JP4974797B2 - Door strike device - Google Patents

Description

  The present invention relates to a door strike device attached to a door frame.

  Patent Document 1 describes a locking device using a solenoid. This lock device is a door strike device incorporated in a vertical frame of a door frame or a recess of a column in order to lock a door of a building via a locking lever and a latch bolt. In addition, the door strike device has a locking lever that engages and disengages with a latch bolt provided at the free end of the door.

  The locking lever is locked (locked) and unlocked (unlocked) by driving a solenoid (remote operation) via a control device provided on the wall surface of the building or at an appropriate location.

  FIG. 20 is an exploded perspective view of the door strike device of Patent Document 1. FIG. Here, the configuration of the door strike device will be described with reference to FIG.

  Reference numeral 1 denotes a case-like mounting body that is incorporated in a vertical frame of a door frame or a column recess. The attachment body 1 is a square case having a front surface (front surface) and a back surface (bottom surface) that are open and having a cutout portion on one side wall. Reference numeral 2 denotes a bottom wall member fixed to the back side of the attachment body 1. On the other hand, 3 is a front plate which is fixed to the front side of the mounting body 1 via a fixing tool 4. The mounting body 1, the bottom wall member 2, and the front plate 3 are appropriately formed with unnumbered flat portions, cutout portions, screw hole portions, shaft holes, and the like.

  Moreover, when the attachment body 1, the bottom wall member 2, and the front plate 3 are united together, a storage portion (chamber) 5 for incorporating a main member is formed. A solenoid (driving means) 6 having an L-shaped support piece, an engaging nut, an electric wire, a signal line, and the like is incorporated in the storage portion 5 in a vertical state. In this embodiment, the position of the solenoid 6 can be adjusted in the axial direction of the plunger (operating rod) 9 through a vertical long hole 7 provided in the vertical side wall 1a of the mounting body 1, an adjusting bolt 8, and the like.

  Further, on the side opposite to the vertical side wall 1 a of the mounting body 1, a recessed receiving portion 10 is formed so as to protrude. A locking lever 11 is tilted and supported by the receiving portion 10. The inner side of the locking lever 11 is the locking surface of the latch member, while the outer side is the sliding surface of the latch member.

  In addition, the locking lever 11 is pivotally supported on the opening of the mounting body 1 via the shaft 12 so as to be supported by the receiving portion 10 when unlocked. The locking lever 11 has a long plate-shaped locking portion 13 and a pair of upper and lower support arms 14 protruding from both ends of the locking portion. The support arm 14 is pivotally supported by a shaft 12 that is horizontally mounted on the upper and lower side walls of the mounting body 1. The locking lever 11 is always biased to a position where the latch bolt is locked by the spring force of the biasing spring 15 provided on the shaft 12.

  The purpose of the door strike device described above is that the position of the solenoid 6 can be adjusted by the adjusting mechanism (the vertical long hole 7 and the adjusting bolt 8) even when power is not supplied to the solenoid 6. The reason for adjusting the position of the solenoid 6 is when a malfunction of the locking means occurs or when the specification of the solenoid 6 is changed. For example, when a plurality of operating pins constituting the locking means (not shown) are displaced from the fixed guide cylinder, the locking means does not operate.

  Here, with reference to FIG. 21, the structure of the lock | rock means integrated in the attachment body 1 of patent document 1 is demonstrated. FIG. 21 corresponds to FIG. The basic configuration of the door strike device described in Patent Document 2 is the same as that of Patent Document 1. A solenoid 6A is provided in the vertical direction in the housing portion 5A of the case-like attachment 1A.

  In addition, a total of two fixed guide cylinders 16 are spaced apart and extended in the attachment body 1A so as to be located in front of (for example, below) the plunger 9A of the solenoid 6A. These guide cylinders 16 are provided with a total of two operating pins 19 and 21 movably in the axial direction of the plunger 9A.

  Further, reference numeral 17 denotes a lock arm that extends from the bottom of the U-shaped locking lever 11A and can be fitted into the gap 18 of the guide cylinder 16, and the lock arm 17 is provided at the fitting portion (interrupt portion). A movable lock pin 20 is provided.

  Then, when the door is closed, when the locking lever 11A is locking the door side latch bolt, the position of the operation pins 19, 21 including the lock pin 20 is changed by the driving force of the solenoid 6A to the plunger. When the shaft 9 is displaced in the axial direction, at least the lock pin 20 enters the guide tube 16, so the locking lever 11 </ b> A is locked by the lock pin 20.

