JP4181538B2 - Pachinko machine locking device - Google Patents

Description

  The present invention comprises a front frame attached in a single-opening manner to a machine frame of a pachinko machine, and a glass frame attached in a single-opening manner to the front frame, and the lock body is rotated in one direction. The present invention relates to a locking device for a pachinko machine that unlocks a glass frame and unlocks a front frame by rotating the lock body in the reverse direction.

A related locking device in a pachinko machine related to this is described in Patent Document 1.
As shown in FIG. 6, the pachinko machine 90 includes a front frame 94 attached to the machine base frame 92 in a single-open shape, and a glass frame 96 attached to the front frame 94 in a single-open shape. .
On the rotation free end side of the front frame 94, a pair of upper and lower engaging claws 94k used for locking the front frame 94, and the engaging claws 94k are moved between a locked position and an unlocked position. A movable lock plate (not shown) is attached.
Further, an engaging claw member 96k used for locking the glass frame 96 is mounted on the rotation free end side of the glass frame 96 so as to be movable between a locked position and an unlocked position.
Further, a cylinder lock 98 for sliding the movable lock plate or the like of the front frame 94 or the engaging claw member 96k of the glass frame 96 from the locked position to the unlocked position is mounted on the rotation free end side of the glass frame 96. Has been.

JP 2001-137512 A

According to the locking device of the pachinko machine described above, the movable portion of the locking device of the glass frame 96, that is, the engaging claw member 96k is attached to the glass frame 96, and the movable portion of the locking device of the front frame 94, that is, The movable lock plate and the engaging claw 94k are mounted on the front frame 94. For this reason, the mounting space for the game board 99 of the front frame 94 is narrowed by a space necessary for storing the movable part of the locking device in the glass frame 96 and the front frame 94. Therefore, there is a problem that it is difficult to attach a large game board 99 to the table frame 94.
The present invention has been made to solve the above-mentioned problems, and the technical problem of the present invention is to improve the mounting structure of the movable part in the locking device and to take a large space for mounting the game board on the front frame. Is to do so.

The above-described problems are solved by the inventions of the claims.
The invention of claim 1 includes a table frame attached in a single-opening manner to a machine frame of a pachinko machine, and a glass frame attached in a single-opening manner to the front frame, and rotates the lock body in one direction. Unlocking the glass frame and rotating the lock body in the reverse direction to unlock the front frame, the locking device of the pachinko machine, which is mounted on the machine frame, First, the glass frame locking engagement claw that is hung on the glass frame receiving bracket is moved in the unlocking direction by sliding against the elastic force from the locking position to the unlocking position by receiving the turning force in one direction of the main body. 1 and the movable lock plate, it slides also is mounted on the machine base frame, against the unlocking position to the elastic force from the locking position under the reverse rotational force of the lock body, receiving of the table frame the moving and table frame for locking engagement nail and the glass frame for locking engagement pawls applied to the metal in the unlocking direction Characterized in that a movable lock plate.

According to the present invention, the engaging claw for locking the glass frame and the first movable locking plate that are generally mounted on the front frame or the like, and the engaging claw for locking the front frame and the second movable locking plate on the machine frame side. It is a configuration to be mounted. For this reason, a space for attaching a movable part such as a movable lock plate of the locking device and an engaging claw on the front frame side becomes unnecessary, and a space for attaching a front panel game board or the like can be widened accordingly. Therefore, it is possible to attach a large game board to the front frame.
When the front frame is unlocked, the front frame locking engagement claw and the glass frame locking engagement claw are simultaneously moved in the unlocking direction by the second movable lock plate. That is, since the unlocking of the table frame and the unlocking of the glass frame are performed at the same time, the unlocking of the table frame is not hindered by the engaging claw for locking the glass frame mounted on the machine frame. .

According to the invention of claim 2, for glass frame locking engagement claw is first movable lock plate or the first movable lock plate or the second when the second movable lock plate slides until unlocked position from the locked position engage the movable lock plate, said first movable lock plate or said second movable locking plate is configured to have its engagement when returned from the unlocked position to the locked position is released, the first movable lock plate and in a state where the engagement is released between the second movable lock plate, said glass frame for locking engagement claw is characterized by a structure that is returned by the elastic force to the locking position from the unlocking position.
According to the invention of claim 3, between the front frame and the glass frame, the glass frame can be held in a closed state with a force weaker than human power so that the glass frame can be pulled out from the front frame. A mechanism is provided. For this reason, when a table frame is unlocked, there is no problem that a glass frame opens unexpectedly from the table frame.

