CN211407994U

CN211407994U - Brush head

Info

Publication number: CN211407994U
Application number: CN201921254976.6U
Authority: CN
Inventors: 罗宁; 蔡延钟
Original assignee: Cixi Saijia Electronics Co ltd
Current assignee: Cixi Saijia Electronics Co ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-09-04
Anticipated expiration: 2029-08-05

Abstract

The utility model provides a brush head, brush head includes: a brush bar; the fixing plate is connected to the head of the brush rod and provided with a first through hole and a brush wire mounting hole, and the first through hole is surrounded by the brush wire mounting hole; the brush wire is inserted into the brush wire mounting hole and fixedly connected to the fixing plate, and the brush wire extends from the front side of the fixing plate; the polishing element is fixedly connected to the brush rod, extends from the front side of the brush rod, penetrates through the first through hole to enable the fixing piece to be sleeved on the polishing element, and is surrounded by the brush wires. Through adopting above-mentioned technical scheme, connect the brush silk in the stationary blade, can polish the processing back at the brush silk and connect the stationary blade in the brush-holder stud of having installed polishing component again to polishing component when having avoided polishing the processing, lead to damaging the problem of polishing component.

Description

Brush head

Technical Field

The utility model relates to the field of cleaning appliances, in particular to a brush head.

Background

Prior art toothbrushes or powered toothbrush heads include tufts, stems and other functional elements such as elastomeric polishing elements that have a polished tooth surface. The polishing element of the existing toothbrush and the electric toothbrush head and the top end of the brush filament form a certain fall, for example, the top end of the brush filament is higher than the polishing element by more than 2mm, because in the process of manufacturing the toothbrush head, the polishing element is fixed on the brush rod after the brush rod is molded, and then the brush filament is connected to the brush rod by bristle planting and the top end of the brush filament is ground by bristle grinding treatment. If the tips of the brush filaments and the polishing member do not form a drop, the polishing member is easily ground during sanding, so that the polishing member is damaged.

SUMMERY OF THE UTILITY MODEL

Based on the problem among the above-mentioned prior art, the utility model aims at providing a brush head, makes brush silk and polishing component separately install, can not influence polishing component when carrying out the sanding to the brush silk.

The utility model provides a brush head, brush head includes:

a brush bar;

the fixing plate is connected to the head of the brush rod and provided with a first through hole and a brush wire mounting hole, and the first through hole is surrounded by the brush wire mounting hole;

the brush wire is inserted into the brush wire mounting hole and fixedly connected to the fixing plate, and the brush wire extends from the front side of the fixing plate;

the polishing element is fixedly connected to the brush rod, extends from the front side of the brush rod, penetrates through the first through hole to enable the fixing piece to be sleeved on the polishing element, and is surrounded by the brush wires.

Preferably, the polishing elements are lower than the free ends of the brush filaments located around the polishing elements, and their difference in height is less than or equal to 2 mm.

Preferably, the polishing elements and the free ends of the brush filaments located around the polishing elements are in the same plane or the polishing elements protrude from the free ends of the brush filaments around the polishing elements.

Preferably, the polishing element is provided with a cavity for containing a cleaning agent, which cavity is provided with an opening towards the front side.

Preferably, the head of the brush rod is provided with a groove, an opening of the groove faces to the front side, and the fixing piece is installed in the groove.

Preferably, the polishing element is provided with a fixing portion, the bottom of the groove is provided with a positioning groove, and the fixing portion is embedded into the positioning groove so that the polishing element is fixedly connected to the brush rod.

Preferably, the polishing member is provided with a fixing portion, the bottom of the recess is provided with a second through hole, the polishing member passes through the second through hole from the rear side of the brush bar, and the fixing portion is caught at the edge of the second through hole to connect the polishing member to the brush bar.

Preferably, the free ends of the brush filaments are ground before the burnishing element and the fixing plate are fitted together.

Preferably, the polishing element is provided with a cavity for accommodating a cleaning agent, which cavity is provided with a rest mouth towards the front side.

Preferably, the free ends of the brush filaments form undulations or slopes.

Through adopting above-mentioned technical scheme, connect the brush silk in the stationary blade, can polish the processing back at the brush silk and connect the stationary blade in the brush-holder stud of having installed polishing component again to polishing component when having avoided polishing the processing, lead to damaging the problem of polishing component.

Drawings

Fig. 1 shows a schematic view of a brush head according to a first embodiment of the invention.

Figure 2 shows an exploded view of a brush head according to a first embodiment of the invention.

