A retractable built-in interdental brush includes a built-in interdental brush, a retractable mechanism, and a handle. The built-in interdental brush is connected to the retractable mechanism. By driving the retractable mechanism, the built-in interdental brush can be driven to extend from the handle to clean a gap between teeth. After use, the built-in interdental brush retracts into an accommodation space of the handle through the retractable mechanism, so that the handle can form a compact instrument box, which is very convenient to carry. An end surface of a delivery device of the built-in interdental brush is an inclined surface and is at an angle β to an axial direction of the retractable built-in interdental brush is, where the angle β is less than 90°.

TECHNICAL FIELD

The present application relates to a tool for oral cavity cleaning, and in particular, to a built-in interdental brush for cleaning a gap between teeth.

BACKGROUND

Due to reasons such as aging, pathology, and the like, gingival atrophy is easily caused, and a gap between teeth is easily expanded, thereby causing food residues. If the residues are not cleaned in time, not only oral odor may be generated, but also various dental diseases, oral diseases, and especially periodontitis are easily caused.

In view of this situation, various interdental brushes (or referred to as interdental brushes) have been developed on the market for users to choose. Although there are various products with different structures and specifications on the market, the existing products are generally difficult to be aligned with a gap between teeth and observe the gap between teeth. Moreover, the product is inconvenient to carry when the user goes out, and it is inconvenient to store after use. Especially, when a gap between a third molar and a second molar, or a gap between the second molar and a first molar, or a gap between the first molar and the second molar is cleaned, because a position of the gap between the teeth to be cleaned is located deep in an oral cavity, a brush body of the interdental brush in the prior art usually adopts a brush structure in which a metal wire is attached to a fiber made of a high polymer material. Therefore, the metal wire easily stabs gingival tissue during operation by feeling.

Due to the disadvantage that the interdental brush is difficult to enter the gap between teeth, easily stabs the gums, and is inconvenient to carry and use during cleaning the gap between the molars by the interdental brush of the prior art, the applicant has applied for “Retractable Interdental Brush” (application No.: 201811648006.4), to improve the existing interdental brush. This application is a further improvement to the delivery device of the above patent.

SUMMARY

The retractable built-in interdental brush of the present application has a special inclined surface design on the end surface of the delivery device, and the inclined surface can better position the gap between the teeth during use. When the interdental brush is pushed and pulled, the inclined surface can be well embedded in the gap between the teeth and is not easy to slip off, and the positioning is more convenient and stable.

The retractable built-in interdental brush of the present application is provided. A retractable built-in interdental brush900includes a built-in interdental brush101, a retractable mechanism200, and a handle300. The handle300includes an accommodation space31. The built-in interdental brush101extends from or retracts into the accommodation space31of the handle300through the retractable mechanism200. An end surface12-11of a delivery device12of the built-in interdental brush101is an inclined surface and is at an angle β to an axial direction of the retractable built-in interdental brush900.

The retractable built-in interdental brush of the present application can clean a gap between teeth when the built-in interdental brush101is pushed out of the handle300through the retractable mechanism200. When the retractable mechanism200is used to retract the built-in interdental brush101into the accommodation space31of the handle300, the handle300may form a compact instrument box, which is very convenient to carry.

The inclined surface design of the end surface12-11of the delivery device12can better position the gap between the teeth. When the interdental brush is pushed and pulled, the end surface12-11with the inclined surface design can be well embedded in the gap between the teeth and is not easy to slip off, and the positioning is more convenient and stable. An outlet of an elbow12-1at a front end of the delivery device12is pushed against the gap between teeth to be cleaned to push a brush body11, and a working portion11-1of the brush body11extends from the elbow12-1and enters the gap between teeth, thereby resolving a problem well that the existing interdental brush easily stabs gingival tissues due to a difficulty of alignment to the gap between teeth.

Further, the angle β is less than 90°.

A preferred range of the angle β is 5° to 50°. The angle β is an acute angle less than 90°, especially an acute angle between 5° and 50°. In this way, an acute taper can be formed on an upper part of the end surface12-11, and a position of a tip can just be embedded in the gap between the teeth. In addition, due to the acute angle, a lower part will not block the movement of the brush body11, and the use process is very convenient.

The built-in interdental brush101includes a brush body11and the delivery device12. The brush body11is movably built in the elbow12-1at the front end of the delivery device12. The end surface12-11is located at an outlet end of the elbow12-1. A working portion11-1of the brush body11may extend from or retract into the elbow12-1under the action of external force. During use, the brush body11may be first retracted into the elbow12-1at the front end of the delivery device12, the outlet of the elbow12-1at the front end of the delivery device12is pushed against the gap between teeth to be cleaned to push the brush body11, and the working portion11-1of the brush body11extends from the elbow12-1and enters the gap between teeth, thereby resolving a problem well that the existing interdental brush easily stabs gingival tissues due to a difficulty of alignment to the gap between teeth.

