TW202131825A - Carrier body for a bristle insert, brush and method for producing a brush - Google Patents

Abstract

The invention relates to a carrier body (20) for a bristle insert (10), which is formed from two wire portions twisted together, the carrier body (20) comprising a guide opening (28), the cross-section of which is larger than the cross-section of the twisted wire of the bristle insert (10) to be attached to the carrier body (20), and an embedding surface (30), which is accessible in a direction lateral to the longitudinal direction of the guide opening (28), in particular perpendicularly to the longitudinal direction of the guide opening. The invention further relates to a brush, comprising a carrier body (20) of this type and comprising a bristle insert (10), which is fastened in the carrier body (20), the bristle insert (10) comprising two wire portions twisted together, which clamp a plurality of bristles between said wire portions in a bristle portion (12) and form an anchoring portion (14) in a portion free of bristles, which anchoring portion is received in the carrier body (20) and fastened there, characterized in that the anchoring portion (14) includes a bending portion (16; 17), in which the anchoring portion runs in at least one direction deviating from the longitudinal direction. Finally, the invention relates to a method for producing a brush of this type.

Description

Carrier for bristle insert, brush and method of manufacturing brush

The present invention relates to a carrier for bristle inserts, a brush with the carrier and bristle inserts, and a method of manufacturing the brush.

This kind of brush is a fine brush, such as a makeup brush, a mascara brush or an interdental brush. The commonality of these brushes is that they have a bristle insert. The support structure of the bristle insert is composed of a wire with a curved middle. 180°, and the two parts of the wire are twisted together, wherein, along a part of the wire, a large number of bristles are clamped between the two parts that are twisted together. The wire part with the bristles forms the bristles part, and the part without the bristles forms the anchoring part, and the anchoring part is fixed on or in the carrier.

There are a variety of techniques for fixing the anchoring part to the carrier. As we all know, the anchoring part is injection molded into the carrier. The disadvantage of this technology is that the cycle rate is extremely low, because the carrier with built-in bristle inserts must stay in the injection mold for a certain period of time until the injected injection material is fully cured. Even if a multi-point injection mold is used, which has multiple acupuncture points, its cycle rate is lower than the frequency of manufacturing bristle inserts. Therefore, before connecting the manufactured bristle insert to the carrier, the bristle insert must be temporarily stored. Alternatively, the tool that makes the bristle insert can be run at a slower speed than theoretically.

It is also known that the anchoring part is heated and pressed into the carrier material so that the anchoring part and the heated material are anchored in the carrier after recooling. The disadvantage of this method also lies in the extremely limited circulation rate, because the anchoring part takes some time to warm up and then cool down again.

Another method is to provide an anchor portion receiving groove in the carrier, and after the anchor portion is placed in the receiving groove, heat the material of the receiving groove to a softening temperature, and then squeeze the receiving groove from both sides. With this technology, high-frequency work is achieved.

However, it turns out that using the receiving slot and the other two methods have the following risks: the bristle inserts will be "twisted out" from the carrier. The reason is that there is no good adhesion connection between the carrier material and the wire of the anchoring part. Once the adhesion force between the wire and the carrier material is overcome, the anchoring part with the outer contour of the double helix due to the stranding of the wires will be opposite as a whole The carrier rotates.

The purpose of the present invention is to create a brush such as a makeup brush, a mascara brush, an interdental brush or the like, which is manufactured with a higher circulation rate, and the bristle inserts are reliably anchored on the carrier. The object of the present invention is also to create a method of manufacturing such a brush.

