JP2007113332A - Lock device for door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device for a door, which has good assembling workability, by overcoming the problem that the assembling workability is not good, because a locking pin and the like have to be sequentially assembled to an insertion space opened in a case for a lock body. <P>SOLUTION: This lock device comprises: a locking body 3 which regulates the operation of opening a door of a device case in a locking position, and which releases regulation in an unlocking position; and the lock body 8 in which a cam 6 rotatively driven by a cylinder lock 5, and the locking pin 7 driven for translation by the cam 6 and intruding into the locking body 3 so as to restrain the locking body 3 in the locking position are housed in the lock case 4 fixed to the side wall of the device case so as to hold the locking body 3. The locking pin 7 and the cam 6 are fitted by being positioned in a storage recess 9 provided in an opened state in the lock case 4 and opened in a surface to be mounted on the device case; the release of a fitting state is regulated by a cover body for closing the storage recess 9, so that the fitting state can be maintained; and the cam 6 and the cylinder lock 5 are connected in a rotational direction along with the operation of mounting the cylinder 5 on the lock case 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a door locking device.

  As a door locking device for locking the door that closes the opening of the device housing, the one described in Patent Document 1 is known. In this conventional example, the door locking device includes an L-shaped bent arm (lock body) and a lock portion (lock body) that holds the lock body.

The lock body accommodates a cylinder lock, an engagement piston (lock pin) that is driven to translate by the cylinder lock and advances and retreats to the lock body, and a compression spring that biases the lock pin toward the lock body. When the cylinder lock is locked, the lock pin enters the lock body by the urging force of the compression spring and restricts the movement of the lock body. When the cylinder lock is rotated in the unlocking direction from this state, the lock pin retreats against the reaction force of the compression spring, and the restriction on the lock body is released.
Utility Model Registration No. 3026297

  However, the above-described conventional example has a problem that the assembling workability is poor because it is necessary to sequentially assemble a lock pin or the like in an insertion space opened in the case of the lock body.

  The present invention has been made to eliminate the above-described drawbacks, and an object of the present invention is to provide a door locking device with good assembling workability.

According to the present invention, the object is
A lock body 3 for restricting the opening operation of the door 2 of the apparatus housing 1 at the lock position and releasing the restriction at the unlock position;
A lock case 4 fixed to the side wall of the apparatus housing 1 and holding the lock body 3 is driven to rotate by a cylinder lock 5 and translated by a cam 6, and in the lock body 3 at a locked position. A lock body 8 containing a lock pin 7 for entering and restraining the lock body 3 in the lock position;
The lock pin 7 and the cam 6 are opened in the lock case 4 and are positioned and fitted in the housing recess 9 that is opened on the mounting surface to the apparatus housing 1, and the cover body that closes the housing recess 9. 10, the separation of the fitted state is restricted and held,
In addition, the cam 6 and the cylinder lock 5 are achieved by providing a door locking device that is coupled in the rotational direction in accordance with the mounting operation of the cylinder lock 5 to the lock case 4.

  The lock device includes a lock body 3 that restricts the opening operation of the door 2 at the lock position, and a lock body 8 that restrains the lock body 3 at the lock position. The lock body 8 and the lock body 3 need only be able to restrain the lock body 3 when the lock body 3 is in the locked position, and may be separated from each other at the unlocked position, or cannot be separated. It may be a thing. In addition, the lock body 3 adopts an appropriate shape such as a hook shape or a lever shape, and the movement between the lock position and the unlock position is also accompanied by horizontal rotation, vertical rotation, or translation. Various modifications are possible, such as those that add movement.

  The lock body 3 is constrained to the lock position by allowing the lock pin 7 to enter the lock hole 3 a formed in the lock body 3. In order to operate the lock pin 7 from the outside of the lock case 4, a cylinder lock 5 and a cam 6 that is rotationally driven by the cylinder lock 5 are arranged, and the locking and unlocking rotation operation to the cylinder lock 5 is performed by the cam 6. 7 translations.

  The lock pin 7 and the cam 6 are opened in the lock case 4, and are positioned and fitted in an accommodation recess 9 that is opened on the mounting surface to the apparatus housing 1, and a cover body 10 that closes the accommodation recess 9. Dropping is completely prevented in the fixed state.

  Therefore, in the present invention, after the lock pin 7 and the cam 6 are fitted and fitted in the receiving recess 9, the cover body 10 is closed, and the assembly operation is completed simply by inserting the cylinder lock 5. Assembly operability is improved.

