Durable structure of dental scaler movement transmission part

Abstract

The utility model relates to a dental scaler movement transmission piece durable structure which comprises a movement shell, an elastic piston and a driving device, the driving device comprises a motor, a gear, an end face gear and a connecting rod, an eccentric wheel is arranged on the end face gear, and a groove hole matched with the eccentric wheel to work is formed in the rear end of the connecting rod. And a wear-resistant lining plate is arranged between the eccentric wheel and the inner wall of the slotted hole. The wear-resistant structure of the tooth device movement transmission piece is reasonable in design, simple in structure, easy to implement and high in practicability, avoids direct contact between the inner wall of the groove hole and the eccentric wheel through the wear-resistant lining plate, can reduce wear of the inner wall of the groove hole, and avoids the situation that a connecting rod cannot work stably or the movement stroke is not in place due to a gap generated by wear. Good working performance of the machine core is guaranteed, and noise is reduced at the same time.

Description

Technical Field

[0001] The utility model relates to the field of tooth cleaners, in particular to a durable structure of a tooth cleaner core transmission part. Background Art

[0002] The movement of a tooth cleaner or water flosser (also called a water pump) uses a crank-connecting rod mechanism to drive the movement of an elastic piston, such as the water flosser movement disclosed in Chinese patent CN114668539A; a slot is provided at the rear end of the connecting rod and is hinged to an eccentric wheel. After long-term use, the friction generated by the relative movement between the slot and the eccentric wheel will cause wear of the inner wall of the slot, thereby increasing the gap between the inner wall of the slot and the eccentric wheel, causing the connecting rod to be unable to work stably or to have an inadequate movement stroke, thereby affecting the working performance of the movement and easily generating noise. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a tooth cleaner movement transmission part with a simple structure, easy implementation and strong practicality, which can reduce wear and ensure good working performance of the movement.

[0004] The utility model is implemented by the following scheme: a durable structure of a tooth cleaner movement transmission part, including a movement shell, an elastic piston and a driving device, the driving device includes a motor, a gear, an end gear and a connecting rod, an eccentric wheel is arranged on the end gear, a slot hole cooperating with the eccentric wheel is arranged at the rear end of the connecting rod, and a wear-resistant lining plate is arranged between the eccentric wheel and the inner wall of the slot hole.

[0005] Furthermore, the slot is a long slot and its length direction is perpendicular to the axis of the elastic piston. Both ends of the slot length direction leave space for the eccentric wheel to swing left and right so that the eccentric wheel drives the connecting rod to reciprocate forward and backward when the end gear rotates.

[0006] Furthermore, the wear-resistant lining is in an inverted U shape and is embedded in the slot hole. The side plates on both sides of the wear-resistant lining are blocked between the eccentric wheel and the long sides of the slot hole. A guide long hole is opened on the top of the wear-resistant lining for sliding cooperation with the gear shaft of the end gear. The length direction of the guide long hole is parallel to the axis of the elastic piston.

[0007] Furthermore, a buckle cover portion covering the eccentric wheel is provided at the rear end of the connecting rod, the slot hole is located on the lower side of the buckle cover portion, and a long clearance hole communicating with the slot hole and located above the guide long hole is opened on the upper side of the buckle cover portion, and the upper end of the gear shaft of the end face gear passes through the long clearance hole.

[0008] Furthermore, the top and bottom of the movement housing are respectively provided with limiting slots rotatably matched with the end of the gear shaft of the end gear, and wear-resistant sleeves are embedded in the limiting slots.

[0009] Compared with the prior art, the utility model has the following beneficial effects: The wear-resistant structure of the transmission part of the dental appliance movement of the utility model is reasonably designed, simple in structure, easy to implement, and has strong practicability. By setting a wear-resistant lining plate, the inner wall of the slot hole is prevented from directly contacting the eccentric wheel, which can reduce the wear of the inner wall of the slot hole, avoid the generation of gaps due to wear, resulting in the unstable operation of the connecting rod or the incomplete movement stroke, ensure the good working performance of the movement, and at the same time reduce the noise.

