Cleaning tools

Abstract

[Problem] To reduce crossing over of a flange of a bobbin by a cleaning element that is wound on the bobbin. [Solution] A cleaning tool according to the present disclosure comprises a cleaning element, a head member that presses the cleaning element against an object to be cleaned, a supply bobbin on which the cleaning element is wound and that supplies the cleaning element to the head member, and a winding bobbin that winds the cleaning element from the supply bobbin via the head member. The winding bobbin comprises a body section on which the cleaning element is wound, and a pair of flanges arranged on both ends of the body section. The body section has a tapered surface that is inclined between the pair of flanges.

Description

[Technical Field]

[0001] The present disclosure relates to cleaning tools. This application claims priority based on Japanese Patent Application No. 2022-091093, filed on June 3, 2022, the contents of which are incorporated herein by reference. [Background technology]

[0002] A cleaning tool for cleaning the connection end face of an optical connector to reduce connection loss between optical connectors is known. Patent Document 1 describes a cleaning tool having a shaft tip (head) that presses a cleaning element against the mating end face of the connector, a supply reel that supplies the cleaning element to the head, and a take-up reel that takes up the cleaning element from the head as the cleaning operation is performed. In other words, the take-up reel retrieves the cleaning element provided on the supply reel via the head after each cleaning operation. A predetermined tension is applied to the cleaning element, and the cleaning element is tightly stretched between the supply reel and the take-up reel. These reels generally have a bobbin shape, consisting of a body that serves as a take-up shaft and a pair of flanges. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-206733 Summary of the Invention [Problem to be solved by the invention]

[0004] Such cleaning tools do not have a mechanism for winding the cleaning body evenly around the bobbin. As a result, the cleaning body wound around the bobbin may become unevenly positioned. If the cleaning body continues to be wound around the bobbin in an uneven position, it may climb over the flange of the bobbin, making it impossible to wind the cleaning body around the body of the bobbin.

[0005] An object of the present invention is to provide a cleaning tool that can reduce the likelihood that a cleaning element wound around a bobbin will climb over the flange of the bobbin. [Means for solving the problem]

[0006] The main invention for achieving the above object is a cleaning tool comprising: a cleaning body; a head member for pressing the cleaning body against an object to be cleaned; a supply bobbin around which the cleaning body is wound and which supplies the cleaning body to the head member; and a take-up bobbin for taking up the cleaning body from the supply bobbin via the head member, wherein the take-up bobbin comprises a body for taking up the cleaning body and a pair of flanges arranged on both ends of the body, and the body has an inclined tapered surface between the pair of flanges.

[0007] Other features of the present invention will become apparent from the following description and drawings. [Effects of the Invention]

[0008] According to the present invention, it is possible to reduce the likelihood that the cleaning element being wound around the bobbin will climb over the flange of the bobbin. [Brief explanation of the drawings]

[0009] [Figure 1] Fig. 1A is a perspective view of a cleaning tool 100 according to a first embodiment. Fig. 1B is a perspective view of the cleaning tool 100 with a case 40A removed. [Figure 2] FIG. 2 is an exploded view of the cleaning tool 100. [Figure 3] FIG. 3 is another exploded view of the cleaning tool 100. [Figure 4] Fig. 4A is an explanatory diagram of the winding mechanism 91. Fig. 4B is an explanatory diagram of the ratchet mechanism 91B. [Figure 5] FIG. 5 is an explanatory diagram of the rotation mechanism 92. [Figure 6] Fig. 6A is an explanatory diagram of the winding bobbin 30 of the first embodiment, and Fig. 6B is an explanatory diagram of the winding bobbin 30 of a comparative example. [Figure 7] FIG. 7 is an explanatory diagram of a comparative example in which the cleaning element 3 is wound around the winding bobbin 30. In FIG. [Figure 8] 8A and 8B are diagrams illustrating the first cause. [Figure 9] 9A and 9B are diagrams illustrating the second cause. [Figure 10] FIG. 10 is an explanatory diagram of the end 3A of the cleaning element 3 fixed to the take-up bobbin 30. As shown in FIG. [Figure 11] FIG. 11 is an explanatory diagram of the second embodiment. [Figure 12] FIG. 12 is an explanatory diagram of the shape of a guide pin 512' in the second embodiment. [Figure 13] 13A and 13B are explanatory diagrams of a method for manufacturing a guide pin 512' according to the second embodiment. [Figure 14] 14A and 14B are explanatory diagrams showing the shape and manufacturing method of a guide pin 512'' of a first modified example. [Figure 15] FIG. 15 is an explanatory diagram of a guide pin according to a second modified example. [Figure 16] FIG. 16 is an explanatory diagram showing the holding member 23 of FIG. 15 removed. DETAILED DESCRIPTION OF THE INVENTION

[0010] The following specification and drawings will explain exemplary embodiments of the present invention.

[0011] ===First Embodiment=== <Configuration> Fig. 1A is a perspective view of the cleaning tool 100 of the first embodiment. Fig. 1B is a perspective view of the cleaning tool 100 with the case 40A removed. Fig. 2 is an exploded view of the cleaning tool 100. Fig. 3 is another exploded view of the cleaning tool 100.

[0012] In the following description, the directions of the embodiment are defined as follows. The direction parallel to the rotation axis 511 (see FIG. 3) of the winding bobbin 30 is referred to as the "vertical direction," the base side of the rotation axis 511 (the side of the bottom surface 510 of the housing 51) is referred to as the "bottom," and the tip side of the rotation axis 511 (the side opposite the bottom surface 510 of the housing 51) is referred to as the "top." The vertical direction corresponds to the direction in which the pair of flanges 32 of the winding bobbin 30 are arranged. The base side of the rotation axis 511 is also referred to as the "base end side," and the side opposite the base of the rotation axis 511 is also referred to as the "tip side." The direction in which the head member 10 (see FIG. 3) and the cleaning target (optical connector, not shown) are moved closer to or further away from each other is referred to as the "front-rear direction," and the side of the cleaning target as viewed from the head member 10 is referred to as the "front," and the opposite side is referred to as the "rear." The direction of relative movement between the tool body 40 and the insertion portion 50 is also referred to as the "front-rear direction." The direction perpendicular to the up-down direction and the front-to-back direction is defined as the "left-right direction," the right side when looking at the front from behind is defined as the "right," and the opposite side is defined as the "left."

