JP5556243B2 - toothbrush - Google Patents

Description

  The present invention relates to a toothbrush in which a suction tube for sucking and removing excess saliva and food residues in the oral cavity is detachable.

  The toothbrush includes a handle portion having a flocking base, a neck portion, and a grip portion, and a brush portion formed by planting a hair bundle on the flocking table, and the handle portion is extended from the proximal end portion of the grip portion to the middle portion of the flocking table. A communication passage extending along the length direction is formed in the handle portion, and an end portion of the communication passage is connected to a suction device installed in a hospital or the like with a tube, and excess saliva or food in the oral cavity is passed through the communication passage and the tube. There has been proposed a toothbrush capable of brushing teeth with a brush portion while removing the residue by suction (see, for example, Patent Document 1).

  However, in the toothbrush described in Patent Document 1, saliva and food residue in the oral cavity are sucked and removed through the communication passage formed in the handle portion, so that the communication passage formed in the handle portion of the toothbrush is saliva and food residue. It will be dirty. However, since the inner surface of the communication path is difficult to clean in the handle portion, it is necessary to configure the toothbrush in the end, resulting in an economical burden on the user and wasteful use of resources effectively. There were many.

  Therefore, a handle portion having a flocking base, a neck portion, and a grip portion, and a brush portion in which a hair bundle is planted on the flocking table are provided, and attachment holes are respectively formed through the base end portion and the distal end portion of the grip portion. The suction catheter is inserted into the attachment hole on the proximal end side from the front side to the rear side, and then inserted into the attachment hole on the distal end side from the rear side to the front side for suction. The tip of the catheter for use is fixed at the center of the flocked portion, and the suction catheter between the flocked portion and the attachment hole on the tip side is arranged and fixed along the front side of the neck portion of the toothbrush, for suction between the two attachment holes. A catheter fixed with a binding band so as to be disposed and fixed along the rear surface side of the grip portion has been proposed and put to practical use (for example, see Patent Document 2).

  In addition, as an intraoral cleaning tool suitable for cleaning the oral cavity of a care recipient such as a bedridden elderly person, a brush body configured by arranging a number of hairs in a spiral shape on a wire rod is looped or looped. It is formed in an arc shape close to the end, and both ends of the wire are attached to the tip of the grip handle, the oral mucosa is scraped with the brush body, and food residues, saliva, wrinkles, etc. are placed in the center surrounded by the wire. Intraoral cleaning tools that are designed to accumulate are known. Then, in this intraoral cleaning tool, a groove for positioning the suction catheter is formed on the front side of the grip handle, an attachment hole is formed at the proximal end of the grip handle, The suction catheter is pierced from the side, the suction catheter is disposed along the groove, and the distal end of the suction catheter is positioned at a substantially central portion surrounded by the wire, and the distal end of the grip handle or the A holding claw for holding the suction catheter in the groove is projected inwardly at the lip of the groove near the tip, and the suction catheter is fixed to the grip handle by the mounting hole and the holding claw. The thing is also proposed (for example, refer patent document 3).

JP 2006-174857 A Design Registration No. 1147565 JP 2005-137655 A

  By the way, also in the intraoral cleaning tool of patent document 3, since it is necessary to let the catheter for suction pass through one attachment hole, the problem that attachment / detachment work of the catheter for suction cannot be solved completely cannot be solved. Met. Moreover, the intraoral cleaning tool described in Patent Document 3 is intended to be used by a care recipient such as a bedridden elderly person, and the middle part of the suction catheter is fixed to the grip handle with a holding nail. The tip of the suction catheter is not fixed to the grip handle, and when a healthy person operates, there is a problem that the suction catheter falls off the grip handle due to an external force applied to the suction catheter. In addition, the grip handle is formed by injection molding using a synthetic resin material. However, when the holding claw is formed by forcibly removing, the holding force of the suction catheter cannot be sufficiently secured, and When the holding claw is molded using a movable core or the like, there is a problem that the manufacturing cost of the mold becomes high.