[0010] In order to make the purpose, technical solution and advantages of the utility model more clear and understandable, the following will further elaborate on the utility model through specific embodiments and related drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three-dimensional view of the overall structure of the dental cleaner movement in the embodiment of the utility model;

[0012] Figure 2 is a three-dimensional view of the internal structure of the dental cleaner movement in the embodiment of the utility model;

[0013] Figure 3 is a schematic diagram of a partial structure of the dental cleaner movement in the embodiment of the utility model;

[0014] Figure 4 is Figure 3 the longitudinal sectional view of;

[0015] Figure 5 is Figure 3 the transverse sectional view of;

[0016] Explanation of reference numerals in the drawings: B - movement, 100 - movement housing, 110 - elastic piston, 120 - water outlet seat, 130 - motor, 140 - gear, 150 - face gear, 151 - gear shaft, 152 - eccentric wheel, 160 - connecting rod, 161 - slot hole, 162 - buckle cover part, 163 - relief long hole, 170 - wear-resistant sleeve, 180 - wear-resistant lining plate, 181 - guiding long hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] like Figures 1 - 5 As shown, a durable structure of a toothbrush movement transmission part includes a movement shell 100, an elastic piston 110 and a driving device. The elastic piston 110 is made of materials such as plastic film and silicone film. A water outlet seat 120 with a piston cavity is arranged at the front end of the movement shell 100. The elastic piston is arranged at the rear end of the water outlet seat 120. The water outlet end of the water outlet seat can be directly connected to the nozzle, or it can be connected to the handle with the nozzle through a hose. The water outlet seat 120 is a prior art, and can adopt the upper shell structure in the Chinese patent CN114668539A toothbrush machine, or can adopt the water outlet seat structure in the Chinese patent CN116549157A desktop toothbrush and its working method. The driving device includes a motor 130, a gear 140, an end gear 150 and a connecting rod 160. The motor drives the elastic piston to move through the driving device, thereby realizing the water inlet and outlet of the water outlet seat. An eccentric wheel 152 is provided on the end face gear 150. The eccentric wheel 152 and the end face gear 150 are an integrated structure. A slot hole 161 cooperating with the eccentric wheel is provided at the rear end of the connecting rod. A wear-resistant lining plate 180 is provided between the eccentric wheel 151 and the inner wall of the slot hole 161. By arranging the wear-resistant lining plate to contact the eccentric wheel, direct contact between the inner wall of the slot hole and the eccentric wheel is avoided, thereby reducing the wear of the inner wall of the slot hole, extending the service life, and avoiding gaps caused by wear that cause the connecting rod to fail to work stably or the movement stroke to be inadequate, thereby ensuring good working performance of the movement and reducing noise.

[0020] In this embodiment, the slot hole 161 is a long slot hole and its length direction is perpendicular to the axis of the elastic piston. The two ends of the slot hole in the length direction leave space for the eccentric wheel to swing left and right so that the eccentric wheel drives the connecting rod to reciprocate forward and backward when the end gear rotates. The front end of the connecting rod is provided with a clamping joint part, and the middle part of the rear end of the elastic piston is provided with a clamping groove that is engaged with the clamping joint part, thereby realizing the connection between the connecting rod and the elastic piston. Since the slot hole is a long slot hole structure, the swinging movement of the eccentric wheel in the left and right direction will not drive the connecting rod to swing left and right, and only the swinging movement in the up and down direction will drive the connecting rod to move forward and backward, ensuring that the connecting rod only moves in the forward and backward direction without swinging left and right, thereby preventing the connection part between the connecting rod and the elastic piston from loosening.

[0021] In this embodiment, the wear-resistant lining plate 180 is in an inverted U shape and is embedded in the slot hole 161. The side plates on both sides of the wear-resistant lining plate block between the eccentric wheel and the two long sides of the slot hole. A guiding long hole 181 that is slidably fitted with the gear shaft of the end face gear is formed at the top of the wear-resistant lining plate. The length direction of the guiding long hole 181 is parallel to the axis line of the elastic piston. By providing the guiding long hole 181 that cooperates with the gear shaft on the wear-resistant lining plate, the forward and backward movement of the connecting rod can be guided, ensuring that the connecting rod stably performs reciprocating linear motion in the forward and backward directions without generating yaw in the left and right directions. At the same time, the guiding long hole 181 is not prone to wear, ensuring a stable guiding effect in terms of length.

[0022] In this embodiment, a buckling cover portion 162 covering the eccentric wheel is provided at the rear end of the connecting rod 160. The slot hole 161 is located below the buckling cover portion 162. A relief long hole 163 that communicates with the slot hole and is located above the guiding long hole is formed in the upper side of the buckling cover portion. The upper end of the gