JP4627082B2 - Lock mechanism of the lift grinder door - Google Patents

Description

  The present invention relates to a lock mechanism for a lifting grinder door.

  A lift grinder provided on Pachinko Island generally includes a lift tower main body and a door that can be freely opened and closed. One end of the door is usually attached to the pumping tower main body via a hinge, and the other end is locked by a locking means. Therefore, when opening and closing the door for periodic inspection and maintenance, it is essential to operate the locking means. As the lock means employed in the door of the conventional lifting grinder, one that is installed at an appropriate interval in the lifting tower and is individually locked and unlocked is employed.

As described above, in the case of adopting the locking means for individual operation, the door opening / closing operation becomes troublesome because the locking or unlocking operation must be performed for each locking means during the door opening / closing operation. Yes. In particular, since the height of the normal lift tower reaches from the floor to the ceiling, the operation of the locking means installed at a high place can only be performed using a stepladder. The work is troublesome. In addition, the pachinko amusement arcade has a lift grinder for each of the many islands. While opening and closing the doors for each of these lift grinders, do not forget to lock incompletely or forget to lock. There can be nothing. In such a case, the pachinko balls being lifted are disengaged from the groove portion of the lifting mat, which causes deformation or damage to the lifting mat or the like.
JP 2000-93635 A JP-A-10-102874

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lock mechanism for a hoisting and polishing machine door that can be locked or unlocked by a single operation when a door of the hoisting and polishing machine is opened and closed, and at the same time a possible and reliable locked state is obtained. Is to provide at a low cost.

  In order to achieve the above object, the present invention is characterized in that the following means are employed to produce the following effects.

(Structure of the invention described in claim 1)
The invention described in claim 1 is configured as follows as a lock mechanism for a lifting grinder door that maintains a door that is openable and closable on one side of the lifting tower body in a locked state and an unlocked state. It is a thing. The structure of this lock mechanism is comprised of a plurality of hook levers that are swingably movable on one side of the main tower body and are engaged with and disengaged from lock pins provided on the door at one end. A tension spring attached between the hook lever and the tower body to urge the hook lever in the unlocking direction when unlocked, and a hook spring And a connecting bar provided in the vicinity so as to be movable up and down. The hook lever is swingably connected to the connecting bar via a connecting pin provided on the connecting bar on one end side, and the other end side is engaged and disengaged with a lock pin provided on the door. It is configured to be possible. Further, the hook lever, is provided on the upper part of the hook lever supporting member via a pivot pin provided on the hook lever support member swingably attached to a predetermined range in the lifting Okuto body. Further, the hook lever support member is configured to swing while resisting the biasing force of the tension spring by engagement of the lock pin and the engagement recess, and to return to swing by the biasing force by releasing the engagement. It is. There is a long hole provided in the vicinity of the lower end of the hook lever support member and a restriction pin that fits into the long hole provided in the main body of the lift tower, and the restriction pin is fitted into the long hole. Thus, the swing amount of the hook lever support member can be regulated. The connection bar is configured to swingably support one end portion of these hook levers, and to be able to swing a plurality of hook levers simultaneously by lifting and lowering operations.

(Operational effect of the invention described in claim 1)
In the configured door locking mechanism as described above, the hook lever, lifting Okuto body via a pivot pin to the hook lever support member swingably attached to a predetermined range on the hook lever support member By providing in the upper part of this, the engagement position of a lock pin and an engagement recessed part can be adjusted. That is, the hook lever support member is swingably attached to the lifting tower body, and the hook lever is supported by the hook lever support member and the swing amount of the hook lever support member is limited, so that the hook lever moves forward and backward. It is possible. In the present invention, the engagement between the lock pin and the engagement recess of the hook lever is performed more smoothly.

(Structure of the invention described in claim 2)
The invention described in claim 2 is the invention described in claim 1, wherein the hook lever is provided in the vicinity of each hook lever so as to be movable up and down, and the other end side of each hook lever is swingably supported. The connecting bar is further provided with a feature.

(Effects of the invention described in claim 2)
In the configured door locking mechanism as described above, the same time to oscillate the plurality of hook lever by vertical movement of the connecting Yuiba over, causing them to engage the locking pin of the door or is separated Can do. Since a plurality of locking means can be locked and unlocked by raising and lowering a single connecting bar, it is very convenient for employees of pachinko amusement halls that have to manage a large number of islands. In addition, the operation of the lock means installed at a high place cannot be reached unless a stepladder is used, and the lock operation is troublesome and it is difficult to check the locked state. Such an inconvenience can be prevented by adopting the present invention.