Figure 3 shows a partial cross-sectional view of a first embodiment of a brush head according to the present invention.

Figure 4 shows a schematic view of the polishing elements of a brush head and a brush bar joined together according to a first embodiment of the invention.

Fig. 5 shows a schematic view of the connection of the filaments of the brush head and the fixing plate according to the first embodiment of the present invention.

Fig. 6 shows an enlarged view of a portion a in fig. 5.

Figure 7 shows a schematic view of the polishing elements of a brush head according to a second embodiment of the invention connected to a brush rod.

Description of the reference numerals

1 brush rod 11 head 12 tail 13 groove 14 second through hole

2 polishing element 21 cavity 22 holding part

3 free ends of brush filaments 31

4 fixing piece 41 brush wire mounting hole 42 support portion 43 first through hole 44 flange portion

5 tongue coating cleaning part.

Detailed Description

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the detailed description is only intended to teach one skilled in the art how to practice the invention, and is not intended to exhaust all possible ways of practicing the invention, nor is it intended to limit the scope of the invention.

(first embodiment)

As shown in fig. 1 to 6, the present invention provides a brush head, which comprises a brush bar 1, polishing elements 2 and brush filaments 3. The brush bar 1 may be in the form of an elongated rod, the brush bar 1 having a head portion 11 and a tail portion 12 at opposite ends of the brush bar 1 in the lengthwise direction, and the polishing elements 2 and the brush filaments 3 being disposed on the head portion 11 of the brush bar 1. The brush bar 1 has a front side and a rear side, and the front and rear side surfaces of the brush bar head 11 may be substantially parallel planes.

The brush head of the utility model can be a toothbrush, the polishing elements 2 and the brush wires 3 used for cleaning teeth are arranged on the brush rod head 11 and extend to the front side, the back side surface of the brush rod head 11 can also be provided with a tongue fur cleaning part (not shown) used for cleaning tongue fur, and the tongue fur cleaning part can be convex elastic particles.

It will be appreciated that the brush bar 1 may be the handle of a manual toothbrush and the brush bar 1 may also be the body of a replaceable brush head of an electric toothbrush.

As shown in fig. 2 to 4, the front side of the brush bar head 11 is provided with a recess 13 for receiving the fixing piece 4. The polishing element 2 is fixedly attached to the bottom of the recess 13, for example the polishing element 2 is attached to the bottom of the recess 13 by injection moulding. The polishing elements 2 are made of an elastic material, such as rubber, and the polishing elements 2 are radially deformable when pressed against the teeth.

The polishing member 2 is provided with a fixing portion 22, the cross-sectional area of the fixing portion 22 being larger than the cross-sectional area of the polishing member 2, the polishing member 2 being attached to the bottom of the groove 13 by the fixing portion 22. Further, the bottom of the recess 13 is provided with a positioning groove for mounting the fixing portion 22, and the mounting position of the polishing element 2 can be determined by fitting the fixing portion 22 into the positioning groove, which helps accurately mount the polishing element 2 to a predetermined position, and the fixing portion 22 can protrude from the opening of the positioning groove.

The polishing member 2 is attached to a substantially central position of the groove 13. The polishing element 2 is cylindrical, in particular cylindrical, with a cavity 21. The cavity 21 is provided with an opening towards the front side, in which cavity 21 a cleaning agent, such as toothpaste, can be accommodated and dispensed from the front end of the cavity 21 into the oral cavity during brushing, thereby assisting cleaning of the oral cavity. The polishing member 2 extends vertically from the bottom of the groove 13 to the front side, and the axis of the polishing member 2 is substantially perpendicular to the bottom surface of the groove 13.

As shown in fig. 1 to 3, 5 and 6, the brush wires 3 are fixedly connected to the fixing plate 4, the fixing plate 4 is provided with brush wire mounting holes 41 for mounting the brush wires 3, the brush wire mounting holes 41 are provided in a plurality, and the brush wire mounting holes 41 may be circular, long-strip-shaped, arc-shaped, and the like. A plurality of brush filaments 3 are fixed in the same brush filament mounting hole 41 so that the brush filaments 3 form a tuft, and one end of the brush filaments 3 are inserted into the brush filament mounting hole 41 and are fusion-formed integrally with the fixing piece 4. The free ends of the brush filaments 3 are ground smooth and burr-free to avoid sharp edges damaging soft tissues and enamel in the mouth.

