TWI609653B - Interdental brush for improving the position of cleaning brush by using a bump and its manufacturing process - Google Patents

Description

Interdental brush for improving the position of cleaning brush by using a bump and its manufacturing process

The invention relates to an interdental brush which utilizes a bump to improve the insertion and positioning ability of the cleaning brush and a manufacturing process thereof, in particular, a perforation, a fitting slot and a receiving groove are sequentially arranged along the axial direction of the grip, and are accommodated in the groove. The wall surface is convexly provided with a protrusion, so that when the brush rod of the cleaning brush is inserted into the handle, the bending can be caused by the contact with the protrusion, thereby improving the friction between the brush rod and the protrusion, and improving the cleaning brush. The structure and process of the embedded positioning capability.

In recent years, with the development of the economy, modern people have lived a prosperous life, not only paying attention to the enjoyment of diet, but also paying attention to the oral health of individuals. Maintaining good oral hygiene is one of the necessary elements for maintaining the quality of life. Healthy teeth can provide full confidence in social conversations, adding to the charm and style of speaking. In the past, people used to use a toothbrush to clean the mouth. However, because the toothbrush could not thoroughly clean the food residue in the gap of the tooth, various dental floss, floss stick and interdental brush with clean tooth function were needed to meet this need. It came into being.

Taking the "interdental brush" as an example, it is a cleaning tool having a volume similar to a toothpick but having bristles, and the structure thereof comprises a handle and a cleaning brush embedded in the handle, the brush bar of the cleaning brush is composed of A plurality of stainless steel wire turns are wound so that a plurality of bristles can be stably fixed between the wires. Since the width of the brush bar is close to the tooth gap, the user can hold the handle. The cleaning brush is stretched between the teeth and brushed back and forth to pass through the bristles to completely remove the food residue remaining between the teeth.

Although the interdental brush has excellent cleaning effect, it is gradually accepted by the public. However, there is still much room for improvement in the quality of the interdental brush. The main reason is: between the cleaning brush and the brush bar. Insufficient positioning ability. Because the spacing and position of the teeth of each person and each tooth are slightly different, when the user cleans the mouth with the interdental brush, the brush bar and the teeth are bound to constantly rub, especially when cleaning the teeth deep in the mouth. The user must constantly adjust the holding angle of the hand, and can completely clean it up. When the brush bar is constantly subjected to friction pulling from various angles, the brush bar can easily fall off from the handle, even Remaining in the user's mouth not only interrupts the cleaning action, but also causes discomfort to the user (eg, easy to scratch the tongue or mouth).

In order to solve this problem, many manufacturers have improved the structure of the interdental brush, for example, first bending the brush bar, and then forming a grip by an injection molding process to increase the resistance through the bending angle on the brush bar. pull. However, this practice still has its drawbacks. First, if the plastic part of the injection molding process is used to cover the bent portion of the brush bar, the plastic used must be hard, so that it can provide sufficient positioning strength, but As a result, the interdental brush will lose the elastic bending toughness, and it is not easy to clean the teeth in the deep part of the mouth; in addition, in terms of production angle, this method must pass through the additional fixture, the brush of the cleaning brush The rod is bent and twisted, and the injection molding process can be used to cover the brush bar. Therefore, this method cannot be easily applied directly to the existing production line.

It can be seen from the above description that in the improvement of the interdental brush for the present time, it is not only necessary to solve the problem of insufficient positioning ability, but also to find a kind of consideration from the perspective of production. The production cost and process of the process, so that can meet the current market conditions, therefore, how to design a new interdental brush structure and its process under the above various considerations, that is, the invention is intended to be solved here. important question.

In view of the fact that the current interdental brush has insufficient positioning ability due to the brush bar, it is easy to loosen the handle during the cleaning process. The inventor has studied and tested many times with years of practical experience. After the improvement, the interdental brush and the manufacturing process thereof for improving the insertion and positioning ability of the cleaning brush by using the bump are finally designed, and the defects of the prior art can be effectively overcome.

