Heated tobacco pullout tool

Abstract

To provide a heated tobacco pullout tool which can pull out a remaining part in a simple operation by achieving stable and reliable engagement between the pullout tool and a filter part.SOLUTION: A heated tobacco pullout tool comprises a pullout tool body including, at a tip end side, a locking part to be inserted into a cylindrical hollow part formed at a center of a filter remaining in a housing part, and a push-in part freely slidably disposed in an axial direction of the pullout tool body. The locking part comprises a plurality of locking pieces extending in the axial direction and including, at the tips, a plurality of locking claws projecting radially outward of the locking part. A diameter of a virtual circumference formed by circumferentially connecting locking-claw outer diameter ends, the outside ends of the locking claws, is smaller than an inner diameter of the hollow part. The push-in tool includes a push rod on a tip side, and the push rod moves inside the pull-out tool body to move the locking-claw outer diameter ends inserted into the hollow part toward the radially outward of the locking part, and makes the locking-claw outer diameter ends plunge into a lower end-side inner wall surface of the hollow part.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] This invention relates to a heated tobacco removal tool that is used to pull out the portion of a tobacco cartridge or heat stick that remains in the storage compartment of a heated smoking device when the tobacco cartridge or heat stick that is inserted into the heated smoking device and used therein breaks off and remains inside the storage compartment of the heated smoking device. [Background technology]

[0002] The general structure and form of a tobacco cartridge, heat stick, etc., which is inserted into a heated smoking device for use, will be described with reference to Fig. 1. Hereinafter, such tobacco cartridges and heat sticks will be collectively referred to as cartridges in this specification.

[0003] As shown in Fig. 1, the cartridge 1 is generally cylindrical and has a structure in which a filter section 2a, a tobacco leaf section 3, a filter section 2b, and a filter section 2c are layered from the front end (lower side in Fig. 1) that is inserted into the heated smoking device to the rear end (upper side in Fig. 1). The axial length from the front end to the rear end in the vertical direction in Fig. 1 is about 30 mm to 45 mm, and the diameter is about 5 to 6 mm. The whole is wrapped in a wrapping material or the like to form a single cylinder like a conventional cigarette, and is the same size as a conventional cigarette or slightly smaller than a conventional cigarette.

[0004] In general, the filter portions 2a, 2b, and 2c are all formed of delicate fibrous bodies, and the tobacco leaf portion 3 has a structure containing tobacco leaves and the like.

[0005] Moreover, the filter section 2b, which is present between the tobacco leaf section 3 and the rearmost filter section 2c, is generally cylindrical and extends axially, as shown in FIG. 1, and has a hollow section 4 with an inner diameter of about 3 mm.

[0006] When such a cartridge 1 is inserted into a heated smoking device and used, as shown in Figure 2, the upper end of the filter section 2b is inserted into the storage section of the heating device main body 5 that constitutes the heated smoking device, and the rearmost filter section 2c protrudes from the heating device main body 5.

[0007] As a result, as shown in Figure 3, the filter part 2c protruding from the heating device main body 5 breaks at the part between it and the filter part 2b, i.e., it breaks in the middle, leaving the filter part 2b, the tobacco leaf part 3, and the filter part 2a remaining in the storage section of the heating device main body 5 that constitutes the heated smoking device.

[0008] In such a case, a heated tobacco extraction tool is used to extract the filter portion 2b, tobacco leaf portion 3, and filter portion 2a remaining in the storage portion of the heating device main body 5 constituting the heated smoking device from the heating device main body 5 constituting the heated smoking device. Various proposals have been made regarding heated tobacco extraction tools.

[0009] For example, Patent Document 1 describes a tool that includes a handle, a shaft, and an insertion part formed at the tip of the shaft. The handle is formed of a circular flat plate to facilitate rotation, and the shaft is formed in a spiral shape. The spiral shaft is rotated and pushed into the filter part remaining in the housing of the heating device main body that constitutes the heated smoking tool, with the insertion part at the front, and then pulled out.