Further, a support portion 42 may be provided at a peripheral portion of at least a part of the filament mounting hole 41, the support portion 42 may protrude forward from a front side surface of the other portion of the fixing sheet 4 to surround the filament 3 or the tuft, and the support portion 42 may provide support for the filament 3 mounted in the filament mounting hole 41 to prevent the filament 3 from being bent toward the support portion 42. Preferably, a support portion is provided near the brush attachment hole 41 of the polishing member 2, for example, the brush attachment hole 41 at a position spaced apart from the polishing member 2 by one hole is provided with a support portion 42. The support portion 42 may be formed in a closed ring shape around the circumference of the filament mounting hole 41, or may be formed in an arc shape only on one side of the filament mounting hole 41, particularly on the side away from the polishing member 2.

The peripheral edge portion of the fixing piece 4 protrudes rearward to form a flange portion 44, the flange portion 44 contacts the bottom of the recess 13, and the fixing piece 4 is connected to the brush holder 1 via the flange portion 44. For example, the flange portion 44 of the fixing plate 4 and the brush bar 1 may be joined together by ultrasonic welding.

The fixing piece 4 is provided with a first through hole 43, the first through hole 43 being located at a central position of the fixing piece such that the filament mounting hole 41 surrounds the first through hole 43, and the polishing member 2 can pass through the first through hole 43 such that the fixing piece is received in the recess 13

Preferably, the polishing elements 2 are not lower than the height of the free ends of the brush filaments 3, and the polishing elements 2 may be in the same plane as the free ends of the brush filaments 3 located around the polishing elements 2 or protrude from the free ends of the brush filaments 3 located around the polishing elements 2. When brushing teeth, the brush wires 3 and the polishing elements 2 can contact the treated areas of the teeth, so that the toothbrush can achieve good cleaning and whitening effects. It will be understood that the polishing elements 2 may also be located lower than the free ends of the brush filaments 3 located around the polishing elements 2 and that their difference in height may be less than or equal to 2mm, so that both the brush filaments 3 and the polishing elements 2 can contact the treated area of the teeth.

The method of making the brush head of the above embodiment is described below.

And (4) polishing the free ends of the brush wires 3, and removing burrs to ensure that the free ends of the brush wires 3 are smooth and have no edges and corners. The brush wires 3 are then mounted on the fixing plate 4, for example, one ends of the brush wires 3 are inserted into the wire mounting holes 41 and are fused with the fixing plate 4 to form a whole, and the free ends of the brush wires 3 can be formed in a wavy or sloping shape, and the wavy brush wires 3 easily touch the gaps between teeth when cleaning the teeth, thus having a good cleaning effect. For example, the free ends of the brush filaments 3 may be formed in a ramp-like or saw-tooth shape.

The polishing element 2 is mounted on the brush bar 1, and the fixing portion 22 of the polishing element 2 is fitted into the positioning groove at the bottom of the recess 13, so that the fixing portion 22 can be connected to the positioning groove by injection molding.

It will be appreciated that there is no restriction on the order in which the filaments 3 are mounted to the stator 4 and the polishing elements 2 are mounted to the brush bar 1, and that the order of these two steps does not affect the manufacture of the brush head.

The polishing member 2 is passed through the first through-hole 43 of the fixing piece 4 having the brush filaments 3 mounted thereon, the fixing piece 4 is fitted into the recess 13, and the fixing piece 4 and the brush bar 1 are fixedly connected, for example, by ultrasonic welding.

It will be understood that if the polishing member 2 and the free ends of the brush filaments 3 around the polishing member 2 are in the same plane or protrude from the free ends of the brush filaments 3 around the polishing member 2, the polishing member 2 is ground while grinding the brush filaments 3, possibly resulting in damage to the polishing member 2. The utility model discloses a preparation method of brush head can be after the brush silk 3 of polishing, will polish component 2 and brush silk 3 installation together, and the brush silk 3 of polishing just can not cause the influence to polishing component 2 like this.

(second embodiment)

The overall structure of the brush head according to the second embodiment of the present invention is the same as the overall structure of the brush head according to the first embodiment of the present invention. In the present embodiment, the same or similar components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

As shown in fig. 7, the bottom of the groove 13 of the brush bar 1 is provided with a second through hole 14, and the polishing member 2 can pass through the second through hole 14.