In order to achieve this objective, according to the present invention, a carrier for bristle inserts is created, wherein the bristle inserts are formed by two pieces of wire twisted with each other, the carrier has a guide hole, the cross section of the guide hole is larger than that to be installed The cross section of the stranded wire of the bristle insert on the carrier, as well as the embedding surface, can reach the embedding surface laterally to the longitudinal direction of the guide opening, especially perpendicular to the guide opening, in which natural materials are used as the carrier material . In order to achieve this objective, there is also provided a brush with such a carrier and a bristle insert, the bristle insert is fixed in the carrier, wherein the bristle insert has two sections of wire twisted with each other, and a large number of bristles are clamped in the bristle part Tightly between the two strands of stranded wire parts, and the two strands of stranded wire parts form an anchoring part in the bristleless part, the anchoring part is received and fixed in the carrier, characterized in that the anchoring part has a curved part, In the curved portion, the anchoring portion extends in at least one direction deviated from the longitudinal direction. In order to achieve this goal, a method is finally provided, in which such a carrier is provided first. Then, the anchoring part of the bristle insert is inserted into the guide opening of the carrier until the anchoring part is opposite to the embedding surface. Then start the ultrasonic generator and press the ultrasonic generator on the anchoring part, so that the anchoring part is pressed into the carrier by the ultrasonic generator, and is fixedly connected with the carrier, wherein the ultrasonic generating The anchor plastically deforms the anchoring part to form a curved part.

The present invention is based on the idea that the anchoring part is fixedly connected to the carrier by so-called ultrasonic embedding, and the anchoring part is plastically deformed in this process so that the anchoring part no longer extends continuously and straight. “Fixed connection” means that in the area in contact with the anchoring area of the bristle insert, the carrier material is locally deformed under the action of the vibration energy input and coupled by the ultrasonic generator and the pressure, and burns into the anchor Area.

Wood or bamboo is particularly suitable as a carrier material. The use of renewable raw materials can achieve a good ecological balance.

It has been found that if an ultrasonic generator is used to squeeze the anchoring part and the carrier against each other, the two will unexpectedly be firmly connected together. Although no scorch marks can be seen, the anchoring part seems to be wood/bamboo material burned into the carrier.

The deeper the anchoring part is pressed into or embedded in the material of the anchoring part, the stronger the anchoring part is fixed on the carrier.

Among them, the anchoring portion is preferably embedded in the carrier material, so that more than 20% and preferably more than 50% of the anchoring portion has a cross section lower than the height of the embedded surface.

The embedding surface is characterized in that before the bristle insert is installed (that is, it is not molded in the subsequently injected material), the embedding surface is present on the carrier, and the anchoring area plastically deforms the embedding surface, As a result, the anchoring area is embedded in the carrier material (and not only slightly deformed locally as a consequence of mechanical pressure, which acts on the surface of the carrier by the anchoring area).

This connection between the anchoring part and the carrier has various advantages. On the one hand, because the anchoring part itself does not need to be heated, the ultrasonic generator can make the energy required for the local connection of the anchoring part and the carrier material to be supplied in a very short time, so a very high circulation rate is achieved. Therefore, it is not necessary to clamp or hold the bristle inserts and the carrier together before the carrier material is cooled again, because the introduced energy is too small, and the material is fully cooled almost immediately after the ultrasonic generator is turned off; the wire acts as a heat sink The role of. The time required to fix the anchoring part on the carrier is less than one second, and particularly in the range of a fraction of a second. The anti-rotation protection is formed by the deformation of the anchoring part to ensure that the wire is no longer "twisted out" from the carrier. The undeformed remaining part of the anchoring part forms an anti-pull-out protection. Since most of the cross-section or substantially the entire cross-section of the anchoring part is embedded in the carrier, the overall holding force is achieved.

The embedding surface can be flat, and the curved portion of the anchoring portion can be designed as a concave "indent", which is pressed into the carrier material by the ultrasonic generator. For this purpose, the ultrasonic generator preferably has a protrusion that locally deforms the anchoring part into a curved part, which is embedded in the carrier material. The advantage of this embodiment is that the embedding surface of the carrier can be designed without undercuts.

It can also be provided that the embedding surface has recessed recesses. When the ultrasonic generator is pressed on the anchoring part, the ultrasonic generator deforms the anchoring part and enters the concave part. The advantage of this design is that there is no need to displace the carrier material to accommodate the curved part (except for a small amount of material that has to be displaced when the anchor part is embedded).