[0010] Patent Document 2 describes a tool having a long rod-shaped main body and an inverted trapezoid part provided near one end of the main body. The tool is inserted with the end having the inverted trapezoid part at the front into the filter part remaining in the housing of the heating device main body that constitutes the heated smoking tool, causing the inverted trapezoid part to engage with the filter part, and then pulling it out.

[0011] As described below, the heated tobacco extraction tools described in Patent Documents 1 and 2 inevitably damage the filter portion, which is made of a delicate fibrous material, when the tool is pushed into the filter portion remaining in the storage portion of the heating device main body that constitutes the heated smoking device and an attempt is made to fix the tool and the filter portion together.

[0012] As with the inventions described in Patent Documents 1 and 2 above, the invention described in embodiment 3 of Patent Document 3 inevitably suffers damage to the filter portion formed from a delicate fibrous material when a tool is pushed into the filter portion remaining in the storage section of the heating device main body that constitutes the heated smoking device to engage between the tool and the filter portion.

[0013] On the other hand, the invention described in the first and second embodiments of Patent Document 3 is different from this, and is as follows. This extraction tool has a rod-shaped part that can be inserted into a cylindrical hollow part formed in the center of the filter part remaining in the storage part of the heating device main body constituting the heated smoking device, and a bent part formed at the tip of the rod-shaped part and extending by bending at a predetermined angle with respect to the rod-shaped part. The length of the bent part extending in the radial direction of the rod-shaped part by bending from the tip of the rod-shaped part is smaller than the inner diameter R1 (FIG. 3) of the storage part. When inserting the extraction tool into the cylindrical hollow part with the bent part formed at the tip of the rod-shaped part as the leading edge, the tool is inserted at a slight angle to the axial direction in which the cylindrical hollow part extends, and then the tool is returned to the direction parallel to the axial direction and continues to be inserted, piercing the tip of the bent part into the inner peripheral wall of the cylindrical hollow part. The tool described here is one that performs extraction by raising the extraction tool in this state. [Prior art documents] [Patent documents]

[0014] [Patent Document 1] Utility Model Registration No. 3226539 [Patent Document 2] Utility Model Registration No. 3241489 [Patent Document 3] Patent No. 7282970 Summary of the Invention [Problem to be solved by the invention]

[0015] The case of performing extraction using the heated tobacco extraction tool described in Patent Document 2 will be described with reference to Figures 4 and 5 as follows. An inverted trapezoidal section, which is provided at the tip of a long rod-shaped main body and has an outer diameter larger than the inner diameter R1 (Figure 3) of the hollow section 4 of the filter section 2b, is pushed into the filter section 2b as shown by arrow 30 in Figure 4. It is then pulled out upward as shown by arrow 31 in Figure 5.

[0016] The outer diameter of the inverted trapezoidal part provided at the tip of the long rod-shaped main body is larger than the inner diameter R1 (FIG. 3) of the hollow part 4 of the filter part 2b, as shown in FIG. 4. Therefore, when the tool is pushed in as shown in FIG. 4, the filter part 2b formed of a delicate fibrous body is damaged. In the state shown in FIG. 4 where the tool is being pushed in, the inner wall of the upper side of the filter part 2b, indicated by the symbols 2b1 and 2b2, is damaged. Therefore, when the removal tool is removed, the engagement between the damaged filter part and the tool becomes unstable, and the removal may not be performed stably. Sometimes, the engagement between the inverted trapezoidal part of the tool and the inner walls 2b1 and 2b2 of the upper side of the filter part 2b becomes unstable, and it may even occur that only the tool is removed, as shown in FIG. 5, while the filter part 2b and the like are left in the storage part of the heating device main body 5 constituting the heated smoking device.

[0017] This problem also occurs when extraction is performed using the heated tobacco extraction tool described in Patent Document 1. With the tool described in Patent Document 1, the helical shaft is rotated while being pushed into the filter section and then extraction is performed, so damage to the filter section formed of a delicate fibrous body is unavoidable.

[0018] As described above, with the heated tobacco extraction tool described in Patent Documents 1 and 2, and embodiment 3 of Patent Document 3, when the tool is pushed into the filter portion remaining in the storage section of the heating device main body that constitutes the heated smoking device, and an engagement is attempted between the tool and the filter portion, it was unavoidable that the filter portion, which is formed from a delicate fibrous material, would be damaged.