  According to the present invention, it becomes possible to widen the mounting space for a game board or the like in the front frame, so that a large game board can be attached to the front frame.

  Hereinafter, the locking device of the pachinko machine according to Embodiment 1 of the present invention will be described based on FIGS. 1 to 5. Here, FIG. 1 is an overall front perspective view of a frame of a pachinko machine equipped with a locking device according to this embodiment, FIG. 2 is an overall perspective view of a movable part of the locking device according to this embodiment, and FIG. FIG. 4 is a schematic perspective view of the holding mechanism, and FIG. 5 is an exploded perspective view of the lock body (cylinder lock). The width direction of the pachinko machine is shown as the X direction, the front-rear direction as the Y direction, and the height direction as the Z direction.

As shown in FIG. 1, the pachinko machine 1 includes a machine base frame 2 that is formed in a substantially rectangular frame shape and serves as a main body case. A support frame 3 such as a game board (hereinafter referred to as a front frame 3) is attached to the front side of the machine base frame 2 through a hinge mechanism 2h so as to be openable and closable like a door. The table frame 3 is a frame to which main parts of a pachinko machine such as a game board and a control device (not shown) are attached. ing. A front plate (not shown) having a ball receiving tray or the like is attached to the lower side of the glass frame 5 in a single-open shape.
In the machine base frame 2, the movable part 20 of the locking device 10 is mounted on the right inner wall surface 2 e corresponding to the rotation free end side of the front frame 3. The locking device 10 is a device that locks the table frame 3 on the machine frame 2 and locks the glass frame 5, and its movable part 20 is mounted vertically along the right inner wall surface 2 e of the machine frame 2. Yes. As shown in FIGS. 2 and 3, the movable portion 20 of the locking device 10 unlocks the pair of upper and lower first engaging claws 21 used for locking the glass frame 5 and the first engaging claws 21. And a first movable lock plate 23 to be operated.

As shown in FIG. 1, the pair of upper and lower first engagement claws 21 are passed through the upper and lower insertion openings 3 u of the front frame 3, and are attached to the first receiving metal 15 formed on the back side of the glass frame 5. On the other hand, it is configured to be hung from above (see the one-dot chain line in FIG. 1). As shown in FIGS. 2 and 3, each of the first engaging claws 21 is formed with an inclined surface 21k on the lower side of the tip portion, and the glass frame 5 is positioned at a position closer to the center than the inclined surface 21k. A notch 21c that can be engaged with the first metal fitting 15 is formed.
Each of the first engaging claws 21 is connected to the right inner wall surface 2e of the machine base frame 2 in a state in which the substantially central portion thereof can be turned up and down by a first lock pin 21r. Furthermore, the base end part of each 1st engaging claw 21 is connected with the vertical short board 22 in the state which can be rotated up and down similarly by the connection pin 21x. In FIG. 3B, the upper vertical short plate 22 appears as a whole by omitting the upper end of the second movable lock plate 34 (described later).

As shown in FIG. 3B, the upper vertical short plate 22 is formed with a spring receiver 22b at the upper end, and is biased in the direction of pulling up the vertical short plate 22 to the spring receiver 22b. The lower end of the first spring 25 is hung. The upper end of the first spring 25 is hung on a first spring receiver 2 f formed on the right inner wall surface 2 e of the machine frame 2. For this reason, the upper first engaging claw 21 has the upper vertical short plate 22 pulled up to the upper limit position by the spring force of the first spring 25, so that the periphery of the first lock pin 21r in the right direction in the figure. It rotates and is hold | maintained in the position (locking position) which can engage with the 1st receiving metal fitting 15 of the glass frame 5 (refer FIG. 2, FIG. 3).
A vertically long hole 22h is formed at the lower end of the upper vertical short plate 22, and the connecting pin 23u of the first movable lock plate 23 is passed through the vertically long hole 22h.

