JP5465960B2 - Game ball shock absorber - Google Patents

Description

  The present invention relates to a shock absorber for a game ball falling from an upper tank or the like on a game island.

As shown in FIG. 9, game balls (also called pachinko balls) that are excluded from each gaming machine (also referred to as a pachinko machine) 2... Constituting one gaming island (hereinafter simply referred to as an island) 1. The balls are collected in the lower tank 3 and discharged from the lower tank 3 through the shutter 4 that is controlled to be opened, and are lifted and polished by the lifting and polishing machine 5 and then the upper tank. 6 is stored. The upper tank 6 is replenished to the gaming machine or the ball lending machine via the replenishment rod 7 and the replenishment pipe 7 'in response to a request from each gaming machine 2 ... or the ball lending machine 2a ... The ball that overflows from the overflow outlet 8 when the storage amount exceeds the upper limit value falls to the shock absorber 10 through the return pipe 9, and after the shock of the fall is reduced (buffered) by the shock absorber, the ball passes through the distributor 140. It is configured to be collected in the lower tank 3.

  As shown in FIG. 9, the gaming machines 2 and ball lending machines 2a on one island are divided into two groups on the left and right with the upper tank 6 as a boundary. When supplying balls to the machine, the overflow outlets 8 are provided on the left and right sides of the upper tank 6, and the lower ends of the two return pipes 9 whose upper ends are connected to the overflow outlets 8 are connected to the shock absorber 10. . In some cases, an island game machine and ball lending machine may be installed only on the left or right side of the upper tank. In this case, only the return pipe connected to the overflow outlet 8 on one side is used as a shock absorber. Connected. In addition, when the so-called “crossover system” is adopted, which can request the next island to be replenished when the total number of balls on the island falls below a predetermined number, The lower end of a crossover pipe 12 connected to the end of a crossover (not shown) for replenishing balls from the upper tank (not shown) to the upper tank 6 of the island is connected to the shock absorber 10. Is not adopted, the crossover tube 12 is not connected to the shock absorber 10.

  The performance required for the shock absorber 10 is that (i) it can absorb or mitigate the impact when receiving a ball (steel ball) falling at a certain height from the upper tank 6 to the height close to the lower tank 3, (ii) Can prevent damage to the shock absorber wall due to collision and repulsion (ramps) between balls when the ball falls on the shock absorber, and (iii) impact sound due to collision with the shock absorber inner wall during ball fall (Noise) can be prevented.

  In order to meet the above demand, the conventional shock absorber 10 uses a main body 110 and three connection pipes 120a, 120b, 120c (the general reference numeral 120 is used when a specific connection pipe is not indicated) as shown in FIG. ) And three buffer members 130a, 130b, and 130c (the general reference numeral 130 is used when not pointing to a specific connecting pipe), and the main body 110 is formed in a box shape opened to the upper surface by sheet metal. A ball discharge port 111 at the center of the bottom surface, and a rubber protective sheet (liner) 112 is fixed to the inner wall surface of the main body 110 by screwing in order to prevent damage caused by the impact of the ball dropping or the ball rampage, As shown in FIG. 9, it is installed at a position slightly higher than the lower tank 3 below the upper tank 6. Each of the connecting pipes 120 is formed in a cylindrical shape and is mounted so as to protrude upward from the upper surface opening of the main body 110, and a return pipe 9 that drops overflow balls from the upper tank 6 on the connecting pipes 120 a and 120 b on both sides. The lower end of the crossover pipe 12 from the adjacent island is inserted and connected to the central connecting pipe 120c. The buffer member 130 is formed in a U-shaped longitudinal section, and is connected to the lower end of each connecting pipe so that the intermediate position of the curved concave bottom is on the axis of each connecting pipe 120. Has been.