[0013] The cleaning tool 100 is a tool for cleaning a cleaning target. The cleaning target is, for example, an optical connector, specifically the connection end face of a ferrule of the optical connector. The cleaning tool 100 includes a tool body 40, an insertion section 50 extending from the tool body 40, a head member 10 inserted into the insertion section 50, a cleaning element 3 wound around the head member 10, a supply bobbin 20 around which an unused cleaning element 3 is wound, and a take-up bobbin 30 around which the used cleaning element 3 is taken up. Here, the minimum components required to solve the problem in the cleaning tool 100 of this embodiment are the cleaning element 3, the head member 10, the supply bobbin 20, and the take-up bobbin 30.

[0014] The cleaning element 3 is a long member that cleans the cleaning target. Here, the cleaning element 3 is a string-like (thread-like) member, but it may also be a tape-like (strip-like) member. However, when the cleaning element 3 is string-like, it is more likely that the cleaning element 3 will continue to be wound around the take-up bobbin 30 in an offset position (see FIG. 7, which will be described later) than when the cleaning element 3 is tape-like. Therefore, the cleaning tool 100 of this embodiment is particularly effective when the cleaning element 3 is string-like.

[0015] The head member 10 is a member that presses the cleaning element 3 against the object to be cleaned. The head member 10 is biased forward by a head spring 15. The front end of the head member 10 is a head portion 11 that serves as a pressing surface that presses the cleaning element 3 against the object to be cleaned. The cleaning element 3 is suspended across the head portion 11 (pressing surface). The head member 10 rotates around an axis in the front-to-rear direction as it is pressed against the object to be cleaned. The rotation of the head member 10 can improve cleaning performance. However, the head member 10 does not have to rotate.

[0016] The bobbins constituting the supply bobbin 20 and the take-up bobbin 30 are components around which the cleaning element 3 is wound, and are also referred to as reels, spools, winding frames, etc. The bobbins constituting the supply bobbin 20 and the take-up bobbin 30 have a body and a pair of flanges. The cleaning element 3 is wound around the body. Here, the body is configured in a hollow cylindrical shape so that the rotating shaft 511 (see FIG. 3) can be inserted therethrough. The flanges are configured in a brim shape and are located at both ends of the body.

[0017] The supply bobbin 20 is a bobbin that supplies the cleaning element 3 to the head member 10. An unused cleaning element 3 is wound on the supply bobbin 20 in advance. When the cleaning element 3 is pulled out from the supply bobbin 20, the supply bobbin 20 rotates on the rotation shaft 511.

[0018] The take-up bobbin 30 is a bobbin that takes up the used cleaning element 3. The take-up bobbin 30 is also called a recovery bobbin. The take-up bobbin 30 rotates on a rotation shaft 511. As the take-up bobbin 30 rotates, the cleaning element 3 is taken up around the body of the take-up bobbin 30 (the cleaning element 3 is recovered). The shape of the take-up bobbin 30 will be described later.

[0019] The tool body 40 and the insertion part 50 move relative to each other in the front-to-rear direction as the head member 10 is pressed against the cleaning target. The relative movement between the tool body 40 and the insertion part 50 also rotates the take-up bobbin 30. The relative movement between the tool body 40 and the insertion part 50 also rotates the head member 10. This point will be explained below.

[0020] The tool body 40 constitutes the main body of the cleaning tool 100. An operator cleans the optical connector (the object to be cleaned) by pressing the head member 10 against the object to be cleaned while holding the tool body 40. The tool body 40 has a case 40A and a support body 41.

[0021] The case 40A is a member that constitutes the exterior of the tool body 40. The case 40A accommodates the support body 41, the bobbins (the supply bobbin 20 and the take-up bobbin 30) around which the cleaning body 3 is wound, and the like. Part of the insertion part 50 (such as the accommodation body 51) and the coil spring 55 are also accommodated in the case 40A.

[0022] Support body 41 is a member that supports the end (rear end) of coil spring 55. Support body 41 is housed in case 40A while being fixed to case 40A. Support body 41 has support portion 42, rack 43, and protrusion 44. Support portion 42 supports the end of coil spring 55. Rack 43 is a spur gear, and constitutes winding mechanism 91 (described later; see FIG. 4A). Protrusion 44 is configured in a protruding shape so as to fit into cam groove portion 62A, and constitutes rotation mechanism 92 (described later; see FIG. 5).

[0023] The insertion part 50 is movable in the front-rear direction relative to the tool body 40. The front part of the insertion part 50 extends forward from the tool body 40. A head member 10 is disposed in front of the insertion part 50. The insertion part 50 has the head member 10, as well as a housing 51, a rotating shaft 60, and a cylindrical body 70.

[0024] The housing 51 is provided at the rear of the insertion portion 50. As the insertion portion 50 moves relative to the tool body 40, the housing 51 moves relative to the support body 41. The housing 51 has a first housing portion 51A, a second housing portion 51B, and a spring holding portion 52.

[0025] The first storage section 51A stores the supply bobbin 20 and the take-up bobbin 30. The first storage section 51A has a rotating shaft 511 and a guide pin 512. The rotating shaft 511 is configured in an axial shape (rod-like, cylindrical, or pin-like) and serves as the rotation center of the bobbin. The guide pin 512 is configured in a pin shape to guide the cleaning element 3. The guide pin 512 is configured along the same direction as the axis of the rotating shaft 511. The rotating shaft 511 and the guide pin 512 protrude upward from the bottom surface (base end) of the first storage section 51A. The shape of the guide pin 512 will be described later. The guide pin 512 may be provided on a member separate from the first storage section 51A in which the rotating shaft 511 is provided (described later).

[0026] The second housing portion 51B rotatably houses the rotary cylinder portion 62 of the rotary shaft 60. The second housing portion 51B is disposed closer to the head member 10 (front side) than the first housing portion 51A.

[0027] The spring holding portion 52 holds an end of the coil spring 55. The coil spring 55 is a member that biases the housing 51 forward (toward the object to be cleaned) relative to the support 41. During cleaning, the insertion portion 50 moves backward relative to the tool body 40 (the housing 51 moves backward relative to the support 41), but after cleaning, the force of the coil spring 55 moves the insertion portion 50 forward relative to the tool body 40, allowing the cleaning tool 100 to return to its initial state.