  An object of the present invention is to provide a toothbrush that can easily attach and detach the suction tube to and from the toothbrush and can form a holding claw that firmly holds the suction tube against the handle portion without increasing the manufacturing cost of the mold. Is to provide.

A toothbrush according to the present invention is a toothbrush comprising a handle portion having a flocking table, a neck portion, and a grip portion, and a brush portion formed by planting a hair bundle on the flocking table, on the rear side of the handle portion. A fitting groove into which a suction tube for intraoral suction is fitted is formed along the length direction of the handle portion from the distal end portion to the proximal end portion of the handle portion, and at least the distal end portion of the fitting groove. A holding claw for holding the suction tube in the fitting groove is formed at the opening edge at the base end portion, and an insertion hole penetrating the flocking table in the front-rear direction is formed. The suction tube is formed in the insertion hole. The distal end portion of the suction tube is inserted into the insertion hole and guided to the proximal end portion side of the handle portion at the rear edge of the insertion hole. A surface is formed . As the suction tube, it is preferable to use a medical catheter or tube, but it is also possible to use a tube other than the medical tube.

  In this toothbrush, the suction tube is fitted in the fitting groove, and the suction tube is held in the fitting groove by the holding claws, so that the suction tube is attached to the handle portion of the toothbrush, and the suction tube is in this state. Is connected to a suction device, and the tooth is brushed with a toothbrush while removing excess saliva and food residues in the oral cavity with a suction tube. After brushing, the toothbrush is washed with water and used repeatedly, and the suction tube is replaced with a new one each time, or after being used a plurality of times and then replaced with a new one. Thus, the toothbrush can be used repeatedly, which is preferable because it can reduce the user's economic burden and can effectively use resources.

  Further, in this toothbrush, the suction tube is provided in at least the front end portion and the base end portion of the fitting groove because more than half of the suction tube is fitted in the fitting groove, and external force in the direction of dropping from the fitting groove is difficult to act. Since it is held by the holding claws, it is possible to prevent the distal end portion and the proximal end portion of the suction tube from falling out of the fitting groove. Further, at the holding claw forming position, the suction tube is detachably fitted into the fitting groove through a pair of holding claws at the lip of the fitting groove by elastic deformation of the suction tube itself or elastic deformation of the holding claw. Since it is held, it can be easily attached to the toothbrush with a simple operation as compared with a case where the suction tube is fixed to the toothbrush through the attachment hole. In addition, the suction tube in the middle portion of the fitting groove can be gripped by the hand gripping the grip portion so as not to fall off together with the grip portion. The holding strength of the suction tube with respect to the handle portion can be easily adjusted by adjusting the distance between the one holding claws arranged facing each other or adjusting the length of the holding claws.

Furthermore , since the fitting groove is formed on the rear surface side of the handle portion, it is preferable because the following operational effects can be obtained . That is, it is possible to form a fitting groove on the front side of the handle part, but when the tip part of the suction tube is arranged in the brush part, an insertion hole is formed in the flocking table, and the tip of the suction tube is formed. Since the tip of the suction tube can be placed in the brush part through the insertion hole from the rear surface side of the flocking table, a fitting groove is formed on the front side of the handle part, and along the fitting groove Compared with the case where the suction tube is arranged and the tip of the suction tube is inserted into the brush portion, it is preferable because the amount of hair bundle planting can be set larger. Also, if a fitting groove is provided on the front surface side, the suction tube can easily come into contact with the teeth, and the suction tube can easily fall off from the handle portion. Therefore, a fitting groove should be formed on the rear surface side of the handle portion. Is preferred.

Furthermore, the forming a passage therethrough flocking stand in the front-rear direction, since the Do allow inserting the distal end portion of the suction tube to the insertion hole, not drop the leading end of the suction tube from the flocking stage The attachment strength of the suction tube to the handle portion can be improved. And since only the front-end | tip part of the tube for suction should just be inserted in the penetration hole, the attachment or detachment workability | operativity of the tube for suction with respect to a toothbrush is hardly reduced.
Further, a guide surface for guiding the distal end portion of the suction tube mounted in the fitting groove into the insertion hole is formed on the proximal end side of the handle portion at the rear edge of the insertion hole. The tip of the suction tube can be guided into the insertion hole so that the suction tube is not bent. That is, in order to attach the tip of the suction tube fitted in the fitting groove to the insertion hole, it is necessary to switch the direction of the suction tube by about 90 ° between the fitting groove and the insertion hole. Therefore, it is preferable to form the guide surface as in the present invention and guide the tip of the suction tube into the insertion hole so that the suction tube is not bent.

