JP4632928B2 - Door lock device - Google Patents

Description

  The present invention relates to a door locking device.

  As a door locking device for locking a door of a vending machine or the like, as described in Patent Documents 1 and 2, the device housing and the door are connected by a chain or a lock rod in the locked state. There are proposed ones that restrict the opening of the door 6 and, as described in Patent Document 3, a specification that holds the lock lever connected to the lock body side at the lock position on the front surface of the door and restricts the opening of the door. ing.

  Comparing these two types of specifications, the former can be expected to have higher fracture resistance than the latter in order to completely connect the door and the device housing, but has the disadvantage of requiring processing into the door. However, the latter does not require processing of the door, but a large bending moment is applied to the cantilevered lock lever when the door is forcibly opened or the lock lever is rotated to the unlocked position side. In addition, there is a problem that the fracture strength as high as the former cannot be expected.

  Thus, both have advantages and disadvantages, so the specifications of the locking device are selected according to the usage environment in consideration of the desired breaking strength or design, but the door lock is easy to change between the two specifications. If the device exists, the manufacturing cost can be reduced.

  In order to increase the possibility of conversion in manufacturing between both specifications, it is effective to make it possible to share a lock case that is used in common between both specifications. In this case, a chain or the like is used in the former lock body. The lock case can be shared by connecting the lock lever directly to the shaft rod to be coupled and restrained, and changing the mechanism so that the rotation of the shaft rod can be restricted by the cylinder lock.

  However, in the above-described locking device, when an improper operating force is applied to the unlock position side, a large moment is generated at the rotation base end of the lock lever, i.e., the cylinder lock, so that the fracture resistance is low. There's a problem.

On the other hand, the latter locking device (Patent Document 3) rotates the lock lever around the hinge of the body fixed to the device housing 1 and the cylinder lock is arranged on the lock lever side. It is completely incompatible with the former specification, and the original purpose cannot be achieved at all.
Japanese Patent Laid-Open No. 9-235924 JP 2003-184385 A Japanese Patent Laid-Open No. 2002-4668

  The present invention has been made to solve the above-described problems, and has high strength against an unauthorized rotation operation toward the unlock position, and can be easily converted into a lock device having a specification using a chain or the like. The purpose is to provide a door locking device.

According to the present invention, the object is
A lock body 4 containing a cylinder lock 3 in a lock case 2 fixed to the side wall of the apparatus housing 1;
A lock lever 5 that is non-detachably connected to the lock body 4;
The lock lever 5 can move from a lock position that interferes with the opening locus of the door 6 to restrict the opening operation of the door 6 to an unlock position that releases the restriction of the door opening operation, and is unlocked at the lock position. A locking device for a door in which the interference by the interference unit 7 is released at a rotation-permitted position that is translated from the lock position.
The lock lever 5 is held by the lock case 2 and is inserted into a shaft rod 9 erected in a fitting recess 8 formed in the lock case 2 by inserting a hook- shaped hook insertion hole 10 into the lock body 4. The shaft rod 9 can be rotated about the shaft rod 9 and can be translated by moving the shaft rod 9 in any one of the circular holes 10a connected through the constricted portion 10b of the rod insertion hole 10. As
The shaft rod 9 has an oval cross-sectional shape in which a pair of plane portions 9a are formed, and is rotationally driven by the cylinder lock 3. The plane portion 9a faces the constricted portion 10b and translates in the rod insertion hole 10. Movable between a restriction position where movement is restricted and a permissible position where the flat surface portion 9a is released along the constricted portion 10b ;
Alternatively, the shaft rod 9 has a stepped pin shape in which a thin diameter portion 9c is formed, and is driven forward and backward by the cylinder lock 3, and the small diameter portion 9c is retracted from the collar insertion hole 10 by the constricted portion 10b. Between the restriction position where the translational movement in the heel insertion hole 10 is restricted and the allowable position where the narrow diameter portion 9c enters the heel insertion hole 10 so as to be able to pass through the constriction part 10b. This is accomplished by providing a movable door locking device.

  The lock lever 5 of the lock device can regulate the opening operation of the door 6 by holding the lock lever 5 connected to the lock body 4 side in the lock position. The shaft rod 9 on the side of the lock body 4 is connected to each other through the rod insertion hole 10 of the lock lever 5. The lock body 4 receives one end of the lock lever 5 in the fitting recess 8 formed in the lock case 2 and inserts the shaft rod 9 into the hook insertion hole 10 so as to connect the lock lever 5 so as not to be detached.

