Cigarette butt extinguishing device and ashtray device

Abstract

The present invention provides a cigarette butt extinguishing device that can suppress the accumulation of cigarette butts even when long cigarette butts are inserted, and an ashtray device equipped with such a cigarette butt extinguishing device. [Solution] The cigarette butt fire extinguishing device 12 comprises a device housing 121 and a plurality of fire extinguishing rollers 122 that extinguish the fire by compressing and crushing the cigarette butts received at the cigarette butt receiving port 121a while transporting and discharging them downwards. The plurality of fire extinguishing rollers 122 are characterized in that some of the rollers arranged on the side of the cigarette butt receiving port 121a, including at least a pair of rollers that compress the cigarette butts closest to the cigarette butt receiving port 121a, are large-diameter fire extinguishing rollers 122a with a larger roller diameter than the other rollers, and the other rollers are small-diameter fire extinguishing rollers 122b arranged on the side of the cigarette butt discharge port 121b.

Description

Technical Field

[0001] The present invention relates to a cigarette butt extinguishing device for extinguishing the inserted cigarette butts and an ashtray device provided with such a cigarette butt extinguishing device.

Background Art

[0002] Conventionally, a cigarette butt extinguishing device that is mounted on an ashtray device installed in a smoking space and extinguishes the inserted cigarette butts is known (see, for example, Patent Document 1). In this cigarette butt extinguishing device, the cigarette butts are extinguished by being narrowly pressed and crushed by a plurality of extinguishing rollers.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, among the cigarette butts, there are those that are longer than other general lengths. When such long cigarette butts are inserted, the cigarette butts may stay and the extinguishing may be delayed.

[0005] Therefore, the present invention focuses on the above problems and aims to provide a cigarette butt extinguishing device that can suppress the retention of cigarette butts even when long cigarette butts are inserted, and an ashtray device provided with such a cigarette butt extinguishing device.

Means for Solving the Problems

[0006] To solve the above problems, the cigarette butt fire extinguishing device comprises a device housing having a cigarette butt receiving port on the upper side in the vertical direction and a cigarette butt discharge port on the lower side, and a plurality of fire extinguishing rollers inside the device housing that extinguish the fires of cigarette butts received at the cigarette butt receiving port by compressing and crushing them between each other, while transporting and discharging them downward, wherein the plurality of fire extinguishing rollers include at least a pair of rollers that compress the cigarette butts closest to the cigarette butt receiving port, some of which are large-diameter fire extinguishing rollers with a larger roller diameter than the other rollers, and small-diameter fire extinguishing rollers which are the other rollers that are located on the cigarette butt discharge port side. It is characterized by having the following features.

[0007] Furthermore, in order to solve the above problems, the ashtray device is characterized by comprising: the above-mentioned cigarette butt extinguishing device; an ashtray housing having a columnar appearance that is erected in a predetermined installation location, with a cigarette butt input section at its upper end, and the cigarette butt extinguishing device being housed on the upper end side so as to be located below the cigarette butt input section; and a collection box housed in the ashtray housing so as to be located below the cigarette butt extinguishing device, for collecting the cigarette butts discharged from the cigarette butt extinguishing device. [Effects of the Invention]

[0008] According to the above-described cigarette butt extinguishing device and ashtray device, even if long cigarette butts are inserted, the accumulation of cigarette butts can be suppressed. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view showing an ashtray device according to one embodiment. [Figure 2] Figure 1 is an exploded perspective view showing the ashtray enclosure with the opening door open and the components, including the cigarette butt extinguishing device according to one embodiment, removed. [Figure 3] This is a side view of the ashtray device shown in Figure 1, viewed from the direction of arrow V11 in Figure 1. [Figure 4] This is a side perspective view of the ashtray device shown in Figure 1, with its internal structure viewed through from the direction of arrow V11 in Figure 1. [Figure 5] Figure 4 is an enlarged perspective view showing a cigarette butt extinguishing device, which is shown in a perspective view. [Figure 6] Figure 5 shows a top view of the cigarette butt extinguishing device, which is shown in an enlarged perspective view in Figure 5, as seen from the direction of arrow V12 in Figure 5. [Modes for carrying out the invention]

[0010] The following describes one embodiment of a cigarette butt extinguishing device and an ashtray device.

