Patent Publication Number: US-2017351039-A1

Title: Cleaning tool and cleaning method

Description:
TECHNICAL FIELD 
     The present disclosure relates to a cleaning tool and cleaning method. 
     BACKGROUND ART 
     Connection between optical connectors is achieved by abutting optical fiber end faces present at connection end faces (ferrule end faces) of the optical connectors. When there is dirt adhering to the connection end face of the optical connector or to the optical fiber end face, then this causes damage to the optical connector or the optical fiber, or causes an increase in transmission loss, or the like. There is accordingly a need to clean the connection end face of the optical connector prior to the abutting/connection. Patent Literature 1 discloses an example of a cleaning tool. This cleaning tool includes a tool body, and an insertion section (extending section) with a head member to press a cleaning element against the connection end face of the optical connector. In this cleaning tool, the tool body is moved with respect to the insertion section in a state in which the cleaning element is pressed against the optical connector; this causes the cleaning element to be supplied and collected and also causes the head member to rotate, thereby enabling the cleaning element to wipe the connection end face of the optical connector. 
     CITATION LIST 
     Patent Literature 
     Patent Literature 1: Japanese Patent No. 4579330 
     In cases in which dirt is strongly adhered to the connection end face of an optical connector or to an optical fiber end face, sometimes the dirt cannot be removed even when cleaning is performed with a dry cleaning element of a cleaning tool. In such cases, for example, an operator soaks a cotton bud in a liquid cleaner such as alcohol, and removes the strongly adhered dirt from the end face. However, in such a cleaning method, not only does the cleaning operation take some effort to perform, but also there is a large difference in the cleaning techniques of operators. 
     A cleaning tool capable of easily removing strongly adhered dirt may, thus, be beneficial. 
     SUMMARY OF INVENTION 
     One or more embodiments of the invention concern a cleaning tool including: a head member to press a cleaning element at a pressing face against a cleaning target; a feed mechanism to supply the cleaning element to the pressing face and to collect the cleaning element from the pressing face; and a liquid supply section to supply a liquid cleaner so as to moisten the cleaning element at the pressing face with the liquid cleaner. 
     Other features of embodiments of the invention are made clear by the Description and Drawings below. 
     Advantageous Effects of Embodiments of the Invention 
     One or more embodiments of the invention enable strongly adhered dirt to be removed easily. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is an overall perspective view of a cleaning tool  1  of a first embodiment. 
         FIG. 2  is a diagram illustrating an internal configuration of a tool body  10  of the cleaning tool  1 . 
         FIG. 3  is a diagram illustrating internal configuration of an insertion section  20  of the cleaning tool  1 . 
         FIG. 4A  and  FIG. 4B  are perspective views of a vicinity of a leading end of the cleaning tool  1 . 
         FIG. 5A  is a diagram illustrating an example of configuration of a liquid supply section  30 .  FIG. 5B  and  FIG. 5C  are diagrams illustrating configurations of different chambers  31 . 
         FIG. 6A  is an explanatory diagram of a situation in which a liquid cleaner  5  has been dispensed from a dispensing port  37 A.  FIG. 6B  illustrates a range over which the liquid cleaner  5  has permeated the cleaning element  3  after supply of a predetermined amount of the liquid cleaner  5 . 
         FIG. 7A  is a perspective view of an insertion section  20  of a cleaning tool  1  of a second embodiment.  FIG. 7B  is an explanatory diagram of a pressing face  22  of a head member  21  and a dispensing port  37 A of a liquid supply section  30  of the second embodiment. 
         FIG. 8A  is an explanatory diagram of a positional relationship between a cleaning element  3  and the dispensing port  37 A at the pressing face  22 .  FIG. 8B  is an explanatory diagram of a trajectory of the cleaning element  3  and a trajectory of the dispensing port  37 A when the head member  21  is rotated during cleaning. 
         FIG. 9A  is a diagram illustrating an internal configuration of a tool body  10  of a cleaning tool  1  of a third embodiment.  FIG. 9B  is a diagram illustrating an internal configuration of an insertion section  20  of the cleaning tool  1  of the third embodiment. 
         FIG. 10A  is a diagram illustrating an internal configuration of a tool body  10  of a cleaning tool  1  of a fourth embodiment.  FIG. 10B  is a diagram illustrating an internal configuration of an insertion section  20  of the cleaning tool  1  of the fourth embodiment. 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     At least the following matters are made clear from the Description and Drawings described below. 
     Disclosed are embodiments of a cleaning tool including: a head member to press a cleaning element at a pressing face against a cleaning target; a feed mechanism to supply the cleaning element to the pressing face and to collect the cleaning element from the pressing face; and a liquid supply section to supply a liquid cleaner so as to moisten the cleaning element at the pressing face with the liquid cleaner. Such a cleaning tool can easily remove strongly adhered dirt. 
     In one or more embodiments of the invention, the liquid supply section includes an open-close section capable of blocking a flow path of the liquid cleaner; and the liquid cleaner flows in the flow path and is supplied when the open-close section has opened the flow path. With this configuration, the liquid cleaner can be supplied and blocked. 
     In one or more embodiments of the invention, an operation section is provided to operate the open-close section. This may enable an operator to decide whether or not there is a need to moisten the cleaning element. 
     In one or more embodiments of the invention, the cleaning tool further includes a tool body, and an insertion section including the head member and capable of moving in a predetermined direction relative to the tool body; and the open-close section is opened or closed by relative movement between the tool body and the insertion section when cleaning the cleaning target by moving the tool body and the insertion section relative to each other while pressing the cleaning element at the pressing face against the cleaning target. This may enable prevention of forgetting to moisten the cleaning element during cleaning. 
     In one or more embodiments of the invention, a predetermined amount of the liquid cleaner is supplied when the open-close section has opened the flow path. This may enable oversupply of the liquid cleaner to be suppressed from occurring. 
     In one or more embodiments of the invention, when the predetermined amount of the liquid cleaner has been supplied, the liquid cleaner permeates the cleaning element up to the pressing face. This may enable the cleaning target to be moistened with the liquid cleaner at the stage when the cleaning element has contacted the cleaning target during cleaning. 
     In one or more embodiments of the invention, L 1 &lt;L 2  is satisfied, wherein L 1  is a length up to the pressing face from an upstream end of a range over which the liquid cleaner has permeated the cleaning element when the predetermined amount of the liquid cleaner has been supplied, and L 2  is a length of the cleaning element fed by the feed mechanism when cleaning the cleaning target by pressing the cleaning element at the pressing face against the cleaning target. This may enable dry cleaning to be performed after wet cleaning has been performed. 