[0019] Therefore, when the removal tool is pulled out, the engagement with the damaged filter portion becomes unstable, and removal may not be performed stably.

[0020] On the other hand, in the heated tobacco extraction tool described in the first and second embodiments of Patent Document 3, the filter part is not damaged when the tool is inserted into the cylindrical hollow part formed in the center of the filter part remaining in the housing of the heating device main body constituting the heated smoking tool. However, in order to pierce the inner peripheral wall of the cylindrical hollow part with the tip of the bent part formed at the tip of the rod-shaped part that is inserted into the cylindrical hollow part and that extends by bending at a predetermined angle relative to the rod-shaped part, when the extraction tool is inserted into the cylindrical hollow part with the bent part formed at the tip of the rod-shaped part leading the way, it is necessary to insert the extraction tool at a slight angle to the axial direction in which the cylindrical hollow part extends, and then return the tool to its original orientation parallel to the axial direction for insertion.

[0021] For this reason, there was room for improvement in terms of ease of the pulling-out operation and the stability of the secure engagement between the tool and the filter portion by piercing the tip of the bent portion into the inner wall of the cylindrical hollow portion.

[0022] The object of this invention is to propose a heated tobacco removal tool that, when pulling out a filter section or the like remaining within the storage section of the heating device main body that constitutes a heated smoking device, can stably achieve a reliable engagement between the removal tool and the filter section, thereby enabling stable removal with a simple removal operation. [Means for solving the problem]

[0023] The following are examples of aspects of the present invention that achieve the above-mentioned object. [1] a removal tool body having a hook portion at its tip end that is inserted into a cylindrical hollow portion formed in the center of the filter portion remaining in the housing portion of the heating device body constituting the heated smoking device; a push-in tool that is slidably disposed relative to the extraction tool body in an axial direction that is a direction in which the extraction tool body extends; A heated tobacco extraction tool comprising: The hook portion is made up of a plurality of hook pieces extending in the axial direction, having slits between each of the hook pieces, and each of the hook pieces having a hook claw portion at a tip thereof protruding toward an outer side in the radial direction of the hook portion, a diameter of a virtual circumference formed by connecting outer diameter ends of the plurality of hook claw portions, which are radially outer ends of the hook portions, in a circumferential direction is smaller than an inner diameter of the hollow portion, The pushing tool is provided at its tip with a pushing rod portion which moves from the rear end side to the front end side within the extraction tool body on the radial inside of the extraction tool body, thereby moving each of the outer diameter ends of the plurality of hook claw portions of the hook portion inserted into the hollow portion toward the outer direction in the radial direction of the hook portion and causing the outer diameter ends of the hook claw portions to protrude into the inner wall surface at the lower end side of the hollow portion. Heated tobacco removal tool.

[0024] [2] The heated tobacco extraction tool [1] comprises two of the hanging piece portions facing each other in a direction perpendicular to the axial direction with the slit portion interposed between them.

[0025] [3] The two hanging pieces are deformable so that the tips move in directions away from each other, starting from the rear ends of the respective hanging pieces, when the push rod portion moves from the rear end to the front end within the extraction tool body [2].

[0026] [4] 4. The heated tobacco pulling tool according to claim 3, wherein the two hooking pieces are elastically deformable. Effect of the Invention

[0027] According to this invention, it is possible to provide a heated tobacco removal tool that can stably achieve reliable engagement between the removal tool and the filter part when removing a filter part or the like remaining within the storage section of the heating device main body that constitutes a heated smoking device, and can perform stable removal with a simple removal operation. [Brief description of the drawings]

