JP2011058164A - Door lock mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensively-constituted door lock mechanism. <P>SOLUTION: When a key cylinder 3 is turned by inserting a key into an insertion opening in the state of closing a door 2, a coupling link 26 is lifted to push up a stud 18 by downsides of two insertion holes 26a and 26b. When a first lock bracket 10 and a second bracket 16 are unfitted from each other, the first lock bracket 10 releases door lock posts 7a and 7b from a locking groove 10a, and unlocks the door 2 so as to make it openable. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a door lock mechanism for locking doors of various cassettes such as a replenishment collection cassette and a bill storage cassette loaded in an automatic transaction apparatus.

  When the door lock mechanism provided on the door of the cassette loaded in the conventional automatic teller machine is energized, the solenoid is operated by operating a predetermined switch to unlock the door, and the interlocking link is The door is opened by moving the lock bracket to release the engagement of the door and manually moving the lock release lever (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 10-280750 (paragraph “0013”, FIG. 5)

  However, in the above-described prior art, since the solenoid is used, the door lock mechanism provided in the cassette is expensive, and there is a problem that it is expensive to mount.

  Therefore, it is expected to realize a door lock mechanism having a lower cost.

  An object of the present invention is to provide means for solving the above problems.

  In order to solve the above problems, the present invention is provided in a housing having a door that opens and closes by rotation, a key cylinder provided with a key insertion port, and two upper and lower lock posts provided on the back side of the door. The upper and lower insertion holes have a connecting link provided on the casing so as to rise and slide with the rotation of the key cylinder, and the casing to correspond to the two lock posts. If two lockable rotation grooves are provided, each having a locking groove into which the lock post is fitted, the first lock bracket and the two first lock brackets can be fitted to the housing so that the two can be fitted. A second locking bracket having studs inserted through the insertion holes, first biasing means for biasing the first locking bracket to rotate upward, and a front Second urging means for urging the second lock bracket to rotate downward is provided, wherein the longitudinal length is the same as the diameter of the stud, and the lateral length is the movement of the stud. When the size of each insertion hole is determined so that the length is not hindered, and the key cylinder is rotated with the door closed, the connecting link rises and the studs are moved by the lower sides of the two insertion holes. Pushing up, releasing the lock between the first lock bracket and the second lock bracket and releasing the lock post from the locking groove so that the door can be opened. When the door is closed and the key cylinder is locked, when the lock post does not enter the locking groove of one of the first lock brackets, the second lock bracket The second lock bracket to the other first lock bracket having the lock post inserted into the locking groove while the upper side of the insertion hole abuts against the stud of the G The door locking mechanism is characterized in that the door is prevented from being locked by preventing the fitting of the door.

  As a result, the present invention locks and unlocks the door with a key without using a solenoid, so that the door lock mechanism can be realized at low cost.

  Also, if you do not lock the door side studs with all the lock mechanism parts of the mechanism, the key inserted in the key cylinder insertion port will not come off, so you can prevent the mistake of forgetting to lock the door, The effect that it can prevent that a banknote is extracted illegally is acquired.

Schematic perspective view of the cassette of Example 1 The schematic perspective view of the state which the door of the cassette of Example 1 opened Top view showing the door Schematic perspective view of the door from the back side Schematic perspective view showing the configuration of the lock mechanism Schematic side view showing the position of each part of the lock mechanism Schematic perspective view showing the door lock post locked by the lock mechanism Schematic perspective view showing the key cylinder Schematic side view showing the door closed Schematic side view showing the state when the door is opened Explanatory drawing showing the door locking mechanism when the door is opened and the key is removed from the key cylinder Explanatory drawing which shows operation | movement of the 1st, 2nd bracket accompanying opening and closing of a door. Explanatory drawing showing the door being bent The schematic perspective view which shows the connection of the connection link of Example 2, and a lock mechanism part. Explanatory drawing which shows the door lock mechanism when the door of Example 2 is locked. Explanatory drawing showing the door lock mechanism when unlocking Explanatory drawing showing the position of the key cylinder after unlocking Explanatory drawing which shows a mode that the 1st lock bracket of the lower side lock mechanism part rotated. Explanatory drawing which shows the back side of the door of Example 3. The schematic perspective view which shows the connection of the connection link of Example 3, and a lock mechanism part. Explanatory drawing which shows the lock mechanism part periphery when the door of Example 3 is locked. Explanatory drawing showing the door lock mechanism with the door unlocked Explanatory drawing showing the door lock mechanism when the door is opened with the lock released Explanatory drawing that shows the door lock post hitting only the lower locking mechanism

  Embodiments of a door lock mechanism according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic perspective view of the cassette of the first embodiment, and FIG. 2 is a schematic perspective view of the cassette of the first embodiment with the door open.