Here, it is also a preferred embodiment to form a protrusion pressed against the outer peripheral surface of the suction tube on the inner surface of at least one of the fitting groove and the insertion hole. In this case, the protrusion that presses against the outer peripheral surface of the suction tube can more effectively prevent the suction tube from falling off the fitting groove or the insertion hole. When forming such a protrusion, it is preferable to form the protrusion along the depth direction of the fitting groove or the insertion hole. As the protrusion, for example, it is possible to form an annular protrusion in the middle in the depth direction with respect to the inner peripheral surface of the insertion hole, but the mold structure becomes complicated due to the removal of the handle part. The protrusion is preferably formed along the depth direction of the fitting groove or the insertion hole.

  Setting the fitting depth of the suction tube with respect to the fitting groove so that the surface of the suction tube is smoothly along the outer surface of the handle portion in a state in which the suction tube is fitted in the fitting groove. Is also a preferred embodiment. With this configuration, the suction tube fitted in the fitting groove during brushing can be less likely to come into contact with other objects such as teeth, and even when contacted with other objects such as teeth This is preferable because the tube can be effectively prevented from falling off.

  A holding claw is formed by forcibly removing the fitting groove in the neck, and a holding claw is formed by providing a fitting hole in the fitting groove at the base of the grip part, or both side walls of the fitting groove are formed thin. A holding nail can also be formed by forcibly removing it. In this case, the suction tube can be held in the fitting groove so as not to easily fall off by the holding claws provided at the base portion of the neck portion and the grip portion. The holding claw on the neck can be formed at the same time as the mounting hole is formed by forming a mounting hole connected to the fitting groove, but the neck has a smaller diameter than the grip part and the side walls on both sides of the holding groove. Since the portion is thin, it is possible to easily remove the holding claw by forcibly removing it while elastically deforming the side wall portion.

  According to the toothbrush of the present invention, the suction tube is attached to the handle portion of the toothbrush by fitting the suction tube into the fitting groove and holding the suction tube in the fitting groove with the holding claws. Therefore, after brushing, the toothbrush is washed with water and used repeatedly, and the suction tube is replaced with a new one each time, or after being used a plurality of times and then replaced with a new one. Thus, the toothbrush can be used repeatedly, which is preferable because it can reduce the user's economic burden and can effectively use resources.