  In addition to the fitting recess 8, the lock case 2 of the present invention is provided with a receiving portion for the relay mechanism 12 for converting the operation of the shaft rod 9, the cylinder lock 3 and the cylinder lock 3 into the operation of the shaft rod 9. The relay mechanism 12, the shaft rod 9, and if necessary, the housing space of the relay mechanism 12 can be used as the lock case 2 of the above-described chain-type door locking device only by deforming it by post-processing.

  The lock lever 5 is restricted from moving to the unlock position side by causing the lock lever 5 to interfere with the interference portion 7 provided in the lock case 2 at the lock position. As a result, the generation of bending stress at the rotation base end is reduced, the strength against an unauthorized rotation operation toward the unlock position side is increased, and the necessary fracture strength can be obtained.

  ADVANTAGE OF THE INVENTION According to this invention, the intensity | strength with respect to the unauthorized rotation operation to the lock release position side can be improved, and conversion to the locking device of the specification using a chain etc. can be performed easily.

  FIG. 1 shows an embodiment of the present invention configured for a vending machine. The door locking device is configured by connecting a lock lever 5 to a lock body 4 fixed to a side wall of a device housing 1 of a vending machine. The lock lever 5 is formed in a hook shape by bending the door restricting portion 5b at the tip of the holding portion 5a, and the door restricting portion 5b is formed on the front surface of the door 6 as shown in FIGS. 1 (a) and 1 (b). A movement operation is performed between a lock position where the door 6 is opened and the opening of the door 6 is restricted, and an unlock position where the door restriction portion 5b is retracted to the side of the apparatus housing 1 as shown in FIG. Can do.

  In this embodiment, in addition to directly restricting the opening operation of the door 6, the locking device also has the purpose of restricting access to the door locking cylinder lock 13 attached to the door 6. As shown to (a), the door control part 5b is installed in the position which can prevent the unauthorized unlocking operation to the cylinder lock 13 facing the said door locking cylinder lock 13 in a locked position.

  The lock lever 5 is formed of, for example, a material having excellent cutting resistance such as stainless steel, and the shaft rod 9 is inserted into the rod insertion hole 10 formed near the end of the holding portion 5a as shown in FIG. And connected to the lock body 4. The eaves insertion hole 10 has a eaves shape in which two circular holes 10a arranged in the longitudinal direction of the holding portion 5a are connected via a constricted portion 10b.

  As shown in FIGS. 1 to 3, the lock body 4 is formed by holding a cylinder lock 3, a relay mechanism 12, and a shaft rod 9 in a lock case 2. The lock case 2 is formed in a rectangular parallelepiped shape that is long in the vertical direction (in this specification, “upper and lower” is defined with reference to a fixed state to the device housing 1, and the door 6 side of the device housing 1 is defined as “front”. .), A cylinder accommodating portion 2a for accommodating the cylinder lock 3 in a posture in which the key insertion port 3a is directed downward is opened at the lower end portion. A fixing means (not shown) for preventing the cylinder lock 3 from being detached is disposed in the cylinder housing portion 2a.

  Further, a notch-shaped fitting recess 8 is formed at the upper end of the lock case 2. The fitting recess 8 is opened in the front-rear direction, and an arcuate lever escape recess 8a is formed on the side wall.

  Upper and lower ridge holding holes 8b and 8c are formed in the ceiling wall and the bottom wall of the fitting recess 8. The lower rod holding hole 8c opened in the bottom wall of the fitting recess 8 communicates with the relay portion accommodating portion 2b communicating with the upper portion of the cylinder accommodating portion 2a. The upper and lower portion rod holding holes 8b, 8c are connected to the shaft rod. It arrange | positions on the same perpendicular line so that 9 can be hold | maintained with a vertical attitude | position. Further, as shown in FIG. 3A, the center lines of the upper and lower flange holding holes 8c are arranged slightly offset laterally with respect to the rotation center of the plug of the cylinder lock 3 to be described later. (Displacement amount δ), consideration is given so that the distance between the shaft rod 9 and the side wall of the fitting recess 8 is as large as possible.