The brush body11is made of an elastic material. The elastic material is selected from an elastic polymer material or an elastic metal material. The brush body11can be mounted in the elbow12-1after being elastically deformed. When the brush body11extends from the elbow12-1, the brush body11can be restored to the original shape again.

The brush body11may be linear. When the brush body11extends from the elbow12-1, the brush body11can be restored or basically restored to the linear shape again. The brush body11may also be an arc-shaped brush body. When the brush body11extends from the elbow12-1, the brush body11has an arc shape similar to that of an outer contour of the tooth.

In actual application, a fiber or a protrusion11-11of the working portion11-1of the brush body11may be made of the elastic polymer material, while a connecting body11-2of the brush body11is made of the elastic metal material. In the process of injection molding in a metal mold, the connecting body11-2made of the elastic metal material and the fiber or the protrusion11-11made of the elastic polymer material are formed into a whole to form the brush body11. In this way, the built-in interdental brush with a composite structure not only ensures the flexibility of the working portion11-1of the brush body11, but also maintains overall elasticity and moderate rigidity of the brush body11, and has good transitivity of force.

The brush body11may also be made of a shapeable material, and may be shaped to a certain extent in advance according to the external contour of teeth. When the brush body11extends from the elbow12-1, the preset shape may be basically maintained.

The retractable mechanism200is a slide-type retractable mechanism or a rotation-type retractable mechanism. The retractable mechanism200may be a slide-type retractable mechanism, and the built-in interdental brush101is pushed from or retracted into the handle300through sliding. The retractable mechanism200may also be a rotation-type retractable mechanism. For example, the built-in interdental brush101is pushed from or retracted into the handle300by rotating the retractable mechanism200by using the movement mode of a threaded screw. Definitely, those skilled in the art may also design the retractable mechanism200with different structures as required without departing from the protection scope of this application.

The retractable mechanism200is a slide-type retractable mechanism. The slide-type retractable mechanism includes a sliding groove21and a sliding block22, The sliding block22is pushed to reciprocate along the sliding groove21, so that the built-in interdental brush101extends from or retracts into the handle300. The sliding groove21may be disposed on a housing32of the handle300, and the sliding block22is connected to a connecting portion13of the built-in interdental brush101through a connecting end22-1, so that the built-in interdental brush101and the retractable mechanism200can be connected as a whole. During use, the sliding block22is pushed up and down to move up and down along the sliding groove21. When the sliding block22moves upward, the sliding block22drives the built-in interdental brush101to move upward, and the built-in interdental brush101extends from the handle300to clean the gap between teeth. Upon completion of the cleaning, the sliding block22is pushed downward to drive the built-in interdental brush101to move downward, and the built-in interdental brush101is retracted into the accommodation space31of the handle300.

The built-in interdental brush101is detachably mounted on the retractable mechanism200. The built-in interdental brush101is detachably mounted on the retractable mechanism200, so that the built-in interdental brush101can be replaced when needed, and the use process is cleaner and sanitary.

The built-in interdental brush101is connected to the retractable mechanism200through concave-convex snap fit connection, threaded connection, or interference fit connection. The applicant herein only lists the foregoing detachable connection manners. Those skilled in the art may design different detachable connection manners as required without departing from the protection scope of this application.

The built-in interdental brush101is non-detachably mounted on the retractable mechanism200. The built-in interdental brush101may also be non-detachably mounted on the retractable mechanism200, which can effectively prevent the built-in interdental brush101from falling off during use. Especially when the built-in interdental brush101is a built-in interdental brush101, the delivery device12may be fixedly mounted on the retractable mechanism200through the connecting portion13, and only the brush body11needs to be replaced after cleaning. In this way, the requirement of regular tool replacement and a sanitary requirement for convenience of cleaning is satisfied, and the built-in interdental brush101can also be prevented from falling off the retractable mechanism200during the cleaning. Therefore, the use process is safer.

The built-in interdental brush101is connected to the retractable mechanism200through bonding or integral manufacturing. The built-in interdental brush101is fixedly connected to the retractable mechanism200in various manners such as bonding, integral manufacturing, ultrasonic welding, and the like.

During assembling, a bottom cover33of the handle300is first removed, the built-in interdental brush101is connected to the retractable mechanism200, the built-in interdental brush101and the retractable mechanism200are both placed into the accommodation space31from the bottom of the handle300, the sliding block22of the retractable mechanism200is mounted in the sliding groove21, and the bottom cover33is mounted.