[0028] The rotating shaft 60 is a member (rotating member) that rotates the head member 10 (see FIG. 3). The rotating shaft 60 holds the head member 10 in a state where rotation about an axis in the front-rear direction is restricted. The rotating shaft 60 rotates about an axis in the front-rear direction. The head member 10 rotates in conjunction with the rotation of the rotating shaft 60. The rotating shaft 60 has two insertion holes (see FIG. 8A; a first insertion hole 621 and a second insertion hole 622) along the front-rear direction. An unused cleaning element 3 to be supplied to the head member 10 is inserted into one of the insertion holes (the first insertion hole 621). A used cleaning element 3 to be transported from the head member 10 to the take-up bobbin 30 is inserted into the other insertion hole (the second insertion hole 622). As shown in FIG. 3, the rotating shaft 60 has a shaft portion 61 and a rotating cylinder portion 62. The shaft portion 61 transmits rotational force to the head member 10. The shaft portion 61 is configured in a rod shape (cylindrical shape) so as to form the front portion of the rotating shaft 60. As shown in FIG. 3, the shaft portion 61 holds the head member 10 at its front end. The cleaning body 3 is transported in the front-to-rear direction via the shaft portion 61. The rotating cylinder portion 62 is configured in a cylindrical shape so as to form part of the rotating shaft 60, and is arranged rearward of the shaft portion 61. As shown in FIG. 2, the rotating cylinder portion 62 is housed in the second housing portion 51B of the housing body 51. A cam groove portion 62A is provided on the outer peripheral surface of the rotating cylinder portion 62. The cam groove portion 62A is a spiral groove portion and forms a rotation mechanism 92 (described below; see FIG. 5).

[0029] The tubular body 70 is provided at the front of the insertion section 50. The tubular body 70 has a base tubular section 71, an abutment section 72, a tip tubular section 73, and a tubular section spring 75. The base tubular section 71 and the abutment section 72 are fixed to the housing 51. The tip tubular section 73 is slidable in the front-rear direction relative to the base tubular section 71 and the abutment section 72. The tip tubular section 73 is held in a state where it is biased forward by the tubular section spring 75 and can be moved backward relative to the housing 51. The tubular section spring 75 is disposed between the housing 51 and the tip tubular section 73. During cleaning, the worker holds the tool body 40 and presses the head member 10 of the insertion portion 50 of the cleaning tool 100 against the object to be cleaned (a ferrule of an optical connector). Then, with the head member 10 abutting against the object to be cleaned, the worker further presses the head member 10 against the object to be cleaned. At this time, the tip tube portion 73 retracts relative to the base tube portion 71, and the rear end of the tip tube portion 73 abuts against the abutment portion 72. When the worker further presses the head member 10 against the object to be cleaned after the tip tube portion 73 abuts against the abutment portion 72, the container 51 retracts relative to the tool body 40 (the tool body 40 and the insertion portion 50 move relative to each other in the front-to-rear direction). This relative movement between the tool body 40 and the insertion portion 50 rotates the take-up bobbin 30 and the head member 10.

[0030] Fig. 4A is an explanatory diagram of the winding mechanism 91. Fig. 4B is an explanatory diagram of the ratchet mechanism 91B. In Fig. 4B, for the sake of explanation, the winding bobbin 30 and the gear member 80 are shown separated from each other.

[0031] The cleaning tool 100 includes a winding mechanism 91. The winding mechanism 91 rotates the winding bobbin 30 by relative movement between the tool body 40 and the insertion part 50. The winding mechanism 91 includes the rack 43 of the support body 41, a gear member 80, and a bobbin-side ratchet gear 32A (see FIG. 4B ) of the winding bobbin 30. In other words, the winding mechanism 91 includes a rack-and-pinion mechanism 91A and a ratchet mechanism 91B. Note that the winding mechanism 91 is not limited to a mechanism including the rack-and-pinion mechanism 91A and the ratchet mechanism 91B, and may be any mechanism that rotates the winding bobbin 30 by relative movement between the tool body 40 and the insertion part 50.

[0032] The rack and pinion mechanism 91A has a rack 43 (spur gear) and a pinion 81. The rack 43 is provided on the support 41 so that its teeth are aligned in the front-to-rear direction (see dotted lines in FIGS. 2 and 3). The pinion 81 is a cylindrical small gear and is provided on a gear member 80.

[0033] The gear member 80 transmits power between the rack 43 and the winding bobbin 30. The gear member 80 is disposed above the winding bobbin 30, is disposed coaxially with the winding bobbin 30, and is housed together with the winding bobbin 30 in the first housing portion 51A. The gear member 80 has a pinion 81 and a gear-side ratchet gear 82. The gear member 80 rotates (oscillates) in both directions about the rotation shaft 511 due to the relative movement (linear movement) between the insertion portion 50 and the tool body 40.

[0034] The ratchet mechanism 91B limits the rotation direction to one direction. Here, the rotation direction in which the take-up bobbin 30 can take up the cleaning element 3 is called the winding direction. If the take-up bobbin 30 rotates in the direction opposite to the winding direction, the cleaning element 3 will be fed in the opposite direction, causing the cleaning element 3 to lose tension on the head member 10 and preventing proper cleaning, so it is necessary to limit the rotation direction of the take-up bobbin 30 to one direction (the winding direction). The ratchet mechanism 91B has a gear-side ratchet gear 82 and a bobbin-side ratchet gear 32A.

[0035] When the gear member 80 rotates in the direction opposite to the winding direction, the gear-side ratchet gear 82 and the bobbin-side ratchet gear 32A rotate freely, and the winding bobbin 30 does not rotate. On the other hand, when the gear member 80 rotates in the winding direction, the gear-side ratchet gear 82 and the bobbin-side ratchet gear 32A mesh together, and the rotation of the gear member 80 is transmitted to the winding bobbin 30, causing the winding bobbin 30 to rotate about the rotation shaft 511. In this way, the winding mechanism 91 rotates the winding bobbin 30 by the relative movement between the tool body 40 and the insertion portion 50.

[0036] FIG. 5 is an explanatory diagram of the rotation mechanism 92.