  According to the present invention, since a reliable locked state is ensured, there is no loss of the pachinko balls due to incomplete closing of the door, which causes a failure of the lift polishing machine. Further, if the fulcrum of the hook lever can be slid to cope with the positional deviation of the door, the locking operation at the time of closing the door can be performed more smoothly. Furthermore, if the connecting bar is adopted, a large number of locking means can be locked and unlocked by a single operation, so that the door opening / closing operation of the lifting grinder is facilitated. In particular, the locking means at a high place can be operated together with other locking means at a position standing on the floor, so that it is possible to avoid forgetting to lock.

(Configuration of the lift polishing machine)
Next, an embodiment of the present invention will be described with reference to the drawings. First, an outline of a lifting and polishing machine to which the door locking mechanism of the present invention is applied will be described with reference to FIG. This lifting and polishing machine is a so-called belt-type lifting and polishing machine that lifts and pachinko balls while holding and polishing between a pressing member such as a lifting mat and a lifting belt. As shown in the figure, this lifting grinder is hung between a door 5 that is openably and closably attached to a lifting tower body 3 standing on a base plate 1 and the upper and lower sides of this lifting tower. The lifting belt 7 is a main component. The pachinko ball B introduced into the lifting and polishing machine passes between the lifting belt 7 rotated by the motor 11 and a lifting mat (not shown) as a pressing member provided inside the door 5. It discharges from the discharge head 13 provided in the upper part of the lift polishing machine. The descending side of the lifting belt 7 is exposed on the back side of the lifting tower body 3, and the lower half is covered with a safety cover 15.

  The door 5 includes a single body as a whole and a door that is divided into upper and lower parts. Here, the door is a single body, that is, a door that is integrated from the bottom to the top of the lifting tower body 3. Will be described as being adopted. The door 5 is required to be securely closed and locked during the operation of the lift polishing machine. In this embodiment, however, the lock 5 enables the locking means L,. Locked by mechanism 19. Each of these locking means L,... Is locked and unlocked simultaneously by operating an opening / closing lever 21 provided at an easily operable position.

(Configuration of lock mechanism)
FIG. 1 is an enlarged view of the locking mechanism 19 described above. As shown in the drawing, the opening / closing lever 21 is formed of a thick plate formed in a “h” shape, the short piece side being a connecting portion 21a with the connecting bar 23, and the long piece side being a handle portion 21b for opening / closing operation. It has become. In addition, a connecting pin hole 21c made of a long hole along the longitudinal direction is provided in the vicinity of the distal end portion of the connecting part 21a. The opening / closing lever 21 is swingably supported by a support shaft 22 in the vicinity of a bent portion that becomes a boundary between the connecting portion 21a and the handle portion 21b. The connecting bar 23 is engaged with the connecting pin hole 21c via a first connecting pin 23a projecting from the back of the connecting bar, and can be moved up and down by swinging the open / close lever 21. . The first connecting pin hole 21c is a long hole so that a positional shift caused by the rotational movement of the opening / closing lever 21 and the linear movement of the connecting bar 23 can be adjusted.

  When the locking mechanism 19 is in the locked state, the opening / closing lever 21 has a space in a narrow island by allowing the handle portion 21b to be in a downward vertical state and the connecting portion 21a to be inclined. We are saving. On the other hand, when it is in the unlocked state, as shown by the imaginary line, the handle portion 21b is in the standing state. As will be described later, this standing state can be maintained by preventing it from falling down due to its own weight or the like. As a result, under the standing state of the open / close lever 21, the pachinko island door (not shown) can be closed only after the grinder door is locked. For this reason, it is possible to avoid a situation in which the door of the pachinko island is closed by overlooking that the door of the polishing machine is unlocked.

  The connecting bar 23 is formed by bending a thick steel plate having a length corresponding to almost the entire length of the lifting tower body 3 into an L-shaped cross section, and is necessary for opening and closing the door 5 on one side of the lifting tower body. It is mounted so that it can be raised and lowered within the range. Longitudinal grooves 23b,... Are provided at the main portions of the connecting bar 23 facing the lifting tower body 3, and the support pins 24 standing on the lifting tower body are loosened in these long grooves. It is inserted. As the support pin 24, a special bolt with a large head is used, and the connecting bar 23 is supported so as to be lifted by screwing it into a screw hole provided in one side of the lifting tower body 3. Further, between these long grooves 23b, 23b on the back surface of the connection bar 23, second connection pins 23c,... That can be engaged with connection holes 25b of the hook lever 25 described later project. As a result, the hook levers 25,... Can swing in conjunction with the up-and-down movement of the connecting bar 23.

