JP2007182693A - Lock unit for door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock unit for a door, which prevents a person from forgetting to lock the door, by turning a lock body into a restrained state in such a manner as to be interlocked with a door closing operation, without performing a locking operation. <P>SOLUTION: The lock unit comprises a lock body 3 which is fixed to one side of the door 2, and a body 4 to be connected, which is fixed to the other side of the door 2, so as to be locked to the lock body 3. The lock body 3 comprises: a locking body 6 which can lock a part 5 to be locked, formed in the body 4, in a locking position, and which can unlock the part 5 in an unlocking position; a door detecting body 7 which is held in a door non-detection position by an urging force, and which is moved to a door detection position by interfering with the body 4 or a body-to-be-connected fixing-side member in a door-closed state; a locking operation part 8 which is locked to the locking body 6 midway through the movement of the door detecting body 7 to the door detection position, so as to drive the locking body 6 to the locking position, and which is unlocked from the locking body 6 in the door detection position; and a stopper body 9 which is locked to the locking body 6 in the movement of the locking body 6 to the locking position, so as to regulate the movement of the locking body 6 to the side of the unlocking position. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a door locking device.

  As a door locking device used for locking a door of a vending machine or the like, the one described in Patent Document 1 is known. In this conventional example, the lock device is used by being fixed to the device casing of the vending machine, and locks the ring portion (locking portion) formed on the second lock main body fixed to the door side to lock the door. A lock plate that holds the lock body in the locking position with the locking portion by locking to the locking body that is biased to the locking release position side by the lock body biasing means And a cylinder lock that restrains the lock plate biased to the locking position side with the lock body by the plate biasing means in the unlocked position in the unlocked state.

When the cylinder lock is unlocked from the locked state, the lock body is unlocked by the lock plate. As a result, the lock body is moved to the lock release position side by the lock body biasing means, and thereafter, The door can be opened. When the lock body is pushed into the locking position with the locking portion against the lock body biasing means from this unlocked state, the lock plate is locked to the lock body by the plate biasing means, and thereafter the door opening operation is performed. Is regulated.
Japanese Patent No. 3108633

  However, in the above-described conventional example, in order to return to the locked state again after opening the door of the device housing, it is necessary to push into the lock body. There is a drawback that there is.

  The present invention has been made to eliminate the above drawbacks, and prevents forgetting to lock by shifting to the locked state of the lock body in conjunction with the closing operation of the door without requiring a special locking operation, And it aims at provision of the locking device for doors which also improved operativity.

According to the present invention, the object is
An apparatus housing 1 or a lock body 3 fixed to one of the doors 2 closing the opening of the apparatus housing 1, and a connected body 4 fixed to the other and connected to the lock body 3 in a closed state. Have
The lock body 3 is
A lock body 6 capable of locking the locked portion 5 formed on the connected body 4 at the lock position and releasing the lock at the lock release position;
A door detector 7 that is held at the door non-detection position by the urging force and moves to the door detection position by interfering with the connected body 4 or the connected body fixing side member in the closed state;
A lock operation unit 8 that engages and drives the lock body 6 to the lock position while the door detection body 7 is moving to the door detection position, and releases the engagement with the lock body 6 at the door detection position;
A stopper body 9 that engages with the lock body 6 when the lock body 6 moves to the lock position and regulates the movement of the lock body 6 toward the unlock position;
A cylinder lock 10 capable of driving the stopper body 9 to an unlocking position with the lock body 6 by an unlocking operation;
This is achieved by providing a door locking device having

  The door locking device includes a lock body 3 fixed to one of the device housing 1 and the door 2, for example, the device housing 1 side, and a connected body 4 fixed to the other (in this example, the door 2 side). Have A locked portion 5 is formed on the coupled body 4, and the opening operation can be restricted by locking the lock body 6 on the lock body 3 side to the locked portion 5 in the closed state.

  The door detection body 7 is a door that closes the door 2 and interferes with the coupled body 4 or the coupled body 4 fixing side member, that is, the member to which the coupled body 4 is fixed (the door 2 in this example). It is movable between the detection position and the door non-detection position that is the initial position, and is biased toward the door non-detection position by appropriate biasing means.