  In addition, the locking means described in Patent Document 2 includes a solenoid 6A disposed inside the mounting body 1A, a plurality of operating pins 19 and 21 and a locking pin that are aligned in the axial direction inside the mounting body 1A when the door is closed. When the plunger 9A of the solenoid 6A moves linearly during locking, the lock pin 20 is displaced in the axial direction and engages with the fixed guide cylinder 16 on the mounting body 1A side. Therefore, the latch member is locked via the locking lever 11A.

  By the way, the structure of the locking means of patent document 2 is very unclear by those skilled in the art. In particular, when the pin 9 (including the lock pin 20) is moved to a position (unconstrained position) for releasing the lock arm 17 of the locking lever 11A by linear driving of the plunger 9A, the door is opened. When the locking lever 11A rotates outward with the shaft as a fulcrum, the lock pin 20 of the lock arm 17 moves away from the plurality of operating pins 19 and 21 on the attachment body 1A side. At that time, there is a concern that the operating pin 19 moves in the axial direction.

Moreover, if the attachment body 1A is reversed before attaching the door strike device to the door frame, there is a concern that the operating pin 21 may move or drop. Furthermore, even when the specification of the solenoid 6A is changed by an external switching means (for example, when the specification is changed to the unlocked state when energized), the operating pins 19 and 21 on the mounting body 1A side depend on the position of the solenoid 6A. May be displaced, or the operating pin may come off the guide tube 16.
US Pat. No. 6,299,225 U.S. Pat. No. 5,219,196

  The first object of the present invention is to eliminate the problems of Patent Document 2 (preventing movement of the operating pin and preventing falling of the operating pin). The second purpose is that the restricting piece cooperates with the locking lever and reliably replaces the lock pin. The third object is that the lock pin and the operation pin can be accurately displaced to a predetermined position by one operation piece provided at the tip of the operation rod. The fourth purpose is to reduce the number of parts.

  The door strike device of the present invention includes a latch member locking lever that is pivotally supported by the mounting body and has a movable lock pin, driving means disposed inside the mounting body, and a fixed guide cylinder on the mounting body side. When the latch member is engaged with the locking lever when the door is closed, the lock pin is displaced in the axial direction by the linear movement of the operating rod of the driving means, and the locking lever is moved. In the door strike device to be locked, a restricting piece that displaces in conjunction with rotation of the locking lever and prevents movement of the operating pin in the axial direction is disposed inside the mounting body. To do.

  In the above configuration, the restricting piece is pivotally supported by the mounting body so as to be attached to the lock arm of the lock lever, and when the operating pin is restricted, the protruding tip is engaged while being pushed into the lock lever. It is characterized by replacing the lock pin on the stop lever side.

(A) When at least one operating pin is fitted in the fixed guide cylinder on the attachment body side, the above-described problem of Patent Document 2 can be solved.
(B) In the invention according to claim 2, the restricting piece cooperates with the locking lever to reliably replace the lock pin.
(C) In the invention described in claim 3, the lock pin and the operation pin can be accurately displaced to a predetermined position by one frame-like operation piece. In addition, the number of parts can be reduced.
(D) In the invention according to claim 4, the regulating piece can be pushed in reliably.

  Hereinafter, the best mode for carrying out the present invention shown in FIGS. 1 to 18 will be described. In the description of the present embodiment, the same parts as those described in Patent Document 1 and Patent Document 2 are denoted by the same reference numerals for the sake of convenience, and redundant description is omitted. Further, the movable contact piece for the microswitch that extends into the engagement space into which the latch member enters and can come into contact with the latch member is omitted from the drawing.

(1) Environment for carrying out the invention In FIGS. 1 to 18, X is a door strike device, and this door strike device X is fixed to the vertical frame of the door frame 25 as shown in the environment diagram (FIG. 18). Attached to. The door strike device X includes a micro switch, a solenoid, and the like, and is electrically connected to the control means 27 via connection means 26 such as an electric wire cord and a signal line. The control means 27 is provided on the wall surface of the building and processes the input signal of the operation means 28. The door strike device X is engaged with and disengaged from the latch member Y provided at the free end of the door D. Hereinafter, the specific requirements of the present invention will be sequentially described, but the detailed description will be omitted.

(2) Basic Configuration of Door Strike Device X FIG. 1 is a front view of the door strike device X, and FIG. 2 is a rear view of the door strike device X with a cover-like bottom wall member removed.