  The cam 6 is configured such that the cam surface is brought into contact with the contacted portion of the lock pin 7 to move the lock pin 7 in translation, and the operation relationship between the cam 6 and the lock pin 7 is appropriately determined. For example, when the cam surface of the cam 6 is formed so that the rotational position of the cam 6 and the position of the lock pin 7 completely correspond to each other, when the cam 6 is in the unlocked rotational position, the lock pin 7 is It is fixed at a retracted position from the lock body 3. For this reason, in order to lock the lock body 3 by allowing the lock pin 7 to enter the lock body 3, it is necessary to rotate the cylinder lock 5 in the locking direction.

On the other hand, a compression spring 11 that urges the lock pin 7 in the intrusion direction into the lock body 3 is accommodated in the accommodation recess 9 and
The cam 6 restricts movement in the retracting direction while permitting only the intrusion operation of the lock pin 7 into the lock body 3 by the urging force of the compression spring 11 at the locking rotation position, and at the unlocking rotation position of the compression spring 11. Formed to forcibly move the lock pin 7 to the retracted position from the lock body 3 against the urging force;
In addition, a free angle is set between the cam 6 and the cylinder lock 5 to allow the cam 6 to rotate to an intermediate rotation position between the locking rotation position and the unlocking rotation position when the cylinder lock 5 is locked. When the door locking device is configured, the lock pin 7 can automatically enter the lock body 3 with the movement of the lock body 3 to the lock position, and the usability can be improved.

  That is, the cam 6 is formed in a shape that allows the lock pin 7 to enter the lock hole 3a at the locking rotation position and forcibly moves the lock pin 7 to the retracted position from the lock body 3 at the unlocking rotation position. For this reason, when the cam 6 is in the locking rotation position, the lock pin 7 enters the lock hole 3 a by the urging force of the compression spring 11.

  On the other hand, when the cylinder lock 5 is in the unlocked state, the lock pin 7 is fixed at the retracted position. When the cylinder lock 5 is operated to lock from this state, there is a rotational play angle between the cylinder lock 5 and the cam 6. Since it is set, the cam 6 remains in the intermediate rotation position without being driven to the locking rotation position. The cam 6 driven from the unlocking rotation position to the intermediate rotation position by the cylinder lock 5 has an idling region only in the locking rotation position direction. In this state, when the lock hole 3a of the lock body 3 faces the lock pin 7, that is, when the lock body 3 moves to the lock position, the lock pin whose movement into the lock body 3 is restricted by the general part of the lock body 7 can move to the lock body 3, and at the same time, the cam 6 receives a rotational force from the lock pin 7 and rotates to the locking rotation position.

  Since the cam 6 has a shape that restricts the movement of the lock pin 7 from the lock body 3 to the retracted position at the locking rotation position, the cam 6 imparts striking force to the lock case 4 in the locked state, and the lock pin is driven by inertia. Unauthorized unlocking operation by lowering 7 is completely prevented. Further, by restricting the lowering of the lock pin 7 caused by hitting the lock case 4 by the cam 6, it is not necessary to increase the reaction force of the compression spring 11 until the inertial force can be resisted. The resistance when operating the lock 5 can be reduced, and good operability can be obtained.

  According to the present invention, the lock pin and the cam can be set so as to be fitted in a predetermined position of the lock case, and the cover body can be assembled only by fixing, so that the assembly workability can be improved.

  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 1 so that it can be opened by a door 2.

  The lock device has a lock body 3 held by a lock body 8 fixed to the side wall of the device housing 1. The lock body 3 is formed in an L-shaped hook shape by forming a door restricting portion 12 at one end, and the door restricting portion 12 faces the door 2 as shown in FIGS. 1 (a) and 1 (b). Thus, the opening operation of the door 2 can be restricted (lock position).

  As shown in FIG. 2, the lock body 3 is rotatably and slidably inserted into the hook holding hole 4 a formed in the lock case 4 of the lock body 8, 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 12 is retracted from the opening locus of the door 2 by rotating to enable the door 2 to be opened. (Lock release position).

  Further, a cylinder lock 5 is fixed to the lock body 8 with the key insertion opening 5a facing the front side of the vending machine. By operating the cylinder lock 5 to lock, as shown in FIG. The lock pin 7 in the lock body 8 can enter the lock hole 3 a of the lock body 3. In this state, the lock body 3 cannot move relative to the lock body 8 and is restrained to the lock position.

