A twin-screw pump toothbrush

Abstract

This utility model discloses a dual-screw pump toothbrush, including a housing, a transmission assembly disposed within the housing, a drive mechanism connected to the transmission assembly, and a battery connected to the drive mechanism. The transmission assembly connects to the brush head and includes a dual-screw pump. The input shaft of the dual-screw pump is connected to the drive mechanism, and the two output shafts of the dual-screw pump are respectively connected to the two brush heads. The two brush heads can rotate in opposite directions under the drive of the dual-screw pump. The dual-screw pump has a toothpaste inlet and a toothpaste extrusion port communicating with the bottom of the brush head. This utility model effectively combines the transmission rod and the pump body by connecting the dual-screw pump to the brush head, thereby reducing the diameter and length of the housing and lowering the cost.

Description

Technical Field

[0001] This utility model relates to an oral cleaning tool, specifically a dual-screw pump toothbrush. Background Technology

[0002] Toothbrushes, as oral hygiene tools, are an integral part of people's daily lives. With the development of the electric toothbrush industry, people have higher demands for the cleaning power of toothbrushes. Chinese utility model patent CN220695388U discloses an improved dual-wheel toothbrush structure, which uses two parallel, counter-rotating transmission rods to drive the brush head, and a toothpaste extrusion mechanism connects the two transmission rods via a pump body. However, currently, ordinary pump bodies are relatively large, affecting the overall diameter of the toothbrush when used in electric toothbrushes, and are also costly. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a double-screw pump toothbrush.

[0004] This utility model creatively proposes a dual-screw pump toothbrush, including a housing, a transmission assembly disposed inside the housing, a drive mechanism connected to the transmission assembly, and a battery connected to the drive mechanism. The transmission assembly is connected to the brush head, and the transmission assembly includes a dual-screw pump. The input shaft of the dual-screw pump is connected to the drive mechanism, and the two output shafts of the dual-screw pump are respectively connected to the two brush heads. The two brush heads can rotate in opposite directions under the drive of the dual-screw pump. The dual-screw pump is provided with a toothpaste inlet and a toothpaste extrusion port communicating with the bottom of the brush head.

[0005] By connecting the twin-screw pump to the brush head, the transmission rod is effectively integrated with the pump body, thereby reducing the diameter and length of the housing and lowering costs.

[0006] Furthermore, the twin-screw pump includes a pump housing and two extrusion screws arranged parallel to each other in the pump housing, which are rotatable in opposite directions. The two extrusion screws are axially connected to the brush rods of two brush heads respectively.

[0007] Furthermore, the twin-screw pump is directly connected to the drive mechanism, or the twin-screw pump is connected to the drive mechanism through a speed change mechanism and / or a toothpaste storage mechanism.

[0008] In other words, there are multiple ways to connect a twin-screw pump to a drive mechanism. The twin-screw pump can be directly connected to the drive mechanism, connected through a speed change mechanism, connected through a toothpaste storage mechanism, or connected through a speed change mechanism to a toothpaste storage mechanism, and then connected to the drive mechanism through the toothpaste storage mechanism.

[0009] When the twin-screw pump is connected to the drive mechanism via a toothpaste storage mechanism, or via a speed-changing mechanism and a toothpaste storage mechanism, the toothpaste storage mechanism includes a toothpaste chamber and a delivery screw disposed in the toothpaste chamber; the toothpaste chamber has a toothpaste inlet communicating with the outside of the housing and a toothpaste outlet communicating with the toothpaste extrusion port, and the toothpaste inlet is provided with an openable and closable closure; the input end of the delivery screw is connected to the drive mechanism, and the output end is connected to the twin-screw pump via a speed-changing mechanism.

[0010] Furthermore, the toothpaste outlet is connected to the toothpaste inlet of a twin-screw pump via a toothpaste delivery channel, and the toothpaste inlet is located at the input end of the twin-screw pump. At least one switching valve is installed along the toothpaste delivery path.

[0011] When the twin-screw pump is directly connected to the drive mechanism, or connected to the drive mechanism through a speed change mechanism, the pump housing of the twin-screw pump has a toothpaste inlet cavity communicating with the outside of the housing and a toothpaste outlet communicating with the bottom of the brush head.

[0012] Furthermore, the twin-screw pump has a toothpaste inlet on its pump housing that communicates with the outside of the housing, and the toothpaste inlet is equipped with an openable and closable closure. At least one on / off valve is provided on the toothpaste delivery path.

[0013] Furthermore, it also includes a charging mechanism, which is disposed in the housing or in a charging base independent of the housing.

[0014] Furthermore, the housing is placed horizontally and / or vertically on the charging base to cooperate with it. The horizontal charging method can prevent water on the brush head from remaining on the upper part of the housing and causing mold growth.