[0037] The cleaning tool 100 includes a rotation mechanism 92. The rotation mechanism 92 rotates the head member 10 around an axis in the front-to-rear direction by relative movement between the insertion portion 50 and the tool body 40. The rotation mechanism 92 is configured with a cylindrical cam mechanism and includes a convex portion 44 of the support body 41 and a cam groove portion 62A of the rotating cylinder portion 62 of the rotating shaft 60. However, the rotation mechanism 92 is not limited to a cylindrical cam mechanism. The convex portion 44 and the cam groove portion 62A are engaged with each other, and relative movement between the tool body 40 and the insertion portion 50 in the front-to-rear direction causes the rotating cylinder portion 62 to rotate around an axis in the front-to-rear direction. As a result, when the tool body 40 and the insertion portion 50 move relative to each other (linear movement), the head member 10 rotates together with the rotating shaft 60 around an axis in the front-to-rear direction.

[0038] The take-up bobbin 30 may rotate in the winding direction without using the relative movement between the tool body 40 and the insertion part 50. Also, the head member 10 may rotate without using the relative movement between the tool body 40 and the insertion part 50. Also, the head member 10 does not have to rotate during cleaning.

[0039] <About the winding bobbin 30> Fig. 6A is an explanatory diagram of the winding bobbin 30 of the first embodiment, and Fig. 6B is an explanatory diagram of the winding bobbin 30 of a comparative example. 6A and 6B, the take-up bobbin 30 has a pair of flanges 32, but the body 311 in FIG. 6B has a different shape from the body 31 in FIG. 6A. The body 31 (311) is configured along the axial direction of the rotation shaft 511 and winds up the cleaning element 3. The body 31 is configured in a cylindrical shape, and the rotation shaft 511 (see FIG. 3) is inserted into the body 31. The flanges 32 are arranged on both ends of the body 31 (311). The flanges 32 prevent the cleaning element 3 from coming off the body 31 (311). The body 311 of the take-up bobbin 30 in FIG. 6B is configured in a cylindrical shape and has a constant diameter.

[0040] 7 is an explanatory diagram of the cleaning element 3 being wound around the take-up bobbin 30 of FIG. 6B. As shown in the figure, the cleaning element 3 wound around the take-up bobbin 30 may be positioned unevenly. The following two reasons may be considered as reasons why the cleaning element 3 wound around the take-up bobbin 30 may be positioned unevenly.

[0041] 8A and 8B are diagrams illustrating the first cause. When the take-up bobbin 30 rotates in the winding direction, the container 51 is retracted relative to the support 41, and therefore the rotating shaft 60 rotates around an axis in the front-to-rear direction. Here, as shown in FIG. 8A , when the take-up bobbin 30 rotates in the winding direction, the rotating shaft 60 rotates counterclockwise. Also, as shown in FIG. 8A , the rotating shaft 60 has two insertion holes (a first insertion hole 621 and a second insertion hole 622), and the used cleaning element 3 is inserted through the second insertion hole 622 on the right side of FIG. 8A . Since the second insertion hole 622 is disposed eccentrically with respect to the rotation axis of the rotating shaft 60, when the take-up bobbin 30 rotates in the winding direction, the rotating shaft 60 rotates counterclockwise as shown in FIG. 8A , and thus the used cleaning element 3 is displaced upward. As a result, the cleaning element 3 is wound unevenly onto the upper side of the take-up bobbin 30, as shown in FIG. 7 .

[0042] 9A and 9B are diagrams illustrating the second cause. A guide pin 512 is arranged in the transport path of the cleaning body 3 between the rotating shaft 60 and the take-up bobbin 30. As already explained, the guide pin 512 protrudes upward from the bottom surface of the housing body 51 (first housing section 51A). The housing body 51 is an injection-molded product made of resin, and as shown in FIG. 9A, the housing body 51 having the guide pin 512 is molded using a mold 7. To ensure smooth release of the molded housing body 51 (guide pin 512), the mold 7 is provided with a slope (taper; draft gradient). For this reason, as shown in FIG. 9B, the guide pin 512 is formed with a tapered surface (inclined surface) whose diameter gradually decreases from the base side (lower side; base end side) to the tip side (upper side). For example, the tapered surface of the guide pin 512 is inclined by about 1 degree in the vertical direction. As a result, when the cleaning body 3 is guided by the guide pin 512, the cleaning body 3 is guided upward by the tapered surface of the guide pin 512, and as shown in Figure 7, the cleaning body 3 is wound unevenly onto the upper side of the winding bobbin 30.

[0043] 7, if the cleaning element 3 continues to be wound at an offset position on the upper side of the take-up bobbin 30, the cleaning element 3 may climb over the upper flange 32, making it impossible to wind the cleaning element around the body 31 of the take-up bobbin 30. Although two causes for the cleaning element 3 being wound at an offset position on the take-up bobbin 30 have been given above, even if there is another cause, if the cleaning element 3 continues to be wound at an offset position on the take-up bobbin 30, the cleaning element 3 may climb over the flange 32, making it impossible to wind the cleaning element around the body 31 of the take-up bobbin 30.

[0044] 6A, the trunk 31 of the take-up bobbin 30 has a tapered surface (inclined surface) that is inclined between the pair of flanges 32. Here, the trunk 31 has a tapered surface such that the diameter of the trunk 31 gradually decreases from the upper side to the lower side (from the tip side to the base side of the rotation shaft 511). The side of the trunk 31 with a larger diameter is sometimes referred to as the "large diameter side," and the side of the trunk 31 with a smaller diameter is sometimes referred to as the "small diameter side." Here, the large diameter side is the upper side (the flange 32 side having the ratchet gear 32A), and the small diameter side is the lower side (the side opposite the upper side, the flange 32 side not having the ratchet gear 32A). Because the trunk 31 has a tapered surface, when the take-up bobbin 30 rotates in the winding direction and the cleaning element 3 is wound onto the trunk 31, the cleaning element 3 is guided downward by the tapered surface of the trunk 31. This prevents the cleaning element 3 from being wound up at an uneven position on the upper side of the take-up bobbin 30 (see FIG. 7), and reduces the cleaning element 3 from climbing over the flange.

[0045] As already explained, when the take-up bobbin 30 rotates in the take-up direction, the used cleaning element 3 is displaced upward by the rotation of the head member 10 (see FIGS. 8A and 8B). Meanwhile, as shown in FIG. 6A, the small diameter side of the body 31 of the take-up bobbin 30 is disposed at the bottom and the large diameter side is disposed at the top, so when the used cleaning element 3 is taken up onto the body 31, the cleaning element 3 is guided downward by the tapered surface of the body 31. In other words, the cleaning element 3, which is displaced in one direction in the vertical direction (upward in this case) by the rotation of the head member 10, is guided to the opposite side (downward in this case) by the tapered surface of the body 31 of the take-up bobbin 30, so that the cleaning element 3 can be prevented from being taken up at an uneven position on the take-up bobbin 30 by the rotation of the head member 10. Therefore, when the cleaning body 3 is displaced in a predetermined direction (here, upward) relative to the winding bobbin 30 due to rotation of the head member 10, it is desirable that the tapered surface of the body 31 becomes thicker toward this predetermined direction (here, upward).