[0028] [Figure 1] A diagram illustrating the general structure and shape of a cartridge that is inserted into a heated smoking device for use. [Diagram 2] FIG. 2 is a partially omitted conceptual diagram illustrating the cartridge shown in FIG. 1 inserted into the heating device body of a heated smoking device and in use. [Diagram 3] FIG. 3 is a conceptual diagram with some parts omitted to illustrate the state in which a fold occurs between the filter part protruding from the heating device main body and the filter part housed within the housing part of the heating device main body in the state shown in FIG. 2, i.e., a so-called center fold. [Figure 4]FIG. 3 is a partially omitted conceptual diagram illustrating the state in which an inverted trapezoidal section, the outer diameter of which is larger than the inner diameter of the cylindrical hollow section of the filter section, is pushed from above while damaging the filter section in order to remove the heated tobacco using a conventional heated tobacco removal tool in a bent state as shown in FIG. [Diagram 5] FIG. 5 is a partially omitted conceptual diagram illustrating an example of a state in which the heated tobacco removal tool is removed upward following the state shown in FIG. 4 . [Figure 6] 6A and 6B are diagrams illustrating the operation of a heated tobacco extraction tool according to one embodiment of the present invention, in which the push rod portion of the pushing tool moves from the rear end to the tip end within the extraction tool body, radially inside the extraction tool body, causing the outer diameter ends of the multiple hanging claw portions of the hanging portion in the extraction tool body to move radially outwardly from the hanging portion; (a) is a side view with some parts omitted to illustrate the state in which the push rod portion of the pushing tool is positioned at the rear end side within the extraction tool body, and (b) is a side view with some parts omitted to illustrate the state in which the push rod portion has moved from the state shown in FIG. 6A to the tip side within the extraction tool body. [Figure 7] 6(a) is a cross-sectional view of an example of a state corresponding to FIG. 6(a) with a portion omitted, and FIG. 6(b) is a cross-sectional view of an example of a state corresponding to FIG. 6(b) with a portion omitted. [Figure 8] 8(a) and 8(b) are diagrams illustrating an example of an extraction tool body constituting a heated tobacco extraction tool according to one embodiment of the present invention, in which (a) is a side view, (b) is a bottom view, (c) is a diagram illustrating the size of the diameter of a virtual circumference formed by connecting the outer diameter ends of multiple hooking claw portions in the circumferential direction, and (d) is a cross-sectional view of FIG. 8(a). [Figure 9] 1A and 1B are diagrams illustrating an example of a pushing tool constituting a heated tobacco pulling tool according to one embodiment of the present invention, where (a) is a side view and (b) is a cross-sectional view. [Figure 10] FIG. 4 is a cross-sectional view with some parts omitted to illustrate the state in which the hook portion of the extraction tool body is inserted into the cylindrical hollow portion of the filter portion to perform extraction using a heated tobacco extraction tool according to one embodiment of the present invention in a bent state as shown in FIG. [Figure 11] 11 is a partially omitted cross-sectional view illustrating a state in which the push rod portion of the pusher has moved to the tip side within the extraction tool body subsequent to the state shown in FIG. 10. [Figure 12] 12 is a cross-sectional view, with some parts omitted, illustrating the state after removal of the tobacco using a heated tobacco removal tool according to one embodiment of the present invention, following the state shown in FIG. 11 . FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Note that the structure and form of the cartridge 1 shown in Figures 1 to 5, and the structure of the heating device main body 5 constituting the heated smoking device are the same in this embodiment, so their explanation will be omitted.

[0030] The heated tobacco removal tool 10 of this embodiment (Figures 6 and 7) is used when a cartridge 1, which is inserted into a heated smoking device for use, becomes bent in the middle and remains inside the storage compartment of the heating device main body 5 of the heated smoking device, as shown in Figure 3, and is used to pull out the portion of the cartridge 1 that remains inside the storage compartment from the storage compartment.

[0031] The heated tobacco extraction tool 10 of this embodiment (FIGS. 6 and 7) comprises an extraction tool body 11 and a pushing tool 12.

[0032] The removal tool body 11 has a hook portion at its tip side (the lower side in Figures 6 and 7) that is inserted into the cylindrical hollow portion 4 formed in the center of the filter section 2b remaining in the storage section of the heating device body 5 (Figures 3 and 10) that constitutes the heated smoking device.

[0033] In the embodiment shown in Figures 6 and 7, the hanging portion has its base point at the lower end of the rectangular, hollow main body case 11a that constitutes the extraction tool body 11, and is composed of two hanging pieces 13a, 13b that each extend downward (toward the lower side in Figures 6 and 7) from the base point.