  Reference numeral 1 denotes a cassette body (housing), which is a banknote storage cassette, replenishment collection cassette or the like of an automatic teller machine used in a financial institution, and has a door 2.

  A door 2 is attached to the cassette body 1 so as to be rotatable in the direction of arrow A shown in FIG. Reference numeral 3 denotes a key cylinder for unlocking the door 2, which has a key insertion port (key hole) and is located on the side opposite to the rotation fulcrum of the door 2, and is substantially at the center of the cassette body 1 in the height direction. Implemented nearby.

  The key cylinder 3 is configured such that the key can be inserted and removed when the insertion slot is vertical.

  Reference numeral 4 denotes a lock mechanism, which is mounted on the cassette body 1, is located on the opposite side of the door 2 from the rotation fulcrum, and is mounted at two locations on the cassette body 1.

  3 is a top view showing the door, and FIG. 4 is a schematic perspective view of the door as seen from the back side.

  3 and 4, reference numerals 5a and 5b denote door lock post units, which are brackets 6a and 6b formed in an L shape fixed to the door, and the axial direction of the rotation fulcrum shaft 8 held by the brackets 6a and 6b. The door lock posts 7a and 7b extend perpendicularly to each other, and are arranged one at the top and one at the bottom of the door 2 as shown in FIG.

  FIG. 5 is a schematic perspective view showing the configuration of the lock mechanism.

  In FIG. 5, reference numeral 10 denotes a first lock bracket, which is provided with a locking groove 10a for locking the door lock posts 7a and 7b, and rotates to the base bracket 15 via a rotating shaft 11 serving as a rotation fulcrum. It is fixed as possible.

  A stud 12 is attached to the first lock bracket 10 and extends toward the base bracket 15.

  Reference numeral 16 denotes a second lock bracket, which is disposed immediately above the first lock bracket 10 and is rotatably fixed to the base bracket 15 via a rotation shaft 17 serving as a rotation fulcrum.

  Reference numeral 18 denotes a stud, which is formed to have a length that penetrates the base bracket 15 from the second lock bracket 16 and is inserted into insertion holes 26a and 26b described later.

  As shown in FIG. 5, the first lock bracket 10 is provided with a fitting recess 10b at a portion facing the second lock bracket 16, while the second lock bracket 16 is provided with the fitting recess 10b. If the fitting convex part 16a is provided in the fitting concave part 10b and the second locking bracket 16 is fixed so as not to rotate, the fitting convex part 16a to be fitted is provided. Even if a rotational force is applied, the fitting convex portion 16a is fitted in the fitting concave portion 10b, and the rotation of the first lock bracket 10 is restricted.

  In addition, when the fitting convex part 16a fits into the fitting concave part 10b and the rotation of the first lock bracket 10 is restricted, the door is inserted into each locking groove 10a arranged at the upper part and the lower part of the door 2. The lock post 7a or the door lock post 7b is inserted, whereby the door 2 is locked.

  Further, the first lock bracket 10 has a convex portion 10c on the right side of the fitting concave portion 10b shown in FIG. 5, while the second lock bracket 16 has a concave portion 16b on the right side of the fitting convex portion 16a shown in FIG. The first and second lock brackets are provided so that the convex portion 10c of the first lock bracket 10 fits into the concave portion 16b of the second lock bracket 16 when the lock of the door 2 described later is open. Since both the doors 10 and 16 rotate, the door lock posts 7a and 7b are both released from being locked by the locking groove 10a of the first lock bracket 10.

  The base bracket 15 is formed by providing a hole (not shown) at a position where the studs 12 and 18 are inserted based on a U-shaped sheet metal, and the hole is formed by the first lock bracket 10 and the second lock bracket 16. It is assumed that it has a size that does not prevent rotation of the.

  Therefore, the studs 12 and 18 penetrate from the side where the first lock bracket 10 and the second lock bracket 16 of the base bracket 15 shown in FIG. 5 are attached to the opposite side.

  In addition, projections (not shown) are provided at two locations on the surface of the base bracket 15 opposite to the surfaces facing the first lock bracket 10 and the second lock bracket 16, one of which is the first Below the position where the lock bracket 10 is attached, the other part is behind the part where the second lock bracket 16 is attached and opposite to the end of the base bracket 15 which is open in a U-shape. At the end of the side.

  Here, FIG. 6 is a schematic side view showing the position of each part of the lock mechanism.