It can also be provided that the embedding surface has at least one portion extending obliquely to the longitudinal direction of the guide opening, in particular, the embedding surface is arranged offset relative to the guide opening. In this embodiment, a curved portion of the anchoring portion is thus produced, that is, the anchoring portion is displaced as a whole to a degree exceeding the embedded depth relative to a plane in which the anchoring portion is guided by the guide hole. The anchoring part is preferably displaced relative to the position specified by the guide opening by a distance which is greater than 200% of the diameter of the anchoring part.

According to an embodiment of the present invention, it is provided that the embedding surface is the bottom of the narrow slot. The side wall of the slot guides the anchoring part, so that the ultrasonic generator can be reliably passed through the slot and pressed onto the anchoring part, even if the ultrasonic generator is very narrow.

Just like the guide opening, the slot can extend straight in the same direction. This makes it easier to push the anchoring part into the slot and embedding surface.

It can also be provided that the slot is curved. Wherein, before the ultrasonic generator presses the anchoring part into the embedding surface, the anchoring part deforms with respect to its straight initial shape. Due to the curved profile of the anchoring part, it is not necessary to locally deform the anchoring part to obtain the required protection against unscrewing.

The slot preferably has a width of less than 2 mm, particularly preferably a width of less than 1 mm. With such a small width, it is not absolutely necessary to close the slot later, because this narrow slot does not affect the usability of the brush.

According to an alternative embodiment, it is provided that the embedding surface is the bottom of the inlet hole. This makes it possible to use a wider ultrasound generator to press the anchoring part into the embedding surface. If necessary, a locking element must be installed to make the carrier closed to the outside.

According to another alternative embodiment, the embedding surface is arranged under a plurality of channel openings that are separated from each other. With this design, the embedding surface is invisible or almost invisible from the outside; the passage opening can be made small, which can be used as a part of the design.

The guide opening preferably has a circular cross section, so that the anchoring portion of the bristle insert can be reliably guided. In principle, other cross-sections can also be used. The guide opening can also be designed as a slot, which guides the anchoring part laterally so that the anchoring part abuts against the embedding surface at a desired position.

The use of a closed guide port has the advantage that the guide part keeps all loads trying to "pull out" the anchoring part upward from the embedded surface away from the anchoring part. If the guide opening is designed as a slot, it is better to take preventive measures to prevent peeling force from acting on the anchoring part. The slot should either extend in a direction that prevents the anchoring part from being pulled out of the embedded surface (for example, parallel to the embedded surface), or the slot should be subsequently closed with a cover or the like to obtain a closed guide port.

In order to reliably guide the anchoring part, the cross section of the guide opening preferably matches the cross section of the anchoring part; the cross section of the guide opening is slightly larger. The cross-sectional area is preferably less than 2 mm ² , and especially less than 1 mm ² .

Figures 1a and 2a illustrate the bristle insert 10 and the carrier 20, if they are put together, they form a brush. The brush is a makeup brush, mascara brush or interdental brush.

The bristle insert 10 is composed of a wire section bent in the middle, so that two sections of equal length are obtained. The two equal length parts are twisted together. Among them, in one area, a large number of bristles are inserted between the two mutually twisted parts, so that the bristles are clamped between the wire parts.

These bristles form the bristle part 12. Outside the bristle portion 12 is a stranded wire portion without bristles.

The end of the twisted wire opposite to the bristle portion 12 forms an anchor portion 14 which is arranged to be fixedly connected to the carrier 20.

The carrier 20 is made of renewable materials, especially wood or bamboo, and the carrier 20 has a handle part 22 and a guide part 24.

A slot 26 is provided in the handle portion 22, and the slot 26 can be seen in a plan view in multiple bends and extensions, that is, it is wavy.

The slot 26 merges into a guide opening 28 on its side facing the guide portion, and the guide opening 28 passes through the guide portion 24.

