JP2008220634A - Screw unit and screw structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screw structure which can be well used as a cigarette butt transporter forming a cigarette butt treatment unit. <P>SOLUTION: A screw unit 20 is composed by providing a plurality of plastic screw elements 21 having spiral blades 24 integrally molded on the periphery of a shaft portion 23 and a first shaft insertion hole 25 formed on its axis, and a first shaft 22 inserted into the first shaft insertion hole 25 axially closely aligning a plurality of the screw elements 21 and of a square cross-section. The first shaft 22 has a second shaft insertion hole 26 of a square cross-section, fitting both ends of a second shaft 31 of a square cross-section into the insertion holes 26 of the adjacent screw units 20 forms a screw structure interlocking a plurality of screw units 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a screw unit and a screw structure that can be used for a cigarette butt carrier constituting a cigarette butt treatment apparatus in a game hall.

For example, in many pachinko parlors, a large number of game machines such as pachinko machines and slot machines are arranged in an island-shaped installation section, a long and thin counter is provided at the lower front of the installation section, and a buttocks processing device is provided along the counter. . The cigarette butt processing apparatus includes an ashtray provided for each play equipment on the counter, and an elongated cigarette butt conveying portion communicating with each ashtray.
The cigarette butts pass from the bottom of the sash-like ashtray through the drop hole and fall to the cigarette transporting part, and are transported in the horizontal direction and collected by the cigarette butt collecting part. Such a cigarette butt treatment apparatus is described in Patent Document 1, for example.

  FIG. 5 is a partial cross-sectional view showing an example of a buttocks processing apparatus. The buttocks processing apparatus 1 is surrounded by an elongated plate-like template 2 provided along the lower side of the counter, an elongated casing 3 provided in parallel below the template 2, and the template 2 and the casing 3. A screw structure 4 arranged along an elongated space is provided. The template 2 is provided with a drop hole 6 that opens at the bottom of an ashtray provided for each game equipment 5.

  The screw structure 4 has a shaft body 7 and a spiral blade 8 provided continuously around the shaft body 7. One end of the shaft body 7 is connected to a drive motor 10 via a joint 9, and the other end. The portion is pivotally supported by the bearing portion 11. A butt collection part 12 is disposed below the bearing part 11. The butterfly collection part 12 is constituted by a box 13 whose upper side is opened, and handles 14 are provided on both side surfaces of the box 13. An opening 15 is formed at the bottom of the housing 3 extending above the box 13.

  A cigarette butt from an ashtray (not shown) falls into the housing 3 through the drop hole 6, and is conveyed to the left by the conveying action of the screw structure 4 rotating at a low speed by the drive motor 10, and is conveyed to the vicinity of the bearing portion 11. The butt falls from the opening 15 into the box 13 of the butt collection part 12. In the box 13, water is stored up to a predetermined level in order to extinguish the butt with the fire.

JP-A-8-10437

  The screw structure 4 is desirably manufactured by resin molding in order to reduce weight and cost. In order to manufacture the screw structure 4 by resin molding, for example, a spiral wing portion is divided and formed into a plurality of parts, a first shaft insertion hole is formed at the center of the shaft portion during molding, and a plurality of elongated metal round bars are formed. It is conceivable to prevent the rotation of the spiral blades by rotating them through the first shaft insertion holes sequentially and inserting a pin from each spiral blade part into a round bar or screwing them in.

  However, when such a connection method is adopted, circumferential stress generated when the screw structure rotates concentrates on the pin part, causing cracks in the resin around the pin and screw, and in some cases, the part breaks. As a result, the spiral blade part may be disassembled or disconnected. Then, this invention makes it a subject to provide the screw unit and screw structure which do not produce these problems.

The screw unit of the present invention that solves the above problems includes a plurality of resin screw elements in which a spiral blade is integrally formed on the outer periphery of a shaft portion and a first shaft insertion hole is formed on the axis, The first shaft insertion hole 25 is provided with a first shaft having a square cross section in which a plurality of the screw elements are arranged in close contact with each other in the axial direction (Claim 1). .

  In the screw unit, the spiral wing is formed in the circumferential direction of the shaft portion by 270 degrees so that edge surfaces at both ends thereof extend in the radial direction from the shaft portion, and a plurality of screw elements are formed by the first shaft. Can be configured such that the edge surfaces 29 of the adjacent spiral blades 24 are in close contact with each other when they are aligned in close contact with each other.