During use, the sliding block22is pushed upward to push the built-in interdental brush101out of the handle300. If the built-in interdental brush101is a built-in interdental brush101, after the built-in interdental brush101is pushed out of the handle300, the brush body11may be first retracted into the elbow12-1at the front end of the delivery device12, the end surface12-11of the elbow12-1at the front end of the delivery device12is pushed against the gap between teeth to be cleaned to push the brush body11, and the working portion11-1of the brush body11extends from the elbow12-1and enters the gap between teeth, so that the gap between teeth can be cleaned.

The retractable built-in interdental brush of the present application includes a built-in interdental brush101, a retractable mechanism200, and a handle300. The built-in interdental brush101is connected to the retractable mechanism200. By driving the retractable mechanism200, the built-in interdental brush101can be driven to extend from the handle300. The end surface12-11of the delivery device12of the built-in interdental brush101is an inclined surface and is at an angle β to an axial direction of the retractable built-in interdental brush900. The angle β is less than 90°. An acute taper is formed on an upper part of the end surface12-11. A position of a tip can just be embedded in the gap between the teeth. The brush body11is pushed, so that the working portion11-1of the brush body11extends from the elbow12-1and enters the gap between the teeth. Therefore, the problem that the existing built-in interdental brush is difficult to align to the teeth and easily stabs gingival tissues is effectively resolved. In addition, by means of the tapered structure, slip-off is less likely to occur, and the positioning is more convenient and stable.

In the foregoing figure:

11represents a brush body,12represents a delivery device, and13represents a connecting portion;11-1represents a working portion,11-2represents a connecting body, and12-1represents an elbow;12-2represents an axial axis of the delivery device12,11-11represents a fiber or a protrusion, and12-11represents an end surface.

21represents a sliding groove,22represents a sliding block,21-1represents a locking block,21-2represents a limiting block, and22-1represents a connecting end.

31represents an accommodation space,32represents a housing, and33represents a bottom cover.

DESCRIPTION OF EMBODIMENTS

Embodiment: Retractable built-in interdental brush of the present application

Referring toFIG.1toFIG.4, a retractable built-in interdental brush of the present application includes a built-in interdental brush101, a retractable mechanism200, and a handle300.

The built-in interdental brush101includes a brush body11and a delivery device12, the brush body11being movably built in an elbow12-1at a front end of the delivery device12. A working portion11-1of the brush body11may extend from or retract into the elbow12-1under the action of external force.

Referring toFIG.1andFIG.1-2, an end surface12-11of a delivery device12of the built-in interdental brush101is an inclined surface and is at an angle β to an axial direction of the retractable built-in interdental brush900.

In the present embodiment, the angle β is less than 90°.

Generally, the angle β ranges from 5° to 50°. The angle β is an acute angle less than 90°, especially an acute angle between 5° and 50°. In this way, an acute taper can be formed on an upper part of the end surface12-11, and a position of a tip can just be embedded in the gap between the teeth. In addition, due to the acute angle, a lower part will not block the movement of the brush body11, and the use process is very convenient.

Referring toFIG.2andFIG.4, in the present embodiment, the brush body11is linear and made of an elastic material. The brush body11can be mounted in the elbow12-1after being elastically deformed. When the brush body11extends from the elbow12-1, the brush body11can be restored or basically restored to the linear shape again.

The elastic material is selected from an elastic polymer material or an elastic metal material. For example, a fiber or a protrusion11-11of the working portion11-1of the brush body11is made of the elastic polymer material, while a connecting body11-2of the brush body11is made of the elastic metal material. In the process of injection molding in a metal mold, the connecting body11-2made of the elastic metal material and the fiber or the protrusion11-11made of the elastic polymer material are formed into a whole to form the brush body11. In this way, the built-in interdental brush with a composite structure not only ensures the flexibility of the working portion11-1of the brush body11, but also maintains overall elasticity and moderate rigidity of the brush body11, and has good transitivity of force.

Referring toFIG.5, the brush body11may also be arc-shaped. When the brush body11extends from the elbow12-1, the brush body11is in an arc shape, and the arc shape may be designed to be an arc shape similar to that of the outer contour of the tooth.

The brush body11may further be made of a shapeable material. For example, the connecting body11-2of the brush body11is made of a thin steel wire. The connecting body11-2of the brush body11may be shaped to a certain extent in advance according to the external contour of teeth. After the working portion11-1of the brush body11extends from the elbow12-1, the preset shape may be basically maintained.

Definitely, those skilled in the art may further design different types of brush bodies as required, which are not described one by one by using an example by the applicant, and do not depart from the protection scope of this application.

