JP2007113330A - Lock device for door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device for a door, capable of selecting a combination of a cost and destruction-resistant performance optimum for the use environment. <P>SOLUTION: This lock device comprises: a locking rod 4 which is formed like an L-shaped rod by providing one end with a door regulating part 1, and which regulates an opening operation of the door 3 by making the regulating part 1 interfere with the opening locus of the door 3 of a device case 2 in a locking position; and a lock body 7 which is fixed to the side wall of the device case 2, and which locks the locking rod 4 in the locking position by making a locking piece 6 intrude into the locking rod 4 held in a rod holding hole 5 in a locked state. The locking rod 4 comprises an L-shaped rod body part 8, and a tubular spacer 9 which is replaceably fixed to a part corresponding to the hole 5 of the body part 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a door locking device.

  As a door locking device using a steel rod as a lock rod in order to improve the fracture resistance, the one described in Patent Document 1 is known. In this conventional example, the door locking device includes an arm member (lock rod) bent in an L shape and an auxiliary lock body (lock body) that holds the lock rod.

The lock rod has a rectangular cross-sectional shape except for the rear end portion, and the bent tip portion faces the door in the locked state, and the opening operation to the door is prohibited. In the locked state, the lock rod is prohibited from rotating because the rectangular cross-section corresponds to the rectangular through-hole of the lock body, and when the circular cross-section of the rear end corresponds to the lock body in the pulled-out state, It can be retreated from the position of interference with the door.
Japanese Patent Laid-Open No. 9-317282

  For door lock devices that use lock scissors, the security performance is almost determined by the cross-sectional area of the lock scissors, and using a lock scissors with a large cross-sectional area will increase the security performance because it will take longer to cut. Can be made. On the other hand, the cross-sectional area of the lock rod has a great influence on the manufacturing cost, and the manufacturing cost increases as the cross-sectional area increases. From these, it is desirable that the thickness of the lock rod is appropriately selected and used depending on the required fracture resistance.

  However, in the above-described conventional example, the lock case insertion hole on the lock case side has a one-to-one correspondence with the thickness of the lock case. There is a problem that a new setting is required.

  The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide a door locking device that can select a combination of fracture resistance and cost optimal for a use environment.

According to the present invention, the object is
A lock rod that has a door restricting portion 1 at one end and is formed in an L-shaped hook shape, and restricts the opening operation of the door 3 by causing the door restricting portion 1 to interfere with the opening locus of the door 3 of the device housing 2 at the lock position. 4 and
A lock body 7 that is fixed to the side wall of the device housing 2 and that locks the lock rod 4 into the lock position by allowing the lock piece 6 to enter the lock rod 4 held in the rod holding hole 5 in the locked state;
The lock rod 4 is
An L-shaped ridge main portion 8;
A cylindrical spacer 9 that is fixed to the heel holding hole 5 of the heel main body 8 in a replaceable manner;
This is achieved by providing a door locking device having

  The lock device has a lock body 7 fixed to the side wall of the device housing 2 of a vending machine or the like, and a lock rod 4 held in the rod holding hole 5 of the lock body 7, and is formed at the tip of the lock rod 4. The opening operation to the door 3 is restricted by positioning the door restricting portion 1 to be in front of the door 3.

  The lock rod 4 is desirably formed of a material having excellent cutting resistance, such as stainless steel, for the purpose of improving the resistance to the breaking operation, particularly the breaking using a cutting tool. The fracture resistance of the lock rod 4 is almost determined by the cross-sectional area of the lock rod 4, and the cross-sectional area affects the manufacturing cost. It is desirable to set multiple specifications with different areas.

  On the other hand, a method of bending a rod-shaped solid long material is suitable for manufacturing the lock rod 4 having a hook shape, but the cross-sectional shape of the lock rod 4 employing such a manufacturing method is almost the same over the entire length. It becomes a shape. When a plurality of types of lock rods 4 are set by such a construction method, it is necessary to set a lock device having a rod holding hole 5 corresponding to the cross-sectional shape of the lock rod 4, particularly the cross-sectional thickness, for each lock rod 4. Arise.

  In the present invention in which the cylindrical spacer 9 is fixed to the rod main body portion 8 made of a rod and the lock rod 4 is configured, the cross-sectional area varies depending on the installation conditions, for example, it is thin for indoor use and thick for outdoor use. Even when the heel main portion 8 is used, the gap between the lock body 7 and the heel holding hole 5 can be filled with the cylindrical spacer 9. As a result, it is possible to prepare lock devices of various specifications without changing the lock body 7.