  In FIG. 6, 20 indicated by a dotted line is a tension spring (second urging means) and 21 is a tension spring (first urging means), both of which are the first lock bracket 10 and the second lock bracket 10 of the base bracket 15. It is arranged on the back surface of the surface to which the lock bracket 16 is attached.

  One end of the tension spring 20 is hooked on the stud 18 of the second lock bracket 16, and the other end is a projection (not shown) provided below the position where the first lock bracket 10 of the base bracket 15 is attached. Hooked.

  As a result, the tension spring 20 applies an urging force that rotates the second lock bracket 16 in the direction of arrow C with the rotation shaft 17 as a rotation fulcrum.

  One end of the tension spring 21 is hooked on the stud 12 of the first lock bracket 10, and the other end is on the back side of the base bracket 15 where the second lock bracket 16 is attached and on the base bracket 15. It is hooked on a projection (not shown) provided at the end opposite to the end opening in the shape of a letter.

  As a result, the tension spring 21 applies an urging force for rotating the first lock bracket 10 in the direction of arrow D with the rotary shaft 11 as a rotation fulcrum.

  The urging force of the tension spring 20 is set larger than the urging force of the tension spring 21, so that the second lock bracket 16 is fitted into the fitting recess 10 b of the first lock bracket 10 to be described later. When the mating protrusion 16a is fitted, the second lock bracket 16 can restrict the first lock bracket 10 from rotating upward.

  FIG. 7 is a schematic perspective view showing a state in which the door lock post is locked by the lock mechanism portion.

  When the door 2 is closed and locked, the door lock posts 7a and 7b are connected to the first lock bracket 10 when the door 2 is closed and locked as shown in FIG. It comes to fit into the locking groove 10a, whereby the door lock posts 7a, 7b are locked. The operation until the door lock posts 7a and 7b are fitted into the locking grooves 10a will be described later.

  FIG. 8 is a schematic perspective view showing the key cylinder.

  In FIG. 8, reference numeral 25 denotes a key link, which is U-shaped with a groove formed in part and is fixed to the key cylinder 3. When the key is inserted into the key cylinder 3 and rotated, Rotate.

  Reference numeral 26 denotes a connecting link, which is fixed to a frame (not shown) of the cassette body 1 so as to be movable up and down, and is configured to be movable up and down in the arrow G direction and the H direction (vertical direction). Furthermore, it has a protrusion 27 that extends at right angles to the surface where the insertion holes 26a, 26b are open.

  Further, a stud 28 extending perpendicularly from the surface of the projecting portion 27 is formed on the projecting portion 27 toward the side where the key cylinder 3 is formed, and the stud 28 is fitted in a U-shaped groove of the key link 25. The key link 25 is pushed up or down as the key link 25 rotates.

  The connection link 26 is positioned at the lowest position when the insertion port of the key cylinder 3 is vertical.

  Reference numeral 30 denotes a link tension spring, one end of which is attached to the opposite side of the key link 25 where it is fixed to the key cylinder 3, and the other end is fixed to a frame (not shown). A force in the direction indicated by an arrow K is applied.

  Further, as shown in FIG. 8, the stud 18 of the second lock bracket 16 of the lock mechanism 4a is inserted through the upper insertion hole 26a of the connection link 26, and the lower insertion hole 26b of the connection link 26 is inserted. The stud 18 of the second lock bracket 16 of the lock mechanism 4b is inserted.

  Next, the operation will be described. FIG. 9 is a schematic side view showing a state in which the door is closed.

  Although the upper side of the door 2 is shown in FIG. 9, the lower side of the door 2 has a similar structure in terms of mechanism.

  In FIG. 9, the direction of each part of the stud 28, the key cylinder 3, and the key link 25 is rotated 90 degrees from the actual direction and arranged in the same direction as the lock mechanism part 4. This is for clarifying the relationship between the orientation and position of the cylinder 3 and the key link 25 and the lock mechanism portion 4, and is similarly described in the following drawings.

  FIG. 9 shows a state in which the door 2 is locked, and the door lock post 7 a enters the locking groove 10 a of the first lock bracket 10. At this time, the first lock bracket 10 is acted on by the tension spring 21 in the direction of arrow D in FIG. 9, while the second lock bracket 16 is acted on by the tension spring 20 in the direction of arrow C. Since the fitting concave portion 10b of the first lock bracket 10 and the fitting convex portion 16a of the second lock bracket 16 are fitted, the first lock bracket 10 is fixed and held in a state where it cannot rotate.

  At this time, the insertion hole 26a of the connecting link 26 and the stud 18 are not in contact with each other.

