Driving handle single-connecting-rod transmission structure

Abstract

The utility model discloses a driving handle single connecting rod transmission structure, which relates to the technical field of electric toothbrushes, and comprises a toothbrush head, a motor, a driving handle, a transmission shaft, a connecting rod, a base and a stabilizing piece, the motor is fixedly arranged in the base, one end of the transmission shaft is inserted into the toothbrush head, the driving end of the motor is provided with the driving handle, and the end part of the driving handle is eccentrically connected with a transmission convex column; a connecting rod is fixedly connected outside the transmission shaft, a limiting groove is formed in the end face of the connecting rod, and the transmission protruding column extends into the limiting groove. According to the driving handle single-connecting-rod transmission structure, the driving mode of an electric toothbrush is improved, and a single-connecting-rod eccentric transmission structure is adopted, so that the left-right rotating stroke of toothbrush bristles can be long, that is, the left-right rotating stroke is as long as the maximum diameter of the driving handle and is closer to a Bass tooth brushing method, and the tooth cleaning effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of electric toothbrushes, in particular to a single-connecting rod transmission structure of a driving handle. Background Art

[0002] An electric toothbrush is a modern oral cleaning tool that uses the vibration of the electric motor to make the brush head produce high-frequency vibrations, thereby efficiently cleaning the teeth and mouth.

[0003] In the structure of existing electric toothbrushes, the core component that makes the toothbrush head generate high-frequency vibration generally adopts a vibration motor. That is to say, the vibration force of the motor is transmitted to the toothbrush bristles. In this way, the vibration force and amplitude of the toothbrush bristles are small, and the effect of cleaning teeth is not ideal. For this reason, we propose a single-link transmission structure of the drive handle, which can ultimately achieve the effect of making the toothbrush head reciprocate at a high frequency. Summary of the invention

[0004] Therefore, the utility model provides a single-connecting rod transmission structure of a driving handle to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a single-link transmission structure of a drive handle, comprising a toothbrush head and a driving device connected to the toothbrush head, wherein the driving device comprises:

[0006] motor;

[0007] A drive handle, the drive handle is mounted on the drive end of the motor, and the edge of the drive handle facing away from the motor end face is connected with a transmission boss;

[0008] A transmission shaft, which is connected to the inside of the toothbrush head and can drive the toothbrush head to rotate back and forth;

[0009] The connecting rod is fixed on the outside of the transmission shaft, and a limiting groove is provided on the end surface of the connecting rod away from the toothbrush head. The transmission protrusion is inserted in the limiting groove and can move inside the limiting groove.

[0010] Furthermore, the drive handle single connecting rod transmission structure further includes:

[0011] A base, wherein the motor is installed inside the base;

[0012] The stabilizing member is connected to the end of the base through a snap-fit ​​structure and an alignment structure.

[0013] Furthermore, a cavity for installing the motor is provided inside the base, and an embracing protrusion is integrally connected to the upper portion of the base. The top end of the embracing protrusion is bent inwardly and can constrain the vertical position of the motor.

[0014] Furthermore, an axle extension slot is provided at the end of the base, and the driving end of the motor can extend out through the axle extension slot. The end of the base is also connected to a shaft sleeve, and the end of the transmission shaft is rotatably connected in the shaft sleeve.

[0015] Furthermore, the snap-fit ​​structure includes a snap hook symmetrically connected to the end of the base and an outwardly extending protrusion symmetrically connected to both sides of the stabilizing member. A snap hole is formed through the interior of the outwardly extending protrusion. The snap hook is located in the snap hole and snaps with the outwardly extending protrusion.

[0016] Furthermore, the alignment structure includes a limiting hole reserved at a corner of the end of the base, and a limiting boss connected to the end surface of the stabilizing member, and the limiting boss is inserted into the inside of the limiting hole.

[0017] Furthermore, an axial hole is formed on the adjacent end surfaces of the stabilizing member and the toothbrush head, and the transmission shaft rotates in the axial hole.

[0018] Compared with the prior art, it has the following beneficial effects:

[0019] The single-link transmission structure of the drive handle improves the driving method of the electric toothbrush and adopts a single-link eccentric transmission structure. This allows the toothbrush bristles to have a long left and right rotating stroke, that is, it will be as long as the maximum diameter of the drive handle, which is closer to the Bass brushing method and has a better effect on cleaning teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 This is a disassembled stereoscopic diagram of a single-link transmission structure of a drive handle provided in some embodiments of the utility model.