  Further, when the lock rod 4 is configured to be slidable in the depth direction of the apparatus housing 2, the cylindrical spacer 9 can be used as an end regulating member for the pushing side stroke.

  When the lock rod 4 is slidable in the depth direction, the striking force in the pushing direction can be easily realized by hitting the front end of the lock rod 4 with a hammer or the like. When the lock piece 6 is inserted into the lock piece 6, the load on the lock piece 6 becomes excessive, and the lock body 7 can be easily broken. On the other hand, if the cylindrical spacer 9 is brought into contact with the stopper step 10 in the rod holding hole 5 to end one stroke, a load is applied to the lock piece 6 even when the above-described unauthorized operation is performed. Therefore, the breaking resistance of the lock device is improved.

  According to the present invention, it is possible to set the lock rod having the optimum thickness for the use environment without newly setting the lock case.

  An embodiment of the present invention configured as a vending machine locking device is shown below in FIG. As shown in FIG. 1, the vending machine is formed by closing the front opening of the apparatus housing 2 so that it can be opened by a door 3.

  The lock device has a lock rod 4 held by a lock body 7 fixed to the side wall of the device housing 2. The lock rod 4 is formed in an L-shaped rod shape by forming the door restricting portion 1 at one end, and the door restricting portion 1 faces the door 3 as shown in FIGS. 1 (a) and 1 (b). Thus, the opening operation of the door 3 can be restricted (lock position).

  As shown in FIG. 2, the lock hook 4 is rotatably and slidably inserted into the hook holding hole 5 formed in the lock case 7a of the lock body 7, as shown in FIG. First, after pulling out from the lock position to the front side, as shown in FIG. 1 (d), the door restricting portion 1 is retracted from the opening locus of the door 3 by rotating to enable the door 3 to be opened. (Lock release position).

  In addition, a cylinder lock 12 is fixed to the lock body 7 with the key insertion opening 11 facing the front side of the vending machine. By operating the cylinder lock 12 to lock, as shown in FIG. The lock piece 6 in the lock body 7 can enter the lock hole 4 a of the lock rod 4. In this state, the lock rod 4 cannot move relative to the lock body 7 and is restrained to the lock position.

  2, 3 and 4 show the detailed structure of the lock rod 4. FIG. The lock rod 4 has a rod main body portion 8 formed by bending a stainless steel rod into an L shape to form a sliding rod portion 8a and a door restricting portion 1. The cap member 1a is screwed to the front end of the door restricting portion 1, and the rear end portion of the sliding flange portion 8a (hereinafter, the door 3 side is fixed in a state where the locking device is fixed to the device housing 2 in this specification). Stopper pin 8b is screwed into “front”), which restricts the stroke of the lock rod 4 from the lock body 7 and prevents inadvertent removal of the lock rod 4 from the lock body 7.

  A plurality of screw holes 8c are arranged at a predetermined pitch in the longitudinal direction of the sliding flange 8a in the sliding flange 8a of the flange main body 8, and a cylindrical spacer is provided so as to cover an appropriate number of these screw holes 8c. 9 is fixed. The cylindrical spacer 9 is externally fitted to the sliding flange portion 8a and is screwed to the flange main body portion 8 using a bolt that functions as a screw cover portion 14 described later.

  The bolt 14 passes through a through hole (not shown) formed in the vicinity of the front end edge of the cylindrical spacer 9 and is screwed into any of the screw holes 8c formed in the sliding flange portion 8a. As shown in FIG. 3, with the cylindrical spacer 9 fixed to the sliding flange 8a, only the screw hole 8c adjacent to the rear end edge is used as the lock hole 4a, and other screw holes use embedded bolts 8d. And is blocked.

  As shown in FIG. 4, in the state where the cylindrical spacer 9 is fixed, the distance from the bolt 14 to the lock hole 4 a coincides with the distance from the cover housing space 15 and the lock piece 6, which will be described later. The protruding dimension at the lock position of the lock rod 4 is determined by the corresponding relationship with the lock hole 4a.

  Therefore, in this embodiment, the position of the door restricting portion 1 can be simplified by changing the fixing position of the lock body 7 to the apparatus housing 2 or the fixing position of the cylindrical spacer 9 according to the thickness of the door 3 or the like. Can be positioned at an appropriate position. At this time, since the cylindrical spacer 9 functions as a scale for designating the screw hole 8c to be used as the lock hole 4a, the position determination of the lock hole 4a is simplified.