An object of the present invention is to provide an interdental brush process for improving the positioning ability of a cleaning brush by using a bump, which first forms a handle in a mold by using an injection molding process, and a pierr is provided at a front end of the handle. And a portion of the front end adjacent to the front end is provided with a nesting slot and a receiving slot, the receiving slot can be exposed from the side of the handle, and one end of the slot can pass through the slot to communicate with the through hole. The aperture of the accommodating groove is larger than the aperture of the insertion slot, and the inner wall surface of the accommodating groove is convexly convexly disposed at a radial direction, and the tip end of the protrusion can correspond to the axis of the insertion slot; The brush is inserted into the handle, the cleaning brush includes a brush bar, and a plurality of bristles are disposed thereon, and one end of the brush bar can sequentially pass through the through hole and the insertion slot, and protrude into the accommodating groove And the bump is touched to cause bending, and the brush rod is away from one end of the bristle to be offset from the axial position of the embedding slot. In this way, since the brush bar can be naturally bent during the insertion process to press the bump, the friction between the end of the brush bar and the handle can be greatly increased, and the insertion and positioning capability of the cleaning brush can be improved. It does not easily fall off from the perforated or inset slot.

Another object of the present invention is to provide an interdental brush that utilizes a bump to lift a cleaning brush insertion positioning capability, including a handle and a cleaning brush, the handle having a perforation at a front end thereof, and An insertion slot and an accommodating slot are sequentially disposed along the axial direction of the front end portion, and one end of the accommodating slot is communicated to the through hole, and the aperture of the accommodating slot is larger than the insertion hole a hole of the groove, the inner wall surface of the accommodating groove is convexly convexly arranged with a protrusion, the tip of the protrusion can correspond to the axis of the insertion slot; the cleaning brush comprises a brush bar, and the plurality of roots are disposed thereon a bristles, the outer diameter of the brush bar is matched with the aperture of the insert slot to be inserted into the handle, and the through hole and the slot are sequentially inserted at one end of the brush bar to extend into the shank In the case of the accommodating groove, the portion adjacent to one end of the brush bar can be bent with the bump to cause bending, and the one end of the brush bar away from the bristles can be offset from the axis position of the insertion slot, thereby greatly increasing The friction between the one end of the brush bar and the handle further greatly enhances the insertion and positioning ability of the cleaning brush without easily falling off from the perforation or the insertion slot.

In order to have a better understanding and understanding of the structural features, production process and efficacy of the present invention, the embodiments are described in detail with reference to the following figures:

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no

〔this invention〕

1‧‧‧ interdental brush

11‧‧‧Handle

111‧‧‧Perforation

112‧‧‧ embedded slots

113‧‧‧ accommodating slots

114‧‧‧Bumps

115‧‧‧Packing block

116‧‧‧Filling tank

12‧‧‧ Cleaning brush

121‧‧‧ brush bar

122‧‧‧ bristles

13‧‧‧Support shell

131‧‧‧Filling blocks

L‧‧‧ axis

1 is a schematic view showing the overall appearance of the interdental brush of the present invention; FIG. 2 is a schematic cross-sectional view showing the interdental brush of the present invention; and 3A to 3D are schematic views showing the interdental brush manufacturing process of the present invention.

The present invention relates to an interdental brush for improving the insertion position of a cleaning brush by using a bump, and a process thereof, as shown in Figures 1, 2 and 3A, which is a first preferred embodiment of the interdental brush of the present invention, The interdental brush 1 includes a handle 11 and a cleaning brush 12. The front end of the handle 11 is provided with a through hole 111, and a portion of the front end adjacent to the front end is sequentially provided with a slot 112 and a receiving slot 113. One end of the accommodating groove 113 passes through the insertion slot 112, communicates with the through hole 111, and the hole of the accommodating groove 113 The diameter system is larger than the aperture of the embedded slot 112.

A convex block 114 is protruded from the inner wall surface of the accommodating groove 113. The protruding length of the protruding block 114 is equal to or larger than the radius of the accommodating groove 113. As shown in FIGS. 2 and 3A, the convex portion is convex. The tip of the block 114 can correspond to the axis L of the flush slot 112. It should be noted that in this embodiment, the convex shape of the bump 114 is slightly triangular, but may actually be other configurations (such as circular bumps).