  FIG. 10 is a schematic side view showing a state when the door is opened.

  When the key cylinder 3 is rotated in the direction of the arrow J shown in FIG. 10 by a key (not shown), the key link 25 is rotated together with the key cylinder 3, and the stud 28 is lifted upward by the key link 25. Move (rise) in the direction of arrow G.

  At this time, the end of the insertion hole 26a of the connecting link 26 comes into contact with the stud 18 and lifts up, and the second lock bracket 16 rotates about the rotation shaft 17 in the direction of arrow B, so that the second lock The fitting convex portion 16a of the bracket 16 deviates from the state where it is fitted in the fitting concave portion 10b of the first lock bracket 10, and the first lock bracket 10 is rotated in the direction of arrow D by the tension spring 21.

  As a result, when the door lock post 7a is removed from the state where the door lock post 7a is fitted and locked in the locking groove 10a and the clerk tries to open the door 2 in this state, the door lock post 7a is separated from the locking groove 10a. 10 moves in the direction of the arrow L, and the door 2 is opened.

  Here, when the convex part of the first lock bracket 10 is fitted into the concave part of the second lock bracket, the state in which the door lock post 7a is detached from the locking groove 10a is maintained.

  Further, the convex portion of the first lock bracket 10 fitted in the concave portion of the second lock bracket causes the door lock post 7a to collide with the first lock bracket 10 when the door 2 is closed again, It comes to come off.

  FIG. 11 is an explanatory view showing the door lock mechanism when the door is opened and the key is removed from the key cylinder.

  As shown in FIG. 11, when the insertion port of the key cylinder 3 is in a vertical state, the key can be removed from the insertion port. At this time, the connecting link 26 moves in the direction of the arrow H, that is, descends and returns to the state when the door 2 is locked. At this time, the upper end of the insertion hole 26a of the connecting link 26 and the stud 18 are not in contact with each other, and the gap is opened by the gap N.

  Next, in order to lock the door 2 by closing the door 2, it is necessary to push in the door 2. By pushing in the door 2, the door lock post 7a presses the first lock bracket 10, and the arrow E shown in FIG. The first lock bracket 10 rotates in the direction.

  Here, FIG. 12 is an explanatory view showing the operation of the first and second brackets when the door is opened and closed, and (a) is the state of the first and second brackets 10 and 16 when the door is opened. (B) shows a state in which the door is closed and the fitting convex portion 16a of the second bracket 16 is fitted in the fitting concave portion 10b of the first bracket 10, and (c) shows the fitting concave portion 10b. The fitting convex part 16a is shown in FIG.

  When the first lock bracket 10 is rotated from the state of FIG. 12A, the convex portion 10c is detached from the concave portion 16b as shown in FIG. 12B, whereby the second lock bracket 16 is pulled as described above. The spring 20 is rotated in the direction of arrow C, and the fitting protrusion 16a of the second lock bracket 16 is fitted into the fitting recess 10b of the first lock bracket 10 as shown in FIG. 2 is locked.

  As described above, in this embodiment, since the key cylinder is locked and the door is locked, the door lock mechanism that releases the lock by simple key operation is cheaper than the configuration using the solenoid. Can be realized.

  The present embodiment provides means for solving the following problems in the first embodiment described above.

  In Example 1 mentioned above, the two lock mechanism parts 4 provided in the upper part and the lower part of the door 2 are each independent, and in order to lock the door 2 with the lock mechanism part 4, the door 2 must be pushed in. Therefore, if the push-in is weak, only one of the two locations may be locked.

  For example, when only the lower side of the door 2 is locked and the upper side is not locked, if the upper side of the door is forcibly opened, the door 2 bends as shown in FIG. 13 to create a gap between the cassette body and the door. The inside of the cassette body 1 can be accessed, and the bills loaded in the cassette body 1 are easily taken out.

  Thereafter, when the upper side of the door 2 is pushed and locked, the banknote can be extracted without damaging or breaking the cassette body and the door, so that it cannot be distinguished from the normal banknote loading operation. Therefore, when a part of the door is not locked due to an operation mistake or the like, there is a problem that the banknote may be taken out illegally.

  Here, FIG. 14 is a schematic perspective view showing the connection between the connecting link and the lock mechanism of the second embodiment.

  In addition, the same part as the said Example 1 attaches | subjects the same code | symbol, and abbreviate | omits the description.

  In FIG. 14, reference numeral 40 denotes a connection link, which is fixed to a frame (not shown) of the cassette body 1 and is configured to be movable up and down in the directions of arrows G and H (up and down directions). , 40b. Further, as described above, the projection 27 is provided.