[0046] 8A, the first insertion hole 621 and the second insertion hole 622 are arranged to sandwich the rotation axis of the rotary shaft 60, and therefore the second insertion hole 622 is arranged at a position eccentric to the rotation axis of the rotary shaft 60. In such a case, the used cleaning element 3 is displaced upward as the rotary shaft 60 rotates together with the head member 10. In other words, when the first insertion hole 621 and the second insertion hole 622 are arranged to sandwich the rotation axis of the rotary shaft 60, it is particularly effective for the body portion 31 of the winding bobbin 30 to have a tapered surface.

[0047] 9B, the guide pin 512 has a tapered surface that is inclined in the vertical direction (the direction in which the pair of flanges 32 are arranged). The tapered surface of the guide pin 512 becomes thinner toward the top, while the tapered surface of the body 31 becomes thinner toward the bottom, so as to be inclined in the opposite direction to the tapered surface of the guide pin 512. Therefore, the cleaning element 3 guided upward by the tapered surface of the guide pin 512 is guided downward by the tapered surface of the body 31, and therefore the tapered surface of the guide pin 512 can prevent the cleaning element 3 from being wound at an uneven position on the take-up bobbin 30. In this way, when the guide pin 512 has a tapered surface, it is particularly effective for the body 31 of the take-up bobbin 30 to have a tapered surface.

[0048] In the first embodiment, the inclination angle of the tapered surface of the body 31 is equal to or greater than the inclination angle of the tapered surface of the guide pin 512. The inclination angle of the tapered surface is the angle between the direction of the central axis of the tapered surface (the vertical direction; the direction in which the pair of flanges 32 are arranged) and the generatrix of the tapered surface. Here, the inclination angle of the tapered surface of the guide pin 512 is 1 degree, while the inclination angle of the tapered surface of the body 31 is 3.5 degrees. However, the inclination angle of the guide pin 512 is not limited to 1 degree, and the inclination angle of the tapered surface of the body 31 is not limited to 3.5 degrees.

[0049] The inclination angle of the tapered surface of the body 31 may be equal to the inclination angle of the tapered surface of the guide pin 512. Specifically, when the inclination angle of the tapered surface of the guide pin 512 is 1 degree, the inclination angle of the tapered surface of the body 31 may also be 1 degree. By making the inclination angle of the tapered surface of the body 31 equal to the inclination angle of the tapered surface of the guide pin 512, it is possible to cancel out the displacement of the cleaning element 3 guided upward by the tapered surface of the guide pin 512 and the displacement of the cleaning element 3 guided downward by the tapered surface of the body 31. For example, if the tapered surface of the guide pin 512 is the main cause of the head member 10 not rotating and the cleaning element 3 being wound at an offset position on the take-up bobbin 30, it is desirable that the inclination angle of the tapered surface of the body 31 be equal to the inclination angle of the tapered surface of the guide pin 512. However, when the cleaning body 3 is guided upward not only by the tapered surface of the guide pin 512 but also by the rotation of the head member 10, it is desirable that the inclination angle of the tapered surface of the body 31 be greater than the inclination angle of the tapered surface of the guide pin 512.

[0050] FIG. 10 is an explanatory diagram of the end 3A of the cleaning element 3 fixed to the take-up bobbin 30. As shown in FIG.

[0051] An end 3A (the end on the winding start side) of the cleaning element 3 is fixed to the small diameter side of the trunk 31 of the winding bobbin 30. Here, the tapered surface of the winding bobbin 30 becomes thinner toward the bottom, and the end 3A of the cleaning element 3 is fixed with an adhesive to the corner between the flange 32 on the lower side (small diameter side) of the winding bobbin 30 and the trunk 31. By fixing the end 3A of the cleaning element 3 to the small diameter side of the trunk 31 in this way, the cleaning element 3 starts to be wound from the small diameter side (lower side) of the trunk 31, and therefore the cleaning element 3 can be prevented from being wound at an uneven position on the upper side of the winding bobbin 30 (see FIG. 7).

[0052] Incidentally, the cleaning body 3 wound around the supply bobbin 20 in advance will eventually be wound around the take-up bobbin 30. For this reason, it is necessary to configure the body 31 of the take-up bobbin 30 so that the capacity of the take-up bobbin 30 (the length of the cleaning body 3 that can be wound) is approximately the same as the capacity of the supply bobbin 20. If the diameter of the small diameter side of the take-up bobbin 30 were approximately the same as the diameter of the body of the supply bobbin 20, the diameter of the large diameter side of the take-up bobbin 30 would be larger than the diameter of the body of the supply bobbin 20, resulting in a structure in which the capacity of the take-up bobbin 30 is likely to be smaller than the capacity of the supply bobbin 20 (as a result, when the cleaning body 3 wound around the supply bobbin 20 in advance continues to be wound around the take-up bobbin 30, the cleaning body 3 would easily climb over the flange 32 on the large diameter side of the take-up bobbin 30). For this reason, it is desirable that the diameter of the small diameter side of the take-up bobbin 30 is smaller than the diameter of the body of the supply bobbin 20. This makes it possible to reduce the diameter of the large diameter side of the body 31, and to lengthen the cleaning element 3 that can be wound around the take-up bobbin 30 (i.e., to increase the capacity of the take-up bobbin 30), thereby increasing the number of times the cleaning tool 100 can be used.

[0053] As shown in FIG. 6A , one of the pair of flanges 32 is provided with a winding mechanism 91 (here, a bobbin-side ratchet gear 32A) that rotates the winding bobbin 30. If the winding mechanism 91 were provided on the flange 32 on the smaller diameter side, the joint between the flange 32 and the barrel 31 would be easily damaged by torque when the winding bobbin 30 receives force from the winding mechanism 91. For this reason, in the first embodiment, the winding mechanism 91 (here, the bobbin-side ratchet gear 32A) is provided on the flange 32 on the larger diameter side. This increases the strength of the joint between the flange 32 on which the winding mechanism 91 is provided and the barrel 31, thereby increasing the strength of the winding bobbin 30 against torque when it receives force from the winding mechanism 91. Note that, as described above, providing the winding mechanism 91 on the flange 32 on the larger diameter side is particularly effective when the diameter of the smaller diameter side of the winding bobbin 30 is smaller than the diameter of the barrel of the supply bobbin 20.