  As is apparent from the configurations described in Patent Document 1 and Patent Document 2, the door strike device X of the present invention includes a mounting body 1 fixed to a door frame, a pivot pin supported by the mounting body and movable. The latch member locking lever 11 has a drive member 6 disposed inside the attachment body 1 and operating pins 19 and 21 provided on the fixed guide cylinder 16 on the attachment body side. When the latch member Y is engaged with the locking lever 11, the lock pin 20 is moved in the axial direction (in this embodiment, the direction in which the plunger 9 is contracted) by the linear movement of the operating rod 9 of the driving means 6. The displacement lever 11 is displaced to lock the locking lever 11 (precondition).

(3) Characteristic part of the door strike device X The characteristic part (core) of the door strike device X is locked when the locking lever 11 is rotated outward via the latch member Y when the locking lever 11 is unlocked. This is because the restricting piece 31 that displaces in conjunction with the rotation of the lever 11 and prevents the axial movement of the operating pins 19 and 21 is disposed inside the mounting body 1.

  In particular, in the present embodiment, the restriction piece 31 is pivotally supported by a bearing portion 32 formed or provided inside the attachment body 1 and is attached to the lock arm 17 of the locking lever 11. Then, the restriction piece 31 is pushed into the pressing portion of the lock arm 17 when the operating pins 19 and 21 are restricted, so that the protruding tip portion moves to the fixed guide cylinder side, and the locking lever side The lock pin 20 is replaced.

(4) Solenoid 6, operating piece 36
3 and 4 are schematic explanatory views showing the main part of the present invention. FIG. 3 shows the restriction piece 31, while FIG. 4 omits the restriction piece 31 to show the lock pin 20 of the lock arm 17. 3 and 4, the restricting piece 31 is pivotally supported by a bearing portion 32 formed inside the mounting body 1 and attached to the back side of the lock arm 17 of the locking lever 11. Has been.

  First, the solenoid 6 is disposed inside the case-shaped or frame-shaped mounting body 1. In the present embodiment, the base plate 34 fixed to the inner wall surface of the vertical side wall 1 a of the mounting body 1 and the base plate 34 fixed to the base plate 34 and provided vertically in the mounting body 1 via the support pieces 35.

  Next, the plunger 9 expands and contracts in the axial direction. An operation piece 36 having a channel shape in a rear view (a U-shape shown in FIGS. 3 and 4) is fixed to the protruding tip of the plunger 9. The plunger 9 is urged in a protruding direction by an urging means 36 located between the attachment base end portion 36 a of the operating piece 36 and the tip end portion 35 a of the support piece 35. The plunger 9 moves backward against the biasing force of the biasing means 37 when the solenoid 6 is excited (when energized).

  Next, FIGS. 5 and 6 show an example of the operating piece 36. FIG. 5 is a perspective view from the back of the operating piece 36, and FIG. 6 is a left side view based on FIG. The actuating piece 36 is fitted into a notch groove at the protruding tip end portion of the plunger 9 and fixed by a fixing means, and is perpendicular to the mounting base end portion 36a and perpendicular to the mounting body 1. A long plate-shaped guided portion 36b guided by the inner wall surface of the side wall 1a and the base plate 34, a pressing portion 36c for the operating pin 21 orthogonal to the guided portion 36b, and a continuous portion with the pressing portion 36c. The stopper portion 36d is provided.

  The inside of the attachment base end portion 36a has a function of a first pressing portion 38 that presses the operating pin 19 on the plunger 9 side. On the other hand, the inside of the pressing part 36c facing the first pressing part 38 has a function of a second pressing part 39 that presses the operating pin 21 toward the plunger 9 side.

(5) Locking lever 11
7 to 9 are explanatory views showing the locking lever 11. 7 is a perspective view, FIG. 8 is an explanatory view seen from the locking surface side, and FIG. 9 is a sectional view taken along line 9-9 of FIG. The locking lever 11 is the same as the conventional example (the locking lever 11 shown in FIG. 19). Therefore, the latch lever 11 of this embodiment also has a long plate-like latching portion 13 with which the latch member Y engages and disengages, and a bearing (conventional support arm) 14 for the shaft 12.

  Thus, the locking lever 11 of this embodiment is different from that of the conventional example in several points. The first point is that the bearing 14 is formed in the shape of a long column that is connected to the inner end of the locking portion 13 in an orthogonal state.