  The screw structure of the present invention that solves the above-mentioned problems is formed by connecting any of the above screw units in the axial direction, and the first shaft has a second shaft insertion hole having a square cross section on the axis. A plurality of screw units are connected to each other by fitting both ends of a second shaft having a square cross section between the second shaft insertion holes of adjacent screw units. 3).

  In the screw structure, a stopper member 30 is inserted into the second shaft insertion hole 26 of the first shaft 22 from the outer periphery of the shaft portion of the screw element 21, and the stopper member 30 is used to insert the stopper member 30 into the second shaft insertion hole 26. The second shaft 31 can be configured to be prevented from moving in the axial direction (claim 4).

  Any of the above screw structures can be used as a screw structure constituting a cigarette butt treatment apparatus in a game hall (claim 5).

  The screw unit according to the present invention includes a plurality of resin screw elements in which a spiral blade is integrally formed on an outer periphery of a shaft portion and a first shaft insertion hole is formed on the axis thereof. And a first shaft having a square cross section that is inserted through each of the first shaft insertion holes and that closely contacts and aligns the plurality of screw elements in the axial direction.

  As described above, when a structure in which the screw element and the first shaft are in contact with each other on four sides of a square shape is adopted, the screw element and the first shaft can be prevented from rotating together without using pins or screws, and the alignment structure is simplified. . In addition, since the circumferential stress generated when the helical body rotates is received by the four rectangular contact surfaces, the circumferential stress is not concentrated on a part of the resin during rotation. There is no possibility of cracking of the resin due to stress concentration as in the case of adopting a co-rotation prevention measure such as a screw or a screw.

  In the screw unit, as described in claim 2, the spiral wing is formed in the circumferential direction of the shaft portion by 270 degrees so that edge surfaces at both ends thereof extend radially from the shaft portion, When the plurality of screw elements are brought into close contact with each other by the first shaft, the edge surfaces of adjacent spiral blades can be configured to make close contact with each other.

  If comprised in this way, since a screw element can be integrally molded and the metal mold | die for shaping | molding can also be simplified, a low-cost screw unit can be provided. Further, when forming the screw unit, the plurality of screw elements can be aligned and brought into close contact with each other.

  According to a third aspect of the present invention, there is provided a screw structure according to a third aspect of the present invention, wherein any one of the above screw units is connected in the axial direction, and a second shaft insertion hole having a square cross section is formed on the first shaft. A plurality of screw units are connected to each other by fitting both ends of a metal second shaft having a square cross section between the second shaft insertion holes of adjacent screw units. .

  Thus, when the end of the short second shaft having a square cross section is fitted to the second shaft insertion hole having a square cross section of the first shaft, the first shaft and the second shaft rotate together without a pin or a screw. In addition, the connecting structure is simplified, and a screw structure having a desired axial length can be easily configured from a plurality of screw units.

In the screw structure, as described in claim 4, a stopper member 30 is inserted into the second shaft insertion hole 26 of the first shaft 22 from the outer periphery of the shaft portion of the screw element 21. The axial movement of the second shaft 31 in the biaxial insertion hole 26 can be prevented.
Thus, when the second shaft insertion hole 26 of the first shaft is penetrated in the axial direction, the first shaft in which the second shaft insertion hole is integrally formed is extruded even if the shaft length of the first shaft is long. Can be manufactured easily and at low cost. Although the stopper member 30 is inserted into the shaft portion of the resin screw element 21, the circumferential stress generated when the helical body rotates as described above is received by the entire four contact surfaces of the square shape. Therefore, there is no possibility that the peripheral resin at the insertion portion of the stopper member 30 will crack.

  Any one of the above screw structures can be used as a screw structure constituting a cigarette butt treatment device in a game hall. Since the axial length of the screw structure installed in a game hall such as a pachinko parlor is quite long, the screw structure according to the present invention in which the axial length can be freely selected can be suitably used.

Next, the best embodiment of the present invention will be described based on the drawings. FIG. 1 is a perspective explanatory view for connecting screw units of the present invention by a second shaft, FIG. 2 is a front view and a side view of a screw element which is a component of the unit, and FIG. 3 is a III-III view of FIG. FIG. 4 is a schematic front view showing the connected state of the screw unit. FIG. 5 is an explanatory diagram of the usage state.
The screw unit 20 includes a resin screw element 21 and a metal first shaft 22 having a square cross section. The screw element 21 has a shaft portion 23 and a spiral blade 24 formed on the outer periphery thereof, and can be made by injection molding. The first shaft 22 can be made by extruding a metal material or the like, but it is desirable to use aluminum or an alloy thereof having good extrudability as the metal material. The first shaft 22 may be made of resin.