[0034] The two hooking pieces 13a, 13b extend in the axial direction, which is the direction in which the extraction tool body 11 extends (the up-down direction in Figs. 6(a) and 7(a)). They are also structured to have a slit portion 16 (Fig. 6(a)) between them. In the illustrated embodiment, the hooking pieces 13a, 13b are structured to face each other in a direction perpendicular to the axial direction, with the slit portion 16 (Figs. 6(a), 8(a), (d)) between them.

[0035] The two hook portions 13a, 13b are provided at their respective tips with hook claw portions 14a, 14b that protrude outward in the radial direction of the hook portion (FIGS. 6, 7, and 8).

[0036] In the embodiment shown in Figures 6 and 7, the diameter R2 (Figure 8(c)) of an imaginary circumference formed by circumferentially connecting the outer diameter ends of the multiple hanging claw portions, which are the radially outer ends of the hanging portions of the hanging claw portions 14a, 14b, is smaller than the inner diameter R1 (Figure 3) of the cylindrical hollow portion 4 of the filter portion 2b remaining in the storage section of the heating device main body 5 that constitutes the heated smoking device.

[0037] When performing extraction using the heated tobacco extraction tool 10 of this embodiment, as shown by arrow 33 in Figure 10, the heated tobacco extraction tool 10 is moved toward the heating device main body 5 so that the hanging portion (hanging piece portions 13a, 13b) in the state shown in Figures 6(a) and 7(a) is inserted into the cylindrical hollow portion 4 of the filter portion 2b remaining in the storage portion of the heating device main body 5 that constitutes the heated smoking device.

[0038] Therefore, it is preferable that the diameter R2 (FIG. 8(c)) of an imaginary circumference formed by connecting the outer diameter ends of the plurality of hook claws 14a, 14b in the circumferential direction is the maximum outer diameter of the hook portion. As described above, the diameter R2 (Figure 8(c)) of the imaginary circumference formed by connecting the outer diameter ends of the multiple hanging claw portions of hanging claw portions 14a, 14b in the circumferential direction is smaller than the inner diameter R1 (Figure 3) of the cylindrical hollow portion 4 of the filter portion 2b remaining in the storage section of the heating device main body 5 that constitutes the heated smoking device. Therefore, even if the hanging portions (hanging piece portions 13a, 13b) in the state shown in Figures 6(a) and 7(a) are inserted into the cylindrical hollow portion 4 of the filter portion 2b as shown in Figure 10 for pulling out, the hanging portions (hanging piece portions 13a, 13b) do not come into contact with the filter portion 2b, i.e., the inner circumferential wall of the hollow portion 4 of the filter portion 2b, and therefore the filter portion 2b is not damaged.

[0039] From this viewpoint, it is desirable that the maximum outer diameter of the above-mentioned hook portion of the removal tool body 11 in the state shown in Figures 6(a), 7(a), and 10 is smaller than the inner diameter R1 (Figure 3) of the cylindrical hollow portion 4 of the filter portion 2b.

[0040] In this regard, it is desirable that the diameter R2 of an imaginary circumference formed by circumferentially connecting the outer diameter ends of the multiple hook claw portions of the hook claw portions 14a, 14b in the state shown in Figures 6(a) and 7(a), which is shown as R2 in Figure 8(c), be the maximum outer diameter of the above-mentioned hook portion provided on the extraction tool body 11 in the state shown in Figures 6(a) and 7(a).

[0041] The pushing tool 12, which together with the extraction tool body 11 constitutes the heated tobacco extraction tool 10 (Figures 6 and 7), is arranged to be freely slidable relative to the extraction tool body 11 in the axial direction, which is the direction in which the extraction tool body 11 extends (the up-down direction in Figures 6 and 7).

[0042] In the embodiment shown in Figures 6 and 7, the pushing tool 12 includes a pushing tool body 12a and a pushing rod portion 15 extending from the tip of the pushing tool body 12a (the right end in Figure 9(a)) toward the tip side (the lower side in Figures 6 and 7, and the left side in Figure 9(a)) (Figure 9(a)). The pushing tool 12 is housed in a hollow portion 19 (Figure 8(d)) of a rectangular hollow main body case 11a constituting the extraction tool body 11, and is slidable within the main body case 11a from the rear end side (the upper side in Figures 6 and 7) toward the tip side (the lower side in Figures 6 and 7) or in the reverse direction.