[0054] === Second Embodiment === Next, a cleaning tool of a second embodiment will be described. The cleaning tool of the second embodiment is different from the cleaning tool 100 of the first embodiment in the shape of the guide pin 512. The components other than the guide pin (and its surrounding components) have the same configuration as those of the first embodiment, so a description thereof will be omitted here.

[0055] FIG. 11 is an explanatory diagram of the second embodiment.

[0056] The guide pin 512' protrudes upward from the bottom surface 510 of the first storage section 51A, from which the rotating shaft 511 (not shown in FIG. 11; see FIG. 3) of the winding bobbin 30 protrudes. The guide pin 512' is arranged on the transport path of the cleaning element 3 between the rotating shaft 60 and the winding bobbin 30, and guides the cleaning element 3. The side surface of the guide pin 512' comes into contact with the cleaning element 3 to guide the cleaning element 3. In the following description, the side surface of the guide pin 512' that comes into contact with the cleaning element 3 is referred to as the "contact surface 512A," and the surface that does not come into contact with the cleaning element 3 (surface other than the contact surface 512A) is referred to as the "non-contact surface 512B."

[0057] FIG. 12 is an explanatory diagram of the shape of a guide pin 512' in the second embodiment.

[0058] The contact surface 512A of the guide pin 512' in the second embodiment is configured as an inclined surface that is inclined in a direction that guides the cleaning element 3 toward the bottom surface 510. That is, the contact surface 512A is inclined in the opposite direction to the contact surface (tapered surface) of the guide pin 512 shown in FIG. 9B, and is inclined inward toward the bottom surface 510. The contact surface 512A is inclined so that the angle with the bottom surface 510 is less than 90 degrees. When the cleaning element 3 under tension comes into contact with the contact surface 512A configured as such an inclined surface, the cleaning element 3 receives a force from the contact surface 512A in a direction toward the bottom surface 510, and as a result, the cleaning element 3 is guided toward the bottom surface 510 by the contact surface 512A.

[0059] According to the second embodiment, when the take-up bobbin 30 rotates in the take-up direction and the cleaning element 3 is taken up onto the body 31, the cleaning element 3 is guided downward (towards the bottom surface 510) by the contact surface 512A of the guide pin 512'. This prevents the cleaning element 3 from being taken up at an uneven position on the upper side of the take-up bobbin 30 (see FIG. 7), and reduces the cleaning element 3 from climbing over the flange 32.

[0060] The flange 32 on the lower side (the side of the bottom surface 510) of the take-up bobbin 30 is supported by the bottom surface 510 of the first storage section 51A, and is therefore structured so that its outer surface is covered by the bottom surface 510. In contrast, the flange 32 on the upper side (the side opposite the bottom surface 510) of the take-up bobbin 30 is not covered on the outer side and is structured so that it is open. Due to this structure, there is little risk that the cleaning element 3 will climb over the flange 32 on the lower side (the side of the bottom surface 510) of the take-up bobbin 30, but there is a high risk that the cleaning element 3 will climb over the flange 32 on the upper side (the side opposite the bottom surface 510) of the take-up bobbin 30. For this reason, it is effective to guide the cleaning element 3 toward the bottom surface 510 by the contact surface 512A.

[0061] Furthermore, since the flange 32 on the lower side (the side of the bottom surface 510) of the take-up bobbin 30 is covered by the bottom surface 510, the winding mechanism 91 (here, the bobbin-side ratchet gear 32A) that rotates the take-up bobbin 30 is provided on the flange 32 on the upper side (the side opposite the bottom surface 510) (see FIG. 6A). Due to this structure, if the cleaning element 3 climbs over the flange 32 on the upper side (the side opposite the bottom surface 510) of the take-up bobbin 30, the cleaning element 3 may become entangled in the winding mechanism 91. For this reason, when the winding mechanism 91 is provided on the flange 32 on the side opposite the bottom surface 510, it is particularly effective to guide the cleaning element 3 toward the bottom surface 510 by the contact surface 512A.

[0062] Incidentally, contact surface 512A of guide pin 512' is inclined in the opposite direction to the tapered surface of guide pin 512 shown in Fig. 9B. For this reason, it is considered difficult to form contact surface 512A using the manufacturing method shown in Fig. 9B. Therefore, a method for manufacturing guide pin 512' of the second embodiment will be described.

[0063] 13A and 13B are explanatory views of a manufacturing method for a guide pin 512' of the second embodiment. The contact surface 512A of the guide pin 512' of the second embodiment is formed by a protruding portion 7A protruding from a lower mold 7 (a mold that is pulled downward relative to the guide pin). This makes it possible to form a contact surface 512A that is inclined on the side opposite to the tapered surface of the guide pin 512 shown in FIG. 9B. That is, it is possible to form a contact surface 512A that is inclined in a direction that guides the cleaning element 3 toward the bottom surface 510 (a contact surface 512A that is inclined inward as it approaches the bottom surface 510).

[0064] 13B, when guide pin 512' is molded, hole 510A for pulling out protrusion 7A (a mold for molding contact surface 512A) is formed in bottom surface 510 at the base of contact surface 512A. In other words, by providing hole 510A in bottom surface 510 at the base of contact surface 512A, it becomes possible to pull out protrusion 7A downward as shown in FIGS. 13A and 13B, and it becomes possible to mold contact surface 512A.

[0065] In the case where guide pin 512' is structured to protrude from bottom surface 510, in order to form an inclined surface like contact surface 512A (a surface that slopes inward toward the bottom surface), hole 510A needs to be formed at the base. For this reason, in the case where guide pin 512' is structured to protrude from bottom surface 510, it is difficult to form an inclined surface like contact surface 512A (a surface that slopes inward toward the bottom surface) on the entire circumferential surface of the side surface of guide pin 512'. Therefore, in the case where guide pin 512' is structured to protrude from bottom surface 510, it is desirable that the side surface of guide pin 512' other than contact surface 512A (non-contact surface 512B) be formed with an inclined surface that slopes in the same direction as the tapered surface of guide pin 512 shown in FIG. 9B. That is, in the case where guide pin 512' is structured to protrude from bottom surface 510, even if contact surface 512A is configured as an inclined surface that slopes inward toward the bottom surface, it is desirable that the side surface of guide pin 512' other than contact surface 512A (non-contact surface 512B) is configured as an inclined surface that slopes outward toward bottom surface 510 (an inclined surface that slopes in the opposite direction to contact surface 512A). However, as will be described later, in the case where guide pin is not structured to protrude from bottom surface 510 but is provided in a member separate from first housing portion 51A, it is possible to form an inclined surface that slopes inward toward the bottom surface on the entire circumferential surface of the side surface of the guide pin.

