JP5855733B2 - Bullet ball machine - Google Patents

Description

  The present invention relates to a ball game machine such as a pachinko machine or an arrangement ball machine.

  A ball game machine such as a pachinko machine has a game board having a game area in which various game parts such as winning means, passing gates, symbol display means and the like are arranged on the front side, and a launching means for launching a game ball. It is provided, and a game ball is driven into the game area by the launching means to play a game. The game board includes a base plate such as a veneer board and a guide rail arranged in an annular shape on the front side of the base board, and the inside of the guide rail is a game area. For example, it is fixed in a state of being fitted into a mounting hole formed in the base plate.

  Some guide rails are made of decorative metal parts fixed on the base plate outside the game area, and are integrally formed on other resin parts. For example, guide rails are made of bent metal strips. In many cases, a plurality of them are connected in the circumferential direction to form a set of guide rails.

  Further, for example, a guide rail made of a metal plate is directly fixed to the base plate by a nail-like rail fixing pin or other rail fixing tool at a plurality of fixing positions arranged at intervals in the longitudinal direction ( Patent Document 1).

JP 2001-346950 A

  For example, a guide rail made of a metal plate is fixed to the base plate by a rail fixing pin or the like at a fixed position spaced apart in the longitudinal direction as described above. If the game ball continues to collide for a long time, the rail fixing pin or the connecting portion between the rail fixing pin and the guide rail may be damaged due to fatigue.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce fatigue generated at a fixed position of a guide rail due to a collision of game balls.

The present invention includes a game board 5 having a game area 5a on the front side where various game parts are arranged, and a launching means 6 for launching a game ball toward the game area 5a. A guide rail 22 is arranged so as to surround the gaming area 5a, and an out port 31 is arranged at the most downstream part in the gaming area 5a. The guide rail 22 is fixed at predetermined fixing positions 27, 27a, 27b. In the ball game machine fixed to the game board 5 by the rail fixing tool 28, the fixed positions 27, 27a, 27b include a specific fixed position 27a shifted in the left-right direction with respect to the out port 31, and the game In the region 5a and above the specific fixed position 27a, the game ball can be switched from a closed state in which the ball cannot enter to an open state in which the ball can enter, and in the closed state, the game ball can pass through the front side. A winning unit 52, the actuated winning unit 52 and the left and right direction angled to divert to the out-port 31 side receives the placed game ball that has and falling between the specific stationary position 27a of the lower And a unit part 36 that is mounted on the game board 5 and has the actuated winning means 52 and the guide means 57, and the unit part 36 extends along the front surface of the game board 5. The actuating winning means 52 includes an opening / closing means 54 capable of opening and closing a winning opening 55 formed in the front mounting plate 51, and the guiding means 57 is connected to the front mounting plate 51. Is provided .

  According to the present invention, the game ball that has fallen at high speed toward the fixed position 27b collides with the winning means 53b before the guide rail 22 and loses the speed, and then the guide rail 22 moves away from the fixed position 27b. Therefore, it is possible to reduce fatigue generated at the fixed position 27b of the guide rail 22 due to the collision of the game ball.

1 is an overall front view of a pachinko machine showing an embodiment of the present invention. Similarly it is a front view of a game board. It is a principal part side surface sectional view of a game board. It is a principal part side surface sectional view of a game board. It is a principal part front view of a game board similarly. It is a principal part front sectional view of a game board similarly. It is principal part front sectional drawing of the game board which shows other invention. It is a principal part front view of the game board which shows other invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1-6 has illustrated one Embodiment which employ | adopted this invention for the pachinko machine. In FIG. 1, a gaming machine main body 1 is an inner frame that is pivotally attached to a rectangular outer frame 2 and a left and right side of the outer frame 2, for example, a left hinge 3 so as to be openable and detachable around a longitudinal axis. And a frame 4.

  2 is arranged on the upper side of the inner frame 4 and the launching means 6 etc. are arranged on the lower side. The front side of the inner frame 4 covers the front side of the game board 5. A glass door 7 and a lower opening / closing door 8 that covers the front side of the launching means 6 and the like below the glass door 7 are pivotally attached by a hinge 9 on the same side as the hinge 3 so as to be openable and detachable. The glass door 7 is provided with a glass window 10 corresponding to the game area 5a provided on the front side of the game board 5, and the lower opening / closing door 8 has a game ball paid out from a payout means (not shown). Is provided with an upper plate 11 for storing and supplying to the launching means 6, a lower plate 12 for storing surplus balls when the upper plate 11 is full, a firing handle 13 for operating the firing means 6 and the like. Yes.