As shown in FIG. 2 (A), a spring receiver 22b is formed on the rear end side at the lower center of the lower vertical short plate 22. The direction in which the vertical short plate 22 is pulled up to the spring receiver 22b. The lower end of the second spring 26 biased by is hung. The upper end of the second spring 26 is hung on a second spring receiver 2j provided on the right inner wall surface 2e of the machine frame 2. For this reason, the lower first engaging claw 21 has the lower vertical short plate 22 pulled up to the upper limit position by the spring force of the second spring 26, so that the right side of the first locking pin 21r in the drawing is It rotates and is held at a position (locking position) where the glass frame 5 can be engaged with the first metal fitting 15.
A vertically long hole 22h (not shown) is formed in the upper end portion of the lower vertical short plate 22, and a connecting pin 23u (not shown) of the first movable lock plate 23 is passed through the vertically long hole.

The first movable lock plate 23 receives the left rotational force of a cylinder lock 50 (described later) and slides downward, and the upper and lower vertical short plates 22 resist the spring force of the first spring 25 and the second spring 26. To slide downward. As a result, the upper and lower first engaging claws 21 rotate to the left in the drawing around the first lock pin 21r, and the tip end portions of the first engaging claws 21 move upward so that the glass frame 5 Unlocking is performed.
As described above, the first movable lock plate 23 is provided with the connecting pins 23u that pass through the vertically long holes 22h of the vertical short plate 22 at the upper end portion and the lower end portion. Further, as shown in FIG. 2A, a spring receiver 23b is formed on the front end side at a position near the lower portion of the first movable lock plate 23, and the first movable lock plate 23 is pulled up to the spring receiver 23b. The lower end of the third spring 27 biased in the direction is hung. The upper end of the third spring 27 is hung on a third spring receiver 2 m provided on the right inner wall surface 2 e of the machine frame 2.

  Accordingly, the first movable lock plate 23 is held at the upper limit position by the spring force of the third spring 27. In this state, as shown in FIG. 3B, the upper and lower connecting pins 23u are upper and lower vertical types. It is in contact with the lower end of the vertically long hole 22 h formed in the short plate 22. Accordingly, when the first movable lock plate 23 slides downward from this state, the upper and lower vertical short plates 22 are pulled downward by the first movable lock plate 23 and slide downward, and the tip portions of the upper and lower first engaging claws 21 are moved. Pivots upward. Further, with the first movable lock plate 23 held at the upper limit position, the upper and lower vertical short plates 22 can be slid downward relative to the first movable lock plate 23 by the length of the vertically long hole 22h. (See FIG. 3B). For this reason, when the tip portions of the upper and lower first engaging claws 21 receive an upward force, the first engaging claws 21 are moved in the left direction (unlocking direction) in the figure regardless of the first movable lock plate 23. It can be turned.

As shown in FIGS. 2 (A) and 2 (B), a receiving plate 23p is bent at a right angle at the lower end of the center of the first movable lock plate 23. An arc-shaped long hole 23n is formed above the center of the receiving plate 23p (see FIG. 2B). The arc long hole 23n is a long hole through which the unlocking pin 52 of the cylinder lock 50 is passed. When the unlocking pin 52 moves downward by the key operation of the cylinder lock 50 in the counterclockwise direction, the unlocking pin 52 is moved. 52 is hung on the lower end of the arc-shaped long hole 23n, and the first movable lock plate 23 slides downward.
The cylinder lock 50 is a member for unlocking the glass frame 5 and unlocking the front frame 3 by a key operation, and is attached to the rotation free end side of the glass frame 5 as shown in FIG. As shown in FIG. 5, the cylinder lock 50 includes a base 53 fixed to the glass frame 5 and a lock body 51 attached to the base 53.

The lock body 51 is provided with a rotating shaft 51p that can be rotated to the left and right by a key operation, and an oval cam 51k is fixed at a right angle to the tip of the rotating shaft 51p. Further, an unlocking pin 52 is fixed to the surface of the cam 51k (on the opposite side of the rotating shaft 51p) in an eccentric state with respect to the rotating shaft 51p. For this reason, when the rotating shaft 51p rotates, the unlocking pin 52 moves in an arc along a circle whose radius is the eccentricity R.
The unlocking pin 52 is passed through a front opening 55 x of a slide 55 that can move up and down along the base 53. The lower side of the front opening 55x is formed in a flat V shape, and is configured to receive the unlocking pin 52 at the lower side. The slide 55 always receives an upward force due to the force of a spring (not shown), and pushes the unlocking pin 52 to the upper limit center position at the lower side center T of the opening 55x.