  The lock rod 4 configured as described above is configured by combining an appropriate number of types of rod main portions 8 having different thicknesses and cylindrical spacers 9 set for the respective rod main portions 8. As shown in FIGS. 3B and 3C, the plurality of types of cylindrical spacers 9 are only changed so that the main body portion 8 corresponding to the inner diameter dimension can be inserted, and the outer diameter, the length, and the through hole are changed. The positions and the like are formed the same. As a result, as shown in FIG. 4, the lock rods 4 of any combination have the same maximum outer diameter and can be inserted into the same rod holding hole 5. In addition, in order to use a step corresponding to the thickness of the cylindrical spacer 9 generated by mounting the cylindrical spacer 9 as a stopper in the pushing direction of the lock rod 4, the lock holding hole 5 side of the lock case 7a A stopper step 10 is formed in contact with the rear end surface of the cylindrical spacer 9.

  On the other hand, in addition to the lock piece 6 described above, a cam 16, a compression spring 17, and a cylinder lock 12 are disposed in the lock case 7 a of the lock body 7. As shown in FIG. 7, the cylinder lock 12 is formed by inserting a rotor 12b into a cylinder case 12a so as to be rotatable. As shown in FIG. 6, the rear end portion of the rotor 12 b has a small judgment surface shape obtained by cutting the cylindrical side wall with two parallel surfaces so that the rotational force can be transmitted to the cam 16. In this embodiment, as shown in FIG. 6 (a), the state where the parallel plane is in the horizontal posture is in the locking rotation position, and as shown in FIG. 6 (b), the state in the vertical posture is unlocked. An unlock key (not shown) corresponding to each rotational position and for rotating the rotor 12b can be inserted and removed only when the rotor 12b is in the locked rotational position.

  As shown in FIGS. 5 and 6, the lock piece 6 includes a lock head 6 b that moves forward and backward in the lock hole 4 a of the lock rod 4 at the upper end of the center base portion 6 a. A pair of cam receiving bulges 6c and 6c are formed on the front surface of the center base 6a so as to sandwich a cam projection 16a of a cam 16 described later from above and below, and an inclined portion is formed at one end of the horizontal part by the upper cam receiving bulging 6c. An upper cam receiving surface 6d is formed. Further, the lower cam receiving bulging portion 6c forms a lower cam receiving surface 6e formed of a horizontal plane.

  The compression spring 17 is inserted into a spring accommodation hole 17a formed in the lower end surface of the center base portion 6a of the lock piece 6 and accommodated in an accommodation recess 18 of a lock case 7a described later. Is pushed upward, that is, in a direction in which the locking head 6b enters the lock hole 4a of the lock rod 4.

  The cam 16 is formed by bulging the cam projection 16a on the back surface of the disk portion 16d, and a rotor fitting hole 16b that fits outside the rotor 12b of the cylinder lock 12 is formed through the center. The cam protrusion 16a is provided with a pin movement prevention protrusion 16c that protrudes sideways in a rectangular shape, and the cam 16 is a locking rotation position where the pin movement prevention protrusion 16c faces upward as shown in FIG. 6 (a). 6 (b) and 6 (c), the pin movement preventing protrusion 16c is rotationally driven between the unlocking rotation position facing sideways. The upper cam receiving surface 6d of the lock piece 6 is shaped so that the horizontal portion faces the pin movement preventing projection 16c when the cam 16 is in the locking rotation position. Further, the rotor fitting hole 16b of the cam 16 and the rotor As shown in FIG. 6D, the rotation direction is such that the cam 16 can take an intermediate position between the locking rotation position and the unlocking rotation position when the rotor 12b is in the locking rotation position. A play angle is set. As a result, when the rotor 12b is rotated from the unlocking rotation position shown in FIG. 6 (b) to the locking rotation position shown in FIG. 6 (d), the rotor 12b is idled within the range of the rotation direction free angle. As shown in FIG. 6C, in order to start driving the cam 16, the cam 16 is driven only to the intermediate rotational position.

  Therefore, in this embodiment, as shown in FIG. 6 (a), when the rotor 12b is in the locking rotation position, the lower cam receiving surface 6e of the lock piece 6 biased upward by the compression spring 17 is the cam protrusion. 16a abuts. In this state, the lock head 6b enters the lock hole 4a of the lock rod 4, and the rotation of the lock rod 4 and movement in the sliding direction are restricted. Further, in this state, when a striking force is applied to the upper surface of the lock case 7a and the lock piece 6 tries to move downward due to the inertial force, the pin movement preventing protrusion 16c restricts the lowering of the upper cam receiving surface 6d. To do.