  3 and 4 show the detailed configuration of the lock body 3. The lock body 3 has a flange main body portion 13 in which a stainless steel rod is bent into an L shape to form a sliding flange portion 13a and a door restricting portion 12. A cap member 12a is screwed to the front end of the door restricting portion 12, and the rear end portion of the sliding collar portion 13a (hereinafter, the door 2 side is fixed in a state where the locking device is fixed to the device housing 1 in this specification). A stopper pin 13b is screwed into the "front"), which restricts the pulling stroke from the lock body 8 of the lock body 3 and prevents inadvertent removal of the lock body 3 from the lock body 8.

  A plurality of screw holes 13c are arranged at a predetermined pitch in the longitudinal direction of the sliding flange 13a in the sliding flange 13a of the flange main body 13, and a cylindrical spacer is formed so as to cover an appropriate number of these screw holes 13c. 14 is fixed. The cylindrical spacer 14 is externally fitted to the sliding flange 13 a and is screwed to the flange main body 13 using a bolt 15.

  The bolt 15 passes through a through hole (not shown) formed in the vicinity of the front end edge of the cylindrical spacer 14 and is screwed into any of the screw holes 13c formed in the sliding flange 13a. As shown in FIG. 3, only the screw hole 13c adjacent to the rear end edge is used as the lock hole 3a in a state where the cylindrical spacer 14 is fixed to the sliding flange 13a, and the other screw holes 13c are used to fix the embedded bolts 15. Use to be blocked.

  As shown in FIG. 4, in the state where the cylindrical spacer 14 is fixed, the distance from the bolt 15 to the lock hole 3a coincides with the distance from the bolt receiving space 4b and the lock pin 7 to be described later. The protruding dimension at the lock position of the lock body 3 is determined by the correspondence with the hole 3a.

  Therefore, in this embodiment, the position of the door restricting portion 12 can be simplified by changing the fixing position of the lock body 8 to the apparatus housing 1 or the fixing position of the cylindrical spacer 14 according to the thickness of the door 2 or the like. Can be positioned at an appropriate position. At this time, since the cylindrical spacer 14 functions as a scale for designating the screw hole 13c to be used as the lock hole 3a, the position determination of the lock hole 3a is simplified.

  The lock body 3 configured as described above is configured by combining an appropriate number of heel main portions 13 having different thicknesses and a cylindrical spacer 14 set for each heel main portion 13. As shown in FIGS. 3B and 3C, the plurality of types of cylindrical spacers 14 are only changed so that the main body portion 13 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 bodies 3 of any combination have the same maximum outer diameter and can be inserted through the same heel holding hole 4a. In addition, in order to use a step corresponding to the thickness of the cylindrical spacer 14 generated by mounting the cylindrical spacer 14 as a stopper in the pushing direction of the lock body 3, A stopper step 4c that contacts the rear end surface of the cylindrical spacer 14 is formed.

  On the other hand, in addition to the lock pin 7 described above, a cam 6, a compression spring 11, and a cylinder lock 5 are disposed in the lock case 4 of the lock body 8. As shown in FIG. 7, the cylinder lock 5 is formed by inserting a rotor 5c into a cylinder case 5b so as to be rotatable. As shown in FIG. 6, the end of the rotor 5 c 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 6. 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. The unlock key for rotating the rotor 5c corresponding to each rotational position can be inserted and removed only when the rotor 5c is in the locked rotational position.

  As shown in FIGS. 5 and 6, the lock pin 7 includes a lock head 7 b that moves forward and backward in the lock hole 3 a of the lock body 3 at the upper end of the center base portion 7 a. A pair of cam receiving bulges 7c are formed on the front surface of the central base 7a so as to sandwich a cam projection 6a of the cam 6 described later from above and below, and an inclined surface is formed at one end of the horizontal portion by the upper cam receiving bulging 7c. The upper cam receiving surface 7d is formed. Further, the lower cam receiving bulge portion 7c forms a lower cam receiving surface 7e formed of a horizontal plane.

  The compression spring 11 is inserted into a spring accommodation hole 7f formed in the lower end surface of the center base portion 7a of the lock pin 7 and accommodated in an accommodation recess 9 of the lock case 4 described later. Is biased upward, that is, in a direction in which the locking head 7b enters the lock hole 3a of the lock body 3.