The slot 26 extends from the outside of the handle part into the inside of the carrier 20. The bottom surface of the slot 26 constitutes an embedding surface 30. Thanks to the slot 26, the embedding surface 30 can be reached on the side (refer to the longitudinal direction of the guide opening 28), in particular in a direction perpendicular to the longitudinal direction of the guide opening 28.

The embedding surface 30 and the guide opening 28 are at the same height (to be precise, they are at the same height as the wall of the guide opening 28: the wall is away from the side of the carrier 20 where the slot 26 communicates with the outside). That is, the guide opening 28 merges directly and evenly into the embedding surface 30.

When the anchoring part 14 of the bristle insert 10 is pushed into the guide opening 28, the anchoring part 14 enters the slot 26. When advancing further, the anchoring portion 14 slides along the embedding surface 30, wherein the anchoring portion has a wave shape of the slot 26.

Figures 1b and 2b illustrate a second embodiment of the carrier 20. The same element symbols are used for the elements known from the foregoing embodiments, and in this respect, reference is made to the above explanation.

The difference from the first embodiment is that the slot 26 does not extend in a curved manner, but is straight and in the extension area of the guide opening 28.

Figure 3 illustrates another embodiment. The same element symbols are used for the elements known from the foregoing embodiments, and in this respect, reference is made to the above explanation.

The difference from the second embodiment is that a recess 32 is provided between the insertion surface 30 and the guide opening 28. The depth of the recess 32 is greater than 100% of the diameter of the anchoring portion 14 of the bristle insert 10. The width of the recess 32 (measured perpendicular to the advancing direction and perpendicular to the depth direction) corresponds to the width of the slot 26 that is in contact with the recess and the width of the embedding surface 30.

In order to prevent the anchoring portion 14 from hanging on the edge of the recess 32, a chamfer 34 is provided at the transition to the embedding surface 30.

Hereinafter, how the bristle insert 10 is fixed to the carrier 20 will be explained in general with reference to FIGS. 4a to 4e. And here, the same element symbols are used for the elements known from FIGS. 1 to 3, and in this respect, reference is made to the above explanation.

In the first step, the anchoring part of the bristle insert 10 is pushed into the carrier (Figure 4a), to be precise, through the guide opening 28 until it enters the slot, so that the anchoring part 14 is located on the embedding surface 30 (Figures 4b and 4c) .

Then push the ultrasonic generator 60 into the slot from the outside (FIG. 4d) and continue to advance until the ultrasonic generator 60 abuts on the anchoring part 14.

The shape and size of the ultrasonic generator 60 conform to the shape and size of the socket 26 (or a slightly smaller size), so that the ultrasonic generator is guided to the anchoring portion 14 of the bristle insert 10.

The ultrasonic generator 60 is activated so that it transmits ultrasonic vibrations to the anchor portion 14. The friction with the material of the carrier 20 causes the material to generate heat. Due to the mechanical pressure exerted by the ultrasonic generator 60 on the anchoring portion 14, the anchoring portion 14 is pressed into the heated material of the carrier 20 and connected with the heated material.

This embedding process can continue until the two wire parts of the anchoring part 14 are (at least almost) completely sunk into the carrier. To put it another way: after the anchoring part is embedded in the carrier material, it is (at least almost) completely under the embedding surface 30 (see Figure 4e). If the material of the carrier is relatively hard, it is also possible to press only a part of the anchoring part into the embedding surface. Facts have proved that even in this case, there is still a very high and sufficient pullout force anyway.

Hereinafter, referring to Figs. 5a to 5c, it is explained how the anchoring portion 14 is fixed to the carrier, which has a recess 32 known from Figs. 1b and 2b. The cross-sectional shape of the recess 32 here is slightly different from that of FIG. 3, that is, it is a V-shape.

The bristle insert 10 is pushed into the carrier 20 in the same way as described with reference to Figures 4a to 4c. The foremost region of the anchoring portion is suspended on the recess 32.

The ultrasonic generator 60 used here is provided with a deforming protrusion 62, if the ultrasonic generator 60 is pressed onto the anchoring part 14, the deforming protrusion will locally squeeze the anchoring part 14 into the recess 32. As a result, a concave curved portion 16 is formed on the anchoring portion 14.