Here, in the locking device 10 which concerns on this embodiment, the cylinder lock 50 shown in FIG. 5 is attached to the glass frame 5 in the state rotated 90 degrees in the arrow direction. For this reason, in a state where the lock body 51 is not operated, the unlocking pin 52 is held at the center position (reference position) by the opening 55x of the slide 55 and the force of the spring (not shown). Then, when the lock main body 51 is key-operated in the counterclockwise direction, the unlocking pin 52 moves downward in an arc shape while moving the slide 55 against the spring force. Further, when the lock main body 51 is operated in the clockwise direction, the unlocking pin 52 moves upward in an arc shape while moving the slide 55 against the spring force.
The rotating shaft 51p and the unlocking pin 52 of the cylinder lock 50 are passed through the central opening 3c of the front frame 3 as shown in FIG. 1 with the glass frame 5 and the front frame 3 being closed. Further, the unlocking pin 52 of the cylinder lock 50 passed through the central opening 3c of the front frame 3 is an arc-shaped long hole 23n of the receiving plate 23p of the first movable locking plate 23 described above and a second movable locking plate described later. It passes through the arc-shaped long hole 34n of the 34 receiving plates 34p.

As shown in FIG. 2A, the second movable lock plate 34 is configured to be slidable up and down along the right inner wall surface 2e of the machine frame 2 outside the first movable lock plate 23. The second movable lock plate 34 slides upward in response to the right rotational force of the cylinder lock 50, and rotates the pair of upper and lower second engaging claws 32 used for locking the front frame 3 to the right in the figure. The tip portions of the second engaging claws 32 are moved downward.
As shown in FIG. 1, the pair of upper and lower second engaging claws 32 is configured to be hung from below on a second metal fitting 13 formed on the back side of the front frame 3 (one point in FIG. 1). (See chain line). As shown in FIGS. 2 and 3, each of the second engaging claws 32 is formed with an inclined surface 32k on the upper side of the tip portion, and the second engaging claw 32 has a second surface of the front frame 3 at a position closer to the center than the inclined surface 32k. A notch 32c that can be engaged with the two metal fittings 13 is formed.
Each of the second engaging claws 32 is connected to a guide metal fitting 33 whose center portion is fixed to the right inner wall surface 2e of the machine frame 2 by a second lock pin 32r so that the second engaging claw 32 can be turned up and down. Yes. Furthermore, the base end part of each 2nd engaging claw 32 is connected with the above-mentioned 2nd movable lock plate 34 in the state which can be rotated up and down similarly by a connection pin (illustration omitted).

As shown in FIG. 2A, the upper end portion of the second movable lock plate 34 protrudes upward from the position of the upper second engaging claw 32, and the front side of the protruding end of the second movable lock plate 34. An upper push-up piece 34u for pushing up the first engaging claw 21 for locking the glass frame 5 is formed. Further, as shown in FIG. 2B, a receiving plate 34p is bent at a right angle at the rear end side at the center of the second movable lock plate 34. An arc-shaped long hole 34n through which the unlocking pin 52 of the cylinder lock 50 is passed is formed below the center of the receiving plate 34p. For this reason, when the cylinder lock 50 is operated in the clockwise direction and the unlocking pin 52 moves upward, the unlocking pin 52 is hooked on the upper end of the arc-shaped elongated hole 34n and the second movable locking plate 34 is It will slide up.
A lower push-up piece 34d for pushing up the first engaging claw 21 for locking the glass frame 5 is formed at the front end side at the center lower portion of the second movable lock plate 34. Further, a spring receiver 34f is formed in the vicinity of the lower end portion of the second movable lock plate 34, and the upper end of the fourth spring 39 biased in the direction of pulling down the second movable lock plate 34 to the spring receiver 34f. It is hung. The lower end of the fourth spring 39 is hung on a fourth spring receiver 33 b provided on the lower guide fitting 33. For this reason, the upper and lower second engaging claws 32 are rotated upward around the second lock pin 32r by the second movable lock plate 34 being moved downward by the spring force of the fourth spring 39 (in the drawing). When the second movable lock plate 34 reaches the lower limit position, the second movable lock plate 34 is held at a position (locking position) that can be engaged with the second metal fitting 13 of the front frame 3.

