Replaceable brush head for electric toothbrush

Abstract

The utility model discloses a replaceable brush head for an electric toothbrush, which relates to the technical field of toothbrush heads, and particularly structurally comprises a brush handle, a brush head, a brush rod and a brush head, the flexible pull rod assembly is arranged in the brush handle; the brush head seat is mounted at the top of the brush handle, and the inner wall of the brush head seat is connected with the top of the flexible pull rod assembly; the spring is sleeved on the flexible pull rod assembly; the limiting strip is arranged on the inner wall of the containing cavity, and the bottom of the limiting strip is matched with the spring. The technical problems that the internal structure of an existing brush head is complex, and a connecting rod piece is prone to being damaged in the working process are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to toothbrush brush head technical field especially a kind of replacement brush head for electric toothbrush. BACKGROUND

[0002] Electric toothbrushes typically have removable and replaceable attached brushes, also known as "refills", so that a common handle can be used by multiple family members, each of whom has an independent personal refill. Moreover, when the brush head wears out and / or otherwise needs to be replaced, only the refill needs to be replaced - not the entire electric toothbrush, including the handle

[0003] The existing brush head is assembled by thread assembly or other fitting assembly during assembly, and the brush head replacement is completed. Moreover, during tooth brushing, various forces must be transmitted through the coupling between the refill and the handle during brushing operation, so that the brush head is also provided with a connecting rod for transmitting power, so that the bristles rotate to complete the tooth brushing action.

[0004] However, the existing brush head has too many fittings inside, which causes processing difficulty, and the high-speed movement of the motor can easily damage the connecting rod, affecting the service life. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of replacement brush head for electric toothbrush, solve the technical problem that brush head internal structure is complex and connecting rod is easily damaged when working in prior art.

[0006] The application embodiment discloses a kind of replacement brush head for electric toothbrush, including:

[0007] Brush handle, the brush handle inside is provided with a containing cavity;

[0008] Flexible pull rod assembly, is set in the brush handle interior;

[0009] Brush head seat, is installed at the top of the brush handle, and the inner wall of the brush head seat is connected with the top of the flexible pull rod assembly;

[0010] Spring, is sleeved on the flexible pull rod assembly;

[0011] Limiting strip, is set on the inner wall of the containing cavity, and the bottom of the limiting strip is mutually matched with the spring.

[0012] The pull rod assembly is designed in the application, i.e. designed as flexible piece, so that the service life of the entire device can be prolonged.

[0013] On the basis of the above technical solution, the application embodiment can also be improved as follows:

[0014] Further, the flexible pull rod assembly includes:

[0015] A connecting rod, a top of the connecting rod is movably connected with an inner wall of the brush head seat;

[0016] An injection molding part is arranged at a bottom of the connecting rod, and the injection molding part can realize flexible pushing, so that the whole structure can work stably for a long time.

[0017] Further, a groove is arranged at a bottom of the injection molding part, and the groove can better ensure stable working of the flexible pull rod assembly.

[0018] Further, an assembly groove matched with the spring is arranged at a bottom of the limiting strip, and the assembly groove can realize stable assembly of the spring.

[0019] Further, a buckle part is arranged at an inner wall of the accommodating cavity, and the buckle part is provided with a clamping hook, and the buckle part can realize connection of the brush head seat part.

[0020] Further, the clamping hook is at least two, and the clamping hook can ensure stability during assembly.

[0021] Further, a plug pin is arranged at a top of the brush handle, an end of the plug pin is matched with the brush head seat, and the plug pin can facilitate stable working of the brush head seat.

[0022] One or more technical solutions provided in the embodiment of the application have at least the following technical effects or advantages:

[0023] 1. The brush handle is designed, and the internal buckle part is matched, so that subsequent replacement assembly is facilitated.

[0024] 2. The flexible pull rod assembly is arranged, flexible driving is realized, and stability of working of the whole device is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 A structure diagram of the replaceable brush head for the electric toothbrush according to the specific embodiment of the present application;

[0027] Figure 2 A cross-sectional view of the replacement brush head for the electric toothbrush according to the embodiments of the present application is shown in the figure;

[0028] Figure 3 A structure diagram of the injection molding part of the replacement brush head for the electric toothbrush according to the embodiments of the present application is shown in the figure;

[0029] Reference signs:

[0030] 1 - brush handle; 2 - flexible pull rod assembly; 3 - brush head seat; 4 - latch; 5 - spring; 6 - limiting strip;

[0031] 101 - accommodating cavity; 102 - buckle; 103 - hook protrusion;

[0032] 201 - connecting rod; 202 - injection molding part; 203 - groove;

[0033] 601 - assembly groove. DETAILED DESCRIPTION

[0034] The embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0035] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the skilled person in the field of the present application.

[0036] In the present application, unless otherwise specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In order to better understand the above technical scheme, the above technical scheme will be described in detail below with reference to the drawings and specific embodiments of the specification.

[0038] Embodiment:

[0039] As Figures 1-3 shown, the embodiments of the present application disclose a replacement brush head for an electric toothbrush, which is used for replacing the electric toothbrush head. Compared with the existing replacement brush head, the structure is simple, the assembly is convenient, and the service life is also long.

[0040] As Figure 1The structure of the present application comprises:

[0041] The brush handle 1 is internally provided with a containing cavity 101, and the specific shape of the brush handle 1 can be the existing shape, and the containing cavity 101 in the inside is used for mounting other connecting members, that is, under the driving of the motor, the brush head seat part can be driven to swing, thereby realizing the function of tooth brushing.

