolt structure of the present invention is a lock deadbolt structure comprising a frame-shaped body and a cap-shaped engagement head that is fixedly fitted to the front end of the frame-shaped body. In this case, a small fitting portion is formed on the wall of the frame-shaped body, and a holding piece is fixedly fitted into the small fitting portion, and this holding piece is a tool against the dead bolt from the outdoor side toward the indoor side. When an external pressure is applied, a holding projection that protrudes from the horizontal wall of the engaging head so that side pressure is applied to the wide vertical wall of the lock box near the dead window, and an end face of this holding projection are connected to It has an insertion part inserted in the small fitting part, It is characterized by the above-mentioned.
[0007]
The lock deadbolt structure of the present invention is a lock deadbolt structure comprising a frame-shaped body and a cap-shaped engagement head that is fixedly fitted to the front end of the frame-shaped body. In this case, a plate-like holding piece is fixedly fitted in a gap set between the inserted end of the frame-like body and the inner wall surface of the engaging head, and this holding piece is moved from the outdoor to the indoor direction. When external pressure is applied to the dead bolt by a tool, it has a holding protrusion that protrudes from the upper wall of the engaging head so that side pressure can be applied to the wide vertical wall of the lock box near the dead window. Further, a reinforcing plate having a restraining protrusion at the rear end is fixedly incorporated in the frame-shaped body, and the restraining protrusion of the reinforcing plate applies a side pressure to the side wall of the lock box. It protrudes from the lower wall of the engaging head so that it can be used.
[0008]
Furthermore, the structure of the lock dead bolt according to the present invention is the structure of a lock dead bolt comprising a frame-shaped body and a cap-shaped engagement head that is fixedly fitted to the front end of the frame-shaped body. In this case, a plate-like holding piece is fixedly fitted in a gap set between the inserted end of the frame-like body and the inner wall surface of the engaging head, and this holding piece is moved from the outdoor to the indoor direction. And when the external pressure by the tool is applied to the dead bolt, it has a restraining projection part that projects from the horizontal wall of the engaging head so that side pressure is applied to the wide vertical wall of the lock box near the dead window, A core rod is incorporated in the frame-shaped body from the front end portion to the rear end portion.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 thru | or FIG. 5 is each explanatory drawing which shows 1st Example of the deadbolt X for locks of this invention. FIG. 1 is a perspective view showing a state in which the respective members are coupled, and FIG. 2 is an exploded perspective view. Each main member is made of hard metal.
First, reference numeral 1 denotes a frame-shaped body formed by bending a central portion of a single metal plate. The frame-like body 1 has a channel shape or a cross section or an end face, for example.
[0010]
The configuration of each part of the frame-shaped body 1 will be described with reference to FIG. Reference numeral 2 denotes a long plate-like upper wall, and a horizontal engagement hole-like first engagement portion 3 is formed from a rear end portion of the upper wall 2 to a portion closer to the center portion. Further, a penetrating small fitting portion 4 is formed on the upper wall 2 on the distal end side from the first engaging portion 3. Reference numerals 5 and 6 denote left and right opposing side walls that are continuous with the upper wall 2, and the lower side of these opposing side walls 5 and 6 has a second long engaging portion 7 that is slightly longer than the first engaging portion 3. , 7 are formed as a pair.
[0011]
The extension engagement portion 51 of the dead cam 50 is engaged with the first engagement portion 3 of the dead bolt X (see FIG. 4), while the second engagement portions 7 and 7 are within the lock box 52. The fixed support shaft 53 provided horizontally is engaged. The dead bolt X advances and retreats with reference to the rectangular dead window 54 on the front wall 52a of the lock box 52 while being guided by the fixed support shaft 53 provided horizontally on the lock box 52 by the driving force of the dead cam 50 shown in FIG. Move.
In FIG. 4, reference numerals 52b and 52b denote left and right case side walls (the front side wall and the rear side wall of the case body) when the front wall (the wide vertical side wall of the case body) 52a is the front side. ). Further, in FIG. 4, portions not related to the specific requirements of the present invention are omitted.
[0012]
Returning to FIG. Next, reference numeral 11 denotes a cap-shaped engagement head that is fitted to the front end 1 a of the frame-shaped body 1. The engaging head 11 has a box shape with a rear end opening 12. The width dimension of the upper wall 13 as a horizontal wall and the lateral width of the opening 12 are appropriately set. In particular, the lateral width of the opening 12 is such that the inner wall surfaces of the left and right opposing side walls 14 and 15 are perfect. It is set to be joined to the inner wall surfaces of the opposing side walls 5 and 6 of the frame-shaped body 1. On the other hand, the vertical dimension of the left and right opposing side walls 14 and 15 is slightly longer than that of the opposing side walls 5 and 6 of the frame-shaped body 1.