[0043] In this way, the pushing tool 12 is movable within the extraction tool body 11 from the rear end side (upper side in Figures 6 and 7) to the front end side (lower side in Figures 6 and 7) or in the opposite direction on the radially inner side of the extraction tool body 11 (Figures 6 and 7) (Figures 6 and 7).

[0044] Accordingly, the push rod portion 15 of the pushing tool 12 is movable within the extraction tool body 11 from the rear end side to the front end side, or in the opposite direction, radially inside the above-mentioned hook portion of the extraction tool body 11.

[0045] In the illustrated embodiment, the hollow portion 19 of the rectangular hollow main body case 11a constituting the extraction tool body 11 communicates with the slit portion 16 via the guide hole 18 (FIG. 8(d)). The push rod portion 15 of the pusher 12, which is slidably accommodated in the hollow portion 19 as described above, extends to the slit portion 16 through the guide hole 18 as shown in FIG. 7(a).

[0046] In the illustrated embodiment, the main case 11a has an opening (stop window) 17 for preventing removal, while the pushing tool main body 12a of the pushing tool 12 has a claw (stop claw) 20 for preventing removal at a position corresponding to the position of the opening (stop window) 17 for preventing removal on the main case 11a. The size and distance that the pushing tool 12 can move from the rear end side to the front end side or in the opposite direction within the extraction tool main body 11 is restricted by the size of the opening (stop window) 17 for preventing removal in the vertical direction in FIG. 6.

[0047] As described above, as the push rod portion 15 of the pushing tool 12 moves from the rear end side to the front end side or in the opposite direction within the extraction tool body 11 radially inside the above-mentioned hanging portion of the extraction tool body 11, in the illustrated embodiment, the push rod portion 15 of the pushing tool 12 is able to slide from the rear end side (upper side in Figures 6 and 7) to the front end side (lower side in Figures 6 and 7) or in the opposite direction within the slit portion 16 existing between the hanging pieces 13a, 13b that constitute the hanging portion of the extraction tool body 11.

[0048] In Figures 6(a) and 7(a), the push rod 15 of the pusher 10 is located at the rear end side within the extraction tool body 11. When the push rod 15 moves from the state shown in Figures 6(a) and 7(a) toward the front end side (the lower side in Figures 6 and 7) within the extraction tool body 11, it reaches the state shown in Figures 6(b) and 7(b).

[0049] In other words, when the push rod portion 15 moves from the rear end to the tip end within the extraction tool body 11, the two hooking pieces 13a, 13b are deformable so that the hooking claw portions 14a, 14b formed at the tips of the hooking pieces 13a, 13b move in directions away from each other, using the rear ends of the hooking pieces 13a, 13b as base points (respective base points located at the lower end of the rectangular, hollow main body case 11a that constitutes the extraction tool body 11) as base points, as shown in Figures 6 and 7.

[0050] As an embodiment that allows such deformation, the hook pieces 13a, 13b may be formed from an elastically deformable material.

[0051] As shown in Figure 10, the hanging portion (hanging pieces 13a, 13b) in the state shown in Figures 6(a) and 7(a) is inserted into the cylindrical hollow portion 4 of the filter portion 2b remaining in the storage section of the heating device main body 5 that constitutes the heated smoking device, and then, as shown by arrow 32 in Figure 11, the pushing rod portion 15 of the pushing tool 12 is moved toward the tip side (the lower side in Figures 6 and 7) within the pulling tool main body 11.

[0052] As a result, the outer diameter ends of the hanging claw portions 14a, 14b of the hanging portion inserted into the cylindrical hollow portion 4 of the filter portion 2b remaining in the storage section of the heating device main body 5 that constitutes the heated smoking device each move radially outwardly of the hanging portion (Figures 6(b), 7(b), and 11), and the outer diameter ends of the hanging claw portions 14a, 14b each penetrate into the inner wall surface at the lower end side of the hollow portion 4 (Figure 11).