  As shown in FIG. 2, the game board 5 includes a substantially rectangular base plate 21 made of, for example, a veneer plate, and a guide rail 22 is mounted on the front surface of the base plate 21. For example, the guide rail 22 sequentially passes through the vicinity of the center of each of the left side, the upper side, the right side, and the lower side of the base plate 21 from the outer end portion 23 disposed at a position to the left of the lower end of the base plate 21, and further to the outer end portion. 23 is arranged in a substantially annular shape parallel to the upper side through the inside of the base plate 21 and reaches the inner end 24 at the upper left portion of the base plate 21. The launch ball guide path 25 guides the game ball fired by the launch means 6 toward the game area 5a. In addition, in the vicinity of the exit part from the shot ball guide path 25 to the game area 5a, that is, in the vicinity of the inner end portion 24 of the guide rail 22, the game ball is allowed to pass from the shot ball guide path 25 side to the game area 5a side. A return ball prevention means 26 for preventing passage in the reverse direction is arranged.

  The guide rail 22 has a predetermined range on the outer end portion 23 side, for example, the outer rail portion 22a from the outer end portion 23 to the upper right part of the game area 5a, and a predetermined range on the inner end portion 24 side, for example, the game from the inner end portion 24. The inner rail portion 22b that reaches the lower right portion of the region 5a and the intermediate rail portion 22c that connects the inner and outer rail portions 22a and 22b are constituted by three portions.

  The outer rail portion 22a and the inner rail portion 22b are each formed of, for example, a strip-shaped metal plate bent into an arc shape, and are provided with rail fixing pins at a plurality of fixing positions 27 arranged at intervals in the longitudinal direction thereof. (Rail fixture) 28 is directly fixed to the base plate 21. That is, as shown in FIGS. 3 and 4, the pin insertion holes 29 for inserting the rail fixing pins 28 at the fixing positions 27 of the rail portions 22 a and 22 b, for example, near the edge on the base plate 21 side. The pin fixing hole 30 is formed on the base plate 21 corresponding to each fixing position 27. Moreover, the rail fixing pin 28 is formed by, for example, bending a metal wire having a substantially semicircular cross section with both ends sharpened into a hairpin shape. Then, by passing one side of the rail fixing pin 28 through the pin insertion hole 29, the rear side of the rail fixing pin 28 is hooked at each fixing position 27, and in this state, the rail fixing pin 28 is driven into the pin fixing hole 30. The rail portions 22 a and 22 b are fixed to the base plate 21 at a plurality of fixed positions 27.

  In the outer rail portion 22a and the inner rail portion 22b, fixed positions 27 are provided in the vicinity of both ends in the longitudinal direction and at a plurality of locations therebetween, but the fixed positions 27 are not necessarily provided at equal intervals. What is necessary is just to arrange | position appropriately according to the arrangement | positioning condition etc. of the game components in the area | region 5a. For example, on the inner rail portion 22b, an out port guide portion 32 is provided corresponding to the front side of the out port 31 provided at the lowermost part of the game area 5a. In the present embodiment, this out port guide portion is provided. Fixed positions 27 are arranged symmetrically on the left and right sides of 32. In addition, the out port guide part 32 is formed in an inclined shape so as to descend rearward so as to guide the game balls flowing from the left and right sides into the out port 31.

  The intermediate rail portion 22c is integrally provided on a decorative member 33 made of, for example, synthetic resin fixed to the base plate 21 around the game area 5a. In the present embodiment, a plurality of decoration members 33 are mounted along the outer periphery of the game area 5a, and the game area in a portion corresponding to the space between the outer rail portion 22a and the inner rail portion 22b among the decoration members 33. The wall surface facing 5a constitutes the intermediate rail portion 22c as it is. For example, on the intermediate rail portion 22c, a ball contact portion 34 to which a return rubber is attached is formed, for example, at a position corresponding to the upper right portion of the game area 5a.

