CN108451158B - Interdental brush and technology using bumps to improve the ability of cleaning brush to insert and locate - Google Patents

Abstract

The present invention discloses an interdental brush and a process thereof which utilizes a protrusion to enhance the insertion and positioning ability of a cleaning brush. The interdental brush comprises a handle and a cleaning brush. A through hole is arranged at the front end of the handle, and an insertion slot and a receiving slot are sequentially arranged along the axial direction. The receiving slot can be connected to the through hole through the insertion slot, and a protrusion is radially protruded on the inner wall surface of the through hole. The cleaning brush comprises a brush rod, on which a plurality of bristles are arranged. When one end of the brush rod away from the bristles passes through the through hole and the insertion slot in sequence and extends into the receiving slot, one end of the brush rod can collide with the protrusion and bend, so that one end of the brush rod deviates from the axial position of the insertion slot, so as to enhance the insertion and positioning ability of the cleaning brush and prevent the cleaning brush from falling off from the through hole or the insertion slot easily.

Description

Interdental brush and technology using bumps to improve the ability of cleaning brush to insert and locate

technical field

The present invention relates to an interdental brush and a process thereof which utilizes bumps to improve the insertion and positioning capability of a cleaning brush, in particular, a perforation, an embedded slot and an accommodating groove are arranged in sequence along the axial direction of the handle, and the accommodating groove is There are bumps on the inner wall of the cleaning brush, so that when the brush rod of the cleaning brush is inserted into the handle, it can be bent due to the collision with the bumps, thereby increasing the friction between the brush rod and the bumps, and improving cleaning The structure and process of the embedded positioning ability of the brush.

Background technique

In recent years, with the development of economy, modern people live a prosperous life. They not only pay attention to the enjoyment of food, but also begin to pay attention to personal oral health. Maintaining good oral hygiene is one of the essential elements to maintain the quality of life. , Healthy teeth can make people have full confidence in social chat, and then add charm and style when speaking. In the past, people used to use toothbrushes to clean their mouths, but because toothbrushes could not completely clean the food residues in the gaps between the teeth, in order to meet this need, various dental floss, dental floss sticks and interdental brushes with the function of cleaning the teeth That came into being.

Taking the interdental brush as an example, it is a cleaning tool with a volume similar to a toothpick but with bristles, and its structure includes a handle and a cleaning brush embedded in the handle. A stainless steel wire is twisted and wound, so that a plurality of bristles can be stably fixed between these wires. Since the width of the brush rod is similar to the tooth gap, the user can hold the handle and extend the cleaning brush. Brush back and forth between the teeth to completely remove the food residue left between the teeth through the bristles.

Although the interdental brush has an excellent cleaning effect and is gradually widely accepted by the public, there is still a lot of room for improvement in the product quality of the interdental brush. Insufficient positioning capability. Because the distance and position between the teeth of each person and each tooth are slightly different, when the user uses the interdental brush to clean the oral cavity, there will inevitably be constant friction between the brush rod and the teeth, especially when cleaning the teeth deep in the mouth , the user must constantly adjust the holding angle of the hand in order to completely clean up, and in the case that the brush rod will be continuously pulled by friction from various angles, the brush rod will easily fall off the handle, or even leave behind In the user's mouth, not only the cleaning action is interrupted, but also discomfort to the user (eg, easy scratching of the tongue or mouth).

In order to solve this problem, many manufacturers have improved the structure of interdental brushes. For example, the brush rod is first bent, and then an injection molding process is used to form a handle, so that the bending angle on the brush rod can improve the resistance pull. However, this method still has its drawbacks. First of all, if the bending part of the brush rod is covered with plastic by injection molding process, the plastic used must be relatively hard, so as to provide sufficient positioning strength, but in this way, the It will make the interdental brush lose the flexibility of elastic bending, and it is not easy to clean the gap between the teeth deep in the mouth; in addition, in terms of production, this practice must use an additional tool to bend the brush shaft of the cleaning brush, and then , the brush rod can be covered by the injection molding process. Therefore, this method cannot be easily applied directly to the existing production line.

It can be seen from the above description that when improving the current interdental brush, it is not only necessary to solve the problem of insufficient positioning ability, but also from the perspective of production, to find a process that takes into account the production cost and process. The current market situation, therefore, how to design a new interdental brush structure and process under the above-mentioned various considerations has become an important problem to be solved by the present invention.

SUMMARY OF THE INVENTION

In view of the problem that the existing interdental brushes are easy to come loose from the handle due to the insufficient positioning ability of the brush rod during the cleaning process, the inventor relies on years of practical experience, after many researches, tests and experiments. After the improvement, an interdental brush and a process thereof using the bumps to improve the insertion and positioning capability of the cleaning brush of the present invention are finally designed, which is expected to effectively overcome many shortcomings of the prior art.