  When the cylinder lock 12 is operated from the locked state to rotate the rotor 12b to the unlocking rotation position, the cam projection 16a pushes down the lower cam receiving surface 6e of the lock piece 6 as shown in FIG. 6 descends to a position where the lock head 6b is retracted from the lock hole 4a. Since the restraint on the lock rod 4 is released in this state, the lock rod 4 is pulled out as shown in FIGS. 6 (c) and 1 (c), and further, as shown in FIG. 1 (d). The lock rod 4 can be rotated to shift to the unlocked position.

  When the lock rod 4 is pulled out, as shown in FIG. 6D, when the rotor 12b is returned to the locking rotation position and the unlocking key is removed, the cam 16 is driven to the intermediate rotation position. In this state, the lock piece 6 is restricted from moving upward by the lock rod 4 and remains in the unlocked position, and when the lock rod 4 is moved to the lock position, that is, the position where the lock hole 4a faces the lock piece 6 from now on. The lock piece 6 that has lost its support returns to the locked position by the restoring force of the compression spring 17. At this time, the cam projection 16a comes into contact with the upper cam receiving surface 6d of the lock piece 6, and the cam 16 rotates to the locking rotation position shown in FIG. 6 (a). Thereafter, the lock release by applying the impact to the lock case 7a is released. To prevent.

  An accommodation recess 18 is formed in the lock case 7a so that the lock piece 6, the compression spring 17, and the cam 16 can be assembled efficiently. As shown in FIG. 5, the housing recess 18 is recessed in the surface fixed to the apparatus housing 2, and the cam 16 can be temporarily held on the peripheral wall of the disk portion 16 d almost half way. It is positioned and fitted inside. Further, in order to position and fit the lock piece 6, the housing recess 18 includes a pin housing recess 18 b, and the side wall of the lock piece 6 with the compression spring 17 inserted is guided by the side wall of the pin housing recess 18. Fits up and down.

  A cover body 19 closes the housing recess 18 and is formed of a metal plate material. In the cover body 19, the cam receiving bulging portion 6c of the lock piece 6 and the pressing pieces 19a, 19b for pressing the disc portion 16d of the cam 16 are folded back in a fixed state to the lock case 7a.

  Therefore, in this embodiment, the lock piece 6, the compression spring 17, and the cam 16 are sequentially fitted and held in the receiving recess 18 provided in the lock case 7a, and then the cover body 19 is screwed and fixed. Since it can be assembled in the case 7a, high assembly workability can be expected.

  Further, a cylinder housing hole 7b is formed in the lock case 7a to hold the cylinder lock 12. As shown in FIG. 7, the cylinder accommodation hole 7b is arrange | positioned in parallel with the collar holding hole 5, and one end is open | released by the front wall of the lock case 7a. The adapter 20 is fitted and fixed to the cylinder lock 12 accommodated in the cylinder accommodation hole 7b. When the cylinder lock 12 to which the adapter 20 is fixed in advance is inserted into the cylinder accommodation hole 7b, the end of the rotor 12b of the cylinder lock 12 is The cams 16 are fitted into the rotor fitting holes 16b, and both are connected in the rotational direction.

  In order to prevent the cylinder lock 12 from being removed, a stopper plate 21 is disposed in the lock case 7a. As shown in FIG. 7B, the stopper plate 21 is attached to the lock case 7a with a notch 21a fitted to the outer peripheral wall of the cylinder case 12a from above at the lower end edge. The stopper plate 21 is movable up and down slightly in front of the front end surface of the adapter 20 in the cylinder housing hole 7b. At the end of the downward movement stroke, the stopper plate 21 interferes with the front end surface of the adapter 20 and moves forward of the adapter 20. As a result, the removal of the cylinder lock 12 from the cylinder accommodation hole 7b is restricted. Further, when the stopper plate 21 is moved upward, it is retracted from the moving path of the adapter 20 and the cylinder lock 12 can be removed. In order to drive the stopper plate 21 in the vertical direction, the stopper plate 21 is provided with an operation hole 21b.