[0011] Figure 1 is a perspective view showing an ashtray device according to one embodiment, and Figure 2 is an exploded perspective view showing the ashtray housing shown in Figure 1 with the opening door open and the components including the cigarette butt extinguishing device according to one embodiment removed. Figure 3 is a side view of the ashtray device shown in Figure 1, viewed from the direction of arrow V11 in Figure 1, and Figure 4 is a side perspective view of the ashtray device shown in Figure 1, showing the internal structure viewed from the direction of arrow V11 in Figure 1.

[0012] The ashtray device 10 in this embodiment is a device that is installed and used in a predetermined location such as a smoking area, smoking space, pachinko parlor, or commercial facility, and comprises an ashtray housing 11, a cigarette butt extinguishing device 12, and a collection box 13.

[0013] The ashtray housing 11 has a rectangular prism-like appearance and is erected at the above-mentioned installation location. A cigarette butt insertion section 112 is provided at the upper end of the rectangular cylindrical outer wall 111. The outer wall 111 is a sheet metal processed member formed by bending a metal plate. The cigarette butt insertion section 112 comprises a rectangular frame-shaped top plate 112a, a mesh tray 112b, and a hopper 112c. The top plate 112a is a metal frame member that fixes the mesh tray 112b and the hopper 112c to the upper end opening of the rectangular cylindrical outer wall 111. The mesh tray 112b is a mesh-like metal cover member that prevents foreign objects other than cigarette butts from being inserted. The hopper 112c is a rectangular funnel-shaped metal member that guides cigarette butts that have been inserted through the mesh tray 112b to the cigarette butt extinguishing device 12 below.

[0014] Inside the ashtray housing 11, a support shelf 113 is provided to position and support the cigarette butt extinguishing device 12 below the hopper 112c in the cigarette butt collection section 112. The cigarette butt extinguishing device 12 is housed below the hopper 112c while being supported by this support shelf 113.

[0015] Furthermore, in addition to the outer peripheral wall 111, cigarette butt insertion section 112, and support shelf 113 described above, the ashtray housing 11 also includes a base cover 114 and a collection box support bottom 115. The base cover 114 is a rectangular metal plate placed on the installation site of the ashtray device 10, and a rectangular collection box support bottom 115 is fixed to the center of the upper surface of this base cover 114. The rectangular cylindrical outer peripheral wall 111 is erected and fixed to the upper surface of the base cover 114 so as to accommodate the collection box support bottom 115 inside the lower end opening. The collection box support bottom 115 supports the bottom of the collection box 13 placed on its upper surface inside the outer peripheral wall 111. In this embodiment, one of the four walls that make up the outer peripheral wall 111 of the ashtray housing 11 is an opening and closing door 111a that opens to allow the collection box 13 to be inserted and removed in the insertion and removal direction D11. The opening and closing door 111a is a rectangular plate-shaped part that makes up most of the wall portion of the above-mentioned side, and it is opened and closed by rotating around the opening and closing axis X11 along the long side of the right side when the opening and closing door 111a side is facing forward.

[0016] Furthermore, recessed handles 116 are provided on the left and right sides of the outer wall 111, facing the side with the opening / closing door 111a, to serve as a grip when carrying the ashtray device 10. In addition, the opening / closing door 111a is provided with a handle 111a-1 that serves as a grip when opening and closing the door and also has a locking function to lock the door when it is closed.

[0017] The cigarette butt extinguishing device 12 is housed in the upper end of the ashtray housing 11, positioned below the cigarette butt insertion section 112. It is a mechanism that extinguishes cigarette butts inserted from the cigarette butt insertion section 112 and discharges them downwards. The details of this cigarette butt extinguishing device 12 will be explained later with reference to a separate diagram.

[0018] The ash tray housing 11 houses the collection box 13 formed of resin into a bottomed rectangular tube shape and disposed below the cigarette butt extinguishing device 12 to collect the cigarette butts discharged from the cigarette butt extinguishing device 12. Further, on the wall portion facing the opening / closing door 111a when the collection box 13 is housed in the ash tray housing 11, a handle 133 serving as a clue for taking in and out the collection box 13 in the taking in and out direction D11 is provided.

[0019] Next, details of the cigarette butt extinguishing device 12 that extinguishes the next input cigarette butts and discharges them into the collection box 13 will be described.