An object of the present invention is to provide an interdental brush process that utilizes bumps to improve the insertion and positioning capability of a cleaning brush. First, an injection molding process is used to form a handle in a mold, and the front end of the handle is provided with a A perforation is formed, and an insertion slot and an accommodating slot are arranged in sequence along the axial direction at the position adjacent to the front end. The accommodating slot can be exposed from the side of the handle, and one end thereof can pass through the insertion slot to communicate To the perforation, the hole diameter of the accommodating slot is larger than that of the insertion slot, the inner wall surface of the accommodating slot is radially protruded with a projection, and the tip of the projection can correspond to the insertion slot. the axis of the slot; then, insert a cleaning brush into the handle, the cleaning brush includes a brush bar on which a plurality of bristles are arranged, and one end of the brush bar can pass through the The through hole and the embedded slot extend into the accommodating slot, and will be bent against the projection, so that the end of the brush rod away from the bristles can deviate from the axial position of the embedded slot. In this way, since the brush rod can be naturally bent during the insertion process to tighten the protrusion, the friction force between one end of the brush rod and the handle can be greatly increased, and the cleaning brush can be improved. Insert positioning capability without easily falling out of the perforation or insert slot.

Another object of the present invention is to provide an interdental brush that utilizes bumps to improve the insertion and positioning capability of a cleaning brush. An inserting slot and an accommodating slot are arranged in sequence along the axial direction. One end of the accommodating slot passes through the inserting slot and is connected to the through hole, and the aperture of the accommodating slot is larger than the diameter of the inserting slot. The inner wall surface of the accommodating groove is radially provided with a convex block, and the tip of the convex block can correspond to the axis of the embedding slot; the cleaning brush includes a brush rod, and a brush rod is provided on it. A plurality of bristles, the outer diameter of the brush rod is matched with the hole diameter of the insertion slot, so as to be able to be inserted into the handle, and one end of the brush rod passes through the through hole and the insertion hole in sequence. When the slot is inserted into the accommodating slot, the part adjacent to one end of the brush rod can collide with the protrusion to produce bending, so that the end of the brush rod away from the bristles can deviate from the The axial position of the insertion slot can greatly increase the friction between one end of the brush rod and the handle, thereby greatly improving the insertion and positioning ability of the cleaning brush, so as not to easily fall off from the through hole or the insertion slot .

For the convenience of your examiners to have a further understanding and understanding of the structural features of the present invention, the manufacturing process and its efficacy and purpose, the embodiments are now given in conjunction with the accompanying drawings, and the detailed description is as follows:

Description of drawings

Fig. 1 is the overall appearance schematic diagram of the interdental brush of the present invention;

2 is a schematic cross-sectional view of an interdental brush of the present invention; and

3A to 3D are schematic diagrams of the interdental brush process of the present invention.

【Symbol Description】

Interdental brushes... 1

Grip... 11

Perforation... 111

Recessed slot... 112

Reservoir………113

Bumps... 114

Encapsulation block …… 115

Filling slot... 116

Cleaning brush... 12

Brush lever…………121

Bristles... 122

Support housing …… 13

Filling Blocks... 131

Axis…………L

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

The present invention is an interdental brush that utilizes bumps to improve the insertion and positioning capability of a cleaning brush and a process thereof. Please refer to FIG. 1 , FIG. 2 and FIG. 3A , which are the first preferred embodiment of the interdental brush of the present invention. The interdental brush 1 includes a handle 11 and a cleaning brush 12, a front end of the handle 11 is provided with a through hole 111, and a position adjacent to the front end is provided with an insertion slot 112 and an accommodating slot 113 in sequence along the axial direction. One end of the accommodating slot 113 is connected to the through hole 111 through the inserting slot 112 , and the aperture of the accommodating slot 113 is larger than that of the inserting slot 112 .

The inner wall surface of the accommodating groove 113 is radially protruded with a protrusion 114 , and the protruding length of the protrusion 114 is equal to or greater than the radial length of the accommodating groove 113 , as shown in FIG. 2 and FIG. 3A , the protrusion The tip of the block 114 can correspond to the axis L of the insertion slot 112 . It should be mentioned here that, in this embodiment, the cross-sectional configuration of the bump 114 is roughly a triangle, but in fact, it can also be other configurations (eg, a circular bump).