  In the game area 5a, a central unit 35 and a lower unit 36 are arranged one above the other and are detachably mounted in mounting holes 37 (FIGS. 3 and 4) formed in the base plate 21, respectively. A number of game nails (not shown) are provided at portions other than the arrangement positions of the central unit 35 and the lower unit 36.

  The central unit 35 is disposed corresponding to the image display means 38 provided substantially at the center in the game area 5a, is provided along the front side of the base plate 21, and is fixed to the base plate 21 with a fixing screw or the like. The front mounting plate 39 and the display frame portion 40 surrounding the display screen 38a of the image display means 38 are integrally provided. The display frame portion 40, for example, protrudes substantially from the front mounting plate 39 to the front side, and prevents the game ball from entering the inside, that is, the image display means 38 side. That is, the game ball that has been driven into the upper side of the game area 5 a by the launching means 6 flows down the right or left side of the image display means 38 along the outer periphery of the display frame portion 40.

  On the display frame 40, for example, a symbol display means such as a normal symbol display means 41, a first special symbol display means 42a, a second special symbol display means 42b, etc. A stage 46 is provided that allows a game ball that has entered from the entrance 44 provided on the left side of the frame 40 to freely roll in the left-right direction and fall from the center entrance 45 or from both sides thereof. Yes.

  Furthermore, on the right side of the central unit 35, for example, a normal symbol starting means 47 and a second special symbol starting means 48b are arranged vertically on the front side of the front mounting plate 39. The normal symbol starting means 47 is for starting the symbol variation by the normal symbol displaying means 41, and is constituted by a passing gate capable of detecting a game ball. The normal symbol starting means 47 detects the game ball. Based on the above, the normal symbol display means 41 changes for a predetermined time.

  The second special symbol starting means 48b is for starting the symbol variation by the second special symbol display means 42b, and the actuated winning which can be switched from the closed state where the game ball cannot be won to the open state where the prize can be won. When the stop symbol after the change of the normal symbol display means 41 becomes a hit state and a normal profit state occurs, the normal symbol display unit 41 changes to an open state according to any of a plurality of types of opening / closing patterns. The second special symbol display means 42b fluctuates for a predetermined time based on the winning of the game ball when the special symbol starting means 48b is open.

  In the present embodiment, as the opening / closing pattern of the second special symbol starting means 48b, a normal opening / closing pattern (for example, 0.2 seconds × opening once) and an opening time and / or opening frequency are larger than the normal opening / closing pattern. Two types of open / close patterns (for example, 2 seconds × 3 times open) are set, and the extended open / close pattern is set during a special game state, which will be described later, and during other normal game states. It is assumed that the normal opening / closing pattern is selected.

  The lower unit 36 is arranged along the inner side of the guide rail 22 on the lower side of the game area 5a. The lower unit 36 is attached to and detached from the base plate 21 with a fixing screw or the like in a front mounting plate 51 provided along the front side of the base plate 21. It is fixed freely. The lower unit 36 may be further divided into a plurality of units.

  On the lower unit 36, for example, the first special symbol starting means 48a corresponding to the center in the left-right direction of the game area 5a, and the big winning means 52 on the right side of the first special symbol starting means 48a, for example, are the first special symbols. The normal winning means 53 are arranged at a plurality of locations including the left side of the starting means 48a.

  The first special symbol starting means 48a is for initiating symbol variation by the first special symbol display means 42a, and is constituted by non-actuated winning means that does not open and close. Based on the winning of the ball, the first special symbol display means 42a is changed for a predetermined time. The first special symbol starting means 48a is opened upward at the lower side of the drop opening 45, and a game ball dropped from the drop opening 45 through the stage 46 has a high probability to the first special symbol start means 48a. It is designed to win a prize.

  The big winning means 52 is an actuating winning means having an opening / closing plate 54 that can be switched from a closed state where a game ball cannot be won to an open state where a prize can be won, and the first and second special symbol display means 42a, 42b. The open / close plate 54 is opened according to any one of a plurality of types of opening patterns when a special profit state is generated based on the fact that the stop symbol after the change becomes a big hit mode.