[0020] FIG. 5 is an enlarged perspective view showing an enlarged view of the cigarette butt extinguishing device shown in FIG. 4 in a perspective view, and FIG. 6 is a top view of the cigarette butt extinguishing device shown in FIG. 5 in an enlarged perspective view as viewed from the direction of arrow V12 in FIG. 5.

[0021] The cigarette butt extinguishing device 12 is a device that conveys downward and discharges the cigarette butts received at the cigarette butt receiving port 121a while extinguishing them by narrowly pressing and crushing them between a plurality (four in this embodiment) of extinguishing rollers 122. This cigarette butt extinguishing device 12 includes a device housing 121, four extinguishing rollers 122, and a drive mechanism 123.

[0022] The device housing 121 is a rectangular box formed of a metal plate, with a cigarette butt receiving port 121a provided on the upper side in the vertical direction D12 and a cigarette butt discharge port 121b provided on the lower side. The four extinguishing rollers 122 are roller members pivotally supported inside the device housing 121 so as to be rotatable around a rotating shaft 122-1 installed parallel to each other. These four extinguishing rollers 122 rotate in four rotation directions D13a, D13b, D13c, D13d that enable downward conveyance while bringing their circumferential surfaces into contact with each other. By this rotation, the four extinguishing rollers 122 convey downward toward the cigarette butt discharge port 121b while narrowly pressing and crushing the cigarette butts between each other to extinguish them. The drive mechanism 123 is a motor mechanism that rotationally drives only one of the four extinguishing rollers 122 and rotationally drives all of the four extinguishing rollers 122 by rotationally driving the other rollers in a driven manner.

[0023] In this embodiment, the four fire extinguishing rollers 122 are configured to include large-diameter fire extinguishing rollers 122a and small-diameter fire extinguishing rollers 122b. The large-diameter fire extinguishing rollers 122a are a subset of rollers located on the side of the cigarette butt collection port 121a, including at least a pair of rollers that clamp cigarette butts closest to the cigarette butt collection port 121a, and have a larger roller diameter than the other rollers. In this embodiment, the large-diameter fire extinguishing rollers 122a consist only of the pair of rollers on the side of the cigarette butt collection port 121a. The small-diameter fire extinguishing rollers 122b are a subset of rollers located on the side of the cigarette butt discharge port 121b, other than the large-diameter fire extinguishing rollers 122a, and have a smaller roller diameter than the large-diameter fire extinguishing rollers 122a. In this embodiment, the small-diameter fire extinguishing rollers 122b consist only of the pair of rollers on the side of the cigarette butt discharge port 121b. More specifically, regarding the roller diameters of these large-diameter fire extinguishing rollers 122a and small-diameter fire extinguishing rollers 122b, the roller diameter φ11 of the large-diameter fire extinguishing roller 122a is at least twice (twice in this embodiment) the length of the roller diameter φ12 of the small-diameter fire extinguishing roller 122b.

[0024] The cigarette butt receiving port 121a in the device housing 121 has a square opening 121a-1 whose size corresponds to the dimensions of the large-diameter fire extinguishing roller 122a located directly below the cigarette butt receiving port 121a, including the roller diameter φ11. First, the large-diameter fire extinguishing roller 122a has a roller length L11 that is slightly longer than the roller diameter φ11, and the square opening 121a-1 in the cigarette butt receiving port 121a is a square opening with a side length L12 that is the length between the roller diameter φ11 and the roller length L11. Furthermore, the roller dimensions of the large-diameter fire extinguishing roller 122a are set such that the side length L12 of the square opening 121a-1 is longer than the length of the longest cigarette butt expected to be received.