Further, in this toothbrush, the suction tube is provided in at least the front end portion and the base end portion of the fitting groove because more than half of the suction tube is fitted in the fitting groove, and external force in the direction of dropping from the fitting groove is hardly applied. Since it is held by the holding claws, it is possible to prevent the distal end portion and the proximal end portion of the suction tube from falling out of the fitting groove. Further, at the holding claw forming position, the suction tube is detachably fitted into the fitting groove through a pair of holding claws at the lip of the fitting groove by elastic deformation of the suction tube itself or elastic deformation of the holding claw. Since it is held, it can be easily attached to the toothbrush with a simple operation as compared with a case where the suction tube is fixed to the toothbrush through the attachment hole. In addition, the suction tube in the middle portion of the fitting groove can be gripped by the hand gripping the grip portion so as not to fall off together with the grip portion.
Furthermore, since the fitting groove is formed on the rear surface side of the handle portion, it is preferable because the following operational effects can be obtained. That is, it is possible to form a fitting groove on the front side of the handle part, but when the tip part of the suction tube is arranged in the brush part, an insertion hole is formed in the flocking table, and the tip of the suction tube is formed. Since the tip of the suction tube can be placed in the brush part through the insertion hole from the rear surface side of the flocking table, a fitting groove is formed on the front side of the handle part, and along the fitting groove Compared with the case where the suction tube is arranged and the tip of the suction tube is inserted into the brush portion, it is preferable because the amount of hair bundle planting can be set larger. Also, if a fitting groove is provided on the front surface side, the suction tube can easily come into contact with the teeth, and the suction tube can easily fall off from the handle portion. Therefore, a fitting groove should be formed on the rear surface side of the handle portion. Is preferred.
Furthermore, an insertion hole that penetrates the flocking table in the front-rear direction is formed, and the tip of the suction tube can be inserted into the insertion hole so that the tip of the suction tube does not fall off the flocking table. The attachment strength of the suction tube to the handle portion can be improved. And since only the front-end | tip part of the tube for suction should just be inserted in the penetration hole, the attachment or detachment workability | operativity of the tube for suction with respect to a toothbrush is hardly reduced.
Further, a guide surface for guiding the distal end portion of the suction tube mounted in the fitting groove into the insertion hole is formed on the proximal end side of the handle portion at the rear edge of the insertion hole. The tip of the suction tube can be guided into the insertion hole so that the suction tube is not bent. That is, in order to attach the tip of the suction tube fitted in the fitting groove to the insertion hole, it is necessary to switch the direction of the suction tube by about 90 ° between the fitting groove and the insertion hole. Therefore, it is preferable to form the guide surface as in the present invention and guide the tip of the suction tube into the insertion hole so that the suction tube is not bent.

Front view of the handle Bottom view of the handle Rear view of handle Toothbrush vertical section (A)-(g) is sectional drawing in the AA line-GG line of FIG. 1, respectively. (A)-(g) is sectional drawing at the time of the handle | steering-wheel molding in the AA line-GG line of FIG. 1, respectively. (B) is a sectional view taken along line VII-VII of (a) of a toothbrush of another configuration.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In the present embodiment, the description will be made by defining the flocking table side of the toothbrush as the left side and the planting side of the hair bundle as the front side.

  As shown in FIG. 1 to FIG. 5, the toothbrush 1 is provided at a grip part 2 for hand-held brushing operation, a neck part 3 extending leftward from the grip part 2, and a left end part (tip part) of the neck part 3. A neck portion 3 having an elongated rod-like handle portion 5 having a hair transplant table 4 and a brush portion 7 in which hair bundles 6 made of a plurality of filaments are planted in a predetermined arrangement on the hair transplant table 4 of the handle portion 5. A fitting groove 8 into which the suction tube 20 for intraoral suction is fitted is formed along the length direction of the handle portion 5 from the vicinity of the left end of the handle portion 5 to the right end portion (base end portion) of the grip portion 2. A holding claw 9 for holding the suction tube 20 in the fitting groove 8 is formed at the opening edge at least at the left end portion and the right end portion of the fitting groove 8.

  The suction tube 20 is composed of a catheter having a known configuration that can be connected to a suction device installed in a hospital or the like, and a connector 22 to the suction device is fixed to the end of a flexible pipe member 21. However, as the suction tube 20, in addition to the medical catheter, a medical tube or other tube can be used.

  As a material of the filament constituting the hair bundle 6, any material made of any material can be adopted as long as it has physical properties that can be used as the toothbrush 1. For example, nylon, polyester, polyolefin, etc. Resin material can be used. The cross-sectional shape and size of the filament can be arbitrarily set according to the purpose of use, and for example, those having a polygonal cross-sectional shape such as a circle, an ellipse, a triangle, or a quadrangle can be adopted. Further, the tip shape of the filament can also be formed in an arbitrary shape such as a spherical shape, a hemispherical shape, or a sharp shape. Further, the hair bundle 6 can be a mixture of filaments of different materials in a specific ratio, or a mixture of a plurality of types of filaments having different cross-sectional sizes and cross-sectional shapes. The number of filaments constituting the hair bundle 6 can be arbitrarily set according to the purpose of use, and the hair bundles 6 having different numbers of filaments can be mixed and planted.