  As shown in FIGS. 2 and 3, the big winning means 52 is a winning opening provided in the front mounting plate 51 in an opening shape by, for example, a rectangular opening / closing plate 54 swinging around a lower horizontal axis 54 a. The open / close plate 54 opens to the front side and guides the game ball that has fallen to the upper side when it is in the open state, and the open / close plate 54 is open to the winning port 55 when it is in the closed state. Is closed to prevent game balls from winning. In the closed state, the opening / closing plate 54 is substantially flush with the front mounting plate 51, for example, so that a game ball can pass through the front side.

  Further, for example, the rightmost fixed position 27a among the plurality of fixed positions 27 on the inner rail portion 22b is arranged below the special winning means 52, and above the fixed position 27a, for example, directly above. In addition, a protective member 56 is provided below the big winning means 52. The protective member 56 prevents the game ball from colliding with the fixed position 27a. For example, the central side of the game area 5a is formed in a low left-slope and is formed integrally with the front side of the front mounting plate 51. A protection guide plate (protection guide portion) 57 and one or a plurality of reinforcing ribs 58 integrally formed across the lower surface side of the protection guide plate 57 and the front mounting plate 51, for example, a fixed position The protection guide plate 57 is arranged so that the center in the left-right direction corresponds to the position just above 27a. A gap is provided between the guide rail 22 and the protection member 56 so that a game ball can pass along the guide rail 22.

  The normal winning means 53 is constituted by non-actuating winning means that does not open and close. For example, three are provided on the left side of the first special symbol starting means 48 a and four on the right side of the big winning means 52. Yes. As shown in FIGS. 2 and 4, each normal winning means 53 constitutes a winning opening 62 that protrudes in front of an inlet 61 provided in an opening shape on the front mounting plate 51 and opens upward, for example, in front view. A substantially U-shaped ball receiving portion 63, a front decorative plate 64 that closes the front side of the ball receiving portion 63, and a game ball that is provided in the ball receiving portion 63 and wins a winning opening 62 is provided at the rear entrance 61. And a ball guide portion 65 that guides to the side. For example, on both the left and right sides of the ball receiving portion 63, screwing base portions 63a for screwing and fixing the ball receiving portion 63 to the front mounting plate 51 are integrally projected.

  Of the four normal winning means 53, the three normal winning means 53a to 53c arranged on the left side of the first special symbol starting means 48a secure at least one game ball at a distance from the inner rail portion 22b. And in the state which ensured the space | interval of one game ball or more mutually, it has arranged in the substantially diagonal line form along the inner rail part 22b.

  Of these three normal winning means 53a to 53c, for example, a fixed position 27b among a plurality of fixed positions 27 on the inner rail portion 22b is arranged below the central normal winning means 53b. That is, the normal winning means 53b is arranged above the fixed position 27b, for example, directly above. In the present embodiment, the fixed position 27b does not coincide with the center of the normal winning means 53b in the left-right direction, and the portion of the normal winning means 53b that can be contacted by the game balls, that is, directly above the fixed position 27b, that is, It arrange | positions so that the left end side of the ball | bowl receiving part 63 containing the screwing base 63a may correspond.

  Further, the normal winning means 53b and the upstream side, that is, the upper left normal winning means 53a, have a space in the left-right direction that is less than one game ball, and the game balls pass between the normal winning means 53a and 53b. It cannot pass straight down or at an angle close to it. In addition, the normal winning means 53b and the downstream side, that is, the lower right normal winning means 53c, have a space in the left-right direction that is equal to or greater than that of one game ball, but above the normal winning means 53b, 53c. Is provided with a ball guide plate 66 for guiding the game ball to the center side of the game area 5a, that is, the out port 31 side.

  Further, in the present embodiment, as the opening pattern of the big winning means 52, a first opening pattern that makes it difficult to win a game ball (for example, 0.2 second opening × 2 rounds) and a second opening pattern that makes it easy to win a game ball. (28 seconds open or up to 9 wins x 15 rounds) is provided, and the probability that the second open pattern advantageous to the player is selected is more than the big win mode in the first special symbol display means 42a. It is assumed that the second special symbol display means 42b is set to be higher in the case of the big hit mode.