[0025] Furthermore, in this embodiment, a clamping section P12 of different diameters is formed when a first large-diameter fire extinguishing roller 122a-1 and a small-diameter fire extinguishing roller 122b, which are one of a pair of large-diameter fire extinguishing rollers 122a that face each other and constitute the large-diameter clamping section P11, face each other. The small-diameter fire extinguishing roller 122b (first small-diameter fire extinguishing roller 122b-1) that constitutes this clamping section P12 of different diameters is positioned as follows. That is, the rotation axis 122-1 of the first small-diameter fire extinguishing roller 122b-1 is positioned such that it is offset from the large-diameter clamping section P11 toward the second large-diameter fire extinguishing roller 122a-2 side of the pair of large-diameter fire extinguishing rollers 122a in the lateral width direction D14, which is perpendicular to the vertical direction D12. Due to this misalignment, the first small-diameter fire extinguishing roller 122b-1 is positioned to fit between the first large-diameter fire extinguishing roller 122a-1 and the second large-diameter fire extinguishing roller 122a-2. In addition, the second small-diameter fire extinguishing roller 122b-2 of the pair of small-diameter fire extinguishing rollers 122b is positioned below the first large-diameter fire extinguishing roller 122a-1.

[0026] The drive mechanism 123 rotates only one of the four fire extinguishing rollers 122, but in this embodiment, the drive mechanism 123 rotates only the first small-diameter fire extinguishing roller 122b-1, which faces the first large-diameter fire extinguishing roller 122a-1 and forms a different-diameter clamping section P12. The second small-diameter fire extinguishing roller 122b-2 rotates in a driven manner via the small-diameter clamping section P13 formed between it and the first small-diameter fire extinguishing roller 122b-1. The first large-diameter fire extinguishing roller 122a-1, which forms a different-diameter clamping section P12 between it and the first small-diameter fire extinguishing roller 122b-1, rotates in a driven manner via this different-diameter clamping section P12. The second large-diameter fire extinguishing roller 122a-2, which forms a large-diameter clamping section P11 between it and the first large-diameter fire extinguishing roller 122a-1, rotates in a driven manner via this large-diameter clamping section P11. In this way, the drive mechanism 123 rotates all four fire extinguishing rollers 122 by rotating only the first small-diameter fire extinguishing roller 122b-1. Through this rotational drive, the cigarette butts received at the cigarette butt receiving port 121a are crushed and extinguished by being squeezed by the large-diameter clamping section P11, the different-diameter clamping section P12, and the small-diameter clamping section P13, and then discharged from the cigarette butt discharge port 121b to the collection box 13.

[0027] According to the cigarette butt extinguishing device 12 and ashtray device 10 of the embodiment described above, some of the rollers located on the side of the cigarette butt receiving port 121a are large-diameter extinguishing rollers 122a, which have a larger roller diameter φ11 than the other rollers. This makes it possible to enlarge the cigarette butt receiving port 121a to match the roller diameter φ11 of the large-diameter extinguishing rollers 122a. The large roller diameter φ11 of the large-diameter extinguishing rollers 122a, combined with the enlarged cigarette butt receiving port 121a, makes it possible to suppress the accumulation of cigarette butts even when long cigarette butts are inserted.

[0028] In this embodiment, the roller diameter φ11 of the large-diameter fire extinguishing roller 122a is at least twice as long as the roller diameter φ12 of the small-diameter fire extinguishing roller 122b. This configuration further reduces the accumulation of long cigarette butts when they are inserted.

[0029] Furthermore, in this embodiment, the first small-diameter fire extinguishing roller 122b-1, which constitutes the different-diameter clamping section P12 with respect to the first large-diameter fire extinguishing roller 122a-1, is positioned such that its rotation axis 122-1 is shifted toward the second large-diameter fire extinguishing roller 122a-2 side and fits between the pair of large-diameter fire extinguishing rollers 122a. This roller arrangement saves space for arranging the fire extinguishing rollers 122 inside the device housing 121, thus further reducing the size of the device.

[0030] Furthermore, in this embodiment, the drive mechanism 123 rotates only one small-diameter fire extinguishing roller 122b out of the multiple (four) fire extinguishing rollers 122, causing the other rollers to rotate as if driven, thereby rotating all four fire extinguishing rollers 122. With this configuration, since only one drive mechanism is required, manufacturing costs can be reduced.

[0031] Furthermore, in this embodiment, the drive mechanism 123 rotates only the first small-diameter fire extinguishing roller 122b-1, which faces the first large-diameter fire extinguishing roller 122a-1 and constitutes the different-diameter clamping section P12. With this configuration, the other fire extinguishing rollers 122, including the opposing large-diameter fire extinguishing roller 122a, are driven by the drive of the small-diameter fire extinguishing roller 122b, so that the large-diameter fire extinguishing roller 122a on the cigarette butt receiving port 121a side can be driven sufficiently powerfully while suppressing the driving force.