[0066] 14A and 14B are explanatory diagrams showing the shape and manufacturing method of a guide pin 512'' of a first modified example.

[0067] Contact surface 512A of guide pin 512" of the first modified example is a surface parallel to rotation shaft 511 of take-up bobbin 30 (a surface parallel to the vertical direction) and is not inclined. That is, in the first modified example, contact surface 512A is a surface parallel to rotation shaft 511 of take-up bobbin 30, and non-contact surface 512B is an inclined surface that slopes outward toward the bottom surface (an inclined surface inclined in the same direction as the tapered surface of guide pin 512 shown in FIG. 9B). Contact surface 512A of the first modified example forms an angle of 90 degrees with bottom surface 510. Since contact surface 512A of guide pin 512" of the first modified example is not inclined, it does not guide cleaning element 3 toward bottom surface 510. However, compared to the guide pin 512 shown in FIG. 9B, the guide pin 512″ of the first modified example can prevent the cleaning element 3 from being guided upward. In other words, even if the contact surface 512A is a surface parallel to the rotation axis 511 of the winding bobbin 30, as in the guide pin 512″ of the first modified example, the cleaning element 3 can be prevented from being guided upward, and the cleaning element 3 can be prevented from climbing over the flange 32.

[0068] Furthermore, in the case of guide pin 512" of the first modified example, contact surface 512A can be molded using upper mold 7 (a mold that is pulled upward relative to the guide pin), and there is no need to provide protrusion 7A (see Figures 13A and 13B) on lower mold 7. For this reason, when contact surface 512A is a surface parallel to rotation axis 511 of winding bobbin 30, as in guide pin 512" of the first modified example, there is an advantage that guide pin 512" is easier to manufacture. When contact surface 512A is a surface parallel to rotation axis 511 of winding bobbin 30, as in guide pin 512" of the first modified example, there is also an advantage that there is no need to form hole 510A in bottom surface 510 of first accommodating section 51A.

[0069] When contact surface 512A is a surface parallel to rotation axis 511 of winding bobbin 30 as in the first modified example, it is desirable that the proportion of contact surface 512A in the circumferential direction of the side surface of guide pin 512" that is occupied by contact surface 512A is equal to or less than half. This makes it possible to form the side surface of guide pin 512", including contact surface 512A, using upper mold 7 while pulling upper mold 7 upward relative to the guide pin, as shown in Figures 14A and 14B.

[0070] Fig. 15 is an explanatory view of a guide pin of the second modified example, and Fig. 16 is an explanatory view of Fig. 15 with the holding member 23 removed.

[0071] A holding member 23 is provided between the supply bobbin 20 and the take-up bobbin 30. The holding member 23 maintains the distance between the rotation shaft 511 of the supply bobbin 20 and the rotation shaft 511 of the take-up bobbin 30, and prevents the rotation shaft 511 of the supply bobbin 20 and the rotation shaft 511 of the take-up bobbin 30 from being deformed and tipping over. The holding member 23 is disposed above the supply bobbin 20 and the take-up bobbin 30 (opposite the bottom surface 510).

[0072] In the second modified example, a guide pin 231 is provided on the holding member 23. The guide pin 231 protrudes from the holding member 23 toward the bottom surface 510. The guide pin 231 is an injection-molded product made of resin, and is molded using a mold in a manner similar to the guide pin 512 shown in FIGS. 9A and 9B. A gradient (taper; draft gradient) is provided on the mold to facilitate smooth release of the molded guide pin 231. Therefore, the guide pin 231 is formed with a tapered surface (inclined surface) whose diameter gradually decreases from the base side toward the tip side. As a result, the side surface of the guide pin 231 becomes a tapered surface (inclined surface) whose diameter decreases toward the bottom surface 510 side. That is, even in the second modified example, the side surface (contact surface) of the guide pin 231 that comes into contact with the cleaning element 3 becomes an inclined surface inclined in a direction that guides the cleaning element 3 toward the bottom surface 510 side. Therefore, in the second modified example as well, the cleaning element 3 can be prevented from being guided upward (to the side opposite to the bottom surface 510), and the cleaning element 3 can be prevented from climbing over the flange 32.

[0073] As in the second modified example, by providing guide pin 231 on a member separate from first housing portion 51A (member constituting bottom surface 510), it is possible to form an inclined surface that slopes inward toward the bottom surface on the entire circumferential surface of the side surface of the guide pin. Note that in the second embodiment, guide pin 231 is provided on holding member 23, but the guide pin may be provided on a member separate from holding member 23. For example, in a case where a lid member is attached to first housing portion 51A so as to cover the housing space of first housing portion 51A and the lid member is disposed opposite bottom surface 510, a guide pin that protrudes toward bottom surface 510 may be provided on the lid member.

[0074] 15 and 16, in the second modified example, the tip of the guide pin 231 is inserted into a hole 510B provided in the bottom surface 510. This fixes both ends of the guide pin 231, and even if the cleaning element 3 under tension comes into contact with the guide pin 231, deformation of the guide pin 231 can be suppressed. However, the tip of the guide pin 231 may not be inserted into the hole 510B (the tip of the guide pin 231 may not be fixed), and the guide pin 231 may be configured in a cantilever shape.

[0075] In the cleaning tool of the second embodiment including the first and second modifications, the components except for the guide pin (and its peripheral components) have the same configuration as in the first embodiment. Therefore, in the second embodiment, the body 31 of the take-up bobbin 30 (not shown in the second embodiment) has a tapered surface that is inclined between the pair of flanges 32, similar to the body 31 of the take-up bobbin 30 of the first embodiment shown in Fig. 6A. Therefore, in the second embodiment, as in the first embodiment, the cleaning element 3 can be prevented from being wound at an uneven position on the upper side of the take-up bobbin 30 (see Fig. 7), and the cleaning element 3 can be prevented from climbing over the flanges.