  Furthermore, in the present embodiment, after the occurrence of the special profit state, the special game state is generated with a predetermined probability. During this special gaming state, for example, the probability that the stop symbol after the change of the first and second special symbol display means 42a, 42b will be a big hit mode is higher than the normal probability (eg 1/350) (eg 1/350). 35), and the stop symbol after the fluctuation of the normal symbol display means 41 is the hit state when the fluctuation time of the first and second special symbol display means 42a, 42b is shorter than the normal fluctuation time, respectively. The normal probability (for example, 1/10) to a high probability (for example, 1 / 1.3), the variation time of the normal symbol display means 41 is reduced from the normal variation time (for example, 27 seconds) to the shortened variation time (for example, 2.7). Second), the opening / closing pattern of the second special symbol starting means 48b is switched from the normal opening / closing pattern (for example, 0.2 seconds × 1 open) to the extended opening / closing pattern (for example, 2 seconds × 3 open). It has become.

  As described above, in the pachinko machine according to the present embodiment, the average of the player who wins the jackpot due to the symbol variation of the second special symbol display means 42b is greater than the jackpot appearance due to the symbol variation of the first special symbol display means 42a. However, under normal gaming conditions, there is a low probability that the normal symbol display means 41 will be in a hit state, and the second special symbol starting means 48b has little opening time even if the hit state is reached. Therefore, the possibility of winning the second special symbol starting means 48b is extremely low. Therefore, in the normal gaming state, it is more advantageous for the player to aim for winning the first special symbol starting means 48a by making a left strike rather than aiming for the normal symbol starting means 47.

  Then, when the special variation state of the first special symbol display means 42a becomes a big win mode and a special profit state occurs, the right winning means 52 may be switched to the right-handed state this time. After that, when the special profit state ends and the special gaming state is started, the probability that the normal symbol display means 41 is in a winning mode becomes much higher than that in the normal gaming state, and when the winning mode is further increased Since the opening time of the second special symbol starting means 48b is also significantly longer than in the normal gaming state, during the special gaming state, the right-hand strike is made following the special profit state, and the normal symbol starting means 47 and the second It is advantageous for the player to aim at the 2 special symbol starting means 48b. As described above, it is advantageous for the player that the pachinko machine of the present embodiment is left-handed during the normal gaming state and right-handed during the special profit state and the special gaming state.

  In this way, the player makes a right turn in the special profit state and the special game state, but when not in the special profit state, the big winning means 52 is in the closed state, so that the right-handed game ball Most of them pass through the front side of the large winning means 52 downward at high speed. However, in the pachinko machine of the present embodiment, among the game balls that have passed downward through the front side of the big winning means 52, the game balls heading toward or near the fixed position 27a are first of the protective member 56 before the guide rail 22. After colliding with the protection guide plate 57 and losing speed, it is guided to the left and collides with the guide rail 22 at a position deviating from the fixed position 27a.

  Therefore, although the fixed position 27a is arranged below the big winning means 52 where the game balls are most concentrated when the player hits the right hand, the game balls directly to the fixed positions 27a are arranged. Thus, the fatigue generated at the fixed position 27a can be reduced by avoiding a collision, and the rail fixing pin 28 or the connecting portion between the rail fixing pin 28 and the guide rail 22 at the fixed position 27a can be reduced even after long-term use. Damage can be effectively prevented.

  Further, during the normal gaming state, since the player makes a left strike, most of the game balls fall toward the vicinity of the fixed position 27b of the inner rail portion 22b. However, in the pachinko machine of the present embodiment, the normal winning means 53b is arranged above the fixed position 27b, so that the game ball falling toward or near the fixed position 27b is in front of the guide rail 22. First, after colliding with the normal winning means 53b and losing speed, it collides with the guide rail 22 at a position deviating from the fixed position 27b. Further, the normal winning means 53a is arranged upstream of the normal winning means 53b, and the distance between the normal winning means 53a and 53b in the left-right direction is less than one game ball. Since it is not possible to pass between the means 53a and 53b straight downward or at an angle close thereto, the game ball that has passed between the normal winning means 53a and 53b at a high speed does not directly collide with the fixed position 27b.

  Therefore, it is possible to avoid a direct collision of the game ball to the fixed position 27b even though the fixed position 27b is arranged at a position where the game balls are most concentrated when the player makes a left strike. Can reduce the fatigue generated at the fixing position 27b, and can effectively prevent the rail fixing pin 28 at the fixing position 27b or the connecting portion between the rail fixing pin 28 and the guide rail 22 from being damaged even after long-term use. it can.

  As described above, in the pachinko machine of the present embodiment, the normal winning means 53b, which is a non-actuated winning means that does not open and close, is disposed in the game area 5a and above the fixed position 27b. The game ball that has fallen at a high speed toward the normal ball collides with the normal winning means 53b before the guide rail 22, loses its speed, and then collides with the guide rail 22 at a position deviating from the fixed position 27b. Thereby, the fatigue which arises in the fixed position 27b of the guide rail 22 by collision of a game ball can be reduced, and the damage in the fixed position 27b by long-term use can be prevented.

  Further, another normal winning means 53a is arranged in the vertical direction in the vicinity of the upstream side of the game ball flow direction of the normal winning means 53b arranged above the fixed position 27b, that is, in the vicinity of the upper left, and the two normal winning means are arranged. Since the distance between the means 53a and 53b in the left-right direction is less than one game ball, the game ball that has dropped obliquely from the upper left toward the fixed position 27b is also one of the two normal winning means 53a and 53b. It collides and does not collide with the fixed position 27b at high speed.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to these embodiment, A various change is possible in the range which does not deviate from the meaning of this invention. For example, the winning means arranged above the fixed position 27b can be opened and closed, such as a so-called electric tulip, in addition to the non-actuated winning means that does not open and close, and even within the closed state, a predetermined range within the game area 5a It may be an actuated winning means that occupies inability to pass.

  Various types of pins, nails, screws, and the like can be used for the rail fixture that fixes the guide rail 22 at the fixing position 27. Moreover, the guide rail 22 fixed with the rail fixing tool may be made of synthetic resin, for example.

  Further, the present invention has a configuration in which the winning means is arranged above the fixed position 27. However, even if the specific winning means does not correspond directly above the fixed position 27, as shown in FIG. The two winning means 53a and 53b are arranged so as to be shifted up and down, and the distance between the two winning means 53a and 53b in the left-right direction is less than one game ball, and the two winning means 53a and 53b are directly above the fixed position 27b. Even if it is configured such that the gaps correspond to each other, the same effect as the present invention can be obtained.

  Similarly, as shown in FIG. 8, for example, two protective members 56 similar to those in the embodiment are shifted up and down and the distance between the two protective members 56 and 56 in the left-right direction is set to be less than one game ball and fixed. You may comprise so that the clearance gap between these two protection members 56 and 56 may correspond just above the position 27a. Although not shown, the winning means 53 and the protective member 56 are arranged so as to be shifted up and down, and the distance between the winning means 53 and the protective member 56 in the left-right direction is less than one game ball, and the fixed position 27a is You may comprise so that the clearance gap between these winning means 53 and the protection member 56 may respond | correspond.

  Moreover, although the example which applied this invention to the pachinko machine was shown in embodiment, it cannot be overemphasized that it can implement similarly in other ball game machines, such as an arrangement ball machine.

DESCRIPTION OF SYMBOLS 5 Game board 5a Game area | region 6 Launching means 21 Base board 22 Guide rail 27 Fixed position 27a Fixed position 27b Fixed position 28 Rail fixing pin (rail fixing tool)
53a Ordinary winning means (winning means)
53b Normal winning means (winning means)

Claims (1)

A game board with a game area on the front side where various game parts are arranged;
A launching means for launching a game ball toward the game area,
A guide rail is arranged on the front side of the game board so as to surround the game area,
An outlet is arranged at the most downstream part in the game area,
In the bullet ball game machine, the guide rail is fixed to the game board by a rail fixture at a predetermined fixing position.
The fixed position includes a specific fixed position shifted in the left-right direction with respect to the out port,
In the game area and above the specific fixed position, the game ball can be switched from a closed state in which the ball cannot enter to an open state in which the ball can enter, and the game ball can pass through the front side in the closed state. and expressions winning means,
A guiding means arranged between the actuating winning means and the specific fixed position below the guiding means and receiving a game ball that has dropped and guiding it to the out-out side ;
A unit part mounted on the game board and having the actuating winning means and the guiding means;
The unit component includes a front mounting plate provided along the front surface of the game board,
The actuating winning means includes an opening / closing means capable of opening and closing a winning opening formed in the front mounting plate.
A bullet ball game machine, wherein the guide means is provided on the front mounting plate .

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