  The cam 6 is formed by bulging the cam projection 6a on the back surface of the disc portion 6b, and a rotor fitting hole 6c that fits outside the rotor 5c of the cylinder lock 5 is formed in a through hole shape at the center. Is done. The cam protrusion 6a is provided with a pin movement prevention protrusion 6d that protrudes sideways in a square shape, and the cam 6 has a locking rotation position where the pin movement prevention protrusion 6d faces upward as shown in FIG. 6 (a). 6 (b) and 6 (c), the pin movement prevention protrusion 6d is rotationally driven between the unlocking rotation position facing sideways. The upper cam receiving surface 7d of the lock pin 7 is formed so that the horizontal portion faces the pin movement preventing protrusion 6d when the cam 6 is in the locking rotation position.

  Further, between the rotor fitting hole 6c of the cam 6 and the rotor 5c, as shown in FIG. 6D, when the rotor 5c is in the locking rotation position, the cam 6 is in the locking rotation position and the unlocking rotation position. The play angle in the rotational direction is set so that the intermediate position can be taken. As a result, when the rotor 5c is rotated from the unlocking rotation position shown in FIG. 6 (b) to the locking rotation position shown in FIG. 6 (d), the rotor 5c idles within the range of the rotation direction free angle. As shown in 6 (c), in order to start driving the cam 6, the cam 6 is driven only to the intermediate rotational position.

  Therefore, in this embodiment, as shown in FIG. 6A, when the rotor 5c is in the locking rotation position, the lower cam receiving surface 7e of the lock pin 7 biased upward by the compression spring 11 is the cam projection. 6a abuts. In this state, the lock head 7b enters the lock hole 3a of the lock body 3, and the rotation of the lock body 3 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 4 and the lock pin 7 tries to move downward due to the inertial force, the pin movement preventing projection 6d restricts the lowering of the upper cam receiving surface 7d. To do.

  When the cylinder lock 5 is operated from the locked state to rotate the rotor 5c to the unlocked rotation position, the cam projection 6a pushes down the lower cam receiving surface 7e of the lock pin 7 as shown in FIG. 7 descends to a position where the lock head 7b is retracted from the lock hole 3a. Since the restraint on the lock body 3 is released in this state, the lock body 3 is pulled out as shown in FIGS. 6C and 1C, and further, as shown in FIG. The lock body 3 can be rotated to shift to the unlock position.

  When the lock body 3 is pulled out, as shown in FIG. 6D, when the rotor 5c is returned to the locking rotation position and the unlocking key is removed, the cam 6 is driven to the intermediate rotation position. In this state, the lock pin 7 is restricted in the upward movement by the lock body 3 and remains in the unlocked position, and when the lock body 3 is moved to the lock position, that is, the position where the lock hole 3 a faces the lock pin 7. The lock pin 7 that has lost its support returns to the locked position by the restoring force of the compression spring 11. At this time, the cam projection 6a comes into contact with the lower cam receiving surface 7e of the lock pin 7, and the cam 6 rotates to the locking rotation position shown in FIG. 6 (a). Thereafter, the lock release by applying the impact to the lock case 4 is released. To prevent.

  An accommodating recess 9 is formed in the lock case 4 so that the lock pin 7, the compression spring 11, and the cam 6 can be efficiently assembled. As shown in FIG. 5, the housing recess 9 is composed of a cam housing recess 9a and a pin housing recess 9b, and is recessed in the fixing surface to the apparatus housing 1. The cam 6 is a peripheral wall of the disk portion 6b. Is positioned and fitted in the cam housing recess 9a that can be temporarily held over almost a half circumference. Further, the lock pin 7 in a state where the compression spring 11 is inserted is fitted to the side wall of the pin housing recess 9b so that the lock pin 7 is movable up and down.

  A cover body 10 closes the housing recess 9 and is formed of a metal plate material. The cover body 10 is folded back with the pressing pieces 10 a and 10 b for pressing the cam receiving bulging portion 7 c of the lock pin 7 and the disc portion 6 b of the cam 6 in a fixed state to the lock case 4.

  Therefore, in this embodiment, the lock pin 7, the compression spring 11, and the cam 6 are sequentially fitted and held in the receiving recess 9 formed in the lock case 4, and then the cover body 10 is simply screwed and fixed. Since it can be assembled in the case 4, high assembly workability can be expected.

  Further, a cylinder housing hole 4 d is opened in the lock case 4 to hold the cylinder lock 5. As shown in FIG. 7, the cylinder accommodation hole 4 d is arranged in parallel to the flange holding hole 4 a and one end is opened to the front wall of the lock case 4. The adapter 16 is fitted and fixed to the cylinder lock 5 accommodated in the cylinder accommodation hole 4d. When the cylinder lock 5 to which the adapter 16 is fixed in advance is inserted into the cylinder accommodation hole 4d, the end of the rotor 5c of the cylinder lock 5 is The cams 6 are fitted in the rotor fitting holes 6c, and both are connected in the rotational direction.