  As a method for planting the hair bundle 6 with respect to the hair transplant table 4, a known method can be employed. For example, when forming the handle portion 5, a bottomed flock hole is formed in the flocking table 4, and a hair bundle 6 is planted using a flat wire in the flocked hole, or the flocking table 4 is divided into two in the front and rear directions. After inserting the hair bundle 6 into the through hole 12 formed in the front flocking table 4, the base end of the hair bundle 6 is melted by heating means to fuse the filaments together, and then the front flocking table 4 is A method of superimposing and joining the side flocking tables 4 can be suitably employed.

  The number and arrangement of the bristles 6 can be arbitrarily set according to the site to be brushed. For example, in the general toothbrush 1 intended to brush the entire oral cavity, the number of bristles 6 is, for example, It is set to 15-30, and the hair bundles 6 are arranged in a circular shape, an oval shape, an oval shape or the like in a front view, and the object is to brush details such as the interdental and gingival boundaries. In the detailed toothbrush, the number of bristle bundles 6 is set to 1 to 5, and the bristle bundles 6 are arranged in a dotted or linear shape in a front view.

  As the handle portion 5, one integrally molded by injection molding using a synthetic resin material can be suitably used. However, a primary molded product is formed by injection molding or the like, the primary molded product is set in another mold, and a handle portion 5 in which a non-slip portion or a finger hold portion made of, for example, an elastomer is secondarily formed is employed. You can also. Examples of the synthetic resin material constituting the handle portion 5 include polypropylene, polyethylene, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polytrimethyl terephthalate, polycarbonate, polyoxymethylene, styrene / acrylonitrile resin, acrylonitrile / butadiene / styrene resin. It is possible to use hard synthetic resin materials such as cellulose propionate, polyamide, polymethyl methacrylate, and polyarylate. In particular, from the viewpoint of hygiene management, it is preferable to use a synthetic resin material excellent in heat resistance that can be boiled and disinfected.

  The flocking table 4 is formed in a flat plate shape of a front shape such as a rectangle or an oval shape with rounded corners so that a brushing operation in the oral cavity can be smoothly performed. An insertion hole 10 having substantially the same diameter as the pipe member 21 of the suction tube 20 is formed in the central portion of the flocking table 4 so as to penetrate therethrough, and the distal end portion of the suction tube 20 can be inserted and held in the insertion hole 10. ing. However, it is also possible to omit the insertion hole 10 and arrange the tip of the suction tube 20 on the tip of the neck 3 or the rear surface side of the flocking table 4.

  The neck portion 3 is formed in a linear or curved elongated bar shape extending from the flocking table 4 to the handle portion 5 so that the shape of the neck portion 3 can satisfy the functions such as the operability of the brush portion 7 and the optimization of the brushing pressure on the teeth. And dimensions are set. Further, the grip portion 2 can be arbitrarily formed as long as the grip portion 2 can be gripped by hand and can be easily brushed by the toothbrush 1, and a grip portion provided with a non-slip portion or a finger hold portion can also be adopted.

  A fitting groove 8 is continuously formed along the length direction of the handle portion 5 from the vicinity of the left end of the neck portion 3 to the right end portion of the grip portion 2 on the rear surface side of the neck portion 3 and the grip portion 2. A suction tube 20 for intraoral suction is fitted and held in the groove 8. The groove width of the fitting groove 8 is set to be approximately the same as the diameter of the suction tube 20, and if the depth of the fitting groove 8 is too shallow, the suction tube 20 protrudes out of the fitting groove 8 with teeth or the like. May cause the suction tube 20 to fall out of the fitting groove 8, and if it is too deep, the strength of the neck portion 3 may be reduced or the cleaning work for foreign matter clogged in the fitting groove 8 will be complicated. Therefore, the suction tube 20 is set to a depth that is greater than the radius of the suction tube 20 and less than the diameter. The suction tube 20 protrudes outward from the fitting groove 8 into the fitting groove 8. Mated and held. The fitting groove 8 can be formed on the front side of the neck portion 3 and the grip portion 2. In this case, the insertion hole 10 is omitted, and the distal end portion of the suction tube 20 is inserted into the brush portion 7 or disposed near the brush portion 7.