  In this embodiment, in consideration of workability, the cylinder housing portion 2a and the relay portion housing portion 2b have the same cross-sectional shape and are formed in a single continuous cylindrical shape as a whole.

  As shown in FIG. 3, the shaft rod 9 is a rod-shaped member whose upper end is fitted into the upper rod holding hole 8 b of the lock case 2, and penetrates the lower rod holding hole 8 c to reach the relay portion accommodating portion 2 b. Moreover, the part corresponding to the fitting recess 8 of the shaft rod 9 has an oval cross-sectional shape in which a pair of parallel flat portions 9a are formed so as to chamfer the peripheral wall of the cylindrical cross section. The arc diameter of the oval cross-sectional shape portion is slightly larger than the diameter of the circular hole 10a of the heel insertion hole 10, and the interval between the flat surface portions 9a and 9a can be inserted through the constricted portion 10b of the heel insertion hole 10. Formed.

  The lock lever 5 configured as described above receives the shaft rod 9 in the forward circular hole 10a at the lock position shown in FIG. In this state, the rear end edge of the lock lever 5 comes into contact with the rear end portion of the side wall of the fitting concave portion 8. It functions as the interference unit 7 to restrict the rotation operation of the lock lever 5.

  On the other hand, as will be described later, the shaft rod 9 is rotationally driven by the operation of the cylinder lock 3, and when the cylinder lock 3 is in the locked state, the flat portion 9a of the shaft rod 9 is constricted as shown in FIG. 10b and restricts translational movement of the lock lever 5 forward.

  On the other hand, when the cylinder lock 3 is in the unlocked position, as shown in FIG. 2 (b), the shaft rod 9 moves the lock lever 5 forward so that the flat surface portion 9a takes a rotational posture along the constricted portion 10b. The shaft rod 9 can be moved into the front circular hole 10a. This position is a rotation allowable position, and in the rotation allowable position, as shown in FIG. 2B, the lock lever 5 is released from the interference with the interference portion 7 at the rear end portion. As shown in c), the rear end can rotate to the unlock position while moving along the lever escape recess 8a.

  The cylinder lock 3 is formed by inserting the plug 3c into the cylinder case 3b so as to be able to rotate. The relay mechanism 12 for transmitting the rotational operation force to the plug 3c to the shaft 9 uses the relay portion receiving portion 2b. Stored. In this embodiment, the relay mechanism 12 includes a columnar first rotating body 12a that is rotationally driven by a plug 3c, and a second rotating body 12b that is interposed between the shaft 9 and the first rotating body 12a. It is comprised. The first rotating body 12a is accommodated in the relay accommodating portion 2b so as to be horizontally rotatable, and is connected to the terminal end of the plug 3c by a connecting hole 12c opened at the lower end.

  The second rotator 12b has a disc shape and is accommodated in a rotator accommodating recess 12d provided at the upper end of the first rotator 12a. The front and back surfaces of the second rotating body 12b are provided with ridges 12e and 12f that are orthogonal to each other in plan view, and the ridge 12f on the back surface slides into a groove 12g that is recessed in the bottom wall of the rotating body housing recess 12d. Fits freely.

  Further, a recess 12h is formed on the lower end surface of the shaft rod 9, and the protrusion 12e on the surface side of the second rotating body 12b is slidably fitted to constitute an Oldham joint as a whole.

  Therefore, in this embodiment, when the plug 3c is rotated in the unlocking direction from the locking rotation position shown in FIGS. 3, 4 (a), (b), as shown in FIGS. 4 (c), (d), When the rotational operating force is transmitted between the eccentrically parallel plug 2c and the shaft rod 9, and the plug 3c reaches the unlocking rotation position, FIG. 5 and FIG. 4 (e), ( As shown in f), the shaft 9 rotates 90 °. Thereafter, as described above, after the lock lever 5 is slid once and translated to the rotation allowable position, the lock lever 5 can be rotated around the shaft 9 and moved to the unlock position.

  Further, the lock case 2 and the cylinder lock 3 used in this embodiment are used as they are, and the relay mechanism 12 is changed so that the shaft rod 9 can be advanced and retracted into the fitting recess 8 by the locking and unlocking operation of the plug 3c. Then, it is possible to change to a type of locking device in which the shaft or the like is inserted with the shaft rod 9 retracted from the fitting recess 8 and the shaft rod 9 is protruded in the locked state and the chain end is restrained so as not to be removed. .