Each connecting pipe 120 and each buffer member 130 below the connecting pipe 120 are integrally formed of rubber (chloroprene rubber, nitrile rubber) as illustrated in FIG. And as shown in FIG. 10, the bottom part of the buffer member 130c in the center is provided at a position lower than the bottom parts of the buffer members 130a and 130b on both sides, and has a step. The U-shaped space 131 of the buffer members 130a and 130b on both sides is shielded by the side wall of the main body 110 on the surface opposite to the central buffer member 130c, and the surface on the central buffer member 130c side is opened to the space 113 in the main body. ing. Further, the U-shaped space 131 of the central buffer member 130c is open in both the left and right directions. Thereby, a meandering ball passage is formed between the lower end of each of the connection pipes 120 a, 120 b , 120 c in the main body 110 and the ball discharge port 111.

  With the above configuration, the overflow balls from the upper tank 6 are connected to the curved bottom surfaces of the buffer members 130a and 130b on both sides from the connection tubes 120a and 120b on both sides of the shock absorber 10 via the return pipe 9, as shown in FIG. Fall. Since the buffer member 130 is made of rubber, a primary buffer effect can be obtained when the buffer member 130 is dropped. Some of the balls that have fallen on the curved bottom surfaces of the buffer members 130a and 130b on both sides hit the protective sheet 112 on the inner wall of the main body 110 due to repulsion between the balls (secondary buffer), and the other part repels each other. Therefore, it moves from the curved bottom surface to the center side and falls to the curved bottom surface of the lower central buffer member 130c (secondary or tertiary buffer). The ball replenished from the adjacent island via the crossover pipe 12 falls from the central connection pipe 120c of the shock absorber 10 to the curved bottom surface of the central shock absorber 130c, and a primary buffer effect is obtained. The balls collected on the curved bottom surface of the center are decelerated as the balls press against each other, fall from the left or right end of the curved bottom surface of the center to the protective sheet 112 covering the top surface of the bottom wall 114 of the main body 110, and further buffer -It is decelerated and discharged from the ball outlet 111 in the center of the bottom wall.

Below the ball outlet 111, a mountain-shaped branching device 140 is installed so that the water basin 140 ′ is located below the center of the ball outlet 111. Divided into right and left by the branching unit 140, the left and right lower tanks 3 of the game island are respectively collected.

nothing special.

The problems of the above prior art are as follows.
(1) The main body 110 is made of sheet metal, the protective sheet 112 is made of rubber, and the connection pipe 120 and the buffer member 130 are made of rubber, and are made of different materials. Moreover, the shape structure is complicated. Therefore, the manufacturing cost is high.
(2) Since the protective sheet 112 is thin, the cushioning performance is insufficient, noise is likely to occur, and wear and deterioration are likely to occur. Further, since the buffer member 130 is also thin, there is a problem in buffer performance and durability, noise is likely to be generated, and the buffer member 130 is easily damaged due to a continuous impact of a huge amount of spheres. Needed replacement.
(3) The protective sheet 112 and the buffer member 130 are worn and deteriorated by use, and repair and replacement are required at different times. Since the protective sheet 112 is screwed to the main body 110, replacement takes time. In addition, when the waste treatment is performed according to the life, it is necessary to separate each material, so that the waste treatment cost is required.

The present invention has been made in view of the above points, and the problem to be solved is for balls on an island that can reduce manufacturing costs , improve durability , suppress noise, and reduce disposal costs. It is to provide a shock absorber.

In order to achieve the above object, an island ball shock absorber according to the present invention is formed of (a) one kind of material having shock absorbing performance, and includes a connection portion, a housing portion, and a shock absorber portion. ) The connecting portion is formed in a cylindrical shape projecting upward at both sides and the center of the upper surface of the casing portion , and connects the return pipe or the lower end portion of the return pipe and the transition pipe, and (c) the casing portion Has a ball passage that communicates from the lower end of the connection portion to the ball discharge port formed in the center of the lower portion of the housing portion , and (d) the buffer portion is inside the housing portion and is the center of the connection portion wherein between the buffer of the central provided below the connecting portion, a lower sides of the connecting portion of the connecting portion and both sides of the cushioning portion provided below the middle of the buffer portion, the ball passage (E) The central buffer is formed in a thick block, and the buffer on both sides is the bottom of the housing. Is formed in a block-like continuous thick, characterized in that.