  In order to hold the suction tube 20 in the fitting groove 8, three kinds of holding claws 9A, 9B, and 9C having different molding methods are formed at the rim of the fitting groove 8, and the suction tube 20 has a neck portion. 4 sets of one first holding claw 9 </ b> A formed on 3, two second holding claws 9 </ b> B formed on both ends of the grip part 2, and one third holding claw 9 </ b> C formed on the center part of the grip part 2 The holding claw 9 is fitted and held in the fitting groove 8.

Next, a method for forming these three types of holding claws 9A, 9B, 9C will be described while explaining the structure of a pair of molds 30, 31 for forming the handle portion 5.
As shown in FIGS. 6A to 6G, the molds 30 and 31 are formed with a molding space 32 that matches the shape of the handle portion 5 in a state where the molds are closed, and a synthetic resin material is formed in the molding space 32. Is formed so that the handle portion 5 can be molded.

  As shown in FIG. 6A, a mounting hole forming portion 33 for forming the insertion hole 10 is formed in a protruding shape upward in the portion of the lower mold 31 where the flocking table 4 is formed. 6 (b) to 6 (d) and 6 (f), a fitting groove 8 is formed in a portion of the lower mold 31 where the neck portion 3 and the grip portion 2 are formed. The fitting groove forming portion 34 is formed so as to protrude upward.

  In order to mold the first holding claw 9A to be formed on the neck portion 3, as shown in FIG. 6C, the base of the fitting groove forming portion 34 has a claw forming groove 35 having a shape suitable for the first holding claw 9A. It is formed corresponding to the first holding claw 9A. And since the side wall part 11 of the both sides of the fitting groove | channel 8 is comprised comparatively thinly, the 1st holding claw 9A is comprised so that it may demold by forcibly removing, making the side wall part 11 elastically deformed.

  In order to form the second holding claw 9 </ b> B at the distal end portion and the proximal end portion of the grip portion 2, a through hole forming portion 36 for forming the through hole 12 is formed in the upper mold 30 so as to correspond to the through hole 12. Claw forming grooves 37 for forming the upper portion of the second holding claw 9B are formed on both side edges of the lower end portion of the through hole forming portion 36, and the second holding claw 9B is formed on the mold 30. , 31 is opened so that the mold can be removed without excessive force. That is, in the 2nd holding claw 9B, since the both sides of the fitting groove 8 become thick, it becomes difficult to remove the mold by force removal similarly to the first holding claw 9A. Therefore, although the strength rigidity and designability of the grip part 2 are somewhat lowered, by providing the through-hole forming part 36, the grip part 2 can be removed without forcibly removing it.

  In order to form the third holding claw 9C at the center of the grip part 2, a claw forming groove 38 having a shape suitable for the third holding claw 9C is formed in the base of the fitting groove forming part 34 so as to correspond to the third holding claw 9C. A groove forming part 39 for forming the groove 13 is formed on the both sides of the fitting groove forming part 34 of the lower mold 31 so as to protrude upward corresponding to the groove 13. This groove portion forming portion 39 is configured to form the thin side wall portions 14 on both sides of the fitting groove 8. The third holding claw 9 </ b> C is configured so that it can be removed by forced removal in the same manner as the first holding claw 9 </ b> A while elastically deforming the side wall portion 14. Although it is possible to form a second holding claw 9B instead of the third holding claw 9C at the center of the grip part 2, the third holding claw 9C can be formed on the front side of the grip part 2. The flat surface 15 for printing a company name, a product name, etc. can be formed.

  The holding claws 9 can be formed in a face-to-face manner at the rim of the fitting groove 8 or can be formed in a staggered manner in the length direction of the handle portion 5. The protruding amount of the holding claw 9 is set to a protruding amount that allows the suction tube 20 to be attached to and detached from the fitting groove 8 while elastically deforming the holding claw 9 and the suction tube 20. The length of the holding claw 9 can be arbitrarily set. However, if the length is too short, the holding force of the suction tube 20 cannot be sufficiently obtained. If the length is too long, the first holding claw 9A has a demolding failure. 2 The length of the through-hole 12 is increased in the holding claw 9, and the strength and the appearance of the handle portion 5 are reduced. In the third holding claw 9C, the demolding failure and the appearance are reduced. It is preferable to set to. The protruding amount and the length of the holding claw 9 can be set to be the same, or can be set to be different.