(Configuration of locking means)
The lock means L mainly includes a hook lever 25, a lock pin 27, and a tension spring 29 as an urging means. As shown in FIGS. 1 and 3, the hook lever 25 is formed of a plate having a half-length member of the above-mentioned opening / closing lever 21 and formed in a “H” shape. And is swingably supported on one side of the lifting tower body 3. A fulcrum hole 25a is provided at the center of the bent portion of the hook lever 25, the connecting hole 25b is provided on the short piece side, and an engaging recess 25c and a spring latching part 25d are provided on the long piece side. These hook levers 25,... Are supported so as to be swingable by fitting a fulcrum hole 25a to a fulcrum pin 26 erected on one side of the tower main body.

  The fulcrum hole portion 25a is slidable with respect to the fulcrum pin 26 by forming a long hole parallel to the long piece side so that the hook lever 25 can be slightly displaced. Thereby, even if the door 5 has some distortion, it can be locked by absorbing this. The connecting hole portion 25b has a width that allows the second connecting pin 23c to be engaged with the connecting hole portion 25b, and absorbs misalignment caused by the swing movement of the hook lever 25 with respect to the linear motion of the connecting bar 23. There is a long hole. An engagement recess 25c with the lock pin 27 is formed on the lower side in the vicinity of the end on the long piece side of each hook lever. The engaging recess 25c is formed by notching the lower side near the end on the long piece side to a width that allows the lock pin 27 to be engaged.

  A tension spring 29 as an urging means is attached to the hook lever 25. The tension spring 29 includes a hooking portion 25d formed in the middle of the upper side of the long side of the hook lever 25, and a hooking tool (here, the support pin 24 also serves) implanted in the lifting tower body 3. It is caught between. Under the locked state as shown in FIG. 3A, the spring 29 biases the hook lever 25 in the counterclockwise direction (lock direction). Accordingly, since the engaging recess 25c is engaged with the lock pin 27 in the biased state, the hook lever 25 is unlikely to be unlocked due to vibration during operation or the like. Further, as shown in FIG. 3B, when the unlocked state is reached, the spring 29 is positioned on the right side of the fulcrum pin 26, so that the hook lever 25 is attached in the clockwise direction (unlock direction). It becomes possible. If the hook lever 25 is returned (inverted) to the locked position when unlocked, the front end may be blocked by the lock pin when the door is closed, and the hook lever 25 may not be locked smoothly. However, since the hook lever 25 is configured to maintain the state where the long side is lifted when unlocked, the hook lever 25 can be engaged (locked) without being obstructed by the lock pin 27 when the door is closed.

(Operation of this embodiment)
As described above, the connecting bar 23 is raised by the swinging of the opening / closing lever 21, whereby each hook lever 25 swings and the engaging recess 25 c engages with the lock pin 27, thereby enabling locking. Further, this is explained in detail as follows. First, when opening the door, if the handle portion 21b of the open / close lever 21 is lifted to the state shown by the imaginary line in FIG. 1, the connecting portion 21a is lowered accordingly, so the first connecting pin The connecting bar 23 descends through 23a. Since this downward amount is regulated by the long groove 23b, the rotation of the opening / closing lever 21 is also regulated correspondingly. When the connecting bar 23 is lowered, the hook lever 25 is rotated in the clockwise direction via the second connecting pin 23c, and the engagement between the engaging recess 25c and the lock pin 27 is released to be unlocked. When the opening / closing lever 21 is further lifted, the hook lever 25 is raised as shown in FIG. At this time, since the tension spring 29 is displaced closer to the connecting bar than the fulcrum pin 26 of the hook lever, the hook lever is urged clockwise. As a result, the hook lever 25 does not turn in the closing direction unless the handle 21b of the opening / closing lever 21 is tilted, so that the unlocked state can be maintained.