[0013]
Therefore, when the engaging head 11 is fitted on the front end 1 a of the frame-shaped body 1, the top surface of the top of the upper wall 2 of the frame-shaped body 1 and the inner wall surface of the upper wall 13 of the engaging head 11. Between the two, a gap 18 into which the bent plate-like holding piece 21 can enter is formed. As shown in FIG. 4, when the engaging head 11 is externally fitted to the distal end portion 1 a of the frame-shaped body 1, the inner wall surface of the front wall 16 of the engaging head 11 is interposed via the holding piece 21. It contacts the front end surface of the frame-shaped body 1.
[0014]
Next, the holding piece 21 is formed by appropriately bending a hard long plate a plurality of times. In this embodiment, the one end portion 21a entering the gap 18 in the engaging head 11 described above is a frame. The other end portion 21 b that is bent at a substantially right angle so as to come into surface contact with the top surface of the distal end portion 1 a of the cylindrical body 1 and the distal end surface thereof, while the other end portion 21 b protruding from the engaging head portion 11 is an upper wall 13 of the engaging head portion 11. It is formed in a protruding shape by being bent into a U-shape downward. This restraining projection part 22 fulfills a restraining function that applies a side pressure to the case side walls 52b, 52b of the lock box 52 directly or indirectly through another reinforcing plate.
[0015]
Further, a vertical bar-like insertion portion 23 that is fixedly fitted to the small fitting portion 4 of the frame-shaped body 1 is provided continuously on the lower end surface of the holding protrusion portion 22 of the holding piece 21. From the angle-shaped one end 21a of the holding piece 21 to the downward U-shaped protruding portion 22 is continuous with the same width, which is at least substantially the same as the width of the upper wall 2 of the frame-shaped body 1; Or it protrudes slightly. In this embodiment, the width of the protruding portion 22 is set to be substantially the same as the width of the upper wall 13 of the engaging head 11 in order to sufficiently exert the lateral pressure function of the holding piece 21.
[0016]
Reference numeral 25 denotes a reinforcing plate having a predetermined size that is fitted into the lower ends of the opposite side walls 5 and 6 of the frame-shaped body 1. The reinforcing plate 25 contacts the inner wall surface of the lower wall 17 of the engaging head 11.
[0017]
In the above configuration, first, the holding piece 21 is aligned with the frame body so that the vertical portion of the one end portion 21a of the holding piece 21 is in contact with the distal end surface of the frame body 1. Next, the insertion portion 23 of the other end portion 21 b of the holding piece 21 is inserted into the small fitting protrusion 4, and the holding piece 21 is coupled to the frame-shaped body 1. Next, the engaging head 11 is externally fitted in a state where the reinforcing plate 25 is fitted into the lower end of the frame-shaped body 1. Then, each structural member unites completely.
[0018]
Next, the united dead bolt X is attached to the lock box 52 as shown in FIG. If the thief forcibly inserts the tip of the bar into the gap between the front wall (front side wall) 52a of the lock box and the vertical frame of the door frame (not shown), Even if force is applied to the wide vertical wall 52b side (indoor side), the restraining projection portion 22 of the restraining piece 21 remains on the inner wall surface of the wide vertical wall 52b near the dead window 54 of the case body. Since the side pressure is applied directly or through another reinforcing plate, the force is not concentrated only on the edge of the dead window 54 of the case body (side pressure dispersion). Therefore, it is possible to prevent the deformation so that the corners of the edge of the dead window 54 are torn diagonally and the edge rises outward.
[0019]
【Example】
In the embodiment of the present invention, the frame-shaped body includes a square-shaped body having a square cross section in addition to the end face channel shape. Further, the other end portion of the holding piece 21 is formed in a downward U-shape, but the holding projection portion 22 may have an angle shape. Next, in this section, the second to fourth embodiments will be described. In the description of these embodiments, portions that are the same as or similar to those in the first embodiment (the functions are the same) are denoted by the same or similar reference numerals, and redundant descriptions are omitted.
[0020]
In the second embodiment of the dead bolt X1 shown in FIGS. 6 to 8, the main differences from the first embodiment are the shape of the holding piece 21A, the size of the engaging head 11A, and the frame-shaped body. It is the number of small fitting portions 4A and 4A for holding pieces formed on the upper wall 2 of 1A.
[0021]
In other words, the holding piece 21A does not have a portion other than the holding protrusion portion 22 (particularly, a portion inserted into the engaging head portion 11A). A pair of insertion portions 23A and 23A are connected to both end portions of the downward U-shaped holding protrusion 22. Therefore, the size of the cap-shaped engaging head 11A fitted to the tip 1a of the frame-shaped body 1A is formed so that no gap is generated between the frame-shaped body 1A. Further, two small fitting portions 4A and 4A into which the insertion portions 23A and 23A are fitted are provided at a portion near the distal end portion 1a of the frame-shaped body 1A. Even if comprised in this way, the objective same as 1st Example can be achieved.