  The holding claws 9A, 9B, 9C can be used in any combination of one or more, and the number of holding claws 9A, 9B, 9C and the arrangement position in the length direction can be arbitrarily set. However, in the case where the through hole 12 is formed in the neck portion 3 to form the second holding claw 9B, it is difficult to sufficiently secure the strength of the neck portion 3 unless the outer shape of the neck portion 3 is set large. In addition, when the groove portion 13 is formed on the neck portion 3 to form the third holding claw 9C, the outer shape of the neck portion 3 is increased. Therefore, the first holding claw 9 is preferably formed on the neck portion 3. Further, the second holding claw 9B can be formed at the center of the grip part 2, but by forming the third holding claw 9C, the surface side of the grip part 2 is configured as a flat surface 15, The flat surface 15 is preferable because it can be used as a display surface for displaying a company name or a product name. Further, it is possible to form the third holding claw 9C in place of at least one second holding claw 9B at both ends of the grip portion 2, but the number of forcibly removed portions increases, and the handle portion 5 is not removed properly. Therefore, it is preferable to provide the second holding claw 9B. However, although both ends of the grip portion 2 are configured by the second holding claws 9B, the central portion and the base end portion of the grip portion 2 are configured by the second holding claws 9B, and the distal end portion is configured by the third holding claws 9C. It is also possible to configure the distal end portion and the center portion of the grip portion 2 with the second holding claw 9B and configure the base end portion with the third holding claw 9C.

  When using the toothbrush 1, the tip of the suction tube 20 is inserted and held from the rear surface side of the flocking table 4 to the insertion hole 10, and the suction tube 20 is inserted into the fitting groove 8 in order from the tip side. The suction tube 20 is attached to the handle portion 5 of the toothbrush 1 by holding the suction tube 20 in the fitting groove 8 with the holding claw 9, and the suction tube 20 is connected to the suction device in this state. Then, the teeth are brushed with the toothbrush 1 while removing excess saliva and food residues in the oral cavity with the suction tube 20. Then, after brushing, the toothbrush 1 is washed with water and used repeatedly, and the suction tube 20 is replaced with a new one each time, or is used a plurality of times and then replaced with a new one. Thus, since the toothbrush 1 can be used repeatedly, a user's economical burden can be reduced and resources can be used effectively.

  In the toothbrush 1, more than half of the suction tube 20 is fitted in the fitting groove 8, and an external force in a direction of dropping from the fitting groove 8 is difficult to be applied. Since it is held by the holding claw 9 provided at the end, it is possible to prevent the distal end portion and the base end portion of the suction tube 20 from falling off the fitting groove 8. Further, the suction tube 20 in the middle portion of the fitting groove 8 can be gripped so as not to fall off together with the grip portion 2 by a hand gripping the grip portion 2. Further, the suction tube 20 is fitted between the pair of holding claws 9 at the lip of the fitting groove 8 by the elastic deformation of the suction tube 20 itself or the elastic deformation of the holding claw 9 at the position where the holding claw 9 is formed. Since the fitting groove 8 is detachably fitted and held, it can be easily attached to the toothbrush 1 with a simple operation.

  In addition, like the handle portion 5A of the toothbrush 1A shown in FIG. 7, a protrusion 40 extending along the depth direction (front-rear direction) of the insertion hole 10 is formed on the inner peripheral surface of the insertion hole 10 in the circumferential direction. In the state where the tip of the suction tube 20 is fitted into the insertion hole 10, the protrusion 40 is configured to be pressed against the outer peripheral surface of the suction tube 20, or the length of the fitting groove 8 is A projection 41 extending along the depth direction (front-rear direction) is formed in the middle portion with a set interval, and the suction tube 20 is fitted in the fitting groove 8 on the outer peripheral surface of the suction tube 20. The protrusion 41 is configured to be in pressure contact, or the distal end portion of the suction tube 20 mounted in the fitting groove 8 is inserted into the insertion hole on the proximal end side of the handle portion 5A on the rear edge of the insertion hole 10. 10 can be formed as a guide surface .