The cleaning brush 12 includes a brush rod 121 and a plurality of bristles 122. The brush rod 121 is formed by twisting and winding a plurality of stainless steel wires, so that the bristles 122 can be stably fixed between the steel wires. The brush rod 121 The outer diameter of the brush rod 121 matches the hole diameter of the insertion slot 112, so that it can be tightly inserted into the handle 11, and one end of the brush rod 121 passes through the through hole 111 and the insertion slot 112 in sequence, and extends into the handle 11. When the brush rod 121 is placed in the accommodating groove 113 , the part adjacent to one end of the brush rod 121 can collide with the protrusion 114 to be bent, so that the end of the brush rod 121 away from the bristles 122 can deviate from the insertion slot 112 . The axis L position greatly increases the friction force between one end of the brush rod 121 and the handle 11 , thereby greatly improving the insertion and positioning capability of the cleaning brush 12 , so as not to easily fall off the through hole 111 or the insertion slot 112 .

In this way, since the end of the brush rod 121 of the cleaning brush 12 away from the bristles 122 collides with the protrusion 114 and is bent, the brush rod 121 can abut on the protrusion 114 with a larger area (ie, The abutting area after bending is larger than the abutting area when it is not bent), and the brush rod 121 can also be pressed towards the direction of the convex block 114 by its own elastic restoring force, so the brush rod 121 and the convex block 114 When the cleaning brush 12 is pulled by an external force, the brush rod 121 can pass the friction force between the brush rod 121 and the inner wall surface of the insertion slot 112 and the convex block 114, It is firmly fixed in the handle 11 so as not to fall off.

In addition, in order to enable the brush rod 121 to penetrate deep into the handle 11 in an embedded manner, and to maintain a certain elastic material tension (or elastic restoring force) after the brush rod 121 is bent, in this embodiment, the brush rod 121 The bending angle of the part adjacent to one end is between 5 and 25 degrees (preferably, the range is between 15 and 25 degrees), and the accommodating groove 113 is exposed on the side of the handle 11 so that the interdental brush 1 The brush rod 121 can be further wrapped by an encapsulation block 115 . The encapsulation block 115 is formed in the accommodating groove 113 by means of injection molding, so as to cover the portion adjacent to one end of the brush rod 121 and the protruding block 114 . The two mechanisms of covering force can further fix the cleaning brush 12 .

In this embodiment, the interdental brush 1 further includes a support shell 13 , and the support shell 13 is formed on the side of the handle 11 through an injection molding process, so as to cover the packaging block 115 and the accommodating groove 113, the hardness of the support shell 13 is greater than the hardness of the handle 11, so that the interdental brush 1 can take into account structural strength and bending toughness. The support shell 13 is provided with a filling block 131 , the filling block 131 can be inserted into a filling groove 116 on the side of the handle 11 , so that the support shell 13 can be tightly integrated with the handle 11 .

2 and FIGS. 3A-3D, the interdental brush process of the present invention is now described as follows: First, a handle 11 is formed in a mold by an injection molding process. The structure of the handle 11 is as described above, That is, a through hole 111 is provided at the front end, and an insert slot 112 and an accommodating slot 113 are arranged in sequence along the axial direction at the position adjacent to the front end. The accommodating slot 113 can be exposed from the side of the handle 11 and one end can pass through The insertion slot 112 communicates with the through hole 111 , and the inner wall of the accommodating slot 113 protrudes with a protrusion 114 in the radial direction. The tip of the protrusion 114 can correspond to the position of the axis L of the insertion slot 112 .

Then, a cleaning brush 12 is inserted into the handle 11, one end of the brush rod 121 of the cleaning brush 12 can pass through the through hole 111 and the insertion slot 112 in sequence, and extend into the accommodating slot 113, and 3B and 3C), the end of the brush rod 121 away from the bristles 122 is deviated from the axis L of the embedded slot 112, so as to greatly increase the brush rod 121. The frictional force between one end and the handle 11 greatly improves the insertion and positioning capability of the cleaning brush 12 , so as not to easily fall off from the through hole 111 or the insertion slot 112 . From a technological point of view, since the present invention does not need to actively bend the brush rod 121 by an additional tool, it is only necessary to allow the brush rod 121 to naturally collide with the protrusion 114 and bend during the insertion process, and more , which will not increase the complexity of the process at all, but can be easily applied to the existing production line to enhance the durability of the interdental brush 1 .

In addition, please refer to FIG. 2 , FIG. 3C and FIG. 3D , in this embodiment, after the cleaning brush 12 is inserted into the handle 11 , the process can also perform a second injection molding process. An encapsulation block 115 is formed in the placement groove 113 , and the encapsulation block 115 can cover the end of the brush rod 121 away from the bristles 122 and the bump 114 . Comparing the two injection molding processes, the handle 11 can be made of a softer plastic, and the packaging block 115 can be made of a harder plastic. In this way, not only can the structural strength and bending toughness be taken into consideration, but also through the combination of two different plastics. The coating will further enhance the friction force and the insertion positioning force.