  6 and 7 show modifications of the lock body 4. In the description of this modified example and other embodiments described below, components that are substantially the same as those of the above-described embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted.

  This modification shows a modification of the relay mechanism 12 in the above-described embodiment. The relay mechanism 12 is connected to the plug 3c in the rotational direction and accommodates the cylindrical body 12j accommodated in the relay part accommodating part 2b and the shaft. It has the disc part 12k formed in the lower end of the collar 9, and several bearing balls 12m, 12m .... The disc portion 12k of the shaft rod 9 is loosely fitted into a rotating body accommodation recess 12d provided in the upper surface of the cylindrical body 12j, and a gap between the rotating body accommodation recess 12d and the disc portion 12k is filled with a bearing ball 12m. The shaft rod 9 and the cylindrical body 12j are coupled to each other in the rotational direction through a pin 12p that passes through the shaft rod 9 and has one end loosely fitted in a coupling hole 12n formed in the wall surface of the rotating body housing recess 12d. The

  Therefore, in this modification, as shown in FIG. 6, when the plug 3c is in the locking rotation position, the shaft 9 takes a rotation position where the lock lever 5 cannot slide. When the plug 3c is rotated to the unlocking rotation position side from this state, as shown in FIG. 7 (c), the lateral pressing force generated by the shift of the rotation center between the cylindrical body 12j and the shaft rod 9 is increased. Since the increase in the sliding resistance of the shaft 9 resulting from this is restricted by the bearing ball 12m, the shaft 9 also rotates smoothly and moves to a rotation position where the lock lever 5 can slide.

  8 to 10 show another embodiment of the present invention. In this embodiment, the relay mechanism 12 includes a cylindrical cam (cam 11) and a slider 12q. The cylindrical cam 11 is formed in a bottomed cylindrical shape and is accommodated in the relay portion accommodating portion 2b so as to be horizontally rotatable. This cylindrical cam 11 has a cam long hole 12r extending in an oblique direction in the peripheral wall, and a plug 3c is connected to the bottom wall.

  The slider 12q has a disk shape and is connected to the lower end of the shaft rod 9, and a pin 12s is erected on the side wall. The slider 12q is slidably inserted into the cylindrical cam 11, and the free end of the pin 12s passes through the cam long hole 12r of the cylindrical cam 11 and is inserted into the long hole 12t that is long in the vertical direction provided in the lock case 2. Is movably inserted.

  As shown in FIG. 8, the shaft rod 9 is formed in a stepped pin shape having a small diameter portion 9c at the upper end of the general portion 9b. The shaft 9 is inserted into the circular hole 10a of the lock lever 5, and the narrow diameter portion 9c is formed to have a diameter that can pass through the constricted portion 10b.

  Therefore, in this embodiment, when the plug 3c is in the locking rotation position, as shown in FIG. 8, the shaft rod 9 is pushed up to the end of the upper stroke by the cylindrical cam 11, and the general portion is placed in the circular hole 10a. 9b is located. As shown in FIG. 10A, in this state, the lock lever 5 is restricted from translational movement to the rotation allowable position and is held at the lock position.

  When the plug 3c is rotated to the unlocking rotation position side from now on, the shaft rod 9 is pulled downward along with the rotation of the cam 11, and reaches the end of the lower stroke at the unlocking rotation position (see FIG. 9). As shown in FIG. 10B, in the unlocked position, the small diameter portion 9c corresponds to the circular hole 10a, and the lock lever 5 can be rotated to the unlocked position after translational movement.