Next, the operation of the locking device 10 of the pachinko machine 1 according to the present embodiment will be described.
First, the table frame 3 is locked automatically by closing the table frame 3. That is, when the front frame 3 is closed, the upper and lower second metal fittings 13 of the front frame 3 come into contact with the inclined surfaces 32k of the upper and lower second engaging claws 32 provided on the machine frame 2 side, and their inclinations Press the surface 32k. As a result, the upper and lower second engaging claws 32 are rotated downward by receiving a pressing force from the second receiving bracket 13, and the second movable lock plate 34 is rotated with the rotation of the upper and lower second engaging claws 32. Moves upward against the force of the fourth spring 39. Then, the second movable lock plate 34 is moved downward by the force of the fourth spring 39 in a state where the second catch 13 of the front frame 3 has reached the notch 32c from the inclined surface 32k of the second engagement claw 32. The second engaging claw 32 rotates upward, and the notch 32c is hung on the second metal fitting 13. As a result, the table frame 3 is locked.

  Similarly, the locking of the glass frame 5 is automatically performed by closing the front frame 30. That is, when the glass frame 5 is closed, the upper and lower first metal fittings 15 of the glass frame 5 come into contact with the inclined surfaces 21k of the upper and lower first engaging claws 21 provided on the machine frame 2 side, and the inclinations thereof. The surface 21k is pressed. As a result, the upper and lower first engaging claws 21 receive a push-up force from the first receiving bracket 15 and rotate upward against the forces of the first spring 25 and the second spring 26. Then, in a state where the first support member 15 of the glass frame 5 has reached the notch 21 c from the inclined surface 21 k of the first engagement claw 21, the first engagement claw 21 has the force of the first spring 25 or the second spring 26. And the notch 21c is hung on the first metal fitting 15. Thereby, the glass frame 5 is locked.

  The glass frame 5 is unlocked by key operation of the cylinder lock 50. That is, when the cylinder lock 50 is operated in the counterclockwise direction, the unlocking pin 52 moves downward in an arc shape, and the unlocking pin 52 is hooked on the lower end of the arc-shaped long hole 23n. The movable lock plate 23 slides downward against the force of the third spring 27. As a result, the upper and lower vertical short plates 22 are pulled by the first movable lock plate 23 and slide downward against the spring force of the first spring 25 and the second spring 26, and the upper and lower first engaging claws 21. Pivots upward (left pivot in the figure). Thereby, the notch 21c of the first engaging claw 21 is detached from the first receiving metal fitting 15, and the glass frame 5 is unlocked.

Further, when the front frame 3 is unlocked while the glass frame 5 is locked, the cylinder lock 50 is operated by key operation in the clockwise direction. That is, when the cylinder lock 50 is operated in the clockwise direction, the unlocking pin 52 moves upward in an arc shape, and the unlocking pin 52 moves to the upper end of the arc-shaped long hole 34n of the second movable lock plate 34. As a result, the second movable lock plate 34 slides upward against the force of the fourth spring 39. As a result, the upper and lower second engaging claws 32 are pivoted downward (right pivot in the figure), and the notches 32c of the second engaging claws 32 are disengaged from the second receiving metal 13, and the front frame 3 Unlocking is performed.
Further, when the second movable lock plate 34 slides upward, the upper push-up piece 34u and the lower push-up piece 34d of the second movable lock plate 34 push up the upper and lower first engaging claws 21, respectively. As a result, the notch 21c of the first engaging claw 21 is detached from the first metal fitting 15, and the glass frame 5 is unlocked.
That is, when the front frame 3 is unlocked, the glass frame 5 is also unlocked simultaneously, so that the front frame 3 can be opened smoothly.

