CN102038356B - Telescopic interdental brush - Google Patents

Abstract

The invention provides a telescopic interdental brush. The telescopic interdental brush comprises an outer pipe, a casing and an inner pipe, wherein the casing is sleeved in the outer pipe; the inner pipe is sleeved in the casing; the inner pipe is completely positioned inside the casing in a shrinkage state; and at least a part of the inner pipe is positioned outside the casing in an extended state. By using the telescopic interdental brush, a brush head can extend and retract and is convenient and sanitary; meanwhile, brush hair in the brush head can be replaced as required to save energy. The brush has a light and portable overall structure and is convenient to carry. In addition, each component can be formed by using different colors by injection molding respectively, so the brush is more attractive and practical.

Description

retractable interdental brush

technical field

The invention relates to an interdental brush, in particular to a retractable interdental brush.

Background technique

An interdental brush is an appliance used to clean the oral cavity. Patent CN2603627 relates to an interdental brush, specifically shown in Figure 1, which is made of food plastic by one-time injection molding. The front end of the brush handle extends a relatively thin brush head, and the front end of the brush head has long and short bristles arranged in a staggered manner. Its disadvantage is that the brush head is exposed to the air, which is inconvenient to store and carry. In addition, after using for a period of time, the bristles wear out, and although the handle of the brush at this time is generally kept in good condition, it cannot be used continuously.

Contents of the invention

In order to solve the above problems, the present invention provides a retractable interdental brush, which is convenient and hygienic, and at the same time provides replaceable bristles to save resources.

To achieve the above object, the technical scheme of the present invention is as follows:

A retractable interdental brush, comprising an outer tube, a sleeve sleeved in the outer tube, and an inner tube sleeved in the sleeve, and the inner tube is completely located inside the sleeve in a contracted state ; at least part of said inner tube is located outside said casing in an extended state.

The inner wall of the outer tube is provided with an annular inner groove, and the corresponding position of the outer wall of the sleeve is provided with a boss ring, and the shape of the boss ring matches the shape of the annular inner groove.

The outer tube has a closed bottom end, the inner wall of the closed bottom end is extended with a rectangular driving bar, and the inside of the inner tube is formed with a rectangular counterbore, and the shape of the rectangular counterbore is similar to that of the rectangular driving bar. Cooperate.

A spiral guide rail extends from the bottom of the inner wall of the casing, and a spiral boss is provided on the outer wall of the inner tube, and the spiral boss matches the spiral guide rail.

The top of the sleeve has a head petal opening.

The upper part of the sleeve has a textured structure.

By adopting the retractable interdental brush of the present invention, the brush head can be stretched, which is convenient and hygienic, and at the same time, the internal bristles can be replaced according to needs, thereby saving energy. Because the overall structure is light, it is easy to carry. In addition, different colors can be used to injection mold each component separately, which is more beautiful and practical.

Description of drawings

Fig. 1 is a perspective view of an interdental brush in the prior art.

Figure 2 is a perspective view of a retractable interdental brush according to the present invention.

Fig. 3 is a schematic view of the outer tube of a retractable interdental brush according to the present invention.

Figure 4 is a schematic illustration of a sleeve of a retractable interdental brush according to the present invention.

Figure 5 is a schematic illustration of the inner tube of a retractable interdental brush according to the present invention.

Fig. 6 is a perspective view of an assembled state of the retractable interdental brush according to the present invention.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the retractable interdental brush of the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

As shown in FIG. 2 , the telescopic interdental brush according to the present invention includes an outer tube 1 , a sleeve 2 partially sheathed in the outer tube 1 , and an inner tube 3 partially sheathed in the sleeve 2 . Slightly rotating the outer tube 1 can make the inner tube 3 protrude from or retract into the sleeve 2 .

As shown in FIG. 3 , the outer tube 1 of the telescopic interdental brush according to the present invention is cylindrical, with a head opening 11 at the upper top end and a closed bottom end 12 . An annular inner groove 13 is provided on the inner wall of the outer tube 1 at a predetermined height. A rectangular driving bar 14 extends upward from the inner wall of the bottom end 12 .