  The opening / closing lever 21 can be interlocked with each hook lever 25 via the connecting bar 23. Therefore, when the hook lever 25 is unlocked, the opening / closing lever 21 is in an upright state. As described above, when the hook lever can maintain the unlocked state, the handle portion 21b of the opening / closing lever 21 similarly maintains the standing state. Next, when the door 5 is locked, after the door is completely closed, if the handle portion 21b of the opening / closing lever 21 is turned counterclockwise and tilted, the connecting bar 23 is opposite to the case of opening the door. As a result, all the hook levers 25,... Rotate counterclockwise, and the engagement recesses 25c engage with the lock pins 27, thereby completing the lock. Further, in this locked state, the long piece of the hook lever is urged counterclockwise by the tension spring 29, so that it is difficult for the locked state to be lifted by vibration or the like. .

(Other configurations of locking means)
As another embodiment, a description will be given of the locking means L2 that is easy to lock the polishing machine door by deforming the locking means L shown in FIG. The lock means L2 has the same basic configuration as the lock means L described above, but as shown in FIG. 4, a hook lever 55 is provided on an upper portion of a hook lever support member (hereinafter referred to as “support member”) 65. There are some features. The support member 65 is made of a plate material having substantially the same width as the hook lever. The center portion of the plate material is swingably supported by a support shaft 66, and a restriction pin 67 is inserted into a long hole 65a provided near the lower end portion. The amount of oscillation can be regulated by fitting. With this configuration, the hook lever 55 attached to the upper part can be moved back and forth with respect to the lock pin 57 within the swing range of the fulcrum pin 56, so that it is possible to absorb inconsistencies due to door misalignment or the like. It becomes.

  In the above description, it is assumed that a tension spring is attached to each hook lever. However, each hook lever can be interlocked via a connecting bar, and can be kept locked by its own weight. For example, it is possible to make the lock release difficult due to vibration of the lifting grinder, etc. Therefore, installation of a tension spring is not essential. However, since it also serves as means for maintaining the unlocked state and the above-described open / close lever standing state, it is desirable that at least one is attached. Further, although the present invention has been described as relating to a door locking mechanism of a belt type lift polishing machine, the present invention is not limited to this and can be applied to other types of lift polishing machines in general. is there. Further, although the description has been made assuming that there is only one door, this may be two or more upper and lower, and in this case, a lock mechanism may be provided for each door.

It is a front view which shows one example of embodiment. It is a side view which shows the raising polishing machine which employ | adopted the lock mechanism. It is an enlarged view of the locking means of one embodiment, (a) is a locked state, (b) is a front view showing an unlocked state. FIG. 9 is an enlarged view of another embodiment of the locking means, where (a) is a locked state and (b) is a front view showing an unlocked state.

3 Lifting tower body 5 Door 19 Lock mechanism L, L2 Lock means 21 Open / close lever 22 Support shaft 23, 53 Connection bar 23a, 23c Connection pin 25, 55 Hook lever 25a Support hole 25b, 55b Connection hole 25c, 55c Joint recess 26, 56 Support pin 27, 57 Lock pin 29, 59 Biasing means (tension spring)
65 Hook lever support member

Claims (2)

It is a lock mechanism for the lifting grinder door that maintains the lifting tower main body and the door that can be freely opened and closed on one side of the lifting tower main body in a locked state and an unlocked state,
A plurality of hook levers provided on one side of the above-mentioned lifting tower main body so as to be swingable, and provided with engaging recesses that can be respectively engaged with and separated from lock pins provided on the door on one end side;
A tension spring attached between the hook lever and the lifting tower body to urge the hook lever in the unlocking direction when unlocked in the locked state;
The hook lever is provided on an upper portion of the hook lever support member via a fulcrum pin provided on the hook lever support member that is swingably attached to the lifting tower main body within a predetermined range.
The hook lever support member is configured to swing while resisting the biasing force of the tension spring by the engagement of the lock pin and the engagement recess, and to swing back by the biasing force by releasing the engagement. Oh it is,
An elongated hole is provided near the lower end of the hook lever support member,
A restriction pin that fits into the elongated hole is provided in the pumping tower body,
A lock mechanism for a lifting and polishing machine door, wherein the amount of swinging of the hook lever support member can be regulated by fitting the regulation pin into the elongated hole . 2. The connecting bar according to claim 1, further comprising a connecting bar that is provided in the vicinity of each hook lever so as to be movable up and down, and that pivotably supports the other end of each hook lever. Locking mechanism for the lifting and polishing machine door.

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