[0032] It should be noted that the embodiments described above merely represent typical forms of cigarette butt extinguishing devices and ashtray devices. These are not limited to these forms and can be implemented in various modified ways.

[0033] For example, in the embodiments described above, a rectangular box-shaped cigarette butt extinguishing device 12 and a square prism-shaped ashtray device 10 are given as examples of cigarette butt extinguishing devices and ashtray devices. However, the cigarette butt extinguishing devices and ashtray devices are not limited to these. The cigarette butt extinguishing devices and ashtray devices may be cylindrical boxes, columnar, or polygonal boxes or polygonal prisms other than squares, and the specific shape of the cigarette butt extinguishing devices and ashtray devices is not limited to these.

[0034] Furthermore, in the above-described embodiment, a cigarette butt extinguishing device 12 is exemplified as an example of a cigarette butt extinguishing device, which is equipped with four extinguishing rollers 122 consisting of a pair of large-diameter extinguishing rollers 122a and a pair of small-diameter extinguishing rollers 122b. However, the configuration of the multiple extinguishing rollers in the cigarette butt extinguishing device is not limited to this. The large-diameter rollers are not limited to the specific number of rollers, as long as they are some of the rollers located on the side of the cigarette butt receiving port, including at least a pair of rollers that clamp the cigarette butts closest to the cigarette butt receiving port. Similarly, the specific number of small-diameter extinguishing rollers is not limited as long as they have a smaller diameter than the large-diameter rollers and are located on the side of the cigarette butt discharge port.

[0035] Furthermore, in the embodiments described above, a large-diameter fire extinguishing roller 122a is exemplified as an example of a large-diameter fire extinguishing roller, in which the roller diameter φ11 is at least twice the length of the roller diameter φ12 of the small-diameter fire extinguishing roller 122b. However, the large-diameter fire extinguishing roller is not limited to this, and its roller diameter may be less than twice the length of the small-diameter fire extinguishing roller's roller diameter, as long as it is longer than the roller diameter of the small-diameter fire extinguishing roller. However, as mentioned above, by making the roller diameter φ11 of the large-diameter fire extinguishing roller 122a at least twice the length of the roller diameter φ12 of the small-diameter fire extinguishing roller 122b, the accumulation of long cigarette butts can be further suppressed.

[0036] Furthermore, in the embodiment described above, as an example of roller arrangement, a roller arrangement is shown in which the first small-diameter fire extinguishing roller 122b-1 constituting the different-diameter clamping section P12 is positioned between a pair of large-diameter fire extinguishing rollers 122a. However, the roller arrangement is not limited to this, and the specific arrangement can be arbitrarily set as long as the clamping section is appropriately formed. However, as mentioned above, the above-described roller arrangement in which the first small-diameter fire extinguishing roller 122b-1 is positioned between a pair of large-diameter fire extinguishing rollers 122a saves space for the fire extinguishing rollers 122, further reducing the size of the device.

[0037] Furthermore, in the embodiments described above, a cigarette butt extinguishing device 12 is exemplified as an example of a cigarette butt extinguishing device in which the drive mechanism 123 rotates only one small-diameter extinguishing roller 122b, while the other rollers are driven to rotate. However, the cigarette butt extinguishing device is not limited to this, and it is also possible to provide individual drive mechanisms for multiple extinguishing rollers, or to provide drive mechanisms for each group of rollers, such as large-diameter extinguishing rollers and small-diameter extinguishing rollers. Any installation method can be adopted for how the drive mechanism is specifically installed. However, as mentioned above, manufacturing costs can be reduced by rotating only one small-diameter extinguishing roller 122b with the drive mechanism 123, while the other extinguishing rollers 122 are driven to rotate.