  The lock operation unit 8 operates in accordance with the movement of the door detection body 7 to the door detection position, and drives the lock body 6 from the unlock position to the lock position. The driving force to the lock body 6 can be obtained from the operating force of the door detection body 7 to the door detection position. For example, when the door detection body 7 translates and moves to the door detection position, the door detection By causing an appropriate slope to interfere with the body 7, a driving force in a direction orthogonal to the moving direction of the door detection body 7 is obtained, and the lock body 6 is directly translated by this driving force, or the locking body 6 is driven by this driving force. Can be driven to rotate.

  The drive of the lock body 6 to the lock position by the lock operation unit 8 is performed in the middle of the door detection body 7 reaching the door detection position from the door non-detection position. Thereafter, the lock operation unit 8 is connected to the lock body 6. The lock is released and the lock body 6 is allowed to move to the unlock position.

  When the lock body 6 is driven to the lock position by the lock operation unit 8, the stopper body 9 is engaged with the lock body 6 and restricts the movement of the lock body 6 toward the lock release position. The stopper body 9 can be driven to the unlocking position with the lock body 6 only by the unlocking operation with respect to the cylinder lock 10, and as described above, the restriction by the lock operation portion 8 is released at the lock position. The lock body 6 can be moved to the unlock position by unlocking the cylinder lock 10 and releasing the lock by the stopper body 9, and the door 2 can be opened thereafter.

  Therefore, in the present invention, when the door 2 is closed, the lock body 6 automatically restrains the coupled body 4, and in this state, the restriction cannot be released by the lock body 6 without performing the unlocking operation of the cylinder lock 10. For this reason, forgetting to lock can be surely prevented. Further, once the lock body 6 reaches the lock position, the lock body 6 is held at the lock position by the stopper body 9, and even if the door detection body 7 is operated, the restraint releasing operation of the coupled body 4 by the lock body 6 is prohibited. As a result, an unauthorized unlocking operation by destroying the door detector 7 in the locked state can be reliably prevented.

  The movement of the lock body 6 to the unlock position can be performed, for example, by directly operating from the outside. However, if the lock body 6 is biased to the unlock position side, the unlocking operation to the cylinder lock 10 is performed. As a result, the lock body 6 is automatically moved to the unlocked position, thereby improving usability.

  According to the present invention, since it is possible to shift to the locked state of the lock body in conjunction with the door closing operation without requiring a special locking operation, forgetting to lock is prevented and the operability is improved. Can do.

  FIG. 1 shows an embodiment of the present invention configured as an auxiliary lock for a vending machine. In this embodiment, the vending machine is formed by closing the opening of the apparatus housing 1 with a door 2 that can rotate around a hinge 1a. A handle lock 15 as a main lock is fixed to the door 2.

  The door locking device includes a lock body 3 fixed to the side wall of the device housing 1 and a connected body 4 fixed to the open end surface of the door 2. As shown in FIG. 2, the connected body 4 is formed by extending a connecting projection piece 4 c from the main body portion 4 b fixed using a bolt 4 a fixed to the door 2 to the back side.

  A locked portion 5 having a through-hole 5a penetrating in the vertical direction is bulged on the back surface of the connecting protrusion 4c. In addition, a press cover portion 14 is formed in the main body portion 4b of the coupled body 4 so as to abut on a door detection body 7 described later with the door 2 closed.

  The to-be-connected body 4 is made of a material having good tool cutting resistance such as stainless steel, and fits into a recess 3b formed on the surface of the housing 3a of the lock body 3 in the closed state as shown in FIGS. In addition, the lock body 6 of the lock body 3 and the door detection body 7 are covered to prevent exposure to the outside.

  As shown in FIGS. 2 and 3, the lock body 3 includes a lock body 6, a door detection body 7, a lock operation section 8, a stopper body 9, and a cylinder lock 10 that are housed in a housing recess 3 c formed in the housing 3 a. Have The housing 3 a is formed of a material having good tool cutting resistance such as stainless steel, and the housing recess 3 c is closed by the cover plate 16.

  Further, the upper end portion of the housing 3a (hereinafter, in this specification, the upper and lower sides are defined with reference to the mounting posture to the apparatus housing 1 shown in FIG. 1, the door 2 side is defined as “front”, and the apparatus depth direction is defined as “ In this case, a fitting recess 11 is formed which is opened in the horizontal direction so that the locked portion 5 of the coupled body 4 can enter when the door is closed.