     In one or more embodiments of the invention, when cleaning the cleaning target by pressing the cleaning element at the pressing face against the cleaning target, at the pressing face, a portion of the cleaning element not permeated by the liquid cleaner is pressed against the cleaning target after a portion of the cleaning element permeated by the liquid cleaner has been pressed against the cleaning target. This may enable residue of the liquid cleaner to be suppressed from remaining since dry cleaning is performed after wet cleaning has been performed. 
     In one or more embodiments of the invention, the liquid supply section includes a dispensing port to dispense the liquid cleaner to the cleaning element. This may enable the liquid cleaner to be dispensed directly to the cleaning element. 
     In one or more embodiments of the invention, the head member includes a guide to guide the cleaning element at the dispensing port. This may enable the liquid cleaner to be suppressed from spilling. 
     In one or more embodiments of the invention, the cleaning element has a strip shape. This may enable the liquid cleaner to be suppressed from spilling. 
     In one or more embodiments of the invention, the liquid supply section includes a dispensing port facing the cleaning target; and the liquid cleaner dispensed from the dispensing port contacts the cleaning element when cleaning the cleaning target by pressing the cleaning element at the pressing face against the cleaning target. This may enable the cleaning element to be indirectly moistened with the liquid cleaner. 
     In one or more embodiments of the invention, the head member is configured so as to rotate when cleaning the cleaning target by pressing the cleaning element at the pressing face against the cleaning target; and a trajectory of the dispensing port when the head member is rotated and a trajectory of the cleaning element at the pressing face when the head member is rotated overlap with each other. This may make it easier to indirectly moisten the cleaning element with the liquid cleaner. 
     In one or more embodiments of the invention, the cleaning element is fed from an upstream side to a downstream side at the pressing face when cleaning the cleaning target by pressing the cleaning element at the pressing face against the cleaning target; and a trajectory of the dispensing port when the head member is rotated and a trajectory of the cleaning element on the upstream side at the pressing face when the head member is rotated overlap with each other. This may result in an effective configuration for wet cleaning. 
     In one or more embodiments of the invention, the head member is configured so as to perform a to-and-fro reciprocating rotation when cleaning the cleaning target by pressing the cleaning element at the pressing face against the cleaning target; and an initial position of the dispensing port prior to rotation of the head member and a trajectory of the cleaning element on the upstream side at the pressing face when the head member is rotated during an outbound path overlap with each other. This may make it easier to indirectly moisten the cleaning element with the liquid cleaner partway along an outbound path. 
     Disclosed is a cleaning method in accordance with one or more embodiments of the invention, involving: supplying a cleaning element to a pressing face of a head member and collecting the cleaning element from the pressing face; supplying a liquid cleaner to moisten the cleaning element at the pressing face with the liquid cleaner; and pressing the cleaning element moistened with the liquid cleaner against the cleaning target at the pressing face. According to such a cleaning method, strongly adhered dirt can be easily removed. 
     First Embodiment 
     First a basic configuration of a cleaning tool  1 , in accordance with one or more embodiments of the invention, will be described, and then a liquid supply section  30  of the cleaning tool  1  will be described. 
     &lt;Cleaning Tool  1  Basic Configuration&gt; 
       FIG. 1  is an overall perspective view of a first embodiment of the cleaning tool  1 .  FIG. 2  is a diagram illustrating an internal configuration of a tool body  10  of the cleaning tool  1 .  FIG. 3  is a diagram illustrating an internal configuration of an insertion section  20  of the cleaning tool  1 .  FIG. 4A  and  FIG. 4B  are perspective views of a vicinity of a leading end of the cleaning tool  1 . 
     In the following description each direction is defined as indicated in the drawings. Namely, a direction in which the insertion section  20  extends out from the tool body  10  is the “front-rear” direction, with the side of the insertion section  20  as viewed from the tool body  10  as the “front” and the opposite side the “rear”. An axial direction of a rotation shaft of a take-up reel  13 B in the tool body  10  is the “left-right direction”, with the right side when viewed from the rear toward the front as the “right”, and the opposite side thereto as the “left”. A direction perpendicular to both the front-rear direction and the left-right direction is the “top-bottom direction”. 
     In one or more embodiments of the invention, the cleaning tool  1  is a tool to clean a ferrule end face (optical fiber end face) of an optical connector. The cleaning tool  1  includes a head member  21  and a feed mechanism  13  to supply a cleaning element  3  and to collect the cleaning element  3 . A pressing face  22  (head face) is provided at the end of the head member  21 , and the cleaning element  3  is entrained around the pressing face  22 . The cleaning tool  1  includes the tool body  10 , and the insertion section  20  that is capable of moving in the front-rear direction relative to the tool body  10 . The feed mechanism  13  utilizes relative movement between the tool body  10  and the insertion section  20  during cleaning to supply unused cleaning element  3  to the pressing face  22 , and to collect the used cleaning element  3  (described later). 
     In order to clean an optical connector using the cleaning tool  1 , an operator may hold the tool body  10  in his/her hand, and may insert the leading end of the insertion section  20  into an optical adaptor, may press the cleaning element  3  at the pressing face  22  against the optical connector inside the optical adaptor, and in this state may move the tool body  10  forward (a push action). The operator then may pull the insertion section  20  out from the optical adaptor (a pull action). The push action and the pull action may be performed in this manner during the cleaning action. In the push action, the tool body  10  moves forward relative to the insertion section  20 , and, as viewed from the tool body  10 , the insertion section  20  moves rearward relative to the tool body  10 . In the pull action, the tool body  10  moves rearward relative to the insertion section  20 , and, as viewed from the tool body  10 , the insertion section  20  moves forward relative to the tool body  10 . 
     As described above, in one or more embodiments of the invention, relative movement between the tool body  10  and the insertion section  20  in the front-rear direction during cleaning is utilized by the feed mechanism  13  to supply the cleaning element  3  and to collect the cleaning element  3 . However, the feed mechanism  13  may supply the cleaning element  3  and collect the cleaning element  3  using another method. For example, a circular disc shaped dial may be provided, and the operator may supply the cleaning element  3  and collect the cleaning element  3  by rotating the dial. A cleaning tool  1  equipped with such a feed mechanism  13 , in accordance with an embodiment of the invention, does not need to move the tool body  10  and the insertion section  20  relative to each other in the front-rear direction. Moreover, in one or more embodiments, the relative movement between the tool body  10  and the insertion section  20  in the front-rear direction during cleaning may further be utilized to rotate the head member  21  in a rotation direction about an axis along the front-rear direction. However, there is no necessity for the head member  21  to rotate. 