The curved portion 16 is squeezed into the material of the carrier 20 by the ultrasonic generator in the same manner as the remaining (straight) portion of the anchoring portion 14.

The curved portion 16 improves the anchoring force of the material of the carrier 20 on the anchoring portion 14. In particular, the bent portion 16 prevents the anchor portion 14 from being screwed out of the material of the carrier 20.

If the slot 26 is extremely narrow, it does not have to be closed. Since the depth of the slot is much greater than the width, the anchoring portion 14 at the bottom of the slot is not visible or hardly visible.

As an alternative to the method in which the ultrasonic generator deforms the anchoring portion 14 during the embedding process, it can be provided that two different tools are used to sequentially perform the steps of deformation and embedding. This is particularly suitable for the following situations: when the wire is too thick, it is better to use a tool specially designed for this purpose that is slightly stronger than the fragile ultrasonic generator for deformation.

In this alternative method, the anchoring part is pushed onto the embedding surface, then deformed by the indenter, and then pressed into the embedding surface by the ultrasonic generator.

An alternative design of the carrier 20 and the connection of the bristle insert 10 to this carrier 20 are explained with reference to FIGS. 6a and 6b. The same element symbols are used for the elements known from the foregoing embodiments, and in this respect, reference is made to the above explanation.

The embedding surface 30 here merges into the guide opening 28 flatly and without recesses or the like. In the area where the bending portion 16 needs to be generated on the anchoring portion 14, an ultrasonic generator 60 with a deforming protrusion 62 is provided. Here, when the activated ultrasonic generator 60 is pressed on the anchoring portion 14, the anchoring portion 14 is deformed to penetrate into the material of the carrier 20 and assume a shape opposite to the contour of the deforming protrusion 62 therebetween.

Here, the deformation protrusion 62 is shown in the vicinity of the guide opening 28. However, it is also possible to attach the deforming protrusion 62 to a position farther away from the guide opening 28. However, it is beneficial to place the curved part as close as possible to the guide opening and thus as close as possible to the part of the bristle insert 10 on which a possible torque is introduced. This ensures that the torque is intercepted by the curved part, and the part of the anchoring part located "behind" the curved part is not subjected to torque, but is used to transmit tensile force.

With reference to FIGS. 7a and 7b, another embodiment of the carrier 20 and the resulting slightly different way of fixing the connecting part on the carrier will be explained. The same element symbols are used for the elements known from the foregoing embodiments, and in this respect, reference is made to the above explanation.

The difference from the previous embodiments is that, in the embodiment in FIGS. 7a and 7b, the embedding surface 30 is at a height lower than the height of the guide opening 28. If the anchoring portion 14 is advanced through the guide opening 28, the anchoring portion is initially exposed above the embedding surface 30.

When the ultrasonic generator 60 is pressed onto the anchoring portion 14, the ultrasonic generator 60 first presses the anchoring portion 14 down onto the embedding surface. Among them, the wire is bent at the transition to the area of the bristle insert 10 located in the guide opening 28, and thus the bent portion 17 is formed here. The difference from the foregoing embodiment in which the curved portion 16 is concave is that the curved portion 17 is inclined in only one direction because the curved portion 17 must span the height offset between the guide opening 28 and the embedding surface.

Then the ultrasonic generator is activated to press the anchoring portion 14 into the material of the carrier 20. The deformation of the curved portion 17 is strengthened, because the curved portion 17 now also has to additionally span the embedding depth.

In the area where the curved portion 17 is generated, the carrier will tilt. Alternatively, the curved portion 17 itself forms its own path under the action of the ultrasonic generator 60.

If a wider groove is used instead of the slot, or the slot should be closed despite its small width, the groove can be closed again after the anchoring portion 14 is pressed into the material of the carrier 20. For this purpose, a blocking member 40 (see FIGS. 8a and 8b) can be used, and the blocking member 40 is fixedly mounted on the carrier 20 in any suitable manner (here shown as an indenter 70). This corresponds to the embodiment of FIG. 5 here.