  The insertion holes 40a and 40b allow the studs 18 of the second lock brackets 16 to be inserted in the same manner as the insertion holes 26a and 26b of the first embodiment, and the lengths of the insertion holes 40a and 40b indicated by the arrows P in the vertical direction. The length of the stud 18 is substantially the same as the diameter of the stud 18, and the lateral length is formed so as not to prevent the movement of the stud 18.

  Reference numeral 42 denotes a key link having one end fixed to the key cylinder 3 and the other end supporting the protruding portion 27 of the connecting link 40 from below. When the key is inserted into the key cylinder 3 and rotated, It rotates together with the key cylinder 3.

  Reference numeral 44 denotes a connection link spring, one end of which is attached to the lower end of the connection link 40, the other end is fixed to a frame (not shown) of the cassette body 1, and a tension spring that pulls the connection link 40 downward.

  The operation of the above configuration will be described.

  Here, FIG. 15 is an explanatory view showing the door lock mechanism when the door of the second embodiment is locked, and FIG. 16 is an explanatory view showing the door lock mechanism when unlocking.

  As shown in FIG. 15, a key cylinder in which an attendant inserts a key into the insertion slot for unlocking the door 2 in which the door lock posts 7 a, 7 b are locked in the locking grooves 10 a of the upper and lower locking mechanisms 4. When 3 is turned in the direction of arrow J shown in FIG. 16, the key link 42 rotates together with the key cylinder 3.

  And the protrusion part 27 currently supported by the key link 42 is lifted, and the lock of the door 2 is cancelled | released similarly to the said Example 1 because the connection link 40 moves to the arrow G direction.

  FIG. 17 is an explanatory view showing the position of the key cylinder after unlocking.

  After the door 2 is unlocked, when the force to turn the key cylinder 3 is lost, the key cylinder 3 and the key link 42 are rotated in the direction of arrow K shown in FIG. The position of becomes vertical, and the key can be removed.

  At this time, the stud 18 is inserted into the upper and lower insertion holes 40 a and 40 b of the connection link 40, and the position of the connection link 40 is determined by the stud 18.

  In addition, each lock mechanism portion 4 having each stud 18 is configured such that the second lock bracket 16 locks the door 2 with the convex portion 10c of the first lock bracket 10 fitted in the concave portion 10b of the second lock bracket. Compared with the state which was doing, it has rotated upwards around the rotating shaft 17, and the position of the stud 18 is still rising.

  Therefore, as shown in FIG. 17, even if the key link 42 rotates in the direction of the arrow K, the connecting link 40 does not descend but keeps being lifted.

  FIG. 18 is an explanatory view showing a state in which the first lock bracket of the lower lock mechanism portion is rotated.

  When the clerk closes the door 2 to lock the door 2, when the door lock post 7 b hits only the first lock bracket 10 of the lower lock mechanism 4 when the force to push the door 2 is weak, As shown in FIG. 18, the door lock post 7b enters the locking groove 10a and abuts on the first lock bracket 10 of the lock mechanism portion 4 provided at the lower portion, so that the first lock bracket 10 is rotated. Rotate in the direction of arrow E using 11 as a fulcrum.

  At this time, the first lock bracket 10 of the upper lock mechanism portion 4 does not hit the door lock post 7a, and the upper lock mechanism portion 4 does not move and maintains its position, as shown in FIG. In addition, the connecting link 40 in the lifted state causes each second lock bracket 16 to be in a state where the portion where the stud 18 is attached is lifted.

  Therefore, even if the lower first lock bracket 10 rotates in the direction of arrow E, the second lock bracket 16 does not move, and the fitting convex portion 16a does not fit into the fitting concave portion 10b. The door 2 is not locked in the lower locking mechanism 4 together with the upper locking mechanism 4, and if the clerk tries to open the door 2 in such a state, the door 2 is easily opened.

  In addition, when the two first lock brackets 10 are rotated by the door lock posts 7a and 7b in order to simultaneously lock the lock mechanism portions 4 arranged above and below, the two second lock brackets 16 are respectively Rotating to the first lock bracket 10 side, the connecting link 40 is lowered, and the fitting convex portion 16a of the second lock bracket 16 is fitted into the fitting concave portion 10b of the first lock bracket 10. The door 2 is locked.

  As described above, in this embodiment, in addition to the effects of the first embodiment, in the structure in which the door is locked by pushing in the door, the door with respect to the first lock brackets of the two lock mechanism portions. If the door lock post provided on the door is not securely applied, the door will not be locked, so the staff who close the door can be cautiously manually operated to close the door, and the door is not pushed easily. In addition, it is possible to prevent an operation mistake that the user forgets to lock one of the lock mechanisms, and it is possible to prevent the banknote from being illegally extracted from the cassette body due to such an operation error.