     In one or more embodiments the cleaning element  3  is strip shaped (tape shaped) having a degree of width. Employing the strip shaped cleaning element  3  enables reliable cleaning of the optical fiber end face at the end face of the optical connector. However, the shape of the cleaning element  3  is not limited to being strip shaped, and may be thread shaped. The cleaning element  3  is preferably configured by a nonwoven fabric or a woven fabric using fibers of polyester, nylon, or the like. However, the material and form of the cleaning element  3  is not limited thereto. 
     As described above, the cleaning tool  1 , in accordance with one or more embodiments of the invention, includes the tool body  10  and the insertion section  20 . 
     The tool body  10  is a section that may be gripped by an operator during cleaning. The tool body  10  includes a case body  11  and the feed mechanism  13 . 
     In one or more embodiments of the invention, the case body  11  is a housing body that internally houses the cleaning element  3 , the feed mechanism  13  that supplies the cleaning element  3  and collects the cleaning element  3 , and the like. As illustrated in  FIG. 2 , a rack  11 A and a spring seat  11 B are fixed to the case body  11 . The rack  11 A is a section that configures a rack and pinion mechanism together with a gear of the feed mechanism  13 . The rack and pinion mechanism converts front-rear direction linear motion of the tool body  10  and the insertion section  20  into rotary motion during cleaning. The spring seat  11 B is a section provided on an inner wall face of the case body  11 , and is a section making contact with one end (the rear end) of a coil spring  13 E, and retaining the one end of the coil spring  13 E. A pin shaped insertion protrusion  11 C is formed on an inner wall face (the left inner wall face) of the case body  11 , and projects out toward the inside (the right side). The insertion protrusion  11 C fits into a cam groove  15 B of a rotating cylinder  15 A of a rotating body  15 , and, together with the cam groove  15 B, configures a rotation mechanism (a mechanism to rotate the rotating body  15 : described later). 
     In one or more embodiments of the invention, the feed mechanism  13  is a mechanism to supply the cleaning element  3  and to collect the cleaning element  3 . The feed mechanism  13  includes a supply reel  13 A, the take-up reel  13 B, a pinion  13 C (gear), a moving body  13 D, and the coil spring  13 E (see  FIG. 2 ). 
     In one or more embodiments of the invention, the supply reel  13 A is a reel to supply unused cleaning element  3 . The unused cleaning element  3  is wound onto the supply reel  13 A. The take-up reel  13 B is a reel to take up the used cleaning element  3  and to collect the used cleaning element  3 . 
     In one or more embodiments of the invention, the pinion  13 C is a section that, together with the rack  11 A fixed to the case body  11 , configures the rack and pinion mechanism. A transmission mechanism is interposed between the pinion  13 C and the take-up reel  13 B. Configuration is made such that when the pinion  13 C rotates in a predetermined direction, the take-up reel  13 B also rotates; however, when the pinion  13 C rotates in the opposite direction, the rotation force therefrom is not transmitted to the take-up reel  13 B, and the take-up reel  13 B does not rotate. This means that the take-up reel  13 B only rotates in a direction to take-up the cleaning element  3  (the take-up direction). 
     In one or more embodiments of the invention, the moving body  13 D is a member that moves together with the insertion section  20  in the front-rear direction relative to the case body  11 . The moving body  13 D supports the supply reel  13 A, the take-up reel  13 B, and the pinion  13 C, so as to each be rotatable. When the tool body  10  and the insertion section  20  are moved relative to each other in the front-rear direction during cleaning, inside the case body  11 , the moving body  13 D moves relative to the case body  11  in the front-rear direction. Due to the pinion  13 C being rotated by this relative movement, the take-up reel  13 B rotates in the take-up direction and collects the cleaning element  3 , and unused cleaning element  3  of an amount equivalent to the amount collected onto the take-up reel  13 B is supplied from the supply reel  13 A. A spring seat is provided on the moving body  13 D. The spring seat is a section that contacts one end (the front end) of the coil spring  13 E, and retains the one end of the coil spring  13 E. The moving body  13 D rotatably supports the rotating cylinder  15 A of the rotating body  15 . 
     In one or more embodiments of the invention, the coil spring  13 E is a member to restore the positional relationship between the tool body  10  and the insertion section  20 . The coil spring  13 E is disposed between the case body  11  and the moving body  13 D. More specifically, the front end of the coil spring  13 E is retained in the spring seat of the moving body  13 D, and the rear end of the coil spring  13 E is retained in the spring seat  11 B of the case body  11 . When the insertion section  20  is moved rearward relative to the tool body  10  during cleaning, inside the case body  11 , the moving body  13 D moves rearward relative to the case body  11 , causing the coil spring  13 E to undergo compression deformation. When the coil spring  13 E that has been compression deformed rebounds, the moving body  13 D returns to its original position inside the case body  11 , causing the insertion section  20  to move forward with respect to the tool body  10  and return to its original position. 
     As described above, in one or more embodiments, the cleaning tool  1  utilizes the relative movement between the tool body  10  and the insertion section  20  in the front-rear direction during cleaning to rotate the head member  21  pressing the cleaning element  3  against the optical connector. The cleaning tool  1 , in one or more embodiments, accordingly includes the rotating body  15  to rotate the head member  21 . 
     In one or more embodiments of the invention, the rotating body  15  is a member that performs to-and-fro reciprocating rotation (outbound and return rotation) about an axis lying along the front-rear direction, and rotates the head member  21 . The rotating body  15  includes the rotating cylinder  15 A, a guide  15 C, and a head support  15 D (see  FIG. 3 ). 
     In one or more embodiments of the invention, the rotating cylinder  15 A is a cylindrical shaped location including the helical shaped cam groove  15 B. The rotating cylinder  15 A is rotatably supported by the moving body  13 D of the tool body (see  FIG. 2 ), and moves together with the moving body  13 D (and the insertion section  20 ) relative to the case body  11  in the front-rear direction. The cam groove  15 B is a groove formed in a helical shape in the outer surface of the rotating cylinder  15 A. The pin shaped insertion protrusion  11 C projecting out from the inner wall face (the left wall face) of the case body  11  toward the inside (the right side) fits into the cam groove  15 B. The cam groove  15 B is a section that, together with the insertion protrusion  11 C, configures a rotation mechanism to rotate the rotating body  15 . The rotation mechanism configured by the cam groove  15 B and the insertion protrusion  11 C utilizes the relative movement (linear motion) between the tool body  10  and the insertion section  20  in the front-rear direction during cleaning to rotate the rotating body  15 . The rotating cylinder  15 A is formed hollow, wherein the unused cleaning element  3  supplied from the supply reel  13 A onto the pressing face  22  is inserted through the rotating cylinder  15 A in the front-rear direction, and the used cleaning element  3  collected from the pressing face  22  onto the take-up reel  13 B is inserted through the rotating cylinder  15 A in the front-rear direction. 