As shown in FIG. 4 , the top end of the sleeve 2 of the retractable interdental brush according to the present invention has a head petal opening 210 , and the bottom end of the sleeve 2 has a bottom opening 220 . The upper part of the casing 2 is in the shape of a truncated cone and has a pattern structure 250 . The lower part of the casing 2 is cylindrical, and its cross-sectional diameter is slightly smaller than that of the outer tube 1 . The outer wall of the casing 2 is provided with a boss ring 240 whose shape just fits with the annular inner groove 13 of the outer tube 1 so that the outer tube 1 and the inner tube 2 can rotate concentrically. A spiral guide rail 230 extends from the bottom opening 220 on the inner wall of the casing 2 .

As shown in FIG. 5 , the inner tube 3 of the retractable interdental brush according to the present invention is injection molded at one time, and a relatively thin brush head 33 extends from the front end of the brush handle 34 , and the front end of the brush head 33 has long and short bristles arranged in a staggered manner. A screw boss 32 is provided on the outer wall of the brush handle 34 , and the screw boss 32 can move along the screw guide rail 230 on the inner wall of the casing 2 . The inside of the brush handle 34 is formed with a rectangular counterbore 31 whose shape is matched with the rectangular drive bar 14 inside the outer tube 1 .

According to a preferred embodiment of the present invention, the assembling process of the retractable interdental brush is as follows: insert the brush handle 34 in the inner tube 3 into the sleeve 2, so that the spiral boss 32 in the inner tube 3 and the sleeve 2 The spiral guide rail 230 in it is matched, and the bottom end surface of the inner tube 3 is flush with the bottom opening 220 of the sleeve 2 , so that the assembly of the inner tube 3 and the sleeve 2 is completed. Put the assembled inner tube 3 and casing 2 into the outer tube 1, so that the rectangular drive bar 14 in the outer tube 1 matches the rectangular counterbore 31 in the inner tube 3, and the boss ring of the casing 2 240 is matched with the annular inner groove 13 in the outer tube 1 to complete the assembly of the retractable interdental brush of the present invention. The cross-sectional perspective view of the assembled state is shown in FIG. 6 .

According to a preferred embodiment of the present invention, the use method of the retractable interdental brush is: fix the pattern structure 250 of the sleeve tube 2, rotate the outer tube 1 left and right, because the rectangular drive bar 14 in the outer tube 1 and the inner tube 3 The rectangular counterbore 31 of the inner pipe 3 is matched, and the inner pipe 3 is indirectly driven from the surface, and the spiral boss 32 in the inner pipe 3 is matched with the spiral guide rail 230 in the sleeve 2, so the inner pipe 3 can be stretched up and down (in the sleeve 2 The ascending/descending force provided by the spiral guide rail 230 to the inner pipe 3 is greater than the frictional force between the rectangular drive bar 14 in the outer pipe 1 and the rectangular counterbore 31 in the inner pipe 3). The inner tube 3 squeezes the petal opening 210 in the casing 2 to make the inner tube 3 protrude. When the inner tube 3 is fully shrunk, the petal opening structure of the sleeve 2 makes it difficult for stolen goods to fall into the inner tube 3, which is safe and hygienic. Since the combination of the above components is simple and replaceable, the inner tube 3 can be replaced as a whole while the intact outer tube 1 and casing 2 can be used continuously.

Claims (3)

1. brush between a scalable tooth, it is characterized in that, comprise outer tube, be placed on the sleeve pipe in the said outer tube and be placed on the interior pipe in the said sleeve pipe, said interior pipe is positioned at the inside of said sleeve pipe fully when contraction state; At least the said interior pipe of part is positioned at the outside of said sleeve pipe when stretching out state;

The inwall of said outer tube is provided with annular inside groove, and the corresponding position of said sleeve outer wall is provided with the boss annulus, and the shape of said boss annulus matches with the shape of said annular inside groove;

Said outer tube has closed bottom end, and this closed bottom end inwall is extended with rectangle and drives the strength bar, and the inside of said interior pipe forms the rectangle counterbore, and the shape of said rectangle counterbore matches with the shape that said rectangle drives the strength bar;

The inwall of said sleeve pipe extends spiral shell transduction rail from the bottom, the outer wall of said interior pipe is provided with spiral shell changes boss, and said spiral shell changes boss and said spiral shell transduction rail matches.

2. brush between scalable tooth as claimed in claim 1, it is characterized in that, the top of said sleeve pipe has head petal opening.

3. brush between scalable tooth as claimed in claim 1, it is characterized in that, the top of said sleeve pipe has pattern structure.

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