The cleaning brush 12 includes a brush bar 121 and a plurality of bristles 122. The brush bar 121 is formed by winding a plurality of stainless steel wire turns so that the bristles 122 can be stably fixed between the wires. The outer diameter of the brush rod 121 is matched with the aperture of the insert slot 112 so as to be tightly inserted into the handle 11, and the through hole 111 and the slot are sequentially passed through one end of the brush rod 121. 112, in the case of extending into the accommodating groove 113, the portion of the brush bar 121 adjacent to one end can be in contact with the bump 114 to cause bending, and the brush bar 121 can be offset from the one end of the bristles 122. The position of the axis L of the slot 112 is substantially increased to increase the friction between the end of the brush rod 121 and the handle 11, thereby greatly improving the insertion and positioning capability of the cleaning brush 12 without easily inserting the hole 111 or the insertion hole 111. The groove 112 is detached.

Thus, since the brush bar 121 of the cleaning brush 12 is away from the bump 114 from one end of the bristles 122 and is bent, the brush bar 121 can abut against the bump 114 with a larger area (ie, The abutting area after bending is greater than the abutting area when the bending is not performed, and the brush bar 121 can still be pressed toward the protruding block 114 through its elastic restoring force. Therefore, the brush bar 121 and the protruding block Between the 114s, a strong frictional force can be generated to transmit the friction between the brush bar 121 and the inner wall surface of the fitting slot 112 and the projection 114 when the cleaning brush 12 is pulled by an external force. , is firmly fixed in the grip 11 without falling off.

In addition, in order to enable the brush bar 121 to deeply penetrate the handle 11 in an inserting manner, and to maintain a certain elastic material tension (or elastic restoring force) after the brush bar 121 is bent, in the present embodiment, the brush bar 121 The bending angle of the portion adjacent to one end is between 5 and 25 degrees (preferably between 15 and 25 degrees), and the receiving groove 113 is exposed on the side of the handle 11 to make the interdental brush The brush bar 121 can be further wrapped by a package block 115. The package block 115 is formed in the accommodating groove 113 in an injection molding manner to cover a portion adjacent to one end of the brush bar 121 and the bump 114, thereby absorbing "insertion friction force" and "ejecting" The coating force of the forming means that the cleaning brush 12 can be further fixed.

In the present embodiment, the interdental brush 1 further includes a support housing 13 that is formed on the side of the handle 11 through an injection molding process to shield the package block 115 and the receiving slot. 113. The hardness of the support shell 13 is greater than the hardness of the grip 11, so that the interdental brush 1 can balance structural strength and bending toughness. The supporting housing 13 is provided with a filling block 131. The filling block 131 can be embedded in one of the filling grooves 116 of the side of the handle 11, so that the supporting housing 13 can be tightly integrated with the handle 11.

Referring to Figures 2 and 3A to 3D, the interdental brush process of the present invention is illustrated as follows: First, a handle 11 is formed in a mold by an injection molding process, and the structure of the handle 11 is as described above. The front end is provided with a through hole 111, and a portion of the front end adjacent to the front end is sequentially provided with a fitting slot 112 and a receiving slot 113. The receiving slot 113 can be exposed from the side of the handle 11, and one end of the receiving slot 113 can pass through the a slot 112 is connected to the through hole 111. A convex block 114 is protruded from the inner wall surface of the accommodating groove 113. The protruding length of the protrusion 114 is greater than or equal to the radius of the accommodating groove 113. The tip end of the bump 114 can correspond to the position of the axis L of the fitting slot 112.

Then, a cleaning brush 12 is inserted into the handle 11, and the brush bar 121 of the cleaning brush 12 One end can pass through the through hole 111 and the insertion slot 112 in sequence, and protrude into the accommodating groove 113, and the bump 114 is touched to cause bending (such as changes in the 3B and 3C drawings). The brush rod 121 is away from the end of the bristles 122 from the axis L of the insert slot 112 to greatly increase the friction between the end of the brush rod 121 and the handle 11, thereby greatly improving the insertion and positioning capability of the cleaning brush 12. It does not easily fall off from the perforation 111 or the inset slot 112. As far as the process is concerned, since the brush bar 121 is not required to be actively bent by the additional jig in the present case, the brush bar 121 is naturally required to be in contact with the bump 114 during the insertion process and is bent. It does not increase the complexity of the process at all, and can be easily applied to existing production lines to enhance the durability of the interdental brush 1.