[0015] Furthermore, the bottom of the housing can be flat or non-flat. A non-flat bottom structure can be arc-shaped, wavy, or similar, thus encouraging the user to place the toothbrush horizontally.

[0016] Furthermore, the brush head has bristles arranged in a spiral or annular shape around the brush axis.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] 1. This utility model connects the double-screw pump to the brush head, effectively combining the transmission rod with the pump body, thereby reducing the diameter and length of the housing and lowering costs.

[0019] 2. This utility model uses a twin-screw pump in conjunction with a toothpaste storage mechanism to extrude toothpaste. The toothpaste storage mechanism is used for storing and transporting toothpaste, and retains a large toothpaste storage space.

[0020] 3. In some embodiments, the toothpaste storage mechanism and the twin-screw pump are connected by a speed-changing mechanism, which can change the toothbrush speed on the one hand, and enable one delivery screw to drive two extrusion screws to rotate on the other hand.

[0021] 4. In some embodiments, the horizontal charging method can prevent moisture on the brush head from remaining on the upper part of the housing and causing mold growth. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a double-screw pump toothbrush provided by this utility model.

[0023] Figure 2 A perspective view of a double-screw pump toothbrush provided by this utility model.

[0024] In the picture:

[0025] Casing 1;

[0026] Transmission assembly 2, twin-screw pump 20, pump housing 200, screw 201;

[0027] Drive mechanism 3;

[0028] Battery 4;

[0029] 5 brush heads;

[0030] 6. Speed ​​change mechanism;

[0031] Toothpaste storage mechanism 7, toothpaste chamber 70, conveying screw 71, toothpaste inlet 72;

[0032] Charging dock 8. Detailed Implementation

[0033] This utility model is further illustrated by the following specific embodiments;

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein, and therefore the present invention is not limited to the specific embodiments disclosed below.

[0035] like Figure 1 and Figure 2 The image shows a dual-screw pump toothbrush, comprising a housing 1, a transmission assembly 2 disposed inside the housing 1, a drive mechanism 3 connected to the transmission assembly 2, and a battery 4 connected to the drive mechanism 3. The transmission assembly 2 is connected to a brush head 5, which has bristles arranged in a spiral or annular shape around a brush axis.

[0036] The drive mechanism 3 is a motor, and its output end is connected to the toothpaste storage mechanism 7. The toothpaste storage mechanism 7 includes a toothpaste cavity 70 and a conveying screw 71 disposed within the toothpaste cavity 70. The toothpaste cavity 70 is used to store toothpaste and has a toothpaste inlet 72 communicating with the outside of the housing 1 and a toothpaste outlet. The toothpaste inlet 72 is provided with an openable and closable closure. The input end of the conveying screw 71 is connected to the output shaft of the drive mechanism 3 and rotates under the drive of the drive mechanism 3 to convey toothpaste to the toothpaste outlet.

[0037] The output end of the conveying screw 71 is connected to the transmission assembly 2 via a speed change mechanism 6. The transmission assembly 2 includes a twin-screw pump 20, which includes a pump housing 200 and two extrusion screws 201 arranged parallel to each other and rotatable in opposite directions within the pump housing 200. The two extrusion screws 201 are axially connected to the brush handles of two brush heads 5, respectively. The twin-screw pump 20 is provided with a toothpaste inlet communicating with the toothpaste outlet of the toothpaste chamber 70 and a toothpaste extrusion port communicating with the bottom of the brush head 5. The toothpaste outlet is connected to the toothpaste inlet of the twin-screw pump 20 via a toothpaste delivery channel, and the toothpaste inlet is located at the input end of the twin-screw pump 20. A switch valve is provided on the toothpaste delivery channel, which is used to open or close the toothpaste delivery channel, and the control end of the switch valve is located outside the housing.

[0038] In this embodiment, the speed change mechanism 6 is a gearbox with multiple gears, which causes the conveying screw 71 to drive the two extrusion screws 201 of the twin screw pump 20 to rotate in opposite directions. The speed is adjusted by the gears, thereby enabling the two brush heads 5 to rotate in opposite directions under the drive of the twin screw pump 20.

[0039] In one embodiment, the speed change mechanism 6 includes a first gear connected to the conveying screw 71 and a second gear disposed on one of the extrusion screws 201. The first gear drives the transmission by meshing with the second gear. At the same time, two synchronous gears that mesh with each other are also disposed on the two extrusion screws 201. The two synchronous gears rotate synchronously towards each other, so that the two extrusion screws 201 can rotate synchronously towards each other.

[0040] The dual-screw pump toothbrush also includes a charging mechanism housed in a charging base 8 separate from the housing 1. The housing 1 can be placed horizontally or vertically on and engaged with the charging base 8. The bottom of the housing 1 is flat.