  As shown in FIGS. 3 and 4, the door detection body 7 is formed of a housing and is attached to the lower end of the housing 3 a so as to be movable in the front-rear direction. The door detector 7 is urged forward by the compression spring 7a, that is, toward the door non-detection position where the front end protrudes from the housing 3a. The door detector 7 is guided in the translational direction by slidably fitting both ends of a pivot shaft 13a of a drive cam 13 described later into guide holes 17 provided in the housing 3a and the cover plate 16.

  The lock body 6 is a long casing in the vertical direction, and is held so as to be movable in the vertical direction with respect to the housing 3a. A lock plate 18 is fixed to the lower end of the lock body 6, and is driven between the lock release position shown in FIG. 3 and the lock position shown in FIG. The lock body 6 is urged toward the end of the lower end stroke, that is, toward the unlock position by a compression spring 6a interposed between the lock plate 18 and the housing 3a. Further, in order to prevent the lock body 6 from being cantilevered at the lock position and improve the strength, the housing 3a is provided with a holding hole 19 into which the upper end portion of the lock body 6 is fitted at the lock position. The

  As shown in FIG. 3, the lock operation unit 8 that drives the lock body 6 includes a drive cam 13 that is coupled to the door detection body 7 and a lever 12 that is disposed below the lock plate 18.

  As shown in FIG. 4, the drive cam 13 is formed by bending a plate material, and a locking hook 13b is formed at the upper part of the rear end. The drive cam 13 is rotatably connected to a large-diameter portion 7b formed at an intermediate portion of the door detector 7 using a pivot 13a. As shown in FIG. 4A, the drive cam 13 is lowered forward, that is, the interference rotation posture in which the locking hook 13b jumps upward, and the locking hook 13b is rotated in interference as shown in FIG. It is rotatable between the interference release rotation posture moved obliquely downward with respect to the posture, and is urged toward the interference rotation posture side by a torsion spring 13c wound around the pivot 13a.

  As shown in FIGS. 3 and 5, the front end of the lever 12 is pivotally supported by a pivot 12a so as to be vertically rotatable. A guide pin 12b is fixed to the rear end of the lever 12, and the rotation path is restricted by inserting one end of the guide pin 12b into a curvature guide hole 16a formed in the cover plate 16 so as to be slidable. As shown in FIG. 3 (a), the lever 12 is rotatable from a substantially horizontal unlocking rotation position to a locking rotation position where the rear end is rotated upward as shown in FIG. 8 (a). It is biased toward the unlocking rotation position by a torsion spring 12c wound around 12a.

  Further, an interference projection 12d is provided on the lower edge of the front end portion of the lever 12 so as to project downward. As shown in FIG. 3A, the interference protrusion 12d is set at a position that interferes with the movement path of the locking hook 13b when the drive cam 13 is in the interference rotation posture.

  As shown in FIGS. 2 and 3, the cylinder lock 10 is formed by rotatably inserting a plug 10b into a cylinder case 10a. This cylinder lock 10 has a vertical posture in which the head where the key insertion opening is formed faces downward so that rainwater, dust, etc. are less likely to enter inside even when the vending machine is installed outdoors. The cylinder cam 20 is connected to the end of the plug 10b.

  As shown in FIG. 6, the cylinder cam 20 is a cylindrical body having a cam projection 20a on the upper surface, and the connecting shaft 10c at the end of the plug 10b is inserted into the connecting hole 21 formed in the center. As shown in FIG. 6 (a), the connecting shaft 10c of the plug 10b has a small judgment surface shape in which a pair of flat portions 10d and 10d parallel to the opposite side wall of the cylindrical body is formed, and the flat portion of the connecting hole 21 The flat part 10d on the plug side is made to correspond to 21a, and both are connected in the rotation direction. Further, an appropriate play angle (θ) is set between the plug 10 b and the cylinder cam 20.

  6 (a), 6 (b) and 6 (c) show the relationship between the locking / unlocking rotation position of the plug 10b and the cylinder cam 20, FIG. 6 (a) shows the locking state of the cylinder lock 10, and FIG. 6 (b) shows the unlocking. State (c) shows a state in which the cylinder cam 20 is idled by an amount corresponding to the play angle in the locked state.