For the carrier 20 whose embedding surface 30 is offset with respect to the guide opening 28 as shown in FIG. 7, a blocking member 40 can also be used. These diagrams are shown in Figures 9a and 9b.

Figures 10a to 10d illustrate an alternative embodiment of the carrier 20. The same element symbols are used for the elements known from the foregoing embodiments, and in this respect, reference is made to the above explanation.

The difference between the foregoing embodiment and the embodiment of FIG. 10 is that there is no slot for the ultrasonic generator to pass through and pressed onto the anchoring part 14 but a wider inlet hole 29 is provided here. The bottom of the entry hole is the embedding surface 30. Correspondingly, the blocking member here is in the form of a plate.

FIG. 11 illustrates another design of the ultrasonic generator 60. The difference from the known ultrasonic generator in FIG. 6 is that a deformed protrusion 63 is used, which is not V-shaped or pointed, but has a circular profile.

FIG. 12 illustrates still another implementation variant of the ultrasonic generator 60. The difference from FIG. 11 is that three pointed deforming protrusions 62 are provided here to form three curved parts, which are deeply embedded in the material of the carrier 20.

Figures 13 and 14 illustrate a carrier 20 and a bristle insert 10 according to another embodiment. The same element symbols are used for the elements known from the foregoing embodiments, and in this respect, reference is made to the above explanation.

The difference between the embodiment of the carrier 20 in FIG. 13 and other carrier embodiments is that, in the embodiment of FIG. 13, the passage to the embedding surface 30 is not realized by a single slot, but by A plurality of independent passage openings 27 that are separated from each other. They extend like a ventilation shaft in a mine that leads to a tunnel; the embedded surface 30 is arranged on the bottom of the tunnel to be ventilated.

In order to achieve anti-twist protection for the anchoring portion 14 of the bristle insert 10, several passage openings 27 are designed so deep that a recess 32 known for example from the embodiment of FIG. 3 is formed.

The outline of the anchoring portion 14 of the bristle insert 10 which is pressed into the embedding surface 30 and fixed there can refer to FIG. 14. Corresponding to the two recesses 32 on the anchoring surface, the anchoring portion 14 has two “dents”. In the initial state, that is, before the anchoring portion 14 is pushed into the carrier and connected to the carrier, the anchoring portion extends linearly.

As an example of the ultrasonic generator 60, for the carrier 10 with a plurality of passage openings 27, the anchor portion 14 is deformed and connected with the embedding surface 30 by the ultrasonic generator, as shown in FIG. 15. The ultrasonic generator 60 has a plurality of pins 61, each of the plurality of pins 61 extends through one of the passage openings to enter the carrier 20, and is pressed against the anchor portion 14 there. The pin 61 is designed to have an appropriate length, that is, it is longer where the recess 32 is provided.

Unlike the foregoing embodiment in which the ultrasonic generator 60 presses the anchoring portion 14 into the embedding surface 30 unimpededly, a plurality of separate positions are generated here. In these multiple positions, the anchoring portion 14 and the carrier 20 The material connection. Facts have proved that the ideal high retention force can also be achieved in this way.

It can be seen in Figures 16a to 16d how the bristle insert 10 and the carrier 20 having a plurality of separate passage openings 27 are connected.

The straight anchoring portion 14 of the bristle insert 10 is pushed into the guide opening 28 so that the anchoring portion 14 is on the embedding surface 30 (Figures 16a and 16b).

Then, the anchoring portion 14 is heated by the ultrasonic generator 60 as shown in FIG. 15 and pressed against the material of the carrier 20, wherein the anchoring portion is plastically deformed corresponding to the existing recess 32 (see FIGS. 16c and 16d). Furthermore, similar to the embodiment of FIGS. 7 a and 7 b, a curved portion 17 is formed that spans the height offset between the guide opening 28 and the embedding surface 30.