The polishing member 2 is provided with a fixing portion 22, and the cross-sectional area of the fixing portion 22 is larger than that of the polishing member 2 so that the fixing portion 22 cannot pass through the second through-hole 14. Further, the fixing portion 22 may be stepped, a small diameter portion of the fixing portion 22 is inserted into the second through hole 14 and is fitted with the second through hole 14 to radially position the polishing member 2, and a large diameter portion of the fixing portion 22 cannot pass through the second through hole 14 to axially position the polishing member 2. Further, the tongue coating cleaning portion 5 may be located at the rear side of the fixing portion 22.

The method of making the brush head of the above embodiment is described below.

The brush wires 3 are attached to the fixing piece 4, and for example, one ends of the brush wires 3 are inserted into the brush wire attachment holes 41 and are fusion-formed integrally with the fixing piece 4. Then, the free ends of the brush filaments 3 can be cut to make the length of the brush filaments 3 suitable and the free ends of the brush filaments 3 can form undulations or slopes, and the undulated brush filaments 3 can easily make the brush filaments 3 touch gaps between teeth when cleaning the teeth, so that the cleaning effect is good. For example, the free ends of the brush filaments 3 may be formed in a ramp-like or saw-tooth shape. After the brush wires 3 are cut, the free ends of the brush wires 3 need to be polished, and burrs are removed to enable the surfaces of the free ends of the brush wires 3 to be smooth and have no edges and corners.

The polishing member 2 is mounted to the brush bar 1, and the polishing member 2 is inserted into the second through-hole 14 at the bottom of the recess 13 from the rear side to the front side, so that the polishing member 2 is positioned in the second through-hole 14, and the fixing portion 22 can be coupled to the brush bar 1 by injection molding.

The utility model discloses a preparation method of brush head can be after the brush silk 3 of polishing, will polish component 2 and brush silk 3 installation together, and the brush silk 3 of polishing just can not cause the influence to polishing component 2 like this.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. A brush head, characterized in that the brush head comprises:

a brush bar (1);

a fixing plate (4), wherein the fixing plate (4) is connected to the head (11) of the brush rod (1), the fixing plate (4) is provided with a first through hole (43) and a brush wire mounting hole (41), and the first through hole (43) is surrounded by the brush wire mounting hole (41);

the brush wire (3) is inserted into the brush wire mounting hole (41) and fixedly connected to the fixing plate (4), and the brush wire (3) extends from the fixing plate (4) to the front side;

the polishing element (2) is fixedly connected to the brush rod (1), the polishing element (2) extends from the front side of the brush rod (1), the polishing element (2) penetrates through the first through hole (43) to enable the fixing piece (4) to be sleeved on the polishing element (2), and the polishing element (2) is surrounded by the brush wires (3).

2. A brush head according to claim 1, characterized in that the polishing elements (2) are lower than the free ends of the brush filaments (3) located around the polishing elements (2) and their difference in height is less than or equal to 2 mm.

3. A brush head according to claim 1, characterized in that the polishing elements (2) and the free ends of the brush filaments (3) located around the polishing elements (2) are in the same plane or that the polishing elements (2) protrude from the free ends of the brush filaments (3) around the polishing elements (2).

4. A brush head according to claim 1, characterized in that the polishing element (2) is provided with a cavity (21) for receiving a cleaning agent, which cavity (21) is provided with an opening towards the front side.

5. A brush head according to claim 1, characterized in that the head (11) of the brush bar (1) is provided with a groove (13), the opening of the groove (13) facing towards the front side, the fixing plate (4) being mounted in the groove (13).

6. A brush head according to claim 5, characterized in that the polishing element (2) is provided with a fixing portion (22), the bottom of the recess (13) being provided with a positioning groove, the fixing portion (22) being embedded in the positioning groove so that the polishing element (2) is fixedly connected to the brush bar (1).

7. A brush head according to claim 5, characterized in that the polishing element (2) is provided with a fixing portion (22), the bottom of the recess (13) is provided with a second through hole (14), the polishing element (2) passes through the second through hole (14) from the rear side of the brush rod (1), and the fixing portion (22) is clamped at the edge of the second through hole (14) to connect the polishing element (2) to the brush rod (1).

8. A brush head according to any one of claims 1-7, characterised in that the free ends of the brush filaments (3) are ground before the polishing element (2) and the fixing plate (4) are fitted together.

9. Brush head according to any one of claims 1 to 7, characterized in that the polishing element (2) is provided with a cavity (21) for accommodating a cleaning agent, which cavity (21) is provided with a rest mouth towards the front side.

10. A brush head according to any one of claims 1-7, characterized in that the free ends of the brush filaments (3) form an undulation or slope.