[0023] Figure 2 This is a stereoscopic assembly diagram of a single-link transmission structure of a drive handle provided in some embodiments of the utility model.

[0024] Figure 3 A stereoscopic view of a driving device of a single-link transmission structure of a driving handle provided in some embodiments of the utility model.

[0025] Figure 4 A stereoscopic view of the transmission shaft of a single-link transmission structure of a drive handle provided in some embodiments of the utility model.

[0026] Figure 5 This is a disassembled stereoscopic view of the base and the fixing member of the single-link transmission structure of the drive handle provided in some embodiments of the utility model.

[0027] Figure 6 A stereoscopic diagram of the assembly of a base and a fixing member of a single-link transmission structure of a drive handle provided in some embodiments of the utility model.

[0028] Figure 7 A half-section view of a single-link transmission structure of a drive handle after assembly provided in some embodiments of the utility model.

[0029] In the figure: 1. toothbrush head; 2. motor; 3. drive handle; 31. transmission boss; 4. transmission shaft; 5. connecting rod; 51. limiting groove; 6. base; 61. accommodating cavity; 62. surrounding protrusion; 63. shaft extension groove; 64. buckle; 65. limiting hole; 66. shaft sleeve; 7. fixing member; 71. outward extension protrusion; 72. clamping hole; 73. limiting boss; 74. shaft hole. DETAILED DESCRIPTION

[0030] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 7As shown, the single-connecting rod transmission structure of the drive handle in the embodiment of the first aspect of the utility model includes a toothbrush head 1, a motor 2, a drive handle 3, a transmission shaft 4, a connecting rod 5, a base 6 and a fixing member 7, wherein the motor 2 is fixedly installed in the base 6, and one end of the transmission shaft 4 is inserted into the inside of the toothbrush head 1. When the transmission shaft 4 rotates, it can drive the toothbrush head 1 to rotate synchronously. The driving end of the motor 2 extends from the inside of the base 6 and is equipped with the drive handle 3. The end of the drive handle 3 is eccentrically connected to the transmission boss 31. The fixing member 7 is fixed to the end of the base 6 by snapping. The transmission shaft 4 passes through the inside of the fixing member 7 and can rotate relative to the fixing member 7. The transmission shaft 4 is located in the section inside the fixing member 7, and is fixedly connected to the outside with a connecting rod 5. The end surface of the connecting rod 5 is provided with a limiting groove 51. The limiting groove 51 is positioned The transmission boss 31 has an oblong structure and extends into the limiting groove 51. When the motor 2 drives the driving handle 3 to rotate, the transmission boss 31 rotates synchronously with it. Because the transmission boss 31 is eccentrically arranged on the driving handle 3, the rotation trajectory of the transmission boss 31 is circular. The circular trajectory has two endpoints in the horizontal direction. When transitioning from one point to another, the transmission boss 31 will drive the connecting rod 5 to deflect, and the connecting rod 5 will drive the transmission shaft 4 to rotate synchronously. The final effect is to drive the toothbrush head 1 to rotate synchronously. Similarly, when the transmission boss 31 transitions from another point to the initial point, the transmission boss 31 will drive the connecting rod 5 to reset, and the toothbrush head 1 will eventually reset. In this way, when the motor 2 rotates at a high frequency, the toothbrush head 1 will keep swinging back and forth to achieve the purpose of cleaning the teeth.

[0032] Compared with the structure of existing electric toothbrushes, the technical solution of the above embodiment abandons the commonly used vibration motor and adopts an eccentric transmission structure. The eccentric transmission structure can make the toothbrush head continuously reciprocate and swing, which can greatly improve the effect of the electric toothbrush in cleaning teeth.

[0033] Firstly, in order to facilitate the installation of the motor 2, a cavity 61 is opened inside the base 6, and in order to prevent the motor 2 from moving in the vertical direction, two symmetrical embracing protrusions 62 are integrally connected to the upper part of the base 6, and the top ends of the two embracing protrusions 62 are bent toward each other, so that the motor 2 can be constrained in four directions. An axle extension groove 63 is opened at the end of the base 6, and the driving end of the motor 2 can extend through the axle extension groove 63. The end of the base 6 is also connected to a shaft sleeve 66, and the end of the transmission shaft 4 is rotatably connected in the shaft sleeve 66. When the transmission shaft 4 rotates back and forth, the shaft sleeve 66 is used as the axis.