  In order to prevent the cylinder lock 5 from being removed, a stopper plate 17 is disposed in the lock case 4. As shown in FIG. 7B, the stopper plate 17 is attached to the lock case 4 with a notch 17a that can be fitted to the outer peripheral wall of the cylinder case 5b from above at the lower end edge. The stopper plate 17 is movable up and down slightly in front of the front end surface of the adapter 16 in the cylinder housing hole 4d. At the end of the downward movement stroke, the stopper plate 17 interferes with the front end surface of the adapter 16 to move the adapter 16 forward. As a result, the removal of the cylinder lock 5 from the cylinder accommodation hole 4d is restricted. When the stopper plate 17 is moved upward, the stopper 16 is retracted from the moving path of the adapter 16 and the cylinder lock 5 can be removed. In order to drive the stopper plate 17 in the vertical direction, the stopper plate 17 is provided with an operation hole 17b.

  Reference numeral 18 denotes a shielding plate for covering the stopper plate 17 and is screwed to a fastening surface formed on the lock case 4 using a lock fixing screw 19. The lock fixing screw 19 is mounted in a horizontal position and a screw head can be shielded by the bolt 15 of the lock body 3. As shown in FIG. 8A, the lock body 3 is housed in a bolt housing space 4b set in front of the head of the lock fixing screw 19 in the locked position and shields the screw head. At the same time, the head of the bolt 15 faces the cylinder case 5b in the bolt receiving space 4b and cannot be loosened from the outside.

  Therefore, in this embodiment, when the lock body 3 is in the lock position, the cylinder lock 5 cannot be taken out. On the other hand, when the lock body 3 is moved to the lock release position, FIG. Thus, the head of the lock fixing screw 19 appears outside. When the lock fixing screw 19 is removed in this state and the shielding plate 18 is also removed, the stopper plate 17 appears, and then the cylinder lock 5 can be removed by operating the operation hole to move the stopper plate 17 upward. Furthermore, the cylinder lock 5 corresponding to a different unlock key can be exchanged.

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 body ahead (D) is a front view which shows the state which moved the lock body 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 body, (a) is a bottom view, (b) is a figure which shows the state which fixed the cylindrical spacer in the different position of the main part of a collar with different thickness, (c) is 3C of (b) FIG. 4A and 4B are views showing a state in which lock bodies using different heel main portions are mounted on the same lock case, wherein FIG. 4A is a cross-sectional view taken along line 4A-4A of 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 body exists in a lock release position. 8B-8B line sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus housing 2 Door 3 Lock body 4 Lock case 5 Cylinder lock 6 Cam 7 Lock pin 8 Lock body 9 Housing recessed part 10 Cover body 11 Compression spring 12 Door control part

Claims (3)

A lock body that restricts the opening operation of the door of the device housing at the lock position and releases the restriction at the unlock position;
A lock case that is fixed to the side wall of the device housing and holds the lock body, a cam that is rotationally driven by a cylinder lock, and a translation drive that is driven by the cam, enters the lock body at the lock position, and locks the lock body. And a lock body containing a lock pin to be bound to
The lock pin and the cam are opened in the lock case and are positioned and fitted in the receiving recess opened on the mounting surface to the apparatus housing, and the fitted state is released by the cover body closing the receiving recess. Regulated and retained,
In addition, the cam and the cylinder lock are door locking devices that are coupled in the rotation direction in accordance with the mounting operation of the cylinder lock to the lock case. The accommodation recess contains a compression spring that urges the lock pin in the direction of entering the lock body,
The cam restricts movement in the retracting direction by allowing only the lock pin to enter the lock body by the urging force of the compression spring at the locking rotation position, and resists the urging force of the compression spring at the unlocking rotation position. The lock pin is forcibly moved to the retracted position from the lock body,
2. An idle angle is set between the cam and the cylinder lock to allow the cam to rotate to an intermediate rotation position between the locking rotation position and the unlocking rotation position in the locked state of the cylinder lock. Door locking device. The lock body has a door restricting portion at the tip, is formed in an L-shaped hook shape, and is rotatably held by the lock body.
The door locking device according to claim 1 or 2, wherein the door restricting portion is caused to interfere with an opening locus of the door at the lock position to restrict the door opening operation.

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