The cross section of the passage opening 27 is very small, so it is not necessary to use a separate blocking member to close the passage opening 27.

Figures 17a to 17b illustrate different variants of the brush, in which in addition to the plurality of passage openings 27, there are also a plurality of small notches 80. These small notches are used to increase grip. Each of these small recesses 80 has a cross-section corresponding to the cross-section of the passage opening 27. Thus, these passage openings 27 are distinguished from each other only by the depth of their small notches 80; the anchoring portion 14 can be seen at the bottom of the small notches. The cross-section of the passage openings is quite small, so there is no need to close the passage openings; these passage openings can hardly be identified as passage openings in the large number of notches 80.

The particular advantage of the carrier and brush according to the present invention is that it achieves a good ecological balance and a high degree of sustainability based on the renewable raw materials used for the carrier (especially wood and bamboo). It is also not necessary to use bonding materials or other chemical products; only the applied pressure and the generated heat can achieve a strong mechanical connection between the anchoring portion 14 of the bristle insert 10 and the material of the carrier 20.

10: Bristle inserts 12: The bristle part 14: Anchor part 16: curved part 17: curved part 20: Carrier 22: handle part 24: Guiding part 26: Slot 27: Channel port 28: Pilot hole 30: Embedded surface 32: recess 34: chamfer 40: Locking parts 60: Ultrasonic generator 61: pin 62: pointed deformation bump 63: round deformation bump 70: Indenter 80: small notch

Hereinafter, the present invention will be explained based on various different embodiments, which are shown in the accompanying drawings. In the schema:

-Figure 1a shows a top view of a carrier according to the first embodiment and a bristle insert to be mounted on the carrier;

-Figure 1b shows a top view of the carrier according to the second embodiment and the bristle inserts to be mounted on the carrier;

-Figure 2a is a perspective sectional view of the carrier and bristle insert of Figure 1a;

-Figure 2b is a perspective view of the carrier and bristle inserts of Figure 1b;

-Figure 3 illustrates in a cross-sectional view a carrier according to a third embodiment and a bristle insert to be mounted on the carrier;

-Figures 4a to 4e schematically illustrate different steps of installing the bristle inserts to the carrier, and enlarged cross-sectional views of the carrier with the anchoring part embedded therein;

-Figures 5a to 5c show the different steps of installing the bristle inserts to the carrier, the implementation of which is similar to the carrier in Figure 3;

-Figures 6a and 6b schematically illustrate the installation of bristle inserts onto a carrier according to an alternative embodiment;

-Figures 7a and 7b schematically illustrate the installation of a bristle insert onto a carrier according to another embodiment;

-Figures 8a and 8b are two steps of installing the locking member to the carrier in Figure 5;

-Figures 9a and 9b are the two steps of installing the locking member to the carrier in Figure 7;

-Figures 10a to 10d are the side and top views of the mounting of the locking member to the carrier according to another embodiment and the completed brush;

-Figure 11 schematically illustrates the installation of the bristle insert by an ultrasonic generator according to another technical solution;

-Figure 12 schematically illustrates the installation of the bristle insert by an ultrasonic generator according to yet another technical solution;

-Figure 13 is a cross-sectional view of a carrier according to another embodiment;

-Figure 14 illustrates a side view of the bristle insert anchored to the carrier of Figure 13;

-Figure 15 is an ultrasonic generator used to fix the bristle insert of Figure 14 in the bristle carrier of Figure 13;

-Figures 16a to 16d are a side view, two schematic views and a cross-sectional view of the different steps of fixing the bristle insert to the carrier similar to the embodiment of Figure 13; and

-Figures 17a to 17d are different variants of the brush according to another technical solution, wherein the carrier is based on the embodiment of Figure 13.