[0042] The flexible pull rod assembly 2 is arranged in the brush handle 1, and the bottom of the flexible pull rod assembly 2 is matched with the motor to complete the swing of the brush head seat, thereby completing the tooth brushing action.

[0043] The brush head seat 3 is mounted at the top of the brush handle 1, and the inner wall of the brush head seat 3 is connected with the top of the flexible pull rod assembly 2. The brush head seat 3 is in a cylindrical shape, the outer side is used for mounting the bristles, the inner side is arranged in the containing cavity 101 of the brush handle, and is matched with the flexible pull rod assembly 2 to facilitate subsequent swing. Meanwhile, in order to facilitate the stable swing of the subsequent brush head seat 3, the present application additionally has a bolt 4, the end of which is inserted into the inside of the brush head seat 3 from the top of the brush handle, so as to facilitate the subsequent swing.

[0044] The spring 5 is sleeved on the flexible pull rod assembly 2, and the spring 5 can realize the function of reciprocation, that is, when the subsequent part pushes the flexible pull rod assembly 2 to move, the spring 5 can promote the flexible pull rod assembly 2 to reset, thereby realizing the reciprocating motion.

[0045] The limiting strip 6 is arranged on the inner wall of the containing cavity 101, and the bottom of the limiting strip 6 is matched with the spring 5. The limiting strip 6 is mainly used for cooperation with the spring to push the flexible pull rod assembly 2 to move back and forth, and preferably, the limiting strip 6 is at least two.

[0046] Compared with the existing hard pull rod assembly, the present application adopts the flexible pull rod assembly 2, which can prolong the service life and ensure the stability of the overall structure.

[0047] As shown in Figure 2 , 3 The specific structure is that the flexible pull rod assembly 2 comprises:

[0048] The connecting rod 201 is movably connected with the inner wall of the brush head seat 3 at the top.

[0049] The injection molding part 202 is arranged at the bottom of the connecting rod 201. When the injection molding part is pushed by external force, the connecting rod 201 can be driven to move back and forth. Meanwhile, the injection molding part 202 is made of flexible material, which can also ensure the service life and avoid breaking after long-term work, thereby affecting the service life.

[0050] In order to further improve the service life of the injection molding part 202, the bottom of the injection molding part 202 is provided with a groove 203, and the groove 203 is symmetrically arranged, so that the stability of the injection molding part 202 can be better guaranteed.

[0051] In order to better guarantee the stability of the spring assembly, the bottom of the limiting strip 6 is provided with an assembly groove 601 matched with the spring 5, and the assembly groove 601 facilitates the assembly of the spring 5 and guarantees the stability.

[0052] The application is a replacement brush head, which needs to be matched with an electric toothbrush subsequently, and therefore, buckle members 102 are arranged on the inner wall of the accommodating cavity 101, the inner side of the buckle members 102 is provided with clamping hook protrusions 103, and the brush head seat part can be connected through the buckle members; wherein the clamping hook protrusions 103 are at least two, so that the stability during assembly can be guaranteed.

[0053] Further description is made for the application:

[0054] The top of the connecting rod is provided with an inclined section, the top of the inclined section is connected with the back surface of the brush head seat, and the included angle between the inclined section and the vertical surface can be 30 degrees or 45 degrees, so that the stable rotation of the brush head seat 3 can be facilitated.

[0055] In use, the brush handle is directly inserted into the top of the electric toothbrush, the buckle, the clamping hook protrusion in the accommodating cavity and the electric toothbrush are matched with each other, the bottom of the injection molding part is matched with the motor, the motor is started, the connecting rod 201 is moved, the brush head seat is driven to rotate, and the tooth brushing function is realized.

[0056] In the specification of the utility model, a large number of specific details are explained. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail, so as not to obscure the understanding of the specification.

[0057] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0058] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A replacement brush head for an electric toothbrush, characterized by, Include: Brush handle (1), which is internally provided with a containing cavity (101); Flexible pull rod assembly (2) is arranged inside the brush handle (1); Brush head seat (3) is installed at the top of the brush handle (1), and the inner wall of the brush head seat (3) is connected with the top of the flexible pull rod assembly (2); Spring (5) is sleeved on the flexible pull rod assembly (2); Limiting strip (6) is arranged on the inner wall of the containing cavity (101), and the bottom of the limiting strip (6) is matched with the spring (5).

2. The replacement brush head for a power toothbrush according to claim 1, wherein The flexible pull rod assembly (2) comprises: Connecting rod (201), the top of the connecting rod (201) is movably connected with the inner wall of the brush head seat (3); Injection molding part (202) is arranged at the bottom of the connecting rod (201).

3. The replacement brush head for a power toothbrush of claim 2, wherein, The bottom of the injection molding part (202) is provided with a groove (203).

4. The replacement brush head for a power toothbrush of claim 1, wherein, The bottom of the limiting strip (6) is provided with a matching assembly groove (601) with the spring (5).

5. The replacement brush head for a power toothbrush of claim 1, wherein, The inner wall of the containing cavity (101) is provided with a buckle part (102), and the buckle part (102) is provided with a hook protrusion (103).

6. The replacement brush head for a power toothbrush according to claim 5, wherein, The hook protrusion (103) is at least two.

7. The replacement brush head for a power toothbrush according to claim 6, wherein The top of the brush handle (1) is provided with a latch, and the end of the latch is matched with the brush head seat (3).

Images