     In one or more embodiments of the invention, the guide  15 C is a section to guide the cleaning element  3  in the front-rear direction. The guide  15 C is a section formed along the front-rear direction in a long-thin plate shape. One plate face of the guide  15 C guides the unused cleaning element  3  supplied from the supply reel  13 A onto the pressing face  22 , and the other plate face guides the used cleaning element  3  collected from the pressing face  22  onto the take-up reel  13 B. The guide  15 C is disposed in front of the rotating cylinder  15 A, and is housed primarily in the insertion section  20 . The guide  15 C is integrally configured with the rotating cylinder  15 A. 
     In one or more embodiments of the invention, the head support  15 D is a section that supports the head member  21 . The head support  15 D supports the head member  21  so as to enable the head member  21  to retract when the cleaning element  3  at the pressing face  22  is pressed against the optical connector. The head support  15 D supports the head member  21  while restricting (limiting) relative movement in a rotation direction such that there is no relative movement between the head support  15 D and the head member  21  in the rotation direction. Hence, when the rotating body  15  rotates about the axis along the front-rear direction, the head member  21  also rotates together with the rotating body  15 . Note that the front end of the head support  15 D contacts the rear end of a head spring  23 . 
     In one or more embodiments of the invention, the insertion section  20  is a section inserted into an insertion port of a cleaning target (an optical connector), and is provided so as to project forward from the tool body  10 . The insertion section  20  is able to move in the front-rear direction relative to the tool body  10 . The insertion section  20  includes the head member  21 , the head spring  23  and a cylinder body  25 . 
     In one or more embodiments of the invention, the head member  21  is a member that presses the cleaning element  3  against the optical connector, which is the cleaning target. The head member  21  includes a head  211 , a flange  213 , and a base end  215  (see  FIG. 3 ,  FIG. 4A  and  FIG. 4B ). 
     In one or more embodiments of the invention, the head  211  is a section positioned in front of the head member  21 , and is a section that presses the cleaning element  3  against the cleaning target. The front end face of the head  211  is configured by the pressing face  22  (head face) to press the cleaning element  3  against the cleaning target. The cleaning element  3  is entrained around the pressing face  22 . The head  211  is positioned at an end of the insertion section  20 , and the cleaning element  3  entrained around the pressing face  22  is externally exposed so as to press the cleaning element  3  against the optical connector. 
     In one or more embodiments of the invention, the head  211  includes guides  211 A to guide the cleaning element  3  along the front-rear direction. The guides  211 A are formed by ridges along the front-rear direction at the outside of both the left and right edges of the cleaning element  3  so as to contact the both the left and right edges of the cleaning element  3 . In one or more embodiments, such guides  211 A are formed in the vicinity of a dispensing port  37 A. This thereby enables a liquid cleaner  5  to be suppressed from spilling out from the cleaning element  3  by the guides  211 A (see  FIG. 6A ). 
     In one or more embodiments of the invention, the flange  213  is a section rearward of the head  211 , and has an external periphery that projects out more than that of the head  211 . The flange  213  contacts the front end of the head spring  23 , and the head member  21  is pressed forward by the head spring  23  through the flange  213 . 
     In one or more embodiments of the invention, the base end  215  is a section to the rear of the flange  213 . The base end  215  is supported by the head support  15 D so as to be able to retract while being restricted in rotational movement relative to the head support  15 D. 
     The head spring  23  is inserted into the base end  215 . 
     In one or more embodiments of the invention, the head spring  23  is an elastic member to press the head member  21  forward. The head spring  23  is disposed in a compression deformed state between the flange  213  of the head member  21  and the head support  15 D of the rotating body  15 . This enables the cleaning element  3  at the pressing face  22  of the head member  21  to be pressed against the optical connector with a predetermined pressing force. 
     In one or more embodiments of the invention, the cylinder body  25  is a member (cover) to cover the cleaning element  3  at the insertion section  20 . The cylinder body  25  is coupled to the moving body  13 D of the tool body  10 , and is capable of moving in the front-rear direction relative to the tool body  10 . The cylinder body  25  includes a base cylinder section  251  on the tool body  10  side (the base end side) and a leading end cylinder section  253  on the head member  21  side (the front side, the leading end side). The base cylinder section  251  and the leading end cylinder section  253  may be configured integrally to each other. 
     As illustrated in  FIG. 4A , in one or more embodiments, a lead-in hole  251 A is formed in the base cylinder section  251  to lead a tube  37  serving as a supply channel for the liquid cleaner  5  into the leading end cylinder section  253 . A retention groove  253 A is also formed in the leading end cylinder section  253  to retain the tube  37 . The liquid cleaner  5  and the tube  37  are described later. 
     &lt;Liquid Supply Section  30 &gt; 
     As already described, the cleaning tool  1 , in accordance with one or more embodiments includes the liquid supply section  30  that moistens the cleaning element  3  with the liquid cleaner  5  (see  FIG. 1 ). This enables strongly adhered dirt to be easily removed due to being able to press the moistened cleaning element  3  at the pressing face  22  of the head member  21  against the cleaning target. 
     In one or more embodiments of the invention, the liquid cleaner  5  is a liquid to clean the cleaning target. The liquid cleaner  5  is, for example, pure water, alcohol, or the like. The liquid cleaner  5  is preferably a liquid that leaves not residue after drying. 
       FIG. 5A  is a diagram illustrating an example of a configuration of the liquid supply section  30 , in accordance with one or more embodiments of the invention. The liquid supply section  30  includes a chamber  31 , an open-close section  33 , an operation section  35 , and the tube  37 . 
     In one or more embodiments of the invention, the chamber  31  is a pressure chamber to apply pressure to the liquid cleaner  5 . The liquid cleaner  5  is stored in the chamber  31 , and surface pressure is applied to the liquid by a high pressure gas. The liquid cleaner  5  inside the chamber  31  is supplied to the open-close section  33 . 