Then, please refer to FIG. 2 and FIG. 3D , after the second injection molding process is completed, a third injection molding process can be performed to form a support shell 13 on the side of the handle 11 , and the support shell 13 can The packaging block 115 and the accommodating groove 113 are covered, and the hardness of the plastic used to form the support shell 13 is greater than the hardness of the plastic used to form the handle 11 .

In this embodiment, a filling groove 116 is defined on the side of the handle 11 , and a filling block 131 can be formed in the filling groove 116 during the third injection molding process (as shown in FIG. 2 ). The sectional view of the finished product shown), the filling block 131 is integrally formed with the support shell 13, so that the support shell 13 can pass through the filling block 131 and be integrated with the handle 11.

The above are only some preferred embodiments of the present invention. However, the technical features of the present invention are not limited to this. Those skilled in the art can easily think of equivalents after referring to the technical content of the present invention. Changes shall not depart from the protection scope of the present invention.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above-mentioned specific embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention. Within the spirit and principle of the present invention, any modifications, equivalent replacements, improvements, etc. made should be included within the protection scope of the present invention.

Claims (7)

1. A manufacturing method of an interdental brush for improving the inserting and positioning capability of a cleaning brush by utilizing a convex block is characterized by comprising the following steps:

forming a grab handle in a mould by using an injection molding process, wherein the front end of the grab handle is provided with a through hole, the part adjacent to the front end is sequentially provided with an embedding slot and an accommodating groove along the axial direction, the accommodating groove can be exposed from the side surface of the grab handle, one end of the accommodating groove can be communicated to the through hole through the embedding slot, the aperture of the accommodating groove is larger than that of the embedding slot, the inner wall surface of the accommodating groove is convexly provided with a convex block along the radial direction, and the tip of the convex block can correspond to the axis of the embedding slot;

inserting a cleaning brush into the handle, wherein the cleaning brush comprises a brush rod, a plurality of bristles are arranged on the brush rod, one end of the brush rod can sequentially penetrate through the through hole and the insertion groove, extend into the accommodating groove and can abut against the bump to be bent, so that one end of the brush rod, far away from the bristles, can deviate from the axis position of the insertion groove, the friction force between one end of the brush rod and the handle is greatly increased, the insertion positioning capacity of the cleaning brush is greatly improved, and the cleaning brush cannot easily fall off from the through hole or the insertion groove; and

and performing a second injection molding process to form a packaging block in the accommodating groove, wherein the packaging block can cover one end of the brush rod, which is far away from the bristles, and the bump.

2. The method of claim 1, further comprising the steps of:

and carrying out a third injection molding process to form a support shell on the side surface of the grab handle, wherein the support shell can shield the packaging block and the accommodating groove.

3. The method of claim 2, wherein the support housing has a hardness greater than a hardness of the grip.

4. An interdental brush for improving an inserting positioning ability of a cleaning brush by using a projection, comprising:

the handle is provided with a through hole at the front end, an embedding slot and an accommodating groove are sequentially arranged at the position close to the front end along the axial direction, the accommodating groove can be exposed out of the side surface of the handle, one end of the accommodating groove is communicated to the through hole through the embedding slot, the aperture of the accommodating groove is larger than that of the embedding slot, a convex block is convexly arranged on the inner wall surface of the accommodating groove along the radial direction, and the tip of the convex block can correspond to the axis of the embedding slot;

a cleaning brush, including a brush-holder stud, and there are polyrhizal brush hairs on it, the external diameter of the said brush-holder stud is matched with aperture of the said embedded slot, in order to inlay and insert in the said grab handle, and pass the said perforation and embedded slot sequentially in one end of the said brush-holder stud, under the situation that stretch into the said containing groove, the position that the adjacent end of the said brush-holder stud is adjacent to one end can be with the said lobe block and produce the bending, and make the end of the said brush-holder stud far away from brush hairs can deviate from the axial position of the said embedded slot, in order to increase the friction force between said one end of the said brush-holder stud and the said grab handle greatly, and then promote the embedding and inserting the locating ability of the said cleaning brush greatly, and will not; and

and the packaging block is formed in the accommodating groove in an injection molding mode so as to coat the part of the brush rod adjacent to one end and the bump.

5. An interdental brush according to claim 4 wherein the bending angle of the portion of the stem adjacent the one end thereof is between 5 and 25 degrees.

6. The interdental brush of claim 4 or 5 further comprising a support housing formed on a side of said handle by an injection molding process to shield said encapsulation block and said receiving slot.

7. The interdental brush of claim 6 wherein said support housing has a hardness greater than a hardness of said handle.

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