[0022]
In the third embodiment of the dead bolt X2 shown in FIGS. 9 to 12, the main difference from the first embodiment is that the shape of the frame body 1B, the shape of the holding piece 21B, and the reinforcing plate 25B. Shape.
[0023]
First, the shape of the frame body 1B will be described. Reference numeral 31 denotes a stopper portion projecting from the upper wall 2B of the front end portion 1a. The stopper portion 31 is formed by cutting a part of the upper wall 2B. Reference numeral 32 denotes a lateral pressure restraining protrusion continuously provided in a fin shape downward from the center of the left and right opposing side walls 5B, 6B. These restraining protrusions 32, 32 are formed to be slightly wider in the front-rear direction.
[0024]
Next, the shape of the holding piece 21B will be described. The holding piece 21B is formed in a cross-sectional angle (L-shaped) shape, and as shown in FIG. 11, the one end 21a is in the gap 18 and the end face is the stopper 31. On the other hand, the other vertical end 21b protrudes from the upper wall 13 of the engaging head 11B.
[0025]
Next, the reinforcing plate 25B is longer than the first embodiment and has a plurality of bent portions. That is, 33 is an end surface channel-shaped tip portion, and the outer wall surface of the tip portion 33 fits (surface contact) with the inner wall surface on the tip portion side of the engaging head 11B. Further, the rear end portion provided in a horizontal state at the front end portion 33 is bent in an angle shape or a step shape in the middle.
[0026]
Therefore, the angle-shaped portion 34 at the rear end portion is shaped so as to be sandwiched between the lateral pressure restraining protrusions 32, 32 of the left and right opposing side walls 5B, 6B. Therefore, the dead bolt X2 of the third embodiment includes the first holding piece 21B protruding upward from the upper wall 2B of the frame-shaped body 1B, and the end surfaces of the left and right opposing side walls 5B, 6B of the frame-shaped body 1B. A second restraining projection 32, 32 projecting downward from the lower wall 17 of the engaging head 11B or / and an angled rear end 34 of the reinforcing plate 25B. Therefore, at least the same object as the first embodiment can be achieved.
[0027]
The reason why it is expressed as “or / and” is that depending on the design, there may be a case where the protruding portions 32 and 32 are not formed on the left and right opposing side walls 5B and 6B of the frame-shaped body 1B. In such a case, since the angle-shaped rear end portion 34 of the reinforcing plate 25B is exposed, a side pressure is directly applied to the lock box (the wide vertical wall of the case body).
[0028]
In the fourth embodiment of the dead bolt X3 shown in FIGS. 13 to 15, the main difference from the first embodiment is that the main part of the first embodiment is included as it is, and the purpose of the first embodiment is newly added. The structural requirements are limited in consideration of the purpose (to increase the toughness of the dead bolt).
[0029]
That is, 40 is a core rod fixedly provided in the dead bolt X3, and this core rod 40 is connected to the frame-shaped body 1C via small projecting engagement portions 40a, 40a projecting at both ends thereof. A rear end side engaged portion (for example, a notch portion) 41 formed on the rear wall 8 and a front end side engaged portion (for example, a groove portion) 42 formed on the inner wall surface of the vertical portion on the one end portion 21a side of the holding piece 21C. Are fixedly engaged with each other. The core rod 40 is quenched to make the dead bolt X3 strong. The tough core rod 40 may be added to other embodiments as well.
[0030]
【The invention's effect】
As is clear from the above description, the present invention has the following effects.
(1) It is possible to prevent the side pressure crossing the dead bolt from being concentrated on the edge of the dead window of the lock box. Therefore, the lock box is not easily damaged.
(2) The first object of the present invention can be achieved by reducing the number of parts.
(3) In the case of the embodiment in which the core rod is added, the dead bolt itself can be made tough.
[Brief description of the drawings]
1 to 5 are schematic explanatory views showing a first embodiment of the present invention. 6 to 8 are schematic explanatory views showing a second embodiment of the present invention. 9 to 12 are schematic explanatory views showing a third embodiment of the present invention. 13 to 15 are schematic explanatory views showing a fourth embodiment of the present invention. FIG. 16 is a schematic explanatory diagram for explaining a conventional defect.
FIG. 1 is a perspective view of a first embodiment.
FIG. 2 is an exploded perspective view.
3 is a schematic cross-sectional view taken along line 3-3 in FIG.
4 is a schematic sectional view taken along line 4-4 of FIG.
FIG. 5 is a schematic explanatory diagram showing an example of an embodiment in the first example.
FIG. 6 is a perspective view showing a second embodiment.
FIG. 7 is an exploded perspective view.
FIG. 8 is a schematic explanatory diagram showing an example of an embodiment in a second example.