[0053] That is, when the push rod portion 15 moves in the direction indicated by the arrow 32 (FIG. 11) toward the tip side (the lower side of FIG. 6 and FIG. 7) in the removal tool body 11, the outer diameter ends of the hook claw portions 14a and 14b of the hook portion inserted into the cylindrical hollow portion 4 of the filter portion 2b remaining in the housing portion of the heating device body 5 move toward the outer side in the radial direction of the hook portion (FIG. 6(b), FIG. 7(b), FIG. 11), and the diameter R3 (FIG. 6(b)) of the imaginary circumference formed by connecting the outer diameter ends of the hook claw portions 14a and 14b in the circumferential direction becomes larger than the inner diameter R1 (FIG. 3) of the cylindrical hollow portion 4 of the filter portion 2b remaining in the housing portion of the heating device body 5. Thus, the outer diameter ends of the hook claw portions 14a and 14b each protrude into the inner wall surface at the lower end side of the hollow portion 4 (FIG. 11).

[0054] At this time, the inner wall surface at the lower end side of the cylindrical hollow section 4 of the filter section 2b, which is formed from a delicate fibrous material and remains in the storage section of the heating device main body 5 that constitutes the heated smoking device, is not damaged as shown in Figure 10, as explained using Figures 4 and 5 in the case of the conventional removal tool described above.

[0055] Therefore, the outer diameter ends of the hooking claws 14a, 14b protrude into the lower end side of the cylindrical hollow portion 4 of the undamaged filter portion 2b (Figure 11), thereby achieving a stable and reliable engagement between the heated tobacco extraction tool 10 and the filter portion 2b.

[0056] Furthermore, by simply inserting the hook portion (hook portion 13a, 13b) arranged at the tip side (lower end side) of the extraction tool main body 11 that constitutes the heated tobacco extraction tool 10 into the cylindrical hollow portion 4 of the filter portion 2b remaining in the storage section of the heating device main body 5, as shown in Figure 10, and pushing the push rod portion 15 of the pusher 12 that constitutes the heated tobacco extraction tool 10 toward the tip side (lower end side) as shown in Figures 6 and 7, it is possible to realize a state in which the outer diameter ends of the hook claw portions 14a, 14b each protrude into the inner wall surface at the lower end side of the hollow portion 4 and engage, as shown in Figure 11.

[0057] In this state, the heated tobacco extraction tool 10, in which the outer diameter ends of the hook claw portions 14a, 14b each protrude into the inner wall surface at the lower end side of the hollow portion 4 to engage with it, can be pulled out in the direction shown by arrow 34 in Figure 12, thereby enabling stable extraction.

[0058] In the embodiment described and illustrated above, the hook claw portions 14a, 14b extend in the axial direction, which is the direction in which the extraction tool body 11 extends (the up-down direction in Figures 6(a) and 7(a)), and protrude radially outward from the tips of the hook piece portions 13a, 13b which face each other in a direction perpendicular to the axial direction and constitute a hook portion with a slit portion 16 (Figure 6(a)) interposed therebetween.

[0059] Therefore, the above-mentioned engagement, which is achieved by the outer diameter ends of the hooking claw portions 14a, 14b each protruding into the inner wall surface at the lower end side of the hollow portion 4, is performed at diametrically symmetrical positions of the cylindrical hollow portion 4 of the filter portion 2b remaining in the storage portion of the heating device main body 5, as shown in Figure 11.

[0060] This allows a reliable and stable engagement between the heated tobacco pulling tool 10 and the filter portion 2b. In the embodiment shown in Figures 6 and 7, the slit portion 16 existing between the opposing hook pieces 13a, 13b is large at the rear end side (right side of Figure 8(d)) as shown in Figure 8(d), and the distance between them becomes narrower toward the tip end (left side of Figure 8(d)).

[0061] Where the gap between the hook portions 13a, 13b narrows toward the tip, as shown in Figure 8(d), hook portion 13a, 13b is formed with hook portion side inclined surfaces 17a, 17b that are inclined in the direction narrowing the gap therebetween.

