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Interdental brush and method of producing the sameRelated Patent Categories: Brushing, Scrubbing, And General Cleaning, Implements, Brush Or Broom, Special Work, Tooth Or Nail BrushInterdental brush and method of producing the same description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060179593, Interdental brush and method of producing the same. Brief Patent Description - Full Patent Description - Patent Application Claims
TECHNICAL FIELD [0001] The present invention relates to an interdental brush and a method of producing the same. BACKGROUND OF THE INVENTION [0002] As an interdental brush of this type, there is known one composed of bristles, a wire with which the bristles are twisted, and a handle to which the wire is attached, wherein a coming-off preventing bent portion is formed at the base part of the wire, and mounting of the wire to the handle is realized by insert resin molding (see, for example, Japanese Utility-model Application Laid-open No. 62-174423). [0003] As for insert resin molding, the structure of a molding die is complicated and expensive, so the cost of equipment is high. Further, a work to set a wire to a mold requires time and effort, so it is troublesome. Accordingly, an interdental brush produced by insert resin molding is expensive. [0004] An object of the present invention is to provide cheap interdental brushes and a producing method capable of producing them. DISCLOSURE OF THE INVENTION [0005] An interdental brush according to the present invention comprises: bristles; a wire with which the bristles are twisted; and a handle attached to the wire. The handle consists of a main body and a sub-body. The main body is provided with a longitudinal hole into which a base part of the wire is inserted, and a lateral hole intersecting the longitudinal hole. The base part of the wire is provided with a coming-off preventing bent portion formed to be exposed to the lateral hole. The sub-body is provided with an engagement portion filling the lateral hole so as to surround the periphery of the bent portion. [0006] According to the interdental brush of this invention, it is possible to produce it by simple resin molding without using insert resin molding. Therefore, cheap interdental brushes are provided. [0007] Further, if a part of the surface of the main body is covered with the sub-body, and the discrimination properties of the main body and the sub-body are different to each other, it is possible to add visual appeal. [0008] Further, if the main body and the sub-body are made of synthetic resin, fitting characteristics between resin are high, whereby it is possible to strengthen the bonding power between the main body and the sub-body. [0009] Further, if a difference in discrimination properties results from at least one of color, gloss and material, the difference in discrimination properties can be changed easily. [0010] Further, if the main body comprises a shoulder part, a tail part and a barrel part communicating the shoulder part and the tail part via a low step, the lateral hole is positioned in the barrel part, the sub-body covers the barrel part, and the boundaries between the surfaces of the shoulder part and the tail part and the surface of the sub-body adjacent thereto are flush with each other, it is possible to provide a smooth image in the handle as a whole, which contributes to improving the merchantability. [0011] A method of producing an interdental brush according to the present invention comprises the steps of: forming, by primary resin molding, a main body of a handle having a longitudinal hole and a lateral hole intersecting the longitudinal hole; inserting a base part of a wire, with which bristles are twisted, into the longitudinal hole so as to be exposed to the lateral hole; forming a coming-off preventing bent portion at the base part of the wire via the lateral hole; and forming, by secondary resin molding, a sub-body of the handle such that a part thereof fills the lateral hole so as to surround the periphery of the bent portion. [0012] According to the method of producing an interdental brush of the present invention, it is possible to produce bristles, a wire and an handle in different steps, which enables to produce an interdental brush in simple steps. Therefore, the cost of producing an interdental brush is low. [0013] Further, if the step of forming the bent part is performed by inserting a rod-shaped jig J into the lateral hole and pressing the tip part of the jig J onto a to-be-bent portion of the base part of the wire, a part of the role of the jig for forming the bent portion is taken by the main body, and also forming of the bent part itself is easy. [0014] Further, if the same material is used in the primary resin molding and the secondary resin molding, the material cost can be saved, and also management of the producing steps can be easily carried out. However, different materials may be used in the primary resin molding and in the secondary resin molding. BRIEF DESCRIPTION OF THE DRAWINGS [0015] FIG. 1 is a perspective view of an interdental brush according to the present invention. [0016] FIG. 2 is a longitudinal sectional view taken along the line II-II of FIG. 1. [0017] FIG. 3 is a longitudinal sectional view taken along the line III-III of FIG. 1. [0018] FIG. 4 is an exploded perspective view showing a twisted wire with bristles of the interdental brush and the main body of a handle. [0019] FIG. 5 is a producing process drawing of the interdental brush. BEST MODE FOR CARRYING OUT THE INVENTION Continue reading about Interdental brush and method of producing the same... Full patent description for Interdental brush and method of producing the same Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Interdental brush and method of producing the same patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Interdental brush and method of producing the same or other areas of interest. ### Previous Patent Application: Wrist and forearm support device connectable to a standard paint roller assembly Next Patent Application: Silicone pastry brush Industry Class: Brushing, scrubbing, and general cleaning ### FreshPatents.com Support Thank you for viewing the Interdental brush and method of producing the same patent info. IP-related news and info Results in 0.14209 seconds Other interesting Feshpatents.com categories: Medical: Surgery , Surgery(2) , Surgery(3) , Drug , Drug(2) , Prosthesis , Dentistry 174 |
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