  As shown in FIG. 8, a notch 42 having a spring accommodating portion 41 for the biasing spring 15 is formed in the axial direction on the back side or the front side of the long columnar bearing 14. The latching lever biasing spring 15 constantly biases the latching lever 11 in a direction in which the latching member engaging space is formed while being wound around the shaft 12.

  The second point is that the lock arm 17 extends forward from one end of the bearing 14 by a predetermined amount, as shown in FIG. A lock pin 20 is incorporated at the tip of the lock arm 17 so as to be movable in the axial direction. As shown in FIG. 4, the lock arm 17 extends so as to fit in the gap 18 of the guide cylinder 16 of the mounting body 1. And the cam part 17a which can push in the control piece 31 is formed in the step base shape in the continuous base end part of the lock arm 17 (new matter).

(6) Restriction piece 31
The restricting piece 31 is pivotally supported inside the attachment body 1 so as to be attached to the lock arm 17 of the locking lever 11, and when restricting the movement of the upper and lower operating pins 19, 21, the base end of the lock arm 17 The protruding tip 54 replaces the locking pin 20 on the locking lever 11 side while being pushed into the cam portion 17a.

  10 to 12 are explanatory diagrams of the regulation piece 31. 10 is a perspective view in which the regulating piece 31 is reversed, FIG. 11 is a plan view based on FIG. 10, and FIG. 12 is a sectional view taken along line 12-12 of FIG. 13 to 15 are explanatory diagrams showing the operation of the restriction piece 31. FIG. Further, FIG. 16 shows a state in which the locking pin 20 on the side of the locking lever 11 has come out of the gap 18 and the protruding tip 54 of the restricting piece 31 has entered (interrupted) in the place where the lock pin 20 has come out (gap 18 in this embodiment). Is shown.

  Now, the regulation piece 31 is a synthetic resin molded product. As shown in FIG. 2, it has a “slightly plus shape” in the rear view. Here, the configuration of the regulating piece 31 will be described with reference to FIG.

  51 is a connecting portion corresponding to the back surface portion, 52 is a shaft portion provided at both ends of the connecting portion 51 and having a pair of small protruding shafts 52a inside, and 53 is a buttocks slightly protruding from the rear end surface of the connecting portion 51 , 54 is a projecting tip portion that is provided in an obtuse angle state from the buttocks 53 and projects like a finger from the tip surface of the connecting portion 51.

  Thus, the shaft portion 52 can be displaced outwardly by the elastic force of the material itself. Further, as shown in FIG. 13, the cam portion 17 a at the base end portion of the lock arm 17 contacts the buttocks 53. As shown in FIGS. 14 and 15, when the locking lever 11 rotates outward, the restricting piece 31 is pushed in by the cam portion 17 a of the lock arm 17. At this time, the restricting piece 31 rotates with the protruding shaft 52a as a fulcrum.

  Further, the inner wall surface 54a of the projecting tip 54 is attached to one side of the lock arm 17 at the initial position, and moves away from one side of the lock arm 17 when the position is displaced (moved). In other words, the restricting piece 31 is put on the back side of the lock arm 17 and cooperates (follows or interlocks) with the lock arm 17 with the protruding shaft 52a as a fulcrum.

(7) Action-Unlocking and Locking FIG. 17 is an explanatory view in which the lock pin 20 of the lock arm 17 is displaced from the unlocked position to the locked position.

  As described above, the U-shaped frame-shaped operating piece 36 is fixedly attached to the distal end portion of the plunger 9, and the first pressing surface that presses the operating pin 19 on the plunger 9 side in the extending direction of the plunger 9. 38 and a second pressing surface 39 that presses the operating pin 21 on one side wall side of the attachment body 1 in the contracting direction of the plunger 9.

  Therefore, when the lock arm 17 of the locking lever 11 is locked (locked), the control means 27 shown in FIG. 18 processes the operation signal of the operation means 28, so that the solenoid 6 is energized. As a result, the plunger 9 contracts (retracts, in the direction of arrow A) against the urging force of the urging means 37. Then, the plurality of operating pins (including the lock pin) 19, 20, and 21 aligned in the axial direction move by a predetermined amount in the direction of the arrow A pressed by the second pressing surface 39 of the operating piece 36. As a result, the lock pin 20 enters one of the guide cylinders 16 so that it is locked. In the unlocked state, the operation mode is reversed.