In the present embodiment, the retractable mechanism200is a slide-type retractable mechanism. The slide-type retractable mechanism includes a sliding groove21and a sliding block22. The sliding block22is pushed to reciprocate along the sliding groove21, so that the built-in interdental brush101extends from or retracts into the handle300.

The sliding groove21is disposed on a housing32of the handle300, and the sliding block22is connected to a connecting portion13of the built-in interdental brush101through a connecting end22-1, so that the built-in interdental brush101and the retractable mechanism200can be connected as a whole.

In order to ensure that the built-in interdental brush101can be fixed outside the handle300after extending from the handle300, a locking block21-1is disposed at an upper end of the sliding groove21. In order to ensure that the built-in interdental brush101can be fixedly accommodated in the handle300after being retracted into the handle, a limiting block21-2is disposed at a lower end of the sliding groove. When the sliding block22is pushed upward, and the sliding block22crosses the locking block21-1, the built-in interdental brush101may be fixed outside the handle300, which can prevent the built-in interdental brush101from sliding into the handle300during cleaning. When the sliding block22is pushed downward, and the sliding block22crosses the limiting block21-2, the built-in interdental brush101is fixed in the accommodation space31of the handle300, which can prevent the built-in interdental brush101from sliding out of the handle300during carrying.

The retractable mechanism200may also be a rotation-type retractable mechanism. For example, the built-in interdental brush101is pushed from or retracted into the handle300by rotating the retractable mechanism200by using the movement mode of a threaded screw. Definitely, those skilled in the art may also design the retractable mechanism200with different structures as required without departing from the protection scope of this application.

In the present embodiment, the delivery device12of the built-in interdental brush101is fixedly mounted on the retractable mechanism200by bonding through the connecting portion13, and only the brush body11needs to be replaced after cleaning. In this way, the requirement of regular tool replacement and a sanitary requirement for convenience of cleaning is satisfied, and the built-in interdental brush101can also be prevented from falling off the retractable mechanism200during the cleaning. Therefore, the use process can be very safe.

The built-in interdental brush101may further be fixedly connected to the retractable mechanism200in various manners such as integral manufacturing, ultrasonic welding, and the like, which are not described one by one by using an example by the applicant, and do not depart from the protection scope of this application.

The built-in interdental brush101may also be detachably mounted on the retractable mechanism200through concave-convex snap fit connection, threaded connection, or interference fit connection. This facilitates the overall disassembly, cleaning or replacement of the built-in interdental brush101, which is not described by the applicant by using specific examples herein, and does not depart from the protection scope of this application.

During assembling, a bottom cover33of the handle300is first removed, the built-in interdental brush101is connected to the retractable mechanism200, the built-in interdental brush101and the retractable mechanism200are both placed into the accommodation space31from the bottom of the handle300, the sliding block22of the retractable mechanism200is mounted in the sliding groove21, and the bottom cover33is mounted.

During use, the sliding block22is pushed upward to push the built-in interdental brush101out of the handle300. Then the brush body11may be first retracted into the elbow12-1at the front end of the delivery device12, the tip at the upper part of the end surface12-11of the elbow12-1at the front end of the delivery device12is pushed against the gap between teeth to be cleaned to push the brush body11, and the working portion11-1of the brush body11extends from the elbow12-1and enters the gap between teeth, so that the gap between teeth can be cleaned. In this way, the problem that the existing built-in interdental brush easily stabs gingival tissue due to a difficulty of alignment to the gap between teeth may be resolved well. Moreover, the tip can be well embedded in the gap between the teeth, not easy to slip off, and the positioning is very convenient and more stable.

After use, the sliding block22is pushed downward to drive the built-in interdental brush101to move downward, and the built-in interdental brush101is retracted into the accommodation space31of the handle300. The handle300may form a compact instrument box, which is very convenient to carry and facilitates accommodation of the built-in interdental brush101.

Due to the built-in interdental brush, the retractable built-in interdental brush of the present embodiment has many advantages such as convenience and safety in use and convenience for accommodation and carrying.

Especially with the inclined surface design of the end surface12-11of the delivery device12, the end surface12-11is tapered during use, and the tip can be well embedded in the gap between the teeth, which can better position the gap between the teeth. The brush body is less likely to slip off when being pushed and pulled, and the positioning is more convenient and stable.

It should be noted that the structure disclosed and described in this specification may be replaced with another structure with the same effect. In addition, the embodiments described in the present application are not the only structure of implementing the present application. Although exemplary embodiments of the present application have been introduced and described in this specification, it should be understood by a person skilled in the art that the embodiments are merely described by way of example, and a person skilled in the art may make various changes, improvements, and replacements without departing from the present application. Therefore, the protection scope of the present application should be defined in accordance with the spirit and scope of the claims appended to the present application.