[0076] In the second embodiment, even if the body 31 of the take-up bobbin 30 is cylindrical as in the comparative example of Fig. 6B, the contact surfaces of the guide pin 512' and the guide pin 231 are inclined in a direction that guides the cleaning element 3 toward the bottom surface 510 (or are surfaces parallel to the rotation axis 511 as shown in Fig. 14B), thereby preventing the cleaning element 3 from being wound up at an offset position on the upper side of the take-up bobbin 30 (see Fig. 7), and reducing the cleaning element 3 from climbing over the flange. However, if the body 31 of the take-up bobbin 30 has a tapered surface as in Fig. 6A, the guide pin 512' and the guide pin 231 of the second embodiment can synergistically prevent the cleaning element 3 from being wound up at an offset position on the upper side of the take-up bobbin 30.

[0077] ===Other embodiments=== The above-described embodiments are intended to facilitate understanding of the present invention and are not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and it goes without saying that the present invention includes equivalents thereof. [Explanation of symbols]

[0078] 3 cleaning body, 7 mold, 10 head member, 11 head portion, 20 supply bobbins, 23 holding member, 231 guide pin, 30 winding bobbins, 31 body portion, 32 flange, 32A bobbin side ratchet gear, 40 tool body, 40A case, 41 support body, 42 support part, 43 rack, 44 protrusion, 50 Insertion part, 51 Container, 510 bottom, 510A, 510B holes, 51A first housing portion, 511 rotating shaft, 512,512',512" guide pin, 512A contact surface, 512B non-contact surface, 51B second housing portion, 52 spring holding portion, 55 coil spring, 60 rotating shaft, 61 shaft portion, 62 rotating cylinder portion, 62A cam groove portion, 621 first insertion hole, 622 second insertion hole, 70 cylinder body, 71 base cylinder part, 72 abutment part, 73 Tip tube part, 75 Spring for tube part, 80 gear member, 81 pinion, 82 gear side ratchet gear, 91 Winding mechanism, 91A Rack and pinion mechanism, 91B ratchet mechanism, 92 rotation mechanism, 100 cleaning tools

Claims

1. A cleaning body; a head member that presses the cleaning element against the cleaning target; a supply bobbin around which the cleaning element is wound and which supplies the cleaning element to the head member; a take-up bobbin that takes up the cleaning element from the supply bobbin via the head member; Equipped with The take-up bobbin includes a body portion around which the cleaning element is wound, a pair of flanges disposed on both ends of the body portion, a rotating shaft that holds the head member and rotates together with the head member; Equipped with The body portion has a tapered surface that is inclined between the pair of flanges, the head member rotates about an axis in a direction intersecting a direction in which the pair of flanges are arranged, as the head member is pressed against the cleaning target; the cleaning element is displaced in a predetermined direction relative to the take-up bobbin by the rotation of the head member; The tapered surface of the body portion becomes thicker in the predetermined direction, the rotating shaft has a first insertion hole through which the cleaning element to be supplied to the head member is inserted, and a second insertion hole through which the cleaning element to be transported from the head member to the take-up bobbin is inserted, the first insertion hole and the second insertion hole are arranged to sandwich a rotation axis of the rotary shaft, When the rotary shaft rotates together with the head member, the second insertion hole is displaced in the predetermined direction. A cleaning tool characterized by:

2. A cleaning body; a head member that presses the cleaning element against the cleaning target; a supply bobbin around which the cleaning element is wound and which supplies the cleaning element to the head member; a take-up bobbin that takes up the cleaning element from the supply bobbin via the head member; Equipped with The take-up bobbin includes a body portion around which the cleaning element is wound, a pair of flanges disposed on both ends of the body portion, a guide pin that is disposed between the head member and the take-up bobbin, that guides the cleaning element, and that has a tapered surface that is inclined with respect to a direction in which the pair of flanges are disposed; Equipped with The body portion has a tapered surface that is inclined between the pair of flanges, The cleaning tool according to claim 1, wherein the tapered surface of the body portion is inclined in a direction opposite to the tapered surface of the guide pin.

3. A cleaning tool according to claim 2, A cleaning tool, characterized in that the inclination angle of the tapered surface of the body portion is equal to or greater than the inclination angle of the tapered surface of the guide pin.

4. A cleaning tool according to claim 3, A cleaning tool, characterized in that the inclination angle of the tapered surface of the body portion is equal to the inclination angle of the tapered surface of the guide pin.

5. A cleaning tool according to any one of claims 1 to 4, A cleaning tool characterized in that an end of the cleaning element is fixed to a narrow diameter side of the body.

6. A cleaning tool according to any one of claims 1 to 4, A cleaning tool, characterized in that the diameter of the small diameter side of the body portion of the winding bobbin is smaller than the diameter of the body portion of the supply bobbin.

7. A cleaning tool according to any one of claims 1 to 4, A cleaning tool, characterized in that a mechanism for rotating the take-up bobbin is provided on the flange on the larger diameter side of the tapered surface of the body portion.

8. The cleaning tool according to claim 1, a storage section that stores the winding bobbin and has a rotation shaft of the winding bobbin protruding from a bottom surface thereof; a guide pin that is disposed between the head member and the take-up bobbin and that guides the cleaning element, A cleaning tool characterized in that the contact surface of the side of the guide pin that comes into contact with the cleaning body is a surface parallel to the rotation axis or an inclined surface that guides the cleaning body toward the bottom surface.

9. A cleaning tool according to claim 8, A cleaning tool characterized in that a mechanism for rotating the winding bobbin is provided on the flange on the opposite side of the bottom surface.

10. A cleaning tool according to claim 8 or 9, the guide pin protrudes from the bottom surface of the housing portion, A cleaning tool characterized in that a hole is formed in the bottom surface at the base of the contact surface.

11. A cleaning tool according to claim 10, A cleaning tool according to claim 1, wherein a surface inclined in a direction opposite to the inclined surface is formed on a side surface of the guide pin other than the contact surface.

12. A cleaning tool according to claim 8 or 9, The cleaning tool, wherein the guide pin protrudes toward the bottom surface from a member separate from the accommodating portion.

13. A cleaning tool according to claim 12, A cleaning tool characterized in that a tip of the guide pin is inserted into a hole in the bottom surface.

Images