[0062] On the other hand, as shown in FIG. 9(b), the push rod portion 15 also tapers toward the push rod portion tip 15a at the tip side (left side of FIG. 9(b)), and has a large diameter at the rear end side (right side of FIG. 9(b)) corresponding to the size of the slit portion 16 described above.

[0063] The tip side of the push rod portion, which tapers toward the tip 15a, is provided with push rod side inclined surfaces 15b, 15c which are inclined corresponding to the inclination of the hanging piece side inclined surfaces 17a, 17b of the above-mentioned hanging piece portions 13a, 13b.

[0064] In this way, there are hook piece side inclined surfaces 17a, 17b at the tip side of the hook piece portions 13a, 13b that define the slit portion 16, which incline so that the spacing of the slit portion 16 becomes tapered, and on the other hand, the push rod portion 15 that moves from the rear end side to the tip side within the slit portion 16 also has push rod side inclined surfaces 15b, 15c that taper toward the push rod portion tip 15a, and the inclination states of the two correspond to each other.

[0065] This structure is advantageous in that, as the push rod portion 15 moves within the extraction tool body 11 toward the tip side (lower side in Figures 6 and 7), the outer diameter ends of the hanging claw portions 14a, 14b of the hanging portion inserted into the cylindrical hollow portion 4 of the filter portion 2b remaining in the storage section of the heating device body 5 that constitutes the heated smoking device each move smoothly radially outwardly of the hanging portion.

[0066] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made within the technical scope understood from the description of the claims.

[0067] For example, the hook portion that the removal tool body 11 is provided with on the tip side in the axial direction (the vertical direction in Fig. 6(a) and Fig. 7(a)) and is inserted into the cylindrical hollow portion 4 formed in the center of the filter portion 2b remaining in the housing portion of the heating device body 5 that constitutes the heated smoking device, in the above-mentioned embodiment, is composed of hook pieces 13a, 13b that extend in the axial direction and face each other in a direction perpendicular to the axial direction with a slit portion 16 interposed between them. In other words, the cylindrical structure extending in the axial direction is divided into two diametrically symmetrical parts.

[0068] Instead of this configuration, the above-mentioned hanging portion can be configured with three hanging piece portions, four hanging piece portions, etc., in which the cylindrical structure extending in the axial direction is divided into three, four, etc., parts in the circumferential direction at equal circumferential angles.

Claims

1. a removal tool body having a hook portion at its tip end that is inserted into a cylindrical hollow portion formed in the center of the filter portion remaining in the housing portion of the heating device body constituting the heated smoking device; a push-in tool that is slidably disposed relative to the extraction tool body in an axial direction that is a direction in which the extraction tool body extends; A heated tobacco extraction tool comprising: The hook portion is made up of a plurality of hook pieces extending in the axial direction, having slits between each of the hook pieces, and each of the hook pieces having a hook claw portion at a tip thereof protruding toward an outer side in the radial direction of the hook portion, a diameter of a virtual circumference formed by connecting outer diameter ends of the plurality of hook claw portions, which are radially outer ends of the hook portions, in a circumferential direction is smaller than an inner diameter of the hollow portion, The pushing tool is provided at its tip with a pushing rod portion which moves from the rear end side to the front end side within the extraction tool body on the radial inside of the extraction tool body, thereby moving each of the outer diameter ends of the plurality of hook claw portions of the hook portion inserted into the hollow portion toward the outer direction in the radial direction of the hook portion and causing the outer diameter ends of the hook claw portions to protrude into the inner wall surface at the lower end side of the hollow portion. Heated tobacco removal tool.

2. 2. The heated tobacco pulling tool according to claim 1, wherein the plurality of hook portions are two pieces facing each other in a direction perpendicular to the axial direction with the slit portion interposed between them.

3. The heated tobacco extraction tool according to claim 2, wherein the two hanging pieces are deformable such that the tips move in directions away from each other, starting from the rear ends of the respective hanging pieces, when the push rod portion moves from the rear end to the tip end within the extraction tool body.

4. 4. The heated tobacco pulling tool according to claim 3, wherein the two hooking pieces are elastically deformable.

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