     The chamber  31  is not limited to a form in which surface pressure is applied to the liquid.  FIG. 5B  and  FIG. 5C  are diagrams illustrating configurations of alternative chambers  31 , in accordance with one or more embodiments of the invention. As illustrated in  FIG. 5B , pressure may be applied to the liquid cleaner  5  by sealing the liquid cleaner  5  inside a bag, and applying pressure to the bag using high pressure gas. Moreover, as illustrated in  FIG. 5C , pressure may be applied to the liquid cleaner  5  by applying pressure to a bag using the elastic force of a spring or the like, instead of applying pressure using high pressure gas. 
     The pressure inside the chamber  31  may sometimes become lower as a result of supplying the liquid cleaner  5 . Thus, a configuration may be adopted to raise the pressure of the chamber  31  by operation of the operation section  35 . Alternatively, the relative movement (linear motion) between the tool body  10  and the insertion section  20  during cleaning may be utilized to raise the pressure of the chamber  31 . Note that the liquid supply section  30  may be configured such that instead of applying pressure to the liquid cleaner  5  using the chamber  31  to supply the liquid cleaner  5 , a predetermined amount of liquid cleaner may be sucked out of a reservoir, as in a dispenser pump, so as to supply a predetermined amount of the sucked liquid cleaner. 
     In one or more embodiments of the invention, the open-close section  33  is a member that opens or closes a flow path of the liquid cleaner  5 . The flow path is blocked when the open-close section  33  has closed the flow path, and so the liquid cleaner  5  does not flow along the flow path, and the liquid cleaner  5  is not supplied. The flow path is open when the open-close section  33  has opened the flow path, and the liquid cleaner  5  flows along the flow path under the pressure of the chamber  31 , thereby supplying the liquid cleaner  5 . Provision of the open-close section  33  in the liquid supply section  30  enables liquid to be prevented from dripping due to being able to block the flow path using the open-close section  33 . The open-close section  33  is disposed together with the chamber  31  in the tool body  10  (see  FIG. 1 ). 
     In one or more embodiments of the invention, the operation section  35  is a section to operate the open-close section  33  (see  FIG. 1 ). In one or more embodiments, the operation section  35  is formed in a button shape, however the operation section  35  may have another form. When the operator presses the operation section  35 , the open-close section  33  opens the flow path only for a fixed period of time, such that the predetermined amount of the liquid cleaner  5  flows along the flow path. Note that in order to suppress oversupply of the liquid cleaner  5 , a configuration may be adopted in which the open-close section  33  opens the flow path only for the fixed period of time, instead of configuration such that the open-close section  33  continues to keep the flow path open when the operator presses the operation section  35  continuously. 
     In one or more embodiments of the invention, instead of opening or closing the open-close section  33  using the operation section  35 , the open-close section  33  may be opened or closed by utilizing the relative movement (linear motion) between the tool body  10  and the insertion section  20  during cleaning. This enables the open-close section  33  to be opened or closed without providing the operation section  35 . Opening or closing the open-close section  33  by utilizing the relative movement (linear motion) between the tool body  10  and the insertion section  20  during cleaning enables the operator to be prevented from forgetting to moisten the cleaning element  3  during cleaning. In contrast thereto, a configuration in which the opening or closing of the open-close section  33  is performed using the operation section  35 , in accordance with one or more embodiments, enables a dry cleaning method or a wet cleaning method to be selected as desired due to the operator being able to decide whether or not there is a need to moisten the cleaning element  3 . 
     In one or more embodiments of the invention, the tube  37  is a member configuring a flow path at the downstream side of the open-close section  33 . The upstream end of the tube  37  is coupled to the open-close section  33 , and the downstream end of the tube  37  is configured by the dispensing port  37 A that dispenses the liquid cleaner  5 . The dispensing port  37 A is disposed at the pressing face  22  so as to enable moistening of the cleaning element  3 . 
       FIG. 6A  is an explanatory diagram of a situation in which the liquid cleaner  5  has been dispensed from the dispensing port  37 A. In accordance with one or more embodiments, the dispensing port  37 A is disposed inside the insertion section  20  facing the cleaning element  3 . The dispensing port  37 A in the drawing is disposed facing the unused cleaning element  3  at the upstream side of the pressing face  22 . This enables the liquid cleaner  5  to be directly dispensed from the dispensing port  37 A to the cleaning element  3 , so as to moisten the cleaning element  3 . However, the dispensing port  37 A may be disposed facing the cleaning target so as to moisten the cleaning element  3  indirectly as in an embodiment described later. 
     In one or more embodiments of the invention, the tube  37  is configured from a flexible material capable of undergoing deformation so as permit relative movement between the tool body  10  and the insertion section  20  in the front-rear direction. The tube  37  is, for example, a silicone tube  37 . In such cases in which the tube  37  is made from a flexible material, the position of the dispensing port  37 A would be liable to become unstable. Thus in one or more embodiments, the position of the dispensing port  37 A is fixed by the tube  37  being retained by the retention groove  253 A formed in the leading end cylinder section  253 . 
     In one or more embodiments of the invention, the predetermined amount of the liquid cleaner  5  is dispensed from the dispensing port  37 A when the operator presses the operation section  35 . In one or more embodiments, due to provision of the guides  211 A in the vicinity of the dispensing port  37 A to guide the cleaning element  3  in the front-rear direction, the liquid cleaner  5  dispensed onto the cleaning element  3  is not liable to spill outwards in the left-right direction, and instead permeates the cleaning element  3  along the front-rear direction. 
     In one or more embodiments, the amount of liquid cleaner  5  absorbed is greater than for a cleaning element of thread shape due to the cleaning element  3  having a strip shape. Spillage of the dispensed liquid cleaner  5  is thereby readily suppressed due to employing the strip shaped cleaning element  3 . 
       FIG. 6B  is a diagram illustrating a range of the liquid cleaner  5  permeated the cleaning element  3  after the predetermined amount of the liquid cleaner  5  has been supplied. The region indicated by hatching in the drawing indicates the range over which the liquid cleaner  5  permeated the cleaning element  3 . 
     In one or more embodiments, the liquid cleaner  5  permeates the cleaning element  3  up to the pressing face  22  when the predetermined amount of the liquid cleaner  5  has been supplied, in accordance with one or more embodiments of the invention. Thus, the end face of the optical connector can be moistened with the liquid cleaner  5  at the stage when the cleaning element  3  contacts the optical connector during cleaning, even before moving the tool body  10  and the insertion section  20  relative to each other. However, it is sufficient for the cleaning element  3  at the pressing face  22  to be moisten with the liquid cleaner  5  when the cleaning element  3  is fed onto the pressing face  22  during cleaning; so, the liquid cleaner  5  does not necessarily have to permeate the cleaning element  3  up to the pressing face  22  at the stage when the predetermined amount of the liquid cleaner  5  has just been supplied. 
