toothbrush for cleaning the backs of upper and lower teeth
The toothbrush design with dual grips and angled bristles facilitates easy and complete cleaning of upper and lower back teeth, addressing the limitations of conventional designs and enhancing oral hygiene.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- 平塚 清徳
- Filing Date
- 2024-10-24
- Publication Date
- 2026-05-12
AI Technical Summary
Conventional toothbrushes with straight handles and parallel bristles struggle to effectively clean the back surfaces of upper and lower teeth without leaving residue, requiring special skills or techniques, and existing designs with bending angles at the neck do not significantly improve this issue.
A toothbrush with a handle featuring an upper and lower grip section and a brush section with angled bristle bundles, allowing for easy and reliable cleaning of both upper and lower back teeth by adjusting the brush position and direction.
Enables efficient and thorough cleaning of the back teeth surfaces without missed spots, preventing cavities, bad breath, and periodontal disease, promoting overall oral health without specialized skills.
Smart Images
Figure 2026076904000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an upper and lower back teeth brushing toothbrush tool when brushing teeth.
Background Art
[0002] Conventionally, at the tip of a generally straight handle, there was one toothbrush integrated with the handle and with the brush bristles parallel to the handle, and it was used to brush the front and back of the upper and lower teeth while devising the position and direction of the handle according to the teeth being brushed. In addition, there is known a front and back double-sided toothbrush that can efficiently shorten the time for the indispensable toothbrushing habit even in a busy daily life (see Patent Document 1). Also, there is known a back teeth brushing toothbrush that has a bending angle provided at the neck of the toothbrush and directly contacts the bristles against the back side and the back teeth, etc. (see Utility Model Document 2).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] Conventionally, at the tip of a generally straight handle, there was one toothbrush integrated with the handle and with the bristles parallel to the handle, and it was used to brush the upper and lower back teeth while devising the position and direction of the handle according to the teeth being brushed. However, even for those who are skilled and proficient, it was impossible to easily and surely brush the upper and lower back teeth without leaving any residue and brush them beautifully. Also, simply providing a bending angle at the neck of the toothbrush in Utility Model Document 2 and giving a certain angle is not much different from brushing with a conventional single toothbrush while changing the direction and angle of the handle, and it is impossible for anyone to easily and surely prevent leaving any residue when brushing the upper and lower back teeth. The present invention has been made to solve the above problems.
Means for Solving the Problems
[0005] The toothbrush body comprises a handle with an upper grip section and a lower grip section on the front and back surfaces, respectively, and a brush section with multiple bristle bundles. The handle portion has an arm portion that extends upward at a right angle to the front tip, maintaining a vertical position. The arm portion is provided with the brush portion at its tip, and the brush portion is provided with multiple bristle bundles on the surface side facing the handle portion, each having a bristle tip at a tip parallel to the handle portion and facing the handle portion. The toothbrush tool for cleaning the backs of the upper and lower teeth consists of the above components. [Effects of the Invention]
[0006] This invention makes it possible for anyone, regardless of age or gender, to easily and reliably clean the backs of their upper and lower teeth, which was previously considered impossible, without requiring any special skills or experience. Therefore, it helps prevent cavities, bad breath, and periodontal disease caused by incomplete brushing, and also has the effect of keeping the oral cavity clean and preventing the onset of other diseases, thus contributing to overall health. [Brief explanation of the drawing]
[0007] [Figure 1] Perspective view of the present invention [Figure 2] Perspective view of the present invention [Figure 3] Perspective view showing the state of use of the present invention [Figure 4] Perspective view showing the state of use of the present invention [Modes for carrying out the invention]