  To configure the screw unit 20, a plurality of screw elements 21 are closely aligned as shown in FIGS. The shaft portion 23 of the screw element 21 is formed with a first shaft insertion hole 25 having a square cross section on the axis thereof, and the first shaft 22 passes through the first shaft insertion hole 25. In order to connect the plurality of screw units 20 in the axial direction, a second shaft insertion hole 26 having a square cross section for fitting a second shaft 31 described later is formed on the end of the first shaft 22 on the axis thereof. Has been. Further, an insertion hole 27 for inserting a stopper member 30 described later is provided in the vicinity of the end portion of the shaft portion 23 of the screw element 21. An insertion hole 28 may be formed in advance in the vicinity of both ends of the first shaft 22 corresponding to the insertion hole 27.

2A is a front view of one screw element 21 shown in FIG. 1, and FIG. 2B is a left side view thereof. As shown in these drawings, the spiral blade 24 is formed in the circumferential direction of the shaft portion 23 by 270 degrees. Both ends of the spiral blade 24 coincide with both ends of the shaft portion 23, and the edge surfaces 29 are extended from the shaft portion 23 in the radial direction.
With this configuration, when a plurality of screw elements 21 are aligned in the axial direction as will be described later, a single elongated spiral blade can be formed in which the spiral blades 24 are in close contact with each other, and the screw element 21 is integrally formed. There is an advantage that the mold for molding can be simplified.

  As shown in FIG. 2B, in the present embodiment, the first shaft insertion hole 25 has a square cross-sectional shape. In addition, the cross-sectional shape of the 1st axis | shaft 22 inserted in alignment with the 1st axis | shaft insertion hole 25 is also square. The dimensions of the screw element 21 can be arbitrarily set according to the purpose, but as a typical dimension range when used as a cigarette butt treatment of a game hall, the shaft length of the shaft portion 23: 35 to 50 mm, the shaft portion 23 The diameter is set to 14 to 18 mm, the side length of the square first shaft insertion hole 6 provided in the shaft portion 23 is set to 4 to 7 mm, and the maximum diameter of the spiral blade 24 is set to about 40 mm to 50 mm.

For example, when the axial length (unit length) of the screw unit 20 is set to 1 m, the axial length of the first shaft 22 is also set to 1 m. In this case, if the shaft length of the shaft portion 23 of the screw element 21 is 50 mm, the screw unit 20 having a length of 1 m is formed by closely aligning the 20 screw elements 21 with the first shaft 22.
The four side lengths of the square cross section of the first shaft 22 are set in a range where the first shaft insertion hole 25 can be pushed into the first shaft insertion hole 25 relatively smoothly. For example, if the side length of the first shaft insertion hole 25 having a square cross section formed in the shaft portion 23 is set to 9 mm, it is desirable that the side length of the first shaft 22 be slightly smaller than that.

  As shown in FIGS. 1 and 4, the screw unit 20 is configured by aligning a plurality of screw elements 21 in close contact with each other by a single first shaft 22. The screw unit 20 is thus configured. First, the first shaft 22 is inserted while being sequentially pushed into the first shaft insertion hole 25 of the screw element 21. At that time, a continuous elongated spiral body is formed by bringing the edge surfaces 29 of the adjacent spiral blades 24 into close contact with each other. At this time, since the first shaft 22 and the first shaft insertion hole 25 are a square table and the spiral blade 24 of the screw element 21 is formed 270 degrees around the axis, adjacent elements rotate 90 degrees with each other. In this state, they can be connected to each other.

  By connecting the plurality of screw units 20 formed as described above to each other via a second shaft described later, a screw structure 32 having a desired axial length can be obtained. At that time, in order to prevent the second shaft 31 from moving from the end of the second shaft insertion hole 26 to the inside, the following method can be employed.