It is a figure which shows this invention, (a) is a front view of the state attached to the vending machine, (b) is a 1B direction arrow view of (a), (c) is a 1C direction arrow view of (a), (D) is a figure corresponding to (b) in an unlocked state. FIGS. 2A-2A are cross-sectional views taken along the line 2A-2A in FIG. 1A in the locked position, and FIG. 1B are 2A-2A in FIG. Line sectional drawing, (c) is sectional drawing which shows the middle of the movement to an unlocking position. It is sectional drawing of a locking device, (a) is the sectional view on the 3A-3A line of Fig.2 (a) in a locked state, (b) is the sectional view on the 3B-3B line of Fig.2 (a). 4A and 4B are views showing the operation of the relay mechanism, in which FIG. 3A is a sectional view taken along the line 4A-4A in FIG. 3A in a locked state, FIG. 3B is a sectional view taken along the line 4B-4B in FIG. 4D is a cross-sectional view corresponding to FIG. 4A during unlocking, FIG. 4D is a cross-sectional view corresponding to FIG. 4B, FIG. 4E is a cross-sectional view corresponding to FIG. FIG. 6 is a cross-sectional view corresponding to (b). It is sectional drawing in an unlocked state, (a) is a figure corresponding to Fig.3 (a), (b) is a figure corresponding to FIG.3 (b). FIGS. 3A and 3B are diagrams showing a modification of FIG. 3, in which FIG. 3A corresponds to FIG. 3A in a locked state, FIG. 3B corresponds to FIG. 3B, and FIG. FIG. 6 is a sectional view taken along line 6C-6C. 6A and 6B are diagrams showing the unlocked state of FIG. 6, in which FIG. 6A is a cross-sectional view corresponding to FIG. 6A, FIG. 6B is a cross-sectional view corresponding to FIG. It is sectional drawing corresponding to. It is a figure which shows other embodiment of this invention, (a) is sectional drawing corresponding to FIG. 3 (a) in a locked state, (b) is sectional drawing corresponding to FIG.3 (b), (c) is FIG. It is a side view of a cam. It is sectional drawing in an unlocked state, (a) is a figure corresponding to Fig.8 (a), (b) is a figure corresponding to FIG.8 (b). It is sectional drawing in a locked state, (a) is a figure corresponding to Fig.2 (a), (b) is a figure corresponding to FIG.2 (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus housing 2 Lock case 3 Cylinder lock 4 Lock body 5 Lock lever 6 Door 7 Interference part 8 Fitting recessed part 9 Shaft 10 杆 Insertion hole 11 Cam

Claims (5)

A lock body containing a cylinder lock in a lock case fixed to the side wall of the device housing;
A lock lever that is non-detachably connected to the lock body,
The lock lever can move from a locked position that interferes with the opening locus of the door to restrict the opening operation of the door to an unlocked position that releases the restriction of the door opening operation, and rotates to the unlock side at the locked position. A door locking device whose movement is restricted by the interference part of the lock case and in which the interference by the interference part is released at the rotation allowable position translated from the lock position,
The lock lever is held in the lock case, rotational movement about the shaft rod to insertion is allowed by the lock body a杆挿hole gourd shape shaft rod is erected on the fitting within a recess formed in the lock casing It is possible to be translated and can be translated by moving the shaft rod in translation in any of the circular holes connected through the constriction of the rod insertion hole ,
The shaft rod has an oval cross-sectional shape in which a pair of plane portions are formed, and is rotationally driven by a cylinder lock. The plane portion faces the constricted portion , and translational movement in the rod insertion hole is restricted. Movable between the restriction position and the permissible position where the flat part is deregulated along the constriction ,
Alternatively, the shaft rod has a stepped pin shape in which a small diameter portion is formed, and is driven forward / backward by a cylinder lock, and the small diameter portion is retracted from the rod insertion hole, and the constricted portion causes the shaft rod to enter the hole insertion hole. A door locking device that is movable between a restriction position where translational movement is restricted and a permissible position where the narrow-diameter part enters the hook insertion hole so as to be able to pass through the constricted part and is released from restriction . The fitting recess is open at the start, end and one side,
The door locking device according to claim 1, wherein the lock lever penetrates through the fitting recess at the lock position, and the meat portion facing the open surface is used as the interference portion.   The door lock device according to claim 1 or 2, wherein the shaft rod and the cylinder lock are arranged in a positional relationship in which a central axis is parallel and eccentric. The restriction position and the allowable position of the shaft rod are set corresponding to the rotation angle around the axis center of the shaft rod,
The door locking device according to claim 3, wherein the rotational operation force to the cylinder lock is transmitted to the shaft rod through the Oldham coupling. The restriction position and the allowable position of the shaft rod are set corresponding to the advance and retreat positions in the fitting recess,
4. The door locking device according to claim 3, wherein the rotational operation force applied to the cylinder lock is converted into an axial movement force of the shaft rod through a cam.

Images