  In the second embodiment, the case where the push into the door is weak and the door lock post hits only the first lock bracket of the lower lock mechanism portion has been described, but the first of the upper lock mechanism portion is described. Even when the door lock post hits only the lock bracket, the connecting link does not descend as described above.

  The same parts as those in the above embodiments are given the same reference numerals and the description thereof is omitted.

  FIG. 19 is an explanatory view showing the back side of the door of the second embodiment.

  In FIG. 19, reference numeral 50 denotes a shaft which is provided on the back side of the door 2 and in the vicinity of the door lock post units 5 a and 5 b and extends vertically from the back surface of the door 2.

  The shaft disposed in the vicinity of the door lock post unit 5a is a shaft 50a, and the shaft 50a is provided above the door lock post unit 5a.

  The shaft arranged in the vicinity of the door lock post unit 5b is a shaft 50b, and the shaft 50b is provided below the door lock post unit 5b.

  FIG. 20 is a schematic perspective view illustrating the connection between the connecting link and the lock mechanism unit according to the third embodiment.

  In FIG. 20, reference numeral 52 denotes a connecting link, which is provided with an insertion hole 52a at the upper portion and an insertion hole 52b at the lower portion, and further, the first lock bracket 10 and the second lock bracket of the lock mechanism portion 4 arranged at the upper portion. The link stud 53a is provided at a position that does not hinder the operation of the link mechanism 53, and the link stud 53b is provided at a position that does not hinder the operation of the first lock bracket 10 and the second lock bracket 16 of the lock mechanism portion 4 disposed below. Provided.

  In this embodiment, a link stud 53a is provided above the insertion hole 52a, and a link stud 53b is provided below the insertion hole 52b.

  The stud 18 of the second lock bracket 16 of the lock mechanism portion 4a is inserted into the insertion hole 52a of the connection link 52, and the second lock of the lock mechanism portion 4b is inserted into the insertion hole 52b below the connection link 52. The stud 18 of the bracket 16 is inserted.

  Further, the insertion holes 52a and 52b are formed so that the length in the vertical direction is substantially the same as the diameter of the stud 18 or slightly longer than that, and the length in the horizontal direction does not hinder the movement of the stud 18. Has been.

  54a is a link lock portion, which is rotatably attached to the frame of the cassette body 1 via the link lock rotating shaft 55a on the opposite side of the door 2 so as to sandwich the connecting link 52 and in the vicinity of the link stud 53a. It is formed in a letter shape.

  A link lock portion 54b is rotatably attached to the frame of the cassette body 1 via the link lock rotation shaft 55b on the opposite side of the door 2 so as to sandwich the connecting link 52 and in the vicinity of the link stud 53b. It is formed in a letter shape.

  Here, the portions protruding to the link studs 53a, 53b side in FIG. 20 of the L-shaped link lock portions 54a, 54b are the stud support portions 57a, 57b, and when the door 2 is locked, each stud support is supported. The tips of the portions 57a and 57b abut against the link studs 53a and 53b.

  When the door 2 is opened and the link 52 of the present embodiment is lifted in the same manner as the link 40 of the second embodiment, the link lock portions 54a and 54b are located below the link studs 53a and 53b. The size and position are determined so that 57b enters.

  When the stud support portions 57a and 57b enter below the link studs 53a and 53b, the stud support portions 57a and 57b engage with the link studs 53a and 53b, and the link lock portions 54a and 54b thereby prevent the link link 52 from being lowered. Support to do.

  Reference numeral 56a denotes a bracket spring (third urging means), one end of which is fixed to the link lock portion 54a, the other end is fixed to a frame (not shown), and the link lock portion 54b is in the direction indicated by the arrow Q shown in FIG. An urging force for rotating the stud 53a is given.

  Reference numeral 56b denotes a bracket spring (third urging means), one end of which is fixed to the link lock portion 54b, the other end is fixed to a frame (not shown), and the link lock portion 54a is in the direction indicated by the arrow Q shown in FIG. An urging force for rotating the stud 53b is given.

  FIG. 21 is an explanatory view showing the door lock mechanism when the door is locked in the third embodiment, and FIG. 22 is an explanatory view showing the door lock mechanism with the door unlocked.

  In FIG. 21, the orientations of the stud 28, the key cylinder 3, and the key link 42 are illustrated in the same direction as the lock mechanism 4 by shifting the position by 90 degrees from the actual orientation shown in FIG. This is also shown in the figure.