Moreover, the ball buffer in the island by this invention is (a) It shape | molds with one type of material which has impact absorption performance, and has a connection part, a housing | casing part, and a buffer part, (b) It is formed in a cylindrical shape protruding upward at both sides and the center of the upper surface of the housing part, and connects the lower end of the return pipe or the return pipe and the transition pipe. A ball passage communicating from the lower end to the ball outlets formed on the left and right sides of the lower portion of the housing portion; (d) the buffer portion is inside the housing portion and is connected to the connecting portions on both sides of the connecting portion; A buffer portion on both sides provided below, and a center buffer portion provided below the center connection portion and below the both sides of the connection portion, and the ball passage is formed by the buffer portion. Meandering. (E) The buffer portions on both sides are formed in a thick block shape, and the central buffer portion is formed in a thick block shape that continues to the bottom surface of the housing portion.

The shock absorber is divided into two parts, a front side part and a back side part, of the main body consisting of a housing part, a connection part, and a buffer part, each is integrally molded, and the split surfaces of the front side part and the back side part are abutted, it was desired that is integrally coupled to tie in binding metal.

According to the present invention, the shock absorber is integrally formed of one kind of material, and parts for fixing the members are not necessary. Therefore, the manufacturing cost can be reduced. Further, the casing and the buffer are formed of a material having a high impact absorbing performance. In the invention of claim 1, the central buffer is formed in a thick block shape, and the buffer on both sides is the casing. Since it is formed in a thick block shape that continues to the bottom surface of the part, the following exceptional buffering effect is obtained. (i) Since there is no rebound of the ball, it is possible to obtain the effects of preventing the wall surface destruction due to the ball rampage and suppressing the generation of noise. (ii) There is little wear and breakage of the buffer part due to the collision of the balls, and the durability is excellent. Furthermore, since it is molded from a single material, there is no need for separation at the time of disposal, so that an effect of reducing disposal costs can be obtained.
In the invention of claim 2, the buffer portions on both sides are formed in a thick block shape, and the central buffer portion is formed in a thick block shape that continues to the bottom surface of the housing portion. In addition to the effects similar to those of the first aspect of the invention, the ball outlets are provided on both the left and right sides. Even if the ball is present at any position between the outlets, the balls to be discharged are evenly distributed to the left and right, so that there is an advantage that strictness is not required for the installation position of the branching device.

  According to invention of Claim 3, shaping | molding and coupling | bonding of a front side part and a back side part, and division | segmentation discard can be performed easily.

It is the perspective view which looked at the shock absorber concerning the present invention from the back side. It is a front view of the shock absorber. It is the perspective view which looked at the front side part at the time of comprising a buffer into 2 divisions from the back side . It is the perspective view which looked at the back side part at the time of similarly comprising 2 parts of shock absorbers from the front side . It is a perspective view of the upper binding metal fitting for binding a front side part and a back side part. It is a perspective view of the lower binding metal fitting for binding a front side part and a back side part. It is sectional drawing which shows the movement of the ball | bowl in a buffer. It is sectional drawing which illustrates the example of arrangement | positioning from which a buffer part differs, and the movement of a ball | bowl. It is a figure which illustrates the movement route of the ball in one game island. It is sectional drawing which shows the structure of the conventional buffer and movement of a ball | bowl. It is a perspective view of a connecting pipe and a buffer member in FIG.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an upper tie fitting B on the upper and lower sides of a box-shaped main body A formed by abutting a front side portion A1 and a back side portion A2 integrally formed of a shock-absorbing material, for example, a rubber-based material (polyurethane or the like). A shock absorber 10N according to the present invention is shown in which both the parts A1 and A2 are bound by mounting the lower binding metal C.

  The front side portion A1 which is one component of the main body A has the shape and structure shown in FIG. 3, and the back side portion A2 which is another constituent element of the main body A has the shape and structure shown in FIG. Have.