  In the example (first example) shown in the embodiment of the invention, a total of two actuating pins 19 and 21 are arranged in parallel in the axial direction through the gap 18 in the fixed guide cylinder 16 on the mounting body 1 side. is doing. As shown in FIG. 3, when the door is closed, the lock pin 20 on the side of the locking lever 11 that has entered the gap 18 is aligned with the plurality of operation pins 19 and 21.

  FIG. 19 shows a design change example in which the operating pins 21 are reduced. This is a second embodiment in which the main part of the present invention is changed for convenience. In the second embodiment, since the number of operating pins 21 is reduced, the second pressing portion 39A of the frame-shaped (for example, U-shaped) operating piece 36A is a pressing pin fixed via an unnumbered fixing tool. .

  Therefore, in this second embodiment, the pressing pin-shaped second pressing portion 39A is fitted to the fixed guide tube 16 on the side wall side of the mounting body 1 and is replaced with the operating pin 21 of the first embodiment. . Even if it comprises in this way, the essential matter of this invention does not change. The lock pin 20 on the locking lever 11 side is a magnetic body.

  The present invention is mainly used in the locksmith and joinery industries.

1 to 18 are explanatory views showing the best embodiment of the present invention.
The front view of the door strike device X. The rear view of the door strike apparatus X which removed the bottom wall member. The schematic explanatory drawing which shows the principal part (showing the control piece 31). The schematic explanatory drawing which shows the principal part (omission of the control piece 31). The perspective view from the back surface of the action | operation piece 36. FIG. FIG. 6 is a left side view based on FIG. 5. The perspective view of the latching lever 11. FIG. Explanatory drawing which looked at the locking lever 11 from the locking surface side. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 8. The perspective view which made the regulation piece 31 reverse. The top view on the basis of FIG. 12-12 sectional view taken on the line of FIG. The schematic explanatory drawing of the initial position of a control piece and a lock pin. The schematic explanatory drawing of the middle position of a control piece and a lock pin. The schematic explanatory drawing which the position of the lock pin and the protrusion front-end | tip part of a control piece replaced. The schematic explanatory drawing which showed the state in the case of FIG. 15 in perspective. Schematic explanatory drawing which shows an example of an effect | action (an unlocked state to a locked state). Environmental explanatory diagram. Schematic explanatory drawing which shows the 2nd Example which changed the principal part of this invention. Explanatory drawing of the Example described in patent document 1. FIG. Explanatory drawing of the Example described in patent document 2. FIG.

Explanation of symbols

Y: Latch member, 1 ... Mounting body, 2 ... Bottom wall member, 3 ... Front plate, 5 ... Storage part, 6 ... Driving means, 9 ... Actuator, 11 ... Locking lever, 12 ... Shaft, 13 ... Locking 16, fixed guide tube, 17, lock arm, 17 a, cam portion, 18, gap, 19, operating pin, 20, lock pin, 21, operating pin, 31, restricting piece, 32, bearing portion, 34, Base plate, 35 ... support piece, 36, 36A ... working piece, 37 ... biasing means, 38 ... first pressing part, 39, 39A ... second pressing part, 52 ... shaft part, 53 ... buttocks, 54 ... projecting Tip.

Claims (4)

A latch lever for a latch member that is pivotally supported by the mounting body and has a movable lock pin, driving means disposed inside the mounting body, and an operating pin provided on a fixed guide cylinder on the mounting body side In a door strike device in which the lock pin is displaced in the axial direction by the linear movement of the actuating rod of the driving means when the latch member is engaged with the lock lever when the door is closed. A door strike device characterized in that a restricting piece that displaces in conjunction with the rotation of the locking lever and prevents the movement of the operating pin in the axial direction is disposed inside the mounting body. In Claim 1, the restricting piece is pivotally supported by the mounting body so as to be attached to the lock arm of the lock lever, and when the operating pin is controlled, the protruding tip is pushed into the lock lever. A door strike device that is replaced with a lock pin on the side of the locking lever. In Claim 1, there are at least one actuating pin, and one frame-like actuating piece is fixedly attached to the tip of the plunger, and the actuating pin on the plunger side is connected to the plunger. A door strike device comprising: a first pressing portion that presses in an extending direction; and a second pressing portion that presses an operating pin or a lock pin on one side wall side of the mounting body in a contracting direction of the plunger. 2. The door strike device according to claim 1, wherein a cam portion capable of pushing the restricting piece is formed in a stepped shape at a base end portion of the lock arm of the locking lever.

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