  When such protrusions 40 and protrusions 41 are formed, the protrusions 40 and protrusions 41 that are in pressure contact with the outer peripheral surface of the suction tube 20 can more effectively remove the suction tube 20 from the insertion hole 10 and the fitting groove 8. It becomes possible to prevent. The number of the protrusions 40 and 41 can be set arbitrarily. Moreover, although the cross-sectional shape of protrusion 40,41 can be set arbitrarily, in order to bite into the outer peripheral surface of the suction tube 20, it is preferable to form in cross-sectional semicircle or a triangle. Further, when the guide surface 42 is formed, the distal end portion of the suction tube 20 can be guided into the insertion hole 10 so that the suction tube 20 is not bent between the fitting groove 8 and the insertion hole 10. The guide surface 42 can be formed into a tapered surface shape or a smooth curved surface shape by rounding the edge of the rear surface side of the insertion hole 10 or by forming a rounded surface shape.

  In this embodiment, the suction tube 20 is held by the handle portion 5 with the insertion hole 10 and the holding claw 9, but it is possible to hold the suction tube 20 with only the holding claw 9, or a rubber ring or the like is used together. Then, the suction tube 20 can be held by the handle portion 5. When a rubber ring is used in combination, a groove part for fitting and holding the rubber ring may be formed on the outer peripheral part of the handle part 5 in correspondence with the mounting position of the rubber ring.

DESCRIPTION OF SYMBOLS 1 Toothbrush 2 Grip part 3 Neck part 4 Flocking table 5 Handle part 6 Hair bundle 7 Brush part 8 Fitting groove 9 Holding claw 9A Holding claw 9B Holding claw 9C Holding claw 10 Insertion hole 11 Side wall part 12 Through-hole 13 Groove part 14 Side wall part 15 Flat surface 20 Suction tube 21 Pipe member 22 Connector 30 Mold 31 Mold 32 Molding space 33 Mounting hole molding part 34 Fitting groove molding part 35 Claw molding groove 36 Through hole molding part 37 Claw molding groove 38 Claw molding groove 39 Groove forming part 1A Toothbrush 5A Handle part 40 Projection 41 Projection 42 Guide surface

Claims (5)

A toothbrush comprising a handle portion having a flocking table, a neck portion, and a grip portion, and a brush portion formed by planting a hair bundle on the flocking table,
On the rear surface side of the handle part, a fitting groove is formed in which a suction tube for intraoral suction is fitted along the length direction of the handle part from the distal end part to the proximal end part of the handle part.
A holding claw for holding the suction tube in the fitting groove is formed at an opening edge at least at the distal end portion and the proximal end portion of the fitting groove ,
Forming an insertion hole that penetrates the flocking table in the front-rear direction, and inserting the tip of the suction tube into this insertion hole,
On the base end side of the handle portion at the rim on the rear surface side of the insertion hole, a guide surface for guiding the distal end portion of the suction tube mounted in the fitting groove into the insertion hole was formed .
A toothbrush characterized by that. The fitting groove and the insertion hole of claim 1 Symbol placement of the toothbrush forming a projection which is pressed against the outer circumferential surface of the suction tube to at least one of the inner surface. The toothbrush according to claim 2, wherein the protrusion is formed along a depth direction of the fitting groove or the insertion hole. The fitting depth of the suction tube with respect to the fitting groove is set so that the surface of the suction tube is smoothly along the outer surface of the handle portion in a state in which the suction tube is fitted in the fitting groove. The toothbrush of any one of claim | item 1 -3 . A holding claw is formed by forcibly removing the fitting groove in the neck, and a holding claw is formed by providing a through hole in the fitting groove at the base of the grip part, or both side walls of the fitting groove are formed thin. The toothbrush of any one of Claims 1-4 which formed the holding nail | claw by forcibly removing.

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