     Moreover, as illustrated in  FIG. 6B , in one or more embodiments of the invention, length L 1  is a length up to the pressing face  22  from the upstream end of the range over which the liquid cleaner  5  has permeated when the predetermined amount of the liquid cleaner  5  has been supplied. L 1  is set less than L 2  (L 1 &gt;L 2 ) wherein length L 2  is a length of the cleaning element  3  fed by the feed mechanism  13  during cleaning. Thus, during cleaning, a portion of the cleaning element  3  not permeated by the liquid cleaner  5  (in the drawing, the cleaning element  3  more toward the upstream side than the upstream end of the range over which the liquid cleaner  5  has permeated) is pressed against the cleaning target after a portion of the cleaning element  3  permeated by the liquid cleaner  5  has been pressed against the cleaning target at the pressing face  22 . Namely, this result in dry cleaning (dry wiping) being performed after wet cleaning has been performed. This enables any remaining liquid cleaner  5  to be removed by dry cleaning even if some of the liquid cleaner  5  from the period of wet cleaning still remains on the end face of the optical connector. No residue may be left on the end face of the optical connector. 
     As described above, the cleaning tool  1  of the first embodiment includes: the head member  21  to press the cleaning element  3  at the pressing face  22  against the cleaning target (for example, an optical connector); the feed mechanism  13  that supplies the cleaning element  3  and collects the cleaning element  3 ; and the liquid supply section  30  to moisten the cleaning element  3  at the pressing face  22  with the liquid cleaner  5 . This thereby enables strongly adhered dirt to be easily removed. Moreover, a cleaning operation using such a cleaning tool is not only completed without effort for the cleaning operation, but is also not liable to be affected by differences in the cleaning techniques of operators. 
     Second Embodiment 
       FIG. 7A  is a perspective view of an insertion section  20  of a cleaning tool  1  in accordance with a second embodiment.  FIG. 7B  is an explanatory diagram of a pressing face  22  of a head member  21  and a dispensing port  37 A of a liquid supply section  30  in the second embodiment. Substantially similar to the first embodiment, in the second embodiment the cleaning tool  1  includes the head member  21 , the feed mechanism  13 , and the liquid supply section  30 . Substantially similar to the first embodiment, in the second embodiment the head member  21  is configured so as to be capable of rotating about an axis along the front-rear direction. 
     In the second embodiment as well, the head member  21  presses a cleaning element  3  at a pressing face  22  against a cleaning target. However, in the second embodiment, the cleaning element  3  is thread shaped instead of strip shaped. The feed mechanism  13  is configured so as to supply the thread shaped cleaning element  3  and to collect the thread shaped cleaning element  3 . 
     As illustrated in  FIG. 7B , a supply side insertion hole  22 A and a return side insertion hole  22 B are formed in the pressing face  22  of the head member  21 , in accordance with one or more embodiments of the invention. The unused cleaning element  3  supplied from a supply reel  13 A is supplied through the supply side insertion hole  22 A onto the pressing face  22 , and the used cleaning element  3  is collected from the pressing face  22  through the return side insertion hole  22 B and collected onto a take-up reel  13 B. The cleaning element  3  is entrained around the pressing face  22  from the supply side insertion hole  22 A to the return side insertion hole  22 B. The supply side insertion hole  22 A is positioned at the upstream side on the pressing face  22 , and the return side insertion hole  22 B is positioned at the downstream side on the pressing face  22 . 
     As illustrated in  FIG. 7B , the dispensing port  37 A of the liquid supply section  30  is formed in the pressing face  22  of the head member  21 , in accordance with one or more embodiments of the invention. The liquid supply section  30  supplies the liquid cleaner  5  onto the pressing face  22  through the tube  37 , and dispenses the liquid cleaner  5  at the dispensing port  37 A. During cleaning, since the pressing face  22  of the head member  21  faces toward the cleaning target (for example, an optical connector), the dispensing port  37 A also faces toward the cleaning target during cleaning. In the second embodiment, the liquid cleaner  5  dispensed from the dispensing port  37 A is not directly dispensed toward the cleaning element  3 , and is instead dispensed toward the cleaning target. However, due to the liquid cleaner  5  coated onto the cleaning target contacting the cleaning element  3 , the liquid supply section  30  is able to indirectly moisten the cleaning element  3  at the pressing face  22  with the liquid cleaner  5 . Thus, strongly adhered dirt can be easily removed in the second embodiment due to being able to perform wet cleaning. 
     In the second embodiment, preferably an open-close section  33  is opened or closed by utilizing the relative movement (linear motion) between the tool body  10  and the insertion section  20  during cleaning instead of opening or closing the open-close section  33  using an operation section  35  as in the first embodiment. Thus when the liquid cleaner  5  is being dispensed from the dispensing port  37 A, the cleaning element  3  at the pressing face  22  is readily indirectly moistened with the liquid cleaner  5  due to the pressing face  22  being in a state facing toward the cleaning target. 
       FIG. 8A  is an explanatory diagram regarding a positional relationship between the cleaning element  3  at the pressing face  22  and the dispensing port  37 A, in accordance with one or more embodiments of the invention. As illustrated in the drawing, the dispensing port  37 A is disposed at a different position to the position of the cleaning element  3  when the pressing face  22  is viewed from the front. Note that were the dispensing port  37 A to be disposed behind (at the rear side of) the cleaning element  3 , then there would be a height difference behind the cleaning element  3 , making it difficult to press the cleaning element  3  against the cleaning target at the pressing face  22 . Thus, in one or more embodiments, the dispensing port  37 A is disposed at a different position to the position of the cleaning element  3 . 
     As already explained, the head member  21  utilizes the relative movement between the tool body  10  and the insertion section  20  in the front-rear direction during cleaning to rotate in a rotation direction about an axis along the front-rear direction, in accordance with one or more embodiments of the invention. The rotation of the head member  21  when this occurs is a to-and-fro reciprocating rotation (out and return rotation) over a predetermined range instead of continuous rotation in one direction. Namely, an operator presses the cleaning element  3  at the pressing face  22  against the optical connector, and when the tool body  10  is moved forward in this state (during a push action), the head member  21  rotates in the outbound path direction of  FIG. 8A . Moreover, when the operator separates the cleaning element from the optical connector (during a pull action), the insertion section  20  returns to its original position relative to the tool body  10 , and the head member  21  rotates in the return path direction of  FIG. 8A . 