In addition, as shown in FIGS. 2, 3C and 3D, in the embodiment, after the cleaning brush 12 is inserted into the handle 11, the process can still perform a second injection molding process, and the receiving process is performed. A package block 115 is formed in the slot 113. The package block 115 can cover the brush bar 121 away from one end of the bristles 122 and the bump 114. Comparing the two injection molding processes, the material of the handle 11 can be made of soft plastic, and the package block 115 can select a hard plastic, so that not only structural strength and bending toughness can be achieved, but also by two different plastics. The cladding will further enhance the friction and the positioning force.

Further, as shown in FIGS. 2 and 3D, after the second injection molding process is completed, a third injection molding process can be performed to form a support casing 13 on the side of the handle 11, the support casing 13 The package block 115 and the accommodating groove 113 can be shielded, and the hardness of the "plastic used to form the support case 13" is greater than the hardness of the "plastic used to form the handle 11."

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

The above description is only a few preferred embodiments of the present invention, but the technical features of the present invention are not limited thereto, and those skilled in the relevant art can easily think of it after considering the technical content of the present invention. Equivalent changes should not depart from the scope of protection of the present invention.

1‧‧‧ interdental brush

11‧‧‧Handle

112‧‧‧ embedded slots

113‧‧‧ accommodating slots

114‧‧‧Bumps

115‧‧‧Packing block

121‧‧‧ brush bar

131‧‧‧Filling blocks

Claims (9)

An interdental brush process for improving the insertion position of a cleaning brush by using a bump, comprising the steps of: forming a handle in a mold by using an injection molding process, the front end of the handle is provided with a perforation, and a portion adjacent to the front end The axial direction is sequentially provided with a slot and a receiving slot, and the receiving slot can be exposed by the side of the handle, and one end of the slot can be communicated to the through hole, and the aperture of the receiving slot is The inner wall surface of the accommodating groove is convexly protruded from the inner wall surface of the accommodating groove, and the tip end of the convex block can correspond to the axis of the insertion slot; and a cleaning brush is inserted into the handle The cleaning brush includes a brush bar on which a plurality of bristles are disposed, and one end of the brush bar can sequentially pass through the through hole and the insertion slot, and protrude into the accommodating groove, and the squeak is touched The bump is bent to make the brush rod away from one end of the bristle from the axial position of the insert slot, so as to greatly increase the friction between the end of the brush bar and the handle, thereby greatly increasing the insertion of the cleaning brush. Positioning capability without easily coming off the perforated or inset slot. The process of claim 1, wherein after the cleaning brush is inserted into the handle, the process further comprises the following steps: performing a second injection molding process to form a package block in the receiving groove. The package block can cover the brush bar away from one end of the bristles and the bump. The process of claim 2, wherein the process further comprises the steps of: performing a third injection molding process to form a support outer casing on the side of the handle, the support casing being capable of shielding the package block and the receiving groove. The process of claim 3, wherein the hardness of the support shell is greater than the hardness of the handle. An interdental brush that utilizes a bump to lift a cleaning brush insert positioning capability, comprising: a handle that is bent adjacent to the front end to form a protrusion, and a cleaning rod sequentially protrudes into the perforation of the handle a fitting slot and a receiving slot, and in a state of being assembled to the handle, one of the cleaning rods is away from one end of the bristles to be in contact with the bump to cause bending. Deviating from the axial position of the insert slot, and greatly increasing the friction between the end of the brush bar and the handle, thereby greatly improving the insertion positioning capability of the cleaning brush without easily falling off from the perforation or the insertion slot. The interdental brush according to claim 5, wherein a bending angle of the portion of the brush bar adjacent to one end is between 5 and 25 degrees. The interdental brush according to claim 5 or 6, wherein the accommodating groove is exposed on a side of the handle, and the interdental brush further comprises a package block, and the package block is formed by injection molding. The accommodating groove covers the portion adjacent to the end of the brush bar and the bump. The interdental brush according to claim 7, wherein the interdental brush further comprises a supporting outer casing, and the supporting outer casing is formed on the side of the grip through an injection molding process to cover the packaging block and the capacity Set the slot. The interdental brush of claim 8, wherein the hardness of the support shell is greater than the hardness of the handle.