[0008] Embodiments of the present invention will be described below. First, the toothbrush tool (1) for polishing the backs of the upper and lower teeth of the present invention comes in two types: one for adults and one for children. However, apart from the difference in size, the shape and structure are identical, and this embodiment will describe the adult version. Claim 1 (i) The toothbrush body (2) is equipped with a handle (3) having an upper grip portion (4) and a lower grip portion (5) on its front and back surfaces at the rear, and a brush portion (7) having multiple bristle bundles (8). (b) The handle portion (3) has an arm portion (6) extending from its front tip, which is bent upward at a right angle and in a vertical position. The handle portion (3) and the arm portion (6) are made of plastic material. (h) The arm portion (6) is provided with the brush portion (7) made of plastic at its tip. (ii) The brush portion (7) is provided with a plurality of bristle bundle portions (8) on the surface portion (7a) on the handle portion (3) side, each having a bristle tip portion (9) at the tip that is parallel to the handle portion (3) and facing the handle portion (3). Claim 2 (e) The brush portion (7) is a horizontally elongated rectangle and has a surface portion (7a) on the side facing the handle portion (3) and a back portion (7b) on the opposite side. (h) The front surface portion (7a) is provided such that the left and right portions of the back surface portion (7b) are positioned behind the central portion, and the front surface portion (7a) is curved in a gentle, curved manner. (t) Multiple bristle bundles (8) of uniform length, each having a bristle tip (9) facing the handle (3), are provided on the surface (7a) of the brush portion (7), which has a curved shape and a gentle curved position, parallel to the handle portion (3). See Figures 1 and 2. The present invention has the structure described above. The toothbrush tool (1) for cleaning the backs of the upper and lower teeth according to the present invention is designed to be easily switched between cleaning the backs of the upper teeth and cleaning the backs of the lower teeth. When using it, first select one of the two. See Figure 2. To begin with the back of the upper teeth, hold the handle (3) with your right or left hand, with the upper grip (4) facing upwards, and lightly pinch it with your index finger (H), middle finger, and thumb (O). Slowly insert the brush head (7) into your wide-open mouth (K) from the back side (7a). The bristles (9) are brought into contact with the back surface of the upper front teeth (J), and the handle (3) is moved in small, short motions up and down or left and right to polish the upper front teeth (J). Then, the handle is slid to the left or right and the same motion is used to polish the back surfaces of the other upper teeth. At this time, the bristle bundle (8) is perpendicular to the back surface of the upper teeth, and the bristle tip (9) makes even and wide contact with the back surface of the upper teeth, allowing for efficient, easy, and reliable cleaning that prevents missed spots. Furthermore, since the brush part (7) is arranged in a gently curved shape to match the arrangement of the teeth, the bristle tip (9) makes even and wide contact with the back surface of the teeth, allowing for smooth cleaning. After brushing the back of the upper teeth, rotate the upper grip portion (4) and the lower grip portion (5) of the handle portion (3) 180 degrees to change the position of the brush portion (7) downwards. Next, brush the back of your lower teeth using the same technique as you used to brush the back of your upper teeth. While it was impossible with a conventional toothbrush alone, using the toothbrush tool (1) for cleaning the backs of the upper and lower teeth of the present invention makes it easy and reliable to prevent missed spots and achieve a clean brushing result. It's hard to believe how difficult it used to be to thoroughly clean the back of my teeth; now I can easily and quickly clean them thoroughly, leaving no plaque behind, making brushing my teeth a pleasant and enjoyable experience. [Explanation of Symbols]
[0009] 1. Toothbrush for cleaning the backs of upper and lower teeth 2. Toothbrush body 3. Handle 4. Upper grip 5. Lower grip 6. Arm 7. Brush part 8. Bristle bundle 9. Bristle tip S. User J. Upper front teeth G. Lower front teeth K. Mouth N. Right hand H. Index finger O. Thumb
Claims
1. The toothbrush body comprises a handle with an upper grip section and a lower grip section on the front and back surfaces, respectively, and a brush section with multiple bristle bundles. The handle portion has an extended arm portion that bends upward at a right angle at the front tip and is in a vertical position. The aforementioned arm portion is provided with the brush portion at its tip, and the brush portion is provided with multiple bristle bundles on the surface of the handle portion that face the handle portion and have bristle tips at the ends parallel to the handle portion, characterized in that it is a toothbrush for cleaning the backs of the upper and lower teeth.
2. The brush portion is rectangular in shape and has a surface portion on the handle side and a back portion on the opposite side. The left and right portions of the back portion are located behind the central portion, and the surface portion is provided on the handle side, giving it a curved and gently curved shape. The upper and lower teeth cleaning toothbrush according to claim 1, characterized in that a plurality of bristle bundles of uniform length, each having a bristle tip facing the handle, are provided on the surface of the brush portion which has a curved and gently curved shape, parallel to the handle portion.