[0034] Secondly, in order to facilitate the connection between the base 6 and the stabilizing member 7, two clips 64 are symmetrically connected at the end of the base 6, and correspondingly, two externally extending protrusions 71 are symmetrically connected at the corresponding positions of the stabilizing member 7. A clip hole 72 is penetrated through the interior of each externally extending protrusion 71. When the base 6 and the stabilizing member 7 are connected, the clip 64 is inserted into the clip hole 72 and then engaged with the externally extending protrusion 71. For disassembly, the clip 64 is pressed to deform it, and then the stabilizing member 7 is pulled out.

[0035] Third, in order to improve the accuracy of the connection between the stabilizing member 7 and the base 6, limiting holes 65 are opened at the four corners of the end of the base 6. Correspondingly, the four corners of the stabilizing member 7 are connected with limiting bosses 73. When the stabilizing member 7 is connected to the base 6 or even after the connection, the four limiting bosses 73 are inserted into the four limiting holes 65.

[0036] Finally, an axial hole 74 is also provided on the end face of the stabilizing member 7, and the transmission shaft 4 rotates in the axial hole 74. The stabilizing member 7 is a frame structure, and the driving handle 3, the transmission boss 31, the connecting rod 5 and the shaft sleeve 66 are all located inside it.

[0037] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

[0038] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A single-link transmission structure of a drive handle, comprising a toothbrush head (1) and a drive device connected to the toothbrush head (1), characterized in that: The driving device comprises: Motor (2); A drive handle (3), wherein the drive handle (3) is mounted on the drive end of the motor (2), and a transmission boss (31) is connected to the edge of the drive handle (3) facing away from the end face of the motor (2); A transmission shaft (4), the transmission shaft (4) being connected to the interior of the toothbrush head (1) and capable of driving the toothbrush head (1) to rotate reciprocatingly; A connecting rod (5) is fixed on the outside of the transmission shaft (4), and a limiting groove (51) is provided on the end surface of the connecting rod (5) facing away from the toothbrush head (1), and the transmission boss (31) is inserted into the limiting groove (51) and can move inside the limiting groove (51).

2. The single-link transmission structure of the driving handle according to claim 1, characterized in that: Also includes: A base (6), wherein the motor (2) is installed inside the base (6); A stabilizing member (7), wherein the stabilizing member (7) is connected to the end of the base (6) via a snap-fit ​​structure and an alignment structure.

3. The single-link transmission structure of the driving handle according to claim 2, characterized in that: The interior of the base (6) is provided with a cavity (61) for mounting the motor (2), and the upper portion of the base (6) is integrally connected with an embracing protrusion (62), the top end of which is bent inwards and is capable of constraining the vertical position of the motor (2).

4. The single-link transmission structure of the driving handle according to claim 3, characterized in that: An axle extension slot (63) is provided at the end of the base (6), and the driving end of the motor (2) can extend out through the axle extension slot (63). The end of the base (6) is also connected to a shaft sleeve (66), and the end of the transmission shaft (4) is rotatably connected in the shaft sleeve (66).

5. The single-link transmission structure of the driving handle according to claim 2, characterized in that: The snap-fit ​​structure comprises a snap (64) symmetrically connected to the end of the base (6), and externally extending protrusions (71) symmetrically connected to the two sides of the stabilizing member (7); a snap hole (72) is provided through the interior of the externally extending protrusion (71); the snap (64) is located in the snap hole (72) and snap-fits with the externally extending protrusion (71).

6. The single-link transmission structure of the driving handle according to claim 2, characterized in that: The alignment structure comprises a limiting hole (65) reserved at a corner of the end of the base (6), and a limiting convex column (73) connected to the end surface of the stabilizing member (7), wherein the limiting convex column (73) is inserted into the limiting hole (65).

7. The single-link transmission structure of the driving handle according to claim 2, characterized in that: An axial hole (74) is provided on the adjacent end surfaces of the stabilizing member (7) and the toothbrush head (1), and the transmission shaft (4) rotates in the axial hole (74).

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