[0038] Furthermore, in the embodiments described above, as an example of a small-diameter fire extinguishing roller that is rotationally driven by the drive mechanism, the first small-diameter fire extinguishing roller 122b-1, which forms a different-diameter clamping section P12 opposite the first large-diameter fire extinguishing roller 122a-1, is exemplified. However, the small-diameter fire extinguishing roller that is rotationally driven by the drive mechanism is not limited to this, and it is not a question of which specific small-diameter fire extinguishing roller is targeted for drive, as long as it is possible to drive other fire extinguishing rollers. However, as described above, by targeting the first small-diameter fire extinguishing roller 122b-1 that forms the different-diameter clamping section P12, it is possible to sufficiently drive the large-diameter fire extinguishing roller 122a on the cigarette butt receiving port 121a side with sufficient force while suppressing the driving force. [Explanation of Symbols]

[0039] 10 Ashtray device 11 Ashtray enclosure 12. Cigarette butt fire extinguishing device 13 Collection boxes 111 Outer wall 111a Opening and closing door 111a-1 Handle with locking function 112 Cigarette butt disposal section 112a Top plate 112b Drain cover 112c Hopper 113 Support shelf 114 Base Cover 115 Collection box support base 116 Recessed handle 121 Device housing 121a Cigarette butt collection slot 121a-1 square opening 121b Butt outlet 122 Fire Extinguishing Roller 122-1 Rotation axis 122a Large diameter fire extinguishing roller 122a-1 First large-diameter fire extinguishing roller 122a-2 Second large diameter fire extinguishing roller 122b Small diameter fire extinguishing roller 122b-1 First small diameter fire extinguishing roller 122b-2 Second small diameter fire extinguishing roller 123 Drive mechanism 133 Handle D11 Direction of entry / exit D12 Vertical direction D13a, D13b, D13c, D13d Rotation direction D14 Width direction L11 Roller Length L12 Side length P11 Large diameter clamping section P12 Different diameter clamping part P13 Small diameter clamping part X11 Opening / Closing Axis φ11, φ12 roller diameter

Claims

1. The device housing has a cigarette butt collection opening on the upper side in the vertical direction and a cigarette butt discharge opening on the lower side, The device housing includes a plurality of fire extinguishing rollers that, inside the cigarette butt receiving port, transport and discharge downwards while extinguishing the fire by compressing and crushing the cigarette butts between them, The aforementioned multiple fire extinguishing rollers A portion of the rollers positioned on the side of the cigarette butt collection opening, which includes at least a pair of rollers that clamp the cigarette butts closest to the cigarette butt collection opening, is a large-diameter fire extinguishing roller with a larger roller diameter than the other rollers, As other rollers, a small-diameter fire extinguishing roller is arranged on the side of the cigarette butt outlet, A cigarette butt fire extinguishing device characterized by being equipped with the following features.

2. The cigarette butt extinguishing device according to claim 1, characterized in that the diameter of the large-diameter extinguishing roller is at least twice the length of the diameter of the small-diameter extinguishing roller.

3. The cigarette butt extinguishing device according to claim 1, wherein one of the pair of large-diameter fire extinguishing rollers that form a large-diameter clamping section facing each other, the first large-diameter fire extinguishing roller and the one small-diameter fire extinguishing roller that forms a clamping section of different diameters facing each other, is positioned such that the axis of rotation of the small-diameter fire extinguishing roller is shifted toward the second large-diameter fire extinguishing roller of the pair of large-diameter fire extinguishing rollers in the lateral width direction perpendicular to the vertical direction with respect to the large-diameter clamping section, and is positioned to fit between the first large-diameter fire extinguishing roller and the second large-diameter fire extinguishing roller.

4. The cigarette butt extinguishing device according to claim 1, further comprising a drive mechanism that rotates only one of the plurality of fire extinguishing rollers, the small-diameter fire extinguishing roller, and drives the other rollers to rotate, thereby rotating all of the plurality of fire extinguishing rollers.

5. The cigarette butt extinguishing device according to claim 4, characterized in that the drive mechanism rotates only one of the small-diameter fire extinguishing rollers that forms a clamping portion of different diameters, facing the first large-diameter fire extinguishing roller of a pair of large-diameter fire extinguishing rollers that form a large-diameter clamping portion facing each other.

6. A cigarette butt extinguishing device according to any one of claims 1 to 5, An ashtray housing having a columnar appearance that is erected in a predetermined location, with a cigarette butt collection section at its upper end, and the cigarette butt extinguishing device housed on the upper end side so as to be located below the cigarette butt collection section, An ashtray device characterized by comprising a collection box housed in the ashtray casing so as to be positioned below the cigarette butt extinguishing device, for collecting the cigarette butts discharged from the cigarette butt extinguishing device.

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