FIG. 3 uses a split pin as the stopper member 30 and is formed on two legs that are overlapped by folding the central portion of one wire material. The stopper member 30 is inserted from the outer periphery of the shaft portion 23 through the insertion hole 23 and the insertion hole 28 of the first shaft 22.
In order to mount the stopper member 30 as shown in FIG. 3, first, the insertion hole 27 of the shaft portion 23 and the insertion hole 28 of the first shaft 22 are matched. Alternatively, a rotary drill is inserted into the insertion hole 27 of the shaft portion 23 of the element 21 while the first shaft 22 is inserted, and the insertion hole 28 is formed in the first shaft 22.
Next, the leg portion of the stopper member 30 is inserted into the insertion hole 27 through one of the holes, passed through the insertion holes 28 on both sides of the first shaft 22, and the outer periphery from the insertion hole 27 on the opposite side of the shaft portion 23. It can be pulled out to the surface and the leading end of the two legs pulled out can be folded along the outer peripheral surface.

  4 is a partial cross-sectional view of a screw structure 32 formed by connecting ends of the screw unit 20 shown in FIG. 1 with a second shaft 31, and the connection state of the screw unit 20 and the second shaft 31 is as follows. Understandable.

The second shaft 31 is a short shaft made of metal having a square cross section. For example, a relatively high-strength metal such as aluminum, iron, or stainless steel can be made by extrusion molding, but it is made of a high-strength resin. There may be.
In order to connect the second shaft 31 to the screw unit 20, the tip end portion of the second shaft 31 is pushed into and fitted into the second shaft insertion hole 26 of the first shaft 22 at the end portion of the screw unit 20. At this time, since the stopper member 30 is mounted at a predetermined position from the end of the second shaft insertion hole 26 as described above, the second shaft 31 enters deeper than the predetermined position of the second shaft insertion hole 26. (Or move) is impossible.

  One end of the second shaft 31 is connected to the end of one screw unit 20, and the other end is connected to the end of the other clew unit 20. When the other end becomes one end of the screw structure 32, as shown in FIG. 5, the screw unit 20 is connected to the drive motor 10 via the second shaft 31, and the other end is the bearing portion. 11 is supported in the same manner.

  The screw unit and screw structure of the present invention can be used, for example, in a cigarette butt treatment apparatus in a game arcade.

Explanatory drawing which connects the screw units 20 of this invention. The front view and left side of one screw element 21 of the screw unit. FIG. 3 is a schematic cross-sectional view taken along the line III-III in FIG. 1 and shows a state where the stopper member 3 is mounted on the screw unit 20. FIG. 4 is a partially broken front view of the clew structure 32. The partially broken explanatory view which shows one example of a buttocks processing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cushion processing apparatus 2 Template 3 Housing 4 Cushion conveyance body 5 Game equipment 6 Fall hole 7 Shaft body 8 Screw structure 9 Joint 10 Drive motor 11 Bearing part 12 Butt collection part 13 Box 14 Handle 15 Opening part

20 Screw unit 21 Screw element 22 First shaft 23 Shaft portion 24 Spiral blade 25 First shaft insertion hole 26 Second shaft insertion holes 27, 28 Insertion hole 29 Edge surface 30 Stopper member 31 Second shaft 32 Screw structure

Claims (5)

  A plurality of resin screw elements (21) having a spiral blade (24) integrally formed on the outer periphery of the shaft portion (23) and having a first shaft insertion hole (25) formed on the axis thereof, A first shaft (22) having a square cross section, which is inserted through the first shaft insertion hole (25) and aligns the screw elements (21) in close contact with each other in the axial direction, is provided. Screw unit.   The spiral blade (24) according to claim 1, wherein the spiral blade (24) is formed in the circumferential direction of the shaft portion (23) by 270 degrees, and the edge surfaces (29) at both ends thereof are extended from the shaft portion (23) in the radial direction. The edge surfaces (29) of the adjacent spiral blades (24) are brought into close contact with each other when the plurality of screw elements (21) are brought into close contact with each other by the first shaft (22). Screw unit to be used.   A screw structure (32) in which a plurality of screw units (20) according to claim 1 or 2 are connected in an axial direction, wherein said first shaft (22) has a second shaft having a square cross section. An insertion hole (26) is formed on the axis, and between the second shaft insertion holes (26) of the adjacent screw units (20), both ends of the second shaft (31) having a square cross section are fitted. A screw structure characterized in that a plurality of screw structures (32) are connected to each other.   The stopper member (30) is inserted into the second shaft insertion hole (26) of the first shaft (22) from the outer periphery of the shaft portion of the screw element (21), and the stopper member (30) A clew structure characterized in that the axial movement of the second shaft (31) in the biaxial insertion hole (26) is prevented. The screw structure according to claim 3 or 4, wherein the screw structure (32) is used as a screw structure constituting a cigarette butt processing apparatus in a game arcade.

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