FIG. 9 is a perspective view showing a third embodiment.
FIG. 10 is an exploded perspective view.
FIG. 11 is a schematic cross-sectional explanatory diagram of a main part.
FIG. 12 is a schematic explanatory diagram showing an example of an embodiment in a third example.
FIG. 13 is a perspective view showing a fourth embodiment.
FIG. 14 is an exploded perspective view.
FIG. 15 is a schematic explanatory diagram showing an example of an embodiment in a fourth example.
FIG. 16 is a schematic explanatory diagram for explaining a conventional defect.
[Explanation of symbols]
X, X1, X2, X3 ... dead bolt, 1, 1A, 1B, 1C ... frame body, 2 ... upper wall, 3 ... first engaging portion, 4, 4A ... small fitting portion, 5, 5B, 6 , 6B ... opposing side wall, 7 ... second engaging portion, 8 ... rear wall, 11, 11A, 11B ... engaging head, 12 ... rear end opening, 13 ... upper wall (horizontal wall), 14, 15 ... opposing Side wall, 16 ... front wall, 17 ... lower wall, 18 ... gap, 21, 21A, 21B, 21C ... holding piece, 21a ... one end, 21b ... other end, 22 ... holding projection, 23 ... insertion part, 25 , 25B ... reinforcing plate, 31 ... stopper portion, 32 ... pressing protrusion, 33 ... tip portion, 34 ... rear end portion, 40 ... core bar, 41 ... front end side engaged portion, 42 ... rear end side engaged portion Part, 5O ... dead cam, 51 ... engaging part, 52 ... lock box, 52a ... front wall, ..., 52b ... case side wall, 53 ... fixed spindle, 54 ... dead window.

Claims (5)

In the structure of a lock dead bolt comprising a frame-shaped body and a cap-shaped engaging head fixedly fitted to the front-end portion of the frame-shaped body, the front-end portion into which the frame-shaped body is inserted A plate-shaped holding piece is fixedly fitted into a gap set between the engaging head and the inner wall surface of the engaging head. The holding piece is fixedly inserted into the gap, and is connected to the one end 21a. And is bent so as to protrude vertically from the horizontal wall 13 of the engaging head, and when external pressure is applied to the dead bolt from the outdoor side to the indoor side by a tool, The structure of a dead bolt for locks, comprising: the other end portion 21b to which side pressure is applied to the wide vertical wall of the lock box .   In the structure of a lock dead bolt consisting of a frame-shaped body and a cap-shaped engagement head that is fixedly fitted to the tip of the frame-shaped body, a small fit is made to the wall of the frame-shaped body The holding piece is fixedly fitted into this small fitting portion, and this holding piece is locked to the lock box near the dead window when an external pressure is applied to the dead bolt from the outside of the room to the inside of the room. A holding protrusion that protrudes from the horizontal wall of the engaging head so that side pressure is applied to the wide vertical wall, and an insertion portion that is connected to the end surface of the holding protrusion and is fitted into the small fitting portion. A structure of a dead bolt for a lock characterized by   In the structure of a lock dead bolt comprising a frame-shaped body and a cap-shaped engaging head fixedly fitted to the front-end portion of the frame-shaped body, the front-end portion into which the frame-shaped body is inserted A plate-shaped holding piece is fixedly inserted into the gap set between the head and the inner wall surface of the engaging head, and this holding piece is applied from the outside to the inside of the room when an external pressure is applied to the dead bolt by a tool. And a holding protrusion protruding from the upper wall of the engaging head so that side pressure can be applied to the wide vertical wall of the lock box near the dead window. A reinforcing plate having a restraining protrusion at the end is fixedly incorporated, and the restraining protrusion of this reinforcing plate is provided from the lower wall of the engaging head so that side pressure can be applied to the side wall of the lock box. A lock deadbolt structure characterized by protruding. In claim 3, the opposed side walls of the left and right of the frame-shaped body, protrusions suppressed for lateral pressure to continuously provided to the fin shape is formed below the rear end of the reinforcing plate of these restraining protrusions within 32 A structure of a dead bolt for a lock, in which a restraining protrusion bent at a portion is located.   In the structure of a lock dead bolt comprising a frame-shaped body and a cap-shaped engaging head fixedly fitted to the front-end portion of the frame-shaped body, the front-end portion into which the frame-shaped body is inserted A plate-shaped holding piece is fixedly inserted into the gap set between the head and the inner wall surface of the engaging head, and this holding piece is applied from the outside to the inside of the room when an external pressure is applied to the dead bolt by a tool. A locking projection protruding from the horizontal wall of the engaging head so that side pressure is applied to the wide vertical wall of the lock box near the dead window, and the frame-shaped body has a front end portion to a rear end portion. The structure of a dead bolt for locks, characterized in that a core rod is incorporated to the end.

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