  When the door 2 is closed and locked by the two locking mechanisms 4, the link lock portion 54a is pressed by the stud 50a fixed to the back side of the door 2 as shown in FIG. 21, and the stud support portion 57a is linked to the link stud. It is located on the right side in the figure from 53a. For this reason, the link stud 53a protrudes in front of the link lock portion 54a.

  At this time, when the key link 42 is rotated by inserting a key (not shown) into the insertion slot and rotating the key cylinder 3 in the direction of arrow J shown in FIG. The protrusion 27 is lifted by the rotation of 42, so that the connecting link 52 moves (rises) in the direction of arrow G.

  The stud 18 of the second lock bracket 16 is also lifted by the rise of the connecting link 52, and the fitting between the fitting convex portion 16a of the second lock bracket 16 and the fitting concave portion 10b of the first lock bracket 10 is released. Is done.

  Further, since the first lock bracket 10 is rotated upward by the tension spring 21, the convex portion 10c of the first lock bracket 10 fits into the concave portion 10b of the second lock bracket, and the second lock bracket 16 is Compared with the state in which the door 2 is locked, the door 2 is supported in a state of being rotated upward about the rotation shaft 17.

  Moreover, since the link studs 53a and 53b also rise with the rise of the connecting link 52, the stud 53a moves above the stud support portion 57a of the link lock portion 54a. At this time, when the door 2 is unlocked and the door 2 is opened, the shafts 50a and 50b move in the direction of arrow L in FIG.

  The link lock portion 54a is pulled by the bracket spring 56a, rotates around the link lock rotation shaft 55a in the direction of the arrow Q, and the stud support portion 57a enters the lower side of the link stud 53a, thereby the stud support portion 57a. And the link stud 53a engage.

  Similarly, since the link stud 53b also moves upward relative to the stud support portion 57b of the link lock portion 54b, the link lock portion 54b is pulled by the spring 56b and rotates in the direction of arrow Q about the link lock rotation shaft 55b, The stud support portion 57b of the link lock portion 54b enters the lower side of the link stud 53b and engages.

  Therefore, the connecting link 52 is prevented from being lowered by the stud 18 inserted through the insertion holes 52a and 52b, and is also prevented from being lowered by the link lock portions 54a and 54b.

  FIG. 23 is an explanatory diagram showing the door lock mechanism when the lock is released and the door is open.

  After the lock of the door 2 is released, if the clerk releases the key with the key inserted into the key cylinder 3, the key cylinder 3 and the key link 42 are rotated in the direction of arrow K shown in FIG. The position of the insertion port of the key cylinder 3 is vertical, and the key is released.

  At this time, the force from the key link 42 does not act on the protruding portion 27, but the connecting link 52 is prevented from being lowered and remains in the raised state.

  FIG. 24 is an explanatory view showing a state in which the door lock post hits only the lower locking mechanism.

  A case where the force of pushing the door 2 when the clerk closes the door 2 is weak and the force is applied only to the lower side of the door 2 will be described below.

  When the force for pushing the door 2 is weak and only the lower side of the door 2 is pushed, the door lock post 7b enters the locking groove 10a of the first lock bracket 10 as shown in FIG. , The first lock bracket 10 rotates about the rotation shaft 11.

  As a result, the contact between the convex portion 10 c of the first lock bracket 10 and the concave portion 16 b of the second bracket 16 disposed at the lower portion of the cassette body 1 is released.

  Further, the link lock portion 54b is retracted from the link stud 53b so that the tip of the shaft 50b is pressed against the link lock portion 54b and the engagement of the link lock portion 54b with the link stud 53b is released.

  At this time, the second bracket 16 of the lock mechanism portion 4 below the cassette body 1 is subjected to a rotational force about the rotation shaft 17 by the tensile force of the tension spring 20, but the connecting link 52 is connected to the cassette body 1. Since the first lock bracket 10 disposed on the upper portion does not rotate, the connecting link 52 remains in a state where its lowering is prevented and does not move from the position when the door 2 is opened.

  Therefore, the position of the insertion hole 52b is also maintained, and the second lock bracket 16 is in a state where the stud 18 cannot rotate in the direction of arrow C through the insertion hole 52b.

  When the force for pushing the door 2 is released in this state, the link lock portion 54b is rotated to the link stud 53b side by the bracket spring 56b, so that the shaft 50b is pushed back in the arrow L direction, that is, the direction in which the door 2 is opened. At the same time, the door lock post 7b moves in the arrow L direction.