  As shown in FIG. 6 (e), the cylinder lock 10 and the cylinder cam 20 are arranged on the sides of the lock body 6 and the lock plate 18, and a stopper body 9 is laminated on the upper surface of the cylinder cam 20. . The stopper body 9 is formed in a plate shape, and is mounted by inserting the cam projection 20a of the cylinder cam 20 into the rectangular cam opening 9a.

  As shown in FIG. 6D, the end of the stopper body 9 on the side of the lock body 6 is bent upward to form a stopper piece 9b. As shown by the solid line in FIG. 6D, the stopper piece 9b interferes with the bent piece 18a of the lock plate 18 when the lock body 6 is in the unlocked position, and as shown by the chain line in FIG. 6D. When the lock body 6 is raised to the lock position, it has a bending height at which the interference is released.

  Further, a spring receiving rod 22 protruding in the direction of the cylinder cam 20 is fixed to the stopper piece 9b in a horizontal posture, and a compression spring 9c is mounted around the spring receiving rod 22. One end of the compression spring 9c contacts the stopper piece 9b and the other end contacts the housing 3a, and urges the stopper body 9 toward the lock body 6 side.

  6E, 6F, and 6G show the positions of the stopper body 9 corresponding to the cylinder cam 20 positions shown in FIGS. 6A, 6B, and 6C. As shown in FIGS. 6D and 6E, when the cylinder lock 10 is locked and the lock plate 18 is in the unlocked position, the stopper piece 9b is pressed against the bent piece 18a of the lock plate 18. In this state, as shown by a chain line in FIG. 6D, when the lock plate 18 is raised to the lock position, the stopper body 9 from which the interference with the lock plate 18 is released is shown in FIG. As shown in FIG. 4, the play angle θ of the cylinder cam 20 is used to move forward by the restoring force of the compression spring 9 c and is positioned below the lock plate 18. Further, when the cylinder lock 10 is unlocked from the states of FIGS. 6E and 6F, the stopper body 9 is retracted from the position of interference with the lock plate 18 as shown in FIG. 6G.

  The operation of the lock device configured as described above will be described with reference to FIG. First, when the door 2 is closed from the open state of the door 2, as shown in FIG. 7 (a), the locked portion 5 of the coupled body 4 enters the fitting recess 11 of the lock body 3, and eventually coupled. The pressing cover portion 14 of the body 4 contacts the door detection body 7. Further, when the door 2 is closed, as shown in FIG. 7B, after the drive cam 13 of the door detector 7 abuts against the interference projection 12d of the lever 12, the interference projection 12d of the lever 12 is moved backward, That is, it pushes in the door detection position side. As shown in FIG. 7C, the lever 12 rotates around the pivot 12a by pushing the lever 12 into the interference projection 12d, and pushes the lock plate 18 upward by the rear end of the lever 12. As the lock plate 18 moves up, the lock body 6 enters the fitting recess 11 and is inserted into the through hole 5 a of the locked portion 5.

  As shown in FIG. 8A, the lever 12 rotates to the lock rotation position before the door detection body 7 moves to the door detection position set at the end of the pushing stroke, and raises the lock body 6 to the lock position. As the lock plate 18 moves up, the stopper body 9 is released from the interference with the lock plate 18 and moves forward as shown in FIG. 6 (f). Restricts movement to the release position.

  Thereafter, when the door 2 is further closed and the door detection body 7 is pushed backward, the lever 12 further rotates beyond the position where the drive cam 13 can be locked with the locking hook 13b and interferes with the locking hook 13b. The locking with the protrusion 12d is released. When the locking with the locking hook 13b is released, the lever 12 returns to the initial position, that is, the unlocking rotation position by the restoring force of the torsion spring 12c, as shown in FIG. 8B.

  To open the door 2 from this state, first, the cylinder lock 10 is operated to shift to the unlocked state. When the cylinder lock 10 shifts to the unlocked state, the stopper body 9 is retracted from the movement path of the lock plate 18 as shown in FIG. As a result, as shown in FIG. 8C, the lock body 6 biased toward the lock release position by the compression spring 6a loses its support and descends to the lock release position, and the restraint of the coupled body 4 is released. Thereafter, the door 2 can be opened.

  When the door 2 is opened from this state, as shown in FIG. 9A, the door detection body 7 released from the restraint by the pressing cover portion 14 with the detachment of the coupled body 4 is applied to the restoring force of the compression spring 7a. To move forward and reach the door detection position. As the door detector 7 moves forward, the upper surface of the drive cam 13 is pressed against the interference projection 12d of the lever 12 and rotates counterclockwise as shown in FIG. 9B. The interference protrusion 12d is exceeded and the initial state shown in FIG.