First, that describes in detail the front portion A1. The front side portion A1 integrally includes a housing portion 211, a connection portion 221 (a general term for 221a, 221b, and 221c), and a buffer portion 231 (a general term for 231a, 231b, and 231c). The casing part 211 has a rectangular box-like appearance in which the front, side, lower part of the back and bottom are shielded, and also serves as an exterior. Three half-pipe-like connection portions 221a, 221b, and 221c that are open in the vertical direction and the back side are provided on the upper surface of the housing portion 211 so as to protrude upward from the housing portion 211, and the width of each connection portion. the back of the opposite end portions are located on a common vertical plane. A space formed by the curved concave surfaces of the connection portions 221a, 221b, and 221c communicates with an inner space ( a ball passage 251 described later ) of the housing portion 211.

Central connecting portion 221c of the buffer section 231c of the thick underneath the inner space of the housing portion 211 is formed, and also the right and left sides of the lower side of the loose衝部231c of that, the thick buffer unit 231a, 231b Is formed. One side of the buffer portions 231a and 231b on both sides is continuous with the inner surfaces of the side walls 211a and 211b of the casing 211, and the other side is continuous with a ball discharge port 241 formed below the central buffer portion 231c. Yes. A ball passageway 251 communicating in a meandering manner is formed by the buffer portions 231a, 231b, and 231c between the lower ends of the connection portions 221a, 221b, and 221c and the ball discharge port 241.

  The buffer portions 231a and 231b on both sides may be as thick as the central buffer portion 231c, but in the illustrated example, the buffer portions 231a and 231b are formed in a thick block shape that continues to the bottom surface of the housing portion 211. The bottom surface of the ball discharge port 241 has a guide portion 241c that is inclined downward in the rear direction and extends from the rear surface.

  On both side walls 211a and 211b of the housing portion 211, fitting grooves 261a and 261b are formed that open in the back direction and have an appropriate length in the vertical direction. As will be described later, the fitting grooves 261a and 261b fit the protrusions 262a and 262b projecting in the front direction to the both side walls 212a and 212b of the rear surface side portion A2 so as to perform accurate positioning. belongs to. The fitting grooves 261a and 261b may be divided into a plurality of upper and lower parts.

In addition, two upper and lower protrusions 271 and 281 are formed on the upper outer surface of the casing 211, and a groove 291 for fitting an upper binding bracket B described later is formed between the protrusions. Yes. A protrusion 2101 for preventing the lower binding metal fitting C , which will be described later, from dropping, is also formed on the outer peripheral surface of the lower end of the housing portion 211.

Next, we described in detail with reference to FIG rear portion A2. The back side portion A2 is also formed in the same shape as the front side portion A1, and includes a housing portion 212, a connecting portion 222 (generic name for 222a, 222b, and 222c), and a buffer portion 232 (generic name for 232a, 232b, and 232c). And integrally. That is, the casing 212 has a rectangular box-like appearance in which the back surface, the side surface, the front lower portion, and the bottom surface are shielded, and also serves as an exterior. Top to three half-pipe-shaped connecting portion 222a of the housing 212, 222b, 222c are provided so as to protrude upward, the back surface of both ends in the width direction of the connection portion is positioned on a common vertical plane Has been. The spaces 2222a, 2222b, and 2222c formed by the curved concave surfaces of the connection portions 222a, 222b, and 222c communicate with the inner space ( a ball passage 252 described later ) of the housing portion 212.

Central connecting portion 222c of the buffer section 232c of the thick underneath the inner space of the housing portion 212 is formed, and also both sides of the lower side of the loose衝部232c of that, the thick buffer unit 232a, 232b is Is formed. One side of the buffer portions 232a and 232b on both sides is continuous with the inner surfaces of the side walls 212a and 212b of the housing portion 212, and the other side is continuous with a ball discharge port 242 formed below the central buffer portion 232c. ing. A ball passage 252 communicating in a meandering manner is formed by the buffer portions 232a, 232b, and 232c between the lower end portions of the connection portions 222a, 222b, and 222c and the ball discharge port 242.

  The bottom surface of the ball discharge port 242 is inclined downward in the back direction, and has an extending portion 242c (see FIG. 1) extending from the back wall of the housing unit 212 in the back direction along the top surface of the ball discharge port 242. . The buffer portions 232a and 232b on both sides may be as thick as the central buffer portion 232c, but in the illustrated example, the buffer portions 232a and 232b are formed in a thick block shape that continues to the bottom surface of the housing portion 212.

