Inner shaft structure enabling toothbrush head to rotate linearly and swing leftwards and rightwards

Abstract

The utility model discloses an inner shaft structure for a toothbrush head to linearly turn left and right swing, which comprises the toothbrush head, a support rod, a tail cover and a toothbrush handle, the toothbrush head is connected with the support rod through a butt joint device, a clamping groove is arranged in the support rod in a penetrating manner, an inner shaft assembly is arranged in the clamping groove, and the toothbrush head is connected with the inner shaft assembly. And the tail cover is arranged between the supporting rod and the toothbrush handle. The utility model has the advantages of reducing the noise of the toothbrush and enhancing the tooth brushing effect.

Description

Technical Field

[0001] This utility model relates to the field of toothbrush technology, specifically to an inner shaft structure for a toothbrush head that rotates linearly and swings left and right. Background Technology

[0002] A toothbrush is a personal care tool specifically designed for cleaning teeth and maintaining oral hygiene. It typically consists of two main parts: the brush head and the handle. The brush head contains multiple tufts of bristles, usually made of nylon or similar synthetic materials, and is soft or medium-hard, effectively removing food debris and plaque from the tooth surface. Brush heads come in various shapes and sizes to accommodate different oral structures and cleaning needs. The handle, which provides grip and operation, is usually made of plastic or rubber and is ergonomically designed for comfortable and convenient use. In addition to manual toothbrushes, there are also electric toothbrushes, which are powered by batteries or rechargeable batteries, providing a more efficient cleaning experience.

[0003] In daily life, the application of automatic cleaning and care devices is becoming increasingly widespread. Electric toothbrushes can clean teeth more conveniently and effectively. Electric toothbrushes are generally divided into replaceable brush heads and handles. Therefore, the traditional method of transmitting the mechanical motion of the handle to the brush head to make the bristles swing is a crucial issue. Traditionally, the connection is rigid and cannot control the swing arc and frequency. How to better control and adjust the swing arc and frequency of the brush head to make the transmission smoother, achieve a better user experience, and improve product performance is an important direction for technological improvement and development in this field. Therefore, we propose an internal shaft structure for a toothbrush head that rotates linearly and swings left and right. Summary of the Invention

[0004] The purpose of this invention is to provide an inner shaft structure for a toothbrush head that rotates linearly and swings left and right, in order to solve the problems existing in the prior art as described in the background.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An inner shaft structure for a toothbrush head that rotates linearly and oscillates left and right includes a toothbrush head, a support rod, a tail cap, and a toothbrush handle. The toothbrush head and the support rod are connected by a docking device. A slot is provided through the support rod, and an inner shaft assembly is disposed in the slot. The tail cap is disposed between the support rod and the toothbrush handle.

[0007] Preferably, the docking device includes a rotating seat fixedly connected to the lower end of the toothbrush head, a connecting groove is provided through the front side of the support rod, the rotating seat is docked in the connecting groove and a steel sleeve is provided therein, and a head pin is provided through the front end of the support rod, the position of the head pin corresponding to the position of the rotating seat.

[0008] Preferably, the inner shaft assembly includes an eccentric shaft and a drive housing. A drive rod is connected to the drive housing. The eccentric shaft is fixedly connected to the tail end of the drive rod. A drive end cover is provided through the side wall of the drive rod. A spring is sleeved on the side wall of the drive rod. A drive iron shaft is provided through the side wall of the spring. An elastic silicone is provided between the eccentric shaft and the drive end cover.

[0009] Preferably, the side wall of the tail cap is provided with a circular hole bone locking groove, a bone retainer, a guide bone, and an elliptical cavity, and the tail cap is connected to the toothbrush handle through the elliptical cavity.

[0010] Preferably, the eccentric shaft is coupled to the rotating seat.

[0011] Preferably, a water leakage hole is provided through the tail cap.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, the inner shaft assembly, under the pressure of the toothbrush handle, undergoes a linear motion within the outer casing, which is then changed to a reciprocating motion, driving the brush head to rotate and oscillate, thereby achieving the function of cleaning oral hygiene. The breakthrough lies in controlling the brush head rotation angle and oscillation frequency by changing the linear motion mode of the power source to a new reciprocating motion, thus achieving smooth transmission of the brush head and reducing noise caused by the transmission process. The tail of the inner shaft assembly is directly driven to the handle by spring tension. Under the reciprocating drive of the handle, the inner shaft assembly is driven and drives the eccentric rod to change the direction of rotation in the drive box, making a left-right oscillating reciprocating motion, and driving the toothbrush rotating seat to rotate left and right around the central axis, thereby achieving the effect of whitening teeth. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the inner shaft structure of a toothbrush head that rotates linearly and swings left and right according to the present invention.

[0015] Figure 2 This is a side sectional view of a toothbrush head that rotates linearly and swings left and right according to the present invention.

[0016] Figure 3 This is a schematic diagram of the inner shaft assembly for a toothbrush head that rotates linearly and swings left and right according to the present invention.

[0017] Figure 4 This is a schematic diagram of one side of the tail cap of a toothbrush head that rotates linearly and swings left and right according to the present invention.

[0018] Figure 5 This is a schematic diagram of the other side of the tail cap of a toothbrush head that rotates linearly and swings left and right according to this utility model.