  Therefore, the door lock post 7b is separated from the locking groove 10a of the first lock bracket 10 of the lower lock mechanism portion 4, and the door 2 is not completely closed.

  When the door 2 is pushed back and the door lock post 7b is separated from the locking groove 10a, the stud support portion 57b of the link lock portion 54b enters the lower side of the link stud 53b and returns to the state shown in FIG.

  As described above, in addition to the effect of the second embodiment, this embodiment opens the door when the door cannot be locked by the two locking mechanisms, so that the clerk who closes the door becomes the door. Immediately knowing that the lock is not applied, allowing the staff to carefully perform manual operation to close the door, and forgetting to lock at one lock mechanism because the door is weakly pushed It is possible to prevent an operation mistake and to prevent the banknote from being illegally extracted from the cassette body due to such an operation error.

  In addition, in each said Example, although the case where two lock mechanism parts were provided was demonstrated, two or more places may be sufficient.

DESCRIPTION OF SYMBOLS 1 Cassette main body 2 Door 3 Key cylinder 4 Lock mechanism part 5a, 5b Door lock post unit 6a, 6b Bracket 7a, 7b Door lock post 8 Rotation fulcrum shaft 10 1st lock bracket 10a Locking groove 10b Fitting recessed part 10c Convex part 11, 17 Rotating shaft 12, 18, 28 Stud 15 Base bracket 16 Second lock bracket 16a Fitting protrusion 16b Recess 20, 21 Tension spring 25 Key link 26, 40 Connecting link 26a, 26b, 40a, 40b Insertion hole 27 Projection 30 Link tension spring 40 Connection link 40a, 40b Insertion hole 42 Key link 44 Connection link spring 50 Shaft 52 Connection link 52a, 52b Insertion hole 53a, 53b Link stud 54a, 54b Link lock part 55a, 5 b link lock rotation axis 57a, 57 b stud support portions 56a, 56b bracket spring

Claims (4)

A key cylinder provided in a housing having a door that opens and closes by rotation, and provided with a key slot;
Two upper and lower lock posts provided on the back side of the door;
A connecting link provided on the housing so as to have an insertion hole in the upper part and the lower part, rise as the key cylinder rotates, and slide.
When the two lock posts are rotatably provided in the housing so as to correspond to the two lock posts, and each has a locking groove into which the lock post is fitted, a first lock bracket,
A second lock bracket having two studs rotatably provided in the housing so as to be able to be fitted to the two first lock brackets, each having a stud inserted into the insertion hole;
First biasing means for biasing the first lock bracket to rotate upward;
Second urging means for urging the second lock bracket to rotate downward,
The length in the vertical direction is the same as the diameter of the stud, and the size of each insertion hole is determined so that the length in the horizontal direction does not hinder the movement of the stud,
When the key cylinder is rotated with the door closed, the connecting link rises to push up the stud by the lower sides of the two insertion holes, and the first lock bracket and the second lock bracket are fitted together. And unlocking the first lock bracket so that the door can be opened by opening the lock post from the locking groove,
When the door is closed and the key cylinder is locked, if the lock post does not enter the locking groove of one of the first lock brackets, the upper side of the insertion hole contacts the stud of the second lock bracket. The connecting link prevents the lower link bracket from descending and prevents the second lock bracket from fitting into the other first lock bracket in which the lock post enters the locking groove; The door lock mechanism is characterized in that the door is not locked. In the door lock mechanism according to claim 1,
A fitting recess is provided at the top of the first lock bracket,
A door lock mechanism, wherein a fitting convex portion that fits into the fitting concave portion is provided at a lower portion of the second lock bracket. In the door lock mechanism according to claim 1,
The door lock mechanism characterized in that the second urging means urges the second lock bracket with a stronger urging force than the first urging means. In the door lock mechanism according to claim 1, claim 2 or claim 3,
A link stud provided at a position that does not hinder the movement of the first lock bracket and the second bracket at the upper and lower portions of the connection link;
Two corresponding to the two link studs are rotatably provided in the housing, and engage the lower side of the link stud when the door is open to prevent the connection link from descending. A link lock,
Third urging means for urging the link lock portion to rotate toward the link stud side;
The two link lock portions are provided on the back side of the door so as to correspond to the two link lock portions, and the link lock portion with respect to the link stud is pressed by rotating the link lock portion when the door is closed. A shaft for releasing the engagement of
When locking the key cylinder with the door closed, if the lock post does not enter the locking groove of one of the first lock brackets, the link lock pressed by the shaft is attached to the third attachment. A door lock mechanism, wherein the door is not closed by pushing back the shaft by a biasing means.

Images