Domestic deposit information (please note in the order of deposit institution, date and number) without Foreign hosting information (please note in the order of hosting country, institution, date, and number) without

10: Bristle inserts

12: The bristle part

14: Anchor part

20: Carrier

26: Slot

30: Embedded surface

60: Ultrasonic generator

62: pointed deformation bump

Claims (21)

A carrier (20) for a bristle insert (10), the bristle insert is formed by two sections of wire twisted with each other, wherein the carrier (20) has a guide hole (28), the cross section of the guide hole The cross section of the stranded wire of the bristle insert (10) to be installed on the carrier (20) is larger than the cross section, and there is an embedding surface (30), which can be lateral to a direction of the longitudinal direction of the guide opening (28) , Especially perpendicular to the longitudinal direction of the guide opening to reach the embedding surface, especially perpendicular to the guide opening, wherein the carrier (20) is made of a natural material. The carrier (20) according to claim 1, wherein the carrier is composed of wood or bamboo. The carrier (20) according to claim 1 or 2, wherein: The embedding surface (30) is flat. The carrier (20) according to claim 1 or 2, wherein: The embedding surface (30) is arranged offset relative to the guide opening (28). The carrier (20) according to claim 4, wherein the embedding surface (30) has at least one part extending obliquely to the longitudinal direction of the guide opening (28). The carrier (20) according to claim 1 or 2, wherein: The embedding surface (30) has a concave recess (32). The carrier (20) according to claim 1 or 2, wherein the embedded surface (30) is the bottom of a narrow slot (26). The carrier (20) according to claim 7, wherein the slot (26) extends straight in the same direction as the guide opening (28). The carrier (20) according to claim 7, wherein the slot (26) is curved and extended. According to the carrier (20) described in claim 7, Wherein, the width of the slot (26) is less than 2 mm, and preferably less than 1 mm. The carrier (20) according to claim 1, wherein the embedding surface (30) is the bottom of an inlet hole. The carrier (20) according to one of the preceding claims, wherein the embedding surface (30) is arranged under a plurality of mutually separated passage openings (27). According to the carrier (20) described in claim 1, Wherein, the guide opening (28) has a circular cross section. The carrier (20) according to claim 13, wherein the cross-sectional area of the guide opening (28) is less than 2 mm ² , especially less than 1 mm ² . A brush with a carrier (20) and a bristle insert (10) according to one of the preceding claims, the bristle insert is fixed in the carrier (20), wherein the bristle insert (10) has Two mutually twisted wire parts, a bristle part (12) clamps a large number of bristles between the two wire parts, and the two wire parts form an anchoring part (14) in a bristleless part, The anchoring portion is received in the carrier (20) and fixed there, characterized in that the anchoring portion (14) has a curved portion (16; 17), in the curved portion, the anchoring portion along at least one Extend in a direction deviating from the longitudinal direction. The brush according to claim 15, wherein the anchoring portion (14) is embedded in the material of the carrier (20) so that more than 50% of the cross-section of the anchoring portion (14) is at the level of the embedded surface (30) Below the height. The brush according to claim 15 or claim 16, wherein the curved part is a deflecting part (17) so that the anchoring part (14) is offset from the anchoring part (14) relative to the height of the guide opening (28) ) More than 200% of the diameter. The brush according to claim 17, wherein the curved portion (16) is concave. A method for manufacturing a brush according to one of claims 15 to 18 according to the following steps: -Provide a carrier (20) according to one of the claims 1 to 14, -Insert the anchoring part (14) of the bristle insert (10) into the guide opening (28) until the anchoring part is opposite to the embedding surface (30), -Activate an ultrasonic generator (60), and press the ultrasonic generator on the anchoring part (14), so that the anchoring part (14) is pressed into by the ultrasonic generator (60) In the carrier (20) and fixedly connected with the bristle carrier, the ultrasonic generator (60) plastically deforms the anchoring part (14) to form the curved part (16; 17). The method according to claim 19, wherein the ultrasonic generator (60) plastically deforms the anchoring part (14) until the anchoring part is flat against the embedding surface (30). The method according to claim 19 or claim 20, wherein the anchoring portion (14) is partially pressed into a recess (32) of the embedding surface (30) by the ultrasonic generator (60).

Images