  On both side walls 212a and 212b of the housing portion 212, ridges 262a and 262b are formed that protrude in the back direction and have an appropriate length in the vertical direction. As will be described later, the protrusions 262a and 262b are fitted into the fitting grooves 261a and 261b of the both side walls 211a and 211b of the front side portion A1 for accurate positioning. Accordingly, the distance between the protrusions 262a and 262b is equal to the distance between the fitting grooves 261a and 261b. When the fitting grooves 261a and 261b are divided into a plurality of parts, the same number of protrusions 262a and 262b having the same length are formed. Further, two upper and lower ridges 272 and 282 are formed on the upper outer surface of the housing portion 212, and a groove 292 for fitting an upper binding bracket B described later is formed between the ridges. Yes.

  The height from the upper surface to the bottom surface of the housing portion 212 of the rear side portion A2 is set to be substantially equal to the height from the upper surface of the housing portion 211 of the front side portion A1 to the lower ends of the fitting grooves 261a and 261b on both side walls. Has been. In addition, the height from the upper surface of the casing portion 211 of the front side portion A1 to the central buffer portion 231c and the buffer portions 231a and 231b on both sides is respectively determined from the upper surface of the casing portion 212 of the rear side portion A2 to the central buffer portion. It is equal to the height to the part 232c and the buffer parts 232a and 232b on both sides. And the lower surface of the guide part 241c of the ball discharge port 241 of the front side part A1 is set substantially equal to the upper surface of the bottom part of the ball discharge port 242 of the back side part A2.

To combine the front side portion A1 and the back side portion A2 shown in FIGS. 3 and 4 to make the main body A in FIG. 1, the back side of the front side portion A1 and the front side of the back side portion A2 are abutted, and the front side When the protrusions 262a and 262b on both sides of the back side portion A2 are fitted into the fitting grooves 261a and 261b on both sides of the portion A1, the half-pipe connection portions 221a, 221b and 221c of the front side portion A1 and the back side portion A2 The half-pipe-shaped connecting portions 222a, 222b, and 222c each have a single cylindrical appearance having slits 223a, 223b, and 223c (see FIG. 1) therebetween, and the housing of the front side portion A1. The portion 211 and the housing portion 212 of the back side portion A2 have a single box-like appearance with the outer peripheral surface sealed, and the guide portion 241c of the ball discharge port 241 of the front side portion A1 and the ball discharge of the back side portion A2 The extended portion 242c of the outlet 242 has a single cylindrical appearance protruding to the back side. Further, the fitting groove 291 at the upper part of the housing part 211 of the front side portion A1 and the fitting groove 292 at the upper part of the housing part 212 of the rear side part A2 continue in a rectangular ring shape. In the state where the front side portion A1 and the back side portion A2 are in contact with each other, the buffer portions 231c and 232c at the center of the front side portion A1 and the back side portion A2 are integrally continuous. The parts 231a and 231b; 232a and 232b are also continuously integrated.

As shown in FIG. 5, the upper binding bracket B in FIG. 1 is formed at both end portions of a holding portion 301 obtained by bending a strip-shaped sheet metal into a U-shape in which the length of the base is equal to the width of the housing portions 211 and 212. And a pair of metal fittings B1 and B2 provided with a fixing portion 302 by screws. A through hole 303 is formed in the fixing portion 302 of one metal fitting B1, and a screw hole 304 is formed in the fixing portion 302 of the other metal fitting B2 . Thus, the fittings 291 and 292 on the upper part of the main body A with which the metal fittings B1 and B2 are abutted are fitted, and the main body A is held by the pair of holding portions 301, and the metal fittings B1 and B2 are inserted from the through holes 303 of the fitting B1. By passing a screw (not shown) and screwing it into the screw hole 304 of the metal fitting B2, the upper portions of the front side portion A1 and the back side portion A2 are bound.