       FIG. 8B  is an explanatory diagram of the trajectory of the cleaning element  3  and the trajectory of the dispensing port  37 A when the head member  21  is rotated during cleaning, in accordance with one or more embodiments of the invention. When the head member  21  rotates about an axis along the front-rear direction, the cleaning element  3  at the pressing face  22  and the dispensing port  37 A also move by rotation about the rotation axis. In  FIG. 8B , the trajectory of the dispensing port  37 A when the head member  21  is rotated is indicated by the diagonal hatching. Moreover, in  FIG. 8B , the trajectory of the cleaning element  3  at the pressing face  22  when the head member  21  is rotated is indicated by the dot pattern hatching. 
     In one or more embodiments, as illustrated in  FIG. 8B , the trajectory of the dispensing port  37 A when the head member  21  is rotated, and the trajectory of the cleaning element  3  at the pressing face  22  when the head member  21  is rotated, overlap with each other. Due to the liquid cleaner  5  being coated onto locations of the cleaning target facing the trajectory of the dispensing port  37 A, as long as there is overlap between the trajectory of the cleaning element  3  and the trajectory of the dispensing port  37 A, the cleaning element  3  can be moistened with the liquid cleaner  5  due to the cleaning element  3  contacting the locations coated with the liquid cleaner  5 . 
     Moreover, in one or more embodiments, as illustrated in  FIG. 8B , the trajectory of the dispensing port  37 A when the head member  21  is rotated, and the trajectory of the cleaning element  3  at the upstream side (at the side near to the supply side insertion hole  22 A) of the pressing face  22  when the head member  21  is rotated, overlap with each other. This approach is adopted because it is effective to moisten the cleaning element  3  at the upstream side when considering that the cleaning element  3  at the pressing face  22  is fed from the upstream side (the supply side insertion hole  22 A side) to the downstream side (the return side insertion hole  22 B side). 
     Moreover, as illustrated in  FIG. 8B , in one or more embodiments, the initial position of the dispensing port  37 A prior to rotation of the head member  21 , and the trajectory of the cleaning element  3  at the upstream side (the side near to the supply side insertion hole  22 A) of the pressing face  22  when the head member  21  is rotated on the outbound path, overlap with each other. The cleaning element  3  at the upstream side (the side near to the supply side insertion hole  22 A) can thereby be moistened with the liquid cleaner  5  partway along the outbound path (during the push action described above), with this being advantageous due to the cleaning element  3  at the upstream side already being in a moistened state at the stage the head member  21  is rotated along the return path. Note that, in cases in which there is no such overlap with the initial position of the dispensing port  37 A—as with the trajectory of the cleaning element  3  at the downstream side in  FIG. 8B —the cleaning element  3  is moistened partway along the return path, which may be disadvantageous in wet cleaning. 
     OTHER EMBODIMENTS 
       FIG. 9A  is a diagram illustrating an internal configuration of a tool body  10  of a cleaning tool  1  in accordance with a third embodiment.  FIG. 9B  is a diagram illustrating an internal configuration of an insertion section  20  of the cleaning tool  1  of the third embodiment. 
     As illustrated in  FIG. 9A , in the third embodiment, a chamber  31  of a liquid supply section  30  is provided on the inside of a case body  11 . An operation section  35  is formed on the outside of the case body  11 , and an operator is able to operate the operation section  35  while holding the tool body  10 . The upstream end of a tube  37  is coupled to a non-illustrated open-close section  33  inside the chamber  31 . The tube  37  is led inside the moving body  13 D, and the tube  37  is led from the rear side of a cylindrical shaped rotating cylinder  15 A of a rotating body  15  up to a leading end cylinder section  253 . The downstream end of the tube  37  configures a dispensing port  37 A that dispenses a liquid cleaner  5 . In the third embodiment as well, the dispensing port  37 A is disposed so as to be able to moisten a cleaning element  3  at a pressing face  22 . 
       FIG. 10A  is a diagram illustrating an internal configuration of a tool body  10  of a cleaning tool  1  in accordance with a fourth embodiment.  FIG. 10B  is a diagram illustrating an internal configuration of an insertion section  20  of the cleaning tool  1  of the fourth embodiment. 
     As illustrated in  FIG. 10A , also in the fourth embodiment, a chamber  31  of a liquid supply section  30  is provided inside a case body  11 . An operation section  35  is formed on the outside of the case body  11 , and an operator is able to operate the operation section  35  while holding the tool body  10 . In the fourth embodiment, a lead-in hole  251 A is formed in a base cylinder section  251  at a location inside the case body  11 , and a tube  37  is led into the lead-in hole  251 A through a gap between the case body  11  and a moving body  13 D, and is led from the lead-in hole  251 A up to a leading end cylinder section  253 . The downstream end of the tube  37  configures a dispensing port  37 A that dispenses a liquid cleaner  5 . In the fourth embodiment as well, the dispensing port  37 A is disposed so as to be able to moisten a cleaning element  3  at a pressing face  22 . 
     As described for the third and fourth embodiments, the tube  37  may be laid inside the cleaning tool  1 . In such cases, the tube  37  is preferably led inside the cylinder body  25  at the inside of the case body  11 . This may enable damage to the tube  37  to be avoided due to the tube  37  not being externally exposed. 
     In one or more embodiments, the cleaning tool  1  includes: the head member  21  to press the cleaning element  3  at the pressing face  22  against the cleaning target (for example, an optical connector); the feed mechanism  13  to supply the cleaning element  3  and collect the cleaning element  3 ; and the liquid supply section  30  to moisten the cleaning element  3  at the pressing face  22  with the liquid cleaner  5 . Such a cleaning tool  1  enables strongly adhered dirt to be easily removed due to being able to implement wet cleaning. 
     In one or more embodiments, the liquid supply section  30  includes the open-close section  33  capable of blocking the flow path of the liquid cleaner  5 , and the liquid cleaner  5  flows along the flow path and is supplied when the open-close section  33  has opened the flow path (see, for example,  FIG. 5A  to  FIG. 5C ). Dripping of the liquid cleaner  5  can be prevented by the open-close section  33  blocking the flow path. 
     In one or more embodiments, the operation section  35  is provided to operate the open-close section  33 . This enables the operator to decide whether or not there is a need to moisten the cleaning element  3 . 