[0041] In another embodiment of this utility model, the twin-screw pump 20 is connected to the drive mechanism 3 via a speed change mechanism 6. The pump housing 200 of the twin-screw pump 20 has a toothpaste inlet communicating with the outside of the housing 1, and this toothpaste inlet is equipped with an openable and closable closure. A toothpaste extrusion port is located at the end of the pump housing 200 near the brush head 5, and the toothpaste inlet communicates with the toothpaste extrusion port through the pump housing 200. The toothpaste extrusion port is equipped with a switch valve for opening and closing, and the control end of the switch valve is located outside the housing.

[0042] The speed change mechanism 6 causes the output shaft of the drive mechanism 3 to drive the two extrusion screws 201 of the twin screw pump 20 to rotate in opposite directions, and adjusts the speed through gears, thereby enabling the two brush heads 5 to rotate in opposite directions under the drive of the twin screw pump 20.

[0043] Specifically, the speed change mechanism 6 includes a first gear connected to the output shaft of the drive mechanism 3 and a second gear disposed on one of the extrusion screws 201. The first gear drives the transmission by meshing with the second gear. At the same time, two synchronous gears mesh with each other on the two extrusion screws 201. The two synchronous gears rotate synchronously towards each other, so that the two extrusion screws 201 can rotate synchronously towards each other.

[0044] In another embodiment of this utility model, the housing 1 is placed horizontally on the charging base 8, and the bottom of the housing 1 is an arc surface.

[0045] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A dual-screw pump toothbrush, comprising a housing (1), a transmission assembly (2) disposed within the housing (1), a drive mechanism (3) connected to the transmission assembly (2), and a battery (4) connected to the drive mechanism (3), wherein the transmission assembly (2) is connected to a brush head (5), characterized in that: The transmission assembly (2) includes a twin-screw pump (20), the input shaft of which is connected to the drive mechanism (3), and the two output shafts of the twin-screw pump (20) are respectively connected to the two brush heads (5), and the two brush heads (5) can rotate in opposite directions under the drive of the twin-screw pump (20). The twin-screw pump (20) is provided with a toothpaste inlet and a toothpaste extrusion port connected to the bottom of the brush head (5).

2. The toothbrush with a dual-screw pump as described in claim 1, characterized in that: The twin-screw pump (20) includes a pump housing (200) and two extrusion screws (201) arranged parallel to each other in the pump housing (200) and capable of rotating in opposite directions. The two extrusion screws (201) are axially connected to the brush rods of two brush heads (5).

3. A dual-screw pump toothbrush as described in claim 2, characterized in that: The twin-screw pump (20) is directly connected to the drive mechanism (3), or the twin-screw pump (20) is connected to the drive mechanism (3) through a speed change mechanism (6) and / or a toothpaste storage mechanism (7).

4. A dual-screw pump toothbrush as described in claim 3, characterized in that: The toothpaste storage mechanism (7) includes a toothpaste cavity (70) and a delivery screw (71) disposed in the toothpaste cavity (70); the toothpaste cavity (70) has a toothpaste inlet (72) communicating with the outside of the housing (1) and a toothpaste outlet communicating with the toothpaste extrusion port, and the toothpaste inlet (72) is provided with an openable and closable closure; the input end of the delivery screw (71) is connected to the drive mechanism (3), and the output end is connected to the twin screw pump (20) through the speed change mechanism (6).

5. A dual-screw pump toothbrush as described in claim 4, characterized in that: The toothpaste outlet is connected to the toothpaste inlet of the twin screw pump (20) through the toothpaste delivery channel. The toothpaste inlet is located at the input end of the twin screw pump (20), and at least one switching valve is provided on the toothpaste delivery path.

6. A dual-screw pump toothbrush as described in claim 3, characterized in that: The dual-screw pump (20) has a toothpaste inlet on its pump housing (200) that communicates with the outside of the housing (1). The toothpaste inlet is equipped with an openable and closable closure, and at least one switch valve is provided on the toothpaste transmission path.

7. A dual-screw pump toothbrush as described in claim 1, characterized in that: It also includes a charging mechanism, which is located in the housing (1) or in a charging base (8) independent of the housing (1).

8. A dual-screw pump toothbrush as described in claim 7, characterized in that: The housing (1) is placed horizontally and / or vertically on the charging base (8) to cooperate with it.

9. A dual-screw pump toothbrush as described in claim 8, characterized in that: The bottom of the shell (1) is either planar or non-planar.

10. A dual-screw pump toothbrush as described in claim 1, characterized in that: The brush head (5) has bristles arranged in a spiral or annular pattern around the brush axis.

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