Here, between the table frame 3 and the glass frame 5, as shown in FIG. 4, the glass frame 5 is closed with a force weaker than human power so that the glass frame 5 can be pulled out from the table frame 3. Is provided with a holding mechanism 60 that can hold it. The holding mechanism 60 includes a fixing piece 62 that is a rhombus-shaped protrusion attached to the back surface of the glass frame 5, and a holding portion 64 that is attached to the surface of the front frame 3 and holds the fixing piece 62 from both left and right sides. It is composed of The holding part 64 includes a pair of left and right rollers 64r and an elastic body (not shown) biased in a direction in which the outer peripheral surfaces of both the rollers 64r are pressed against each other.
When the glass frame 5 is closed with respect to the table frame 3, the fixing piece 62 of the glass frame 5 is pushed between the rollers 64r of the holding portion 64 of the table frame 3, and the glass frame 5 is closed by the elastic force of the elastic body. Retained. For this reason, even if the glass frame 5 is unlocked simultaneously with the unlocking of the table frame 3, there is no problem that the glass frame 5 opens from the table frame 3 unexpectedly.
When the glass frame 5 is opened from the front frame 3, the fixing piece 62 is pulled out from between the two rollers 64 r of the holding portion 64 by opening the glass frame 5 with a force greater than the elastic force of the elastic body.
In addition, although the example of the holding mechanism 60 using an elastic force was shown, it is also possible to use a magnet or the like instead of the elastic body.

Thus, according to the locking device 10 of the pachinko machine 1 according to the present embodiment, the first engagement claw 21, the first movable lock plate 23, and the second engagement that are generally mounted on the front frame 3 or the like conventionally. The claw 32 and the second movable lock plate 34 are mounted on the machine frame 2 side. For this reason, the space for attaching movable parts such as the movable lock plates 23 and 34 of the locking device 10 and the engaging claws 21 and 32 on the front frame 3 side is not required, and the game board or the like of the front frame 3 is attached accordingly. Space can be widened. Therefore, a large game board can be attached to the front frame 3.
In the present embodiment, an example in which the cylinder lock 50 is attached to the glass frame 5 is shown, but it is also possible to attach the cylinder lock 50 to the machine frame 2. It is also possible to change the mounting height of the cylinder lock 50 and change the positions of the arc-shaped long holes 23n, 34n of the first movable lock plate 23 and the second movable lock plate 34 in accordance with the height.

It is a front perspective whole view (exploded view) of the frame of a pachinko machine provided with the locking device concerning Embodiment 1 of the present invention. It is a whole perspective view (A figure) of the movable part of the locking device concerning this embodiment, and B section expansion exploded view (B figure) of A figure. It is a partial expansion perspective view (A figure, B figure) of the movable part of a locking device. It is a schematic perspective view of a holding mechanism. It is a disassembled perspective view of a cylinder lock. It is a disassembled perspective view showing the conventional locking device.

Explanation of symbols

2 Machine frame 3 Table frame 5 Glass frame 21 First engagement claw (engagement claw for glass frame locking )
23 1st movable lock board 32 2nd engagement nail ( engagement nail for table frame locking )
34 Second movable lock plate 34u Upper push-up piece 34d Lower push-up piece 50 Cylinder lock (lock body)
60 Holding mechanism

Claims (3)

A table frame attached to the machine base frame of the pachinko machine in a single-opening manner and a glass frame attached to the front frame in a single-opening manner. The lock body is rotated in one direction to remove the glass frame. A locking device for a pachinko machine that locks and unlocks the front frame by rotating the lock body in the opposite direction,
A glass frame lock that is mounted on the machine base frame, slides against an elastic force from a locked position to an unlocked position by receiving a turning force in one direction of the lock body, and is hung on a receiving bracket of the glass frame A first movable lock plate for moving the engagement claw in the unlocking direction;
A table frame that is also mounted on the machine frame, slides against the elastic force from the locked position to the unlocked position by receiving the reverse turning force of the lock body, and is hung on the bracket of the table frame A second movable locking plate for moving the locking engagement claw and the glass frame locking engagement claw in the unlocking direction;
A locking device for a pachinko machine characterized by comprising: A locking device for a pachinko machine according to claim 1,
Glass frame locking engagement claw is engaged with the first movable lock plate or the second movable lock plate when the first movable lock plate or the second movable lock plate slides until unlocked position from the locked position, a configuration in which the engagement is released when said first movable lock plate or the second movable lock plate is returned from the unlocked position to the locked position,
In a state where the engagement with the first movable lock plate and the second movable lock plate is released, it said glass frame for locking engagement claw is configured to be returned to the locked position from the unlocked position by the elastic force A locking device for a pachinko machine. A locking device for a pachinko machine according to claim 1 or claim 2,
Between the front frame and the glass frame, a holding mechanism capable of holding the glass frame in a closed state with a force weaker than human power is provided so that the glass frame can be pulled out from the front frame. A pachinko machine locking device.

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