     In one or more embodiments, the cleaning tool  1  includes the tool body  10  and the insertion section  20  that includes the head member  21  and is capable of moving in a predetermined direction (the front-rear direction) relative to the tool body  10 . The open-close section  33  is then opened or closed by relative movement between the tool body  10  and the insertion section  20  during cleaning (when cleaning the cleaning target by moving the tool body  10  and the insertion section  20  relative to each other while pressing the cleaning element  3  at the pressing face  22  against the cleaning target). This enables the open-close section  33  to be opened or closed without providing the operation section  35 , enabling an operator to be prevented from forgetting to moisten the cleaning element  3  during cleaning. 
     In one or more embodiments, a predetermined amount of the liquid cleaner  5  is supplied when the open-close section  33  has opened the flow path. This enables oversupply of the liquid cleaner  5  to be suppressed. 
     In one or more embodiments, the liquid cleaner  5  permeates the cleaning element  3  up to the pressing face  22  when the predetermined amount of the liquid cleaner  5  has been supplied (see, for example,  FIG. 6B ). This enables the end face of the optical connector to be moistened with the liquid cleaner  5  at the stage when the cleaning element  3  has contacted the optical connector during cleaning. 
     In one or more embodiments, L 1  is set less than L 2  (L 1 &gt;L 2 ) wherein L 1  is the length up to the pressing face  22  from the upstream end of the range over which the liquid cleaner  5  has permeated the cleaning element  3  when the predetermined amount of the liquid cleaner  5  has been supplied (see  FIG. 6B ), and L 2  is the length of the cleaning element  3  fed by the feed mechanism  13  during cleaning. Doing so enables dry cleaning (dry wiping) to be performed after wet cleaning has been performed. 
     In one or more embodiments, during cleaning, at the pressing face  22 , a portion of the cleaning element  3  not permeated by the liquid cleaner  5  is pressed against the cleaning target after a portion of the cleaning element  3  permeated by the liquid cleaner  5  has been pressed against the cleaning target. This enables dry cleaning (dry wiping) to be performed after wet cleaning has been performed, enabling residue of the liquid cleaner  5  to be suppressed from remaining on the cleaning target. 
     In one or more embodiments, the liquid supply section  30  includes the dispensing port  37 A that dispenses the liquid cleaner  5  to the cleaning element  3  (see, for example,  FIG. 6A ). This enables the cleaning element  3  to be moisten by directly dispensing the liquid cleaner  5  from the dispensing port  37 A to the cleaning element  3 . 
     In one or more embodiments, the head member  21  includes the guides  211 A at the dispensing port  37 A to guide the cleaning element  3  (see, for example,  FIG. 6A ). This enables spilling of the liquid cleaner  5  to be suppressed by the guides  211 A. 
     In one or more embodiments, the cleaning element  3  is configured in a strip shape. The strip shaped cleaning element  3  absorbs a large amount of liquid cleaner  5 , enabling spilling of the liquid cleaner  5  to be suppressed. 
     In one or more embodiments, the liquid supply section  30  includes the dispensing port  37 A facing the cleaning target (for example, an optical connector) (see, for example,  FIG. 7B ), and the liquid cleaner  5  dispensed from the dispensing port  37 A contacts the cleaning element  3  during cleaning. This enables the cleaning element  3  at the pressing face  22  to be indirectly moistened with the liquid cleaner  5 . 
     In one or more embodiments, the head member  21  is configured so as to rotate during cleaning (see, for example,  FIG. 8A ), and the trajectory of the dispensing port  37 A when the head member  21  rotates, and the trajectory of the cleaning element  3  at a pressing member when the head member  21  rotates, overlap with each other (see, for example,  FIG. 8B ). This enables the cleaning element  3  at the pressing face  22  to be indirectly moistened with the liquid cleaner  5 . 
     In one or more embodiments, the trajectory of the dispensing port  37 A when the head member  21  rotates and the trajectory of the cleaning element  3  at the upstream side of the pressing member when the head member  21  rotates, overlap with each other (see  FIG. 8B ). This is because it is more effective to moisten the cleaning element  3  at the upstream side due to the cleaning element  3  being supplied from the upstream side to the downstream side. 
     In one or more embodiments, the head member  21  is configured so as to perform to-and-fro reciprocating rotation instead of rotating continuously in one direction, and the initial position of the dispensing port  37 A prior to rotation of the head member  21 , and the trajectory of the cleaning element  3  on the upstream side of the pressing member when the head member  21  is rotated during the outbound path, overlap with each other (see  FIG. 8B ). This enables the cleaning element  3  to be moistened with the liquid cleaner  5  on the upstream side (the side in the vicinity of the supply side insertion hole  22 A) partway along the outbound path. 
     One or more embodiments of the invention relate to a cleaning method. In the cleaning method, a feed process is performed to supply the cleaning element  3  and to collect the cleaning element  3 , a moistening process is performed to moisten the cleaning element  3  at the pressing face  22  with the liquid cleaner  5 , and a pressing process is performed to press the moistened cleaning element  3  against the cleaning target (for example, an optical connector) at the pressing face  22 . Such a cleaning method enables strongly adhered dirt to be easily removed due to being able to implement wet cleaning. 
     The foregoing embodiments are for facilitating the understanding of the invention, and are not to be construed as to limit the invention. Needless to say, embodiments of the invention may be modified and/or improved without departing from the invention, and the invention encompasses equivalents thereof. 
     REFERENCE SIGNS LIST 
       1 : cleaning tool;  3 : cleaning element;  5 : liquid cleaner;  10 : tool body;  11 : case body;  11 A: rack;  11 B: spring seat;  11 C: insertion protrusion (rotation mechanism);  13 : feed mechanism;  13 A: supply reel;  13 B: take-up reel;  13 C: pinion;  13 D: moving body;  13 E: coil spring;  15 : rotating body;  15 A: rotating cylinder;  15 B: cam groove (rotation mechanism);  15 C: guide;  15 D: head support;  20 : insertion section;  21 : head member;  211 : head;  211 A: guide;  22 : pressing face;  22 A: supply side insertion hole;  22 B: return side insertion hole;  213 : flange;  215 : base end;  23 : head spring;  25 : cylinder body;  251 : base cylinder section;  251 A: lead-in hole;  253 : leading end cylinder section;  253 A: retention groove;  30 : liquid supply section;  31 : chamber;  33 : open-close section;  35 : operation section;  37 : tube;  37 A: dispensing port.