[0019] In the diagram: 1 Toothbrush head, 2 Head pin, 3 Steel sleeve, 4 Support rod, 5 Inner shaft assembly, 6 Tail cap, 7 Toothbrush handle, 8 Eccentric shaft, 9 Elastic silicone, 10 Drive end cap, 11 Spring, 12 Drive iron shaft, 13 Drive rod, 14 Drive box, 15 Open round hole bone position locking groove, 16 Bone clamp, 17 Drain hole, 18 Guide bone, 19 Oval cavity. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-3 An inner shaft structure for a toothbrush head that rotates linearly and oscillates left and right includes a toothbrush head 1, a support rod 4, a tail cap 6, and a toothbrush handle 7. The toothbrush head 1 and the support rod 4 are connected by a docking device, which includes a rotating seat fixedly connected to the lower end of the toothbrush head 1. A connecting groove is provided through the front side of the support rod 4, and the rotating seat is docked in the connecting groove and has a steel sleeve 3 inside. A head pin 2 is provided through the front end of the support rod 4, and the position of the head pin 2 corresponds to the position of the rotating seat. The head pin 2 helps to keep the toothbrush head rotating in the correct position and does not restrict the rotation of the rotating seat.

[0022] The support rod 4 has a slot through which an inner shaft assembly 5 is installed. The inner shaft assembly 5 includes an eccentric shaft 8 and a drive box 14. The drive box 14 integrates a power transmission mechanism to ensure effective power transmission. A drive rod 13 is connected to the drive box 14. The eccentric shaft 8 is fixedly connected to the tail end of the drive rod 13. A drive end cover 10 is installed through the side wall of the drive rod 13. A spring 11 is sleeved on the side wall of the drive rod 13. A drive iron shaft 12 is installed through the side wall of the spring 11. An elastic silicone 9 is installed between the eccentric shaft 8 and the drive end cover 10. The eccentric shaft 8 is connected to the rotating seat.

[0023] Specifically, the tail cap 6 is positioned between the support rod 4 and the toothbrush handle 7. The side wall of the tail cap 6 is provided with a round hole bone locking groove 15, a bone retainer 16, a guide bone 18, and an oval cavity 19. The tail cap 6 is connected to the toothbrush handle 7 through the oval cavity 19. The unique shape of the oval cavity 19 enhances the compactness of the overall structure. A drain hole 17 is provided through the tail cap 6. The design of the drain hole 17 ensures that residual water can be easily drained during the cleaning process after use, maintaining hygiene.

[0024] In this invention, the tail of the inner shaft assembly 5 is directly driven to the toothbrush handle 7 by the tension of the spring 11. Under the reciprocating drive of the toothbrush handle 7, the inner shaft assembly 5 is driven and the eccentric shaft 8 is driven to change the direction of rotation at the drive box 17 to make left and right swinging reciprocating motion, and the rotating seat of the toothbrush head 1 is driven to rotate left and right around the central axis, thereby achieving the effect of whitening teeth brushing.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A straight-to-left-and-right swing inner shaft structure of a toothbrush head, comprising a toothbrush head (1), a support rod (4), a tail cover (6) and a toothbrush handle (7), characterized in that, The toothbrush head (1) is connected with the supporting rod (4) through the butt joint device, the supporting rod (4) is provided with a clamping groove, the clamping groove is provided with an inner shaft assembly (5), and the tail cover (6) is arranged between the supporting rod (4) and the toothbrush handle (7).

2. A straight-to-left-and-right oscillating inner shaft structure for a toothbrush head according to claim 1, characterized in that, The butt joint device comprises a rotating seat fixedly connected to the lower end of the toothbrush head (1), the front side of the supporting rod (4) is provided with a connecting groove, the rotating seat is arranged in the connecting groove and is provided with a steel sleeve (3) in the rotating seat, the front end of the supporting rod (4) is provided with a head nail (2), and the position of the head nail (2) corresponds to the position of the rotating seat.

3. A straight-to-left-and-right oscillating inner shaft structure for a toothbrush head according to claim 1, characterized in that, The inner shaft assembly (5) comprises an eccentric shaft (8) and a driving box (14), the driving box (14) is provided with a driving rod (13), the eccentric shaft (8) is fixedly connected to the tail end of the driving rod (13), the side wall of the driving rod (13) is provided with a driving end cover (10), the side wall of the driving rod (13) is provided with a spring (11), the side wall of the spring (11) is provided with a driving iron shaft (12), and the eccentric shaft (8) and the driving end cover (10) are provided with elastic silica gel (9).

4. A straight-to-left-and-right oscillating inner shaft structure for a toothbrush head according to claim 1, wherein The side wall of the tail cover (6) is provided with an open circular hole bone position lock groove (15), a clamping bone (16), a guide bone (18) and an oval cavity (19), respectively, and the tail cover (6) is connected with the toothbrush handle (7) through the oval cavity (19).

5. A straight-to-left-and-right oscillating inner shaft structure for a toothbrush head according to claim 3, wherein The eccentric shaft (8) is connected to the rotating seat.

6. A straight-to-left-and-right oscillating inner shaft structure for a toothbrush head according to claim 1, wherein The tail cover (6) is provided with a water leakage hole (17).

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