It is a perspective explanatory view showing a vending machine equipped with the present invention. It is a figure which shows this invention, (a) is a 2A direction arrow figure of FIG. 1 in the middle of closing operation, (b) is a 2B direction arrow figure of FIG. 2 (a) of a lock main body, (c) is a lock main body figure. It is a 2C direction arrow directional view in Fig.2 (a). It is a figure which shows a lock | rock main body, (a) is a figure which shows the state which fractured | ruptured the cover plate partially, (b) is a figure which shows a cover plate. It is a figure which shows a door detection body, (a) is a side view, (b) is a top view, (c) is a 4C-4C sectional view taken on the line (b), (d) is explanatory drawing which shows operation | movement of a drive cam. is there. It is a figure which shows the principal part of a lock | rock main body, (a) is the sectional view on the 4A-4A line of Fig.3 (a), (b) is the sectional view on the 4B-4B line of Fig.3 (a). It is a figure which shows operation | movement of a cylinder lock, (a) is explanatory drawing which shows the rotation position of the cylinder cam in a locking state, (b) is explanatory drawing which shows the rotation position of the cylinder cam in an unlocking state, (c) is a locking state (D) is an explanatory view showing the relationship with the operation of the stopper body, (e) is a view taken along the 6E direction of (d) corresponding to (a), and (f) is an explanatory view showing the action of the play angle in FIG. (D) 6E direction arrow view corresponding to (c), (g) is the (6) direction arrow view corresponding to (b). It is a figure which shows operation | movement of a locking device, (a) is a figure which shows the middle of door closing operation, (b) is a figure which shows the state which started the lock body by a drive cam, (c) is the state which further closed the door. FIG. It is a figure which shows operation | movement from lock operation completion of a locking device to lock release operation, (a) is a figure which shows the state by which the lock body was hold | maintained in the lock position, (b) is a figure which shows a lock completion state, (c) FIG. 8 is a diagram showing a state where the lock body has been moved to an unlock position by an unlocking operation. It is explanatory drawing which shows operation | movement of the locking device at the time of door opening, (a) is a figure which shows the state at the time of door opening start, (b) is a figure which shows the state which further opened the door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus housing 2 Door 3 Lock body 4 To-be-connected body 5 To-be-latched part 6 Lock body 7 Door detection body 8 Lock operation part 9 Stopper body 10 Cylinder lock 11 Fitting recessed part 12 Lever 13 Drive cam 14 Press cover part

Claims (5)

An apparatus housing, or a lock body fixed to one of the doors closing the opening of the apparatus housing; and a connected body fixed to the other and connected to the lock body in the closed state;
The lock body is
A lock body capable of locking a locked portion formed on the coupled body at a lock position and unlocking at a lock release position;
A door detector that is held at the door non-detection position by the urging force and that moves to the door detection position by interfering with the connected body or the connected body fixing side member in the closed state;
A lock operation unit that locks the lock body in the course of movement of the door detection body to the door detection position and drives to the lock position, and is released from the lock body at the door detection position;
A stopper body that engages with the lock body when the lock body moves to the lock position and restricts the movement of the lock body toward the unlock position;
A cylinder lock capable of driving the stopper body to an unlocking position with the lock body by an unlocking operation;
A locking device for doors.   The door locking device according to claim 1, wherein the lock body is biased toward the unlocking position.   3. The door locking device according to claim 1, wherein the lock body is a housing that moves forward and backward in a fitting recess into which a locked portion is fitted during a door closing operation. The lock operation unit is
The lock body can be rotated between a lock rotation position where the lock body can be driven to the lock position and a lock release rotation position corresponding to the lock release position of the lock body, and biased toward the lock release rotation position. Lever to be
The door detection body that translates to the door detection position has a drive cam that is rotatable between the interference rotation posture and the interference release rotation posture, and is urged and coupled to the interference rotation posture side.
4. The door locking device according to claim 1, wherein the lever interferes with a drive cam that moves to the door detection position side in an interference rotation posture and is driven to the lock rotation position. 5. The door locking device according to claim 1, wherein the connected body is formed with a pressing cover portion that contacts the door detection body of the lock body and moves to the door detection position in the closed state.

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