  Reference numeral 22 denotes a shielding plate for covering the stopper plate 21, and is screwed to the fastening surface formed on the lock case 7 a using the lock fixing screw 13. The lock fixing screw 13 is mounted in a horizontal position and a screw head can be shielded by the bolt 14 of the lock rod 4. As shown in FIG. 8A, the lock rod 4 is housed in a cover portion accommodation space 15 set in front of the head portion of the lock fixing screw 13 in the lock position, thereby shielding the screw head portion. At the same time, the head of the bolt 14 faces the cylinder case 12a directly in the cover housing space 15, and cannot be loosened from the outside.

  Therefore, in this embodiment, when the lock rod 4 is in the lock position, the cylinder lock 12 cannot be taken out, but when the lock rod 4 is moved to the unlock position, FIG. Thus, the head of the lock fixing screw 13 appears outside. When the lock fixing screw 13 is removed in this state and the shielding plate 22 is also removed, the stopper plate 21 appears, and then the cylinder lock 12 can be removed by operating the operation hole 21b and moving the stopper plate 21 upward. Furthermore, the cylinder lock 12 corresponding to a different unlock key can be exchanged.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows this invention, (a) is a top view which shows the state fixed to the apparatus housing | casing of a vending machine, (b) is a front view of (a), (c) is the state which pulled out the lock rod forward (D) is a front view which shows the state which moved the lock rod to the lock release position. FIG. 2B is a sectional view taken along line 2A-2A in FIG. It is a figure which shows a lock hook, (a) is a bottom view, (b) is a figure which shows the state which fixed the cylindrical spacer in the different position of the hook main part from which thickness differs, (c) is 3C of (b). FIG. 4A and 4B are views showing a state where lock rivets using different heel main portions are attached to the same lock case, wherein FIG. 4A is a cross-sectional view taken along line 4A-4A in FIG. ) Is a cross-sectional view taken along line 4A-4A of FIG. It is a figure which shows the assembly method of a lock main body, (a) is the exploded view which looked at the lock case from the fixed surface side to an apparatus housing | casing, (b) is the direction which cut | disconnected the lock case along the 5B line of (a) It is the exploded view seen from. 4A and 4B are views showing the operation of the lock body, in which FIG. 2A is a cross-sectional view taken along line 4A-4A in FIG. 2 in a locked state, FIG. 2B is a cross-sectional view taken along line 4A-4A in FIG. 2 is a cross-sectional view taken along the line 4A-4A in FIG. 2 in a state of being rotated to the locking rotation position side, and FIG. 4D is a cross-sectional view taken along the line 4A-4A in FIG. It is a figure which shows the assembly | attachment of a cylinder lock, (a) is the exploded view shown from the direction which cut | disconnected the lock case along the 2A-2A line | wire of FIG. 1, (b) is a front view of a stopper plate. It is a figure which shows the replacement | exchange method of a cylinder lock, (a) is a front view which shows the state in which the lock fixing screw is shielded by the screw cover part, (b) is FIG. 1 (a) when a lock rod is in an unlocking position. 8B-8B line sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door control part 2 Apparatus housing 3 Door 4 Lock 杆 5 杆 Holding hole 6 Lock piece 7 Lock body 8 杆 Main part 9 Cylindrical spacer 10 Stopper step 11 Key insertion opening 12 Cylinder lock 13 Lock fixing screw 14 Screw cover part

Claims (3)

A lock rod that has a door restricting portion at one end and is formed in an L-shaped hook shape, and interferes with the opening locus of the door of the device housing at the lock position to restrict the door opening operation;
A lock body that is fixed to the side wall of the apparatus housing and that locks the lock rod into the lock position by allowing the lock piece to enter the lock rod retained in the retaining hole in the locked state;
The lock rod is
An L-shaped ridge main body;
A cylindrical spacer fixed to the heel holding hole corresponding portion of the heel main body in a replaceable manner;
A locking device for doors. The lock rod is slidable in the depth direction of the device casing,
The door locking device according to claim 1, wherein the hook holding hole is provided with a stopper step that contacts a longitudinal end surface of the cylindrical spacer and restricts a pushing side stroke of the lock hook. A cylinder lock mounted on the lock body with the key insertion opening facing the surface perpendicular to the sliding direction of the lock rod;
A lock fixing screw that is fixed so as to be able to be released and fixed in a state where the lock body is fixed to the apparatus housing, and that prevents the cylinder lock from dropping in the fixed state;
A screw cover that is provided on the lock rod, shields the head of the lock fixing screw when the lock rod is in the lock position, and releases the shield at the lock release position;
The door locking device according to claim 2.

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