  As shown in FIG. 6, the lower binding bracket C of FIG. 1 includes a first bracket C1 mounted on the front side of the lower portion of the front side portion A1, a back surface of the lower portion of the front side portion A1, and a bottom surface of the rear side portion A2. It consists of the 2nd metal fitting C2 with which it attaches. The first metal fitting C1 basically has a shape similar to that of the other metal fitting B2 of the upper binding metal fitting B, and includes fixing portions 402 having screw holes 403 at both ends of the U-shaped holding portion 401. Yes. Further, the first metal fitting C1 has a fixing portion 404 for fixing the shock absorber 10N to a rigid frame (not shown).

The second metal fitting C2 integrally includes a covering portion 405 that covers the lower back surface of the front side portion A1, and a support portion 406 that is continuous along the upper side of the covering portion 405 and supports the bottom surface of the back side portion A2. A fixing portion 407 extended so that both end portions of the covering portion 405 can be overlapped with the fixing portion 402 of the first metal fitting C1 is provided, and a screw (through a through hole 408 formed in both fixing portions 407) ( By screwing (not shown) into the screw hole 403 of the fixing portion 402 of the first metal fitting C1, the first metal fitting C1 and the second metal fitting C2 are firmly connected to support the main body A of the shock absorber 10N.

  Of the connection portions 221a, 221b, and 221c of the shock absorber 10N, the two connection portions 221a and 221b have two upper ends connected to the left and right overflow outlets 8 of the upper tank 6 as described above. The lower end of each return pipe 9 is inserted and tightened by a known tightening band (not shown) attached to the outside of each connection part to connect the return pipe 9 and the connection part, and the center connection The lower end portion of the crossover tube 12 is inserted into the portion 221c as necessary, and similarly, the crossover tube 12 and the connection portion 221c are coupled by being tightened by a tightening band.

  In order to make it easy to position the lower end of the return pipe 9 and the transition pipe 12 at an appropriate height with respect to the connection when inserting the lower end of the return pipe 9 and the connecting pipe 12 into the cylindrical connection parts 221, 222. A plurality of through holes penetrating from the front side to the back side with the upper binding bracket B mounted on the main body A in the housing portions 211 and 212 of the front side portion A1 and the rear side portion A2 and the holding portion 301 of the upper binding bracket B. Holes 2111, 2112; 305 are provided. After inserting through these through holes penetrating in the front-rear direction, rod-like tools close to each other, for example, screwdrivers as stoppers, return pipes 9 or crossovers to the cylindrical connection portions 221 and 222 prepared in advance on the outer periphery. By inserting the lower end portion of the tube 12, the return tube 9 or the transition tube 12 can be fastened and fixed to the connecting portions 221 and 222 in a state where the tube 12 is stopped at a predetermined position (see FIG. 7).

  Here, both the return pipe 9 and the transition pipe 12 have conventionally been made of resin for preventing clogging of balls due to static electricity, preventing malfunction of ICs due to static electricity, preventing or mitigating shock due to electric shock, etc. An antistatic hose made of metal is used. However, since the connection pipe in the conventional shock absorber was made of sheet metal, when tightened with a tightening band, the tightening force was not evenly applied to the outer periphery of the antistatic hose, and an offset load was applied partially. Deformation was easy to occur. For this reason, a ball falling on the return pipe or the transition pipe may jam in the connection pipe.

  On the other hand, in the present invention, since the connecting portions 221 and 222 are formed of a rubber-based material and have elasticity, the tightening force by the tightening band is transmitted through the connecting portions 221 and 222 through the return pipe 9 and the transition pipe 12. Evenly applied to the outer periphery of the (antistatic hose) and no unbalanced load is generated. Therefore, since both the return pipe and the transition pipe maintain a perfect circular shape, a remarkable effect that the possibility of the jam of the ball is eliminated can be obtained.

Next, the movement and buffering action of the balls in the shock absorber 10N described above will be described with reference to FIG.
The balls falling from the left and right return pipes 9 to the shock absorber 10N land on the upper surfaces of the buffer portions 231a, 232a; 231b, 232b on both sides via the ball paths 251 and 252. Since the buffer portions 231a, 232a; 231b, 232b are excellent in shock absorption, the impact of the ball is sufficiently relaxed here, and is decelerated and discharged downward from the ball discharge port 241 (242). The ball falling from the crossover pipe 12 lands on the upper surface of the central buffer portions 231c and 232c. Similarly, the ball passage 251 that is sufficiently shock-reduced and decelerated and communicates in a meandering manner. Through (252), landing on the upper surfaces of the buffer portions 231a, 232a; 231b, 232b on both sides of the second stage. Here, it is further buffered and decelerated, and discharged downward from the ball outlet 241 (242). The balls discharged from the ball discharge port 241 (242) are distributed and collected to the left and right lower tanks 3 by the existing branching device 140 installed below.

In FIG. 7, the central buffer portions 231c, 232c are provided above the buffer portions 231a, 232a; 231b, 232b on both sides, but as shown in FIG. 8, the buffer portions 231a, 232a; 231b, 232b on both sides are provided. Can be provided on the upper side and the central buffer portions 231c and 232c can be provided on the lower side, and ball outlets 241a and 241b can be provided on the left and right sides of the central buffer portions 231c and 232c, respectively. In this case, the balls falling from the left and right return pipes 9 to the shock absorber 10N are primarily buffered and decelerated by the buffer portions 231a, 232a; 231b, 232b on both sides, and then the secondary buffer by the central buffer portions 231c, 232c. Balls that have been decelerated and separated to the left and right and fall from the crossover tube 12 land on the central buffer portions 231c and 232c, and are buffered and decelerated, and then divided into left and right, and left and right ball outlets 241a and 241b, respectively. Discharged from.

  In the example of FIG. 7, in order to evenly distribute the discharged balls to the left and right, it is necessary to install the branching device 140 so that the water basin 140 ′ is positioned below the center of the ball discharge port 241 (242). On the other hand, in the example of FIG. 8, the ball outlets 241a and 241b are separated from each other in the left and right directions. Since the balls to be discharged are equally distributed to the left and right, there is an advantage that the strictness is not required for the installation position of the branching device 140.

Claims (3)

It has a connection part, a case part, and a buffer part formed of one kind of material having shock absorbing performance,
The connection part is formed in a cylindrical shape protruding upward at both sides and the center of the upper surface of the housing part, and connects the lower end of the return pipe or the return pipe and the transition pipe,
The housing portion has a ball passage communicating from a lower end of the connection portion to a ball discharge port formed at a lower center of the housing portion ,
Wherein the buffer portion, said a housing portion inside the A and the center of the buffer portion provided below the center of the connection portion of the connection portion of a lower sides of the connecting portion of the connecting portion And buffer portions on both sides provided below the central buffer portion , the ball passage meanders by the buffer portion,
The central buffer portion is formed in a thick block shape, and the buffer portions on both sides are formed in a thick block shape that continues to the bottom surface of the housing portion,
A ball buffer on an island characterized by that. It is molded with one kind of material that has shock absorbing performance, and has a connection part, a housing part and a buffer part,
The connection part is formed in a cylindrical shape protruding upward at both sides and the center of the upper surface of the housing part, and connects the lower end of the return pipe or the return pipe and the transition pipe,
The housing portion has a ball passage communicating from a lower end of the connection portion to a ball discharge port formed at a lower center of the housing portion,
The buffer portion is provided inside the housing portion and below the connection portions on both sides of the connection portion, and below the center connection portion of the connection portions. Including a central buffer part provided below the buffer parts on both sides, the ball passage meanders by the buffer part,
The buffer portions on both sides are formed in a thick block shape, and the central buffer portion is formed in a thick block shape that continues to the bottom surface of the housing portion,
A ball buffer on an island characterized by that. 3. The ball shock absorber according to claim 1 or 2, wherein the shock absorber is divided into a front side portion and a back side portion of a main body including a casing portion, a connection portion, and a buffer portion, and each is integrally molded. The ball shock absorber is characterized in that the divided surfaces of the front side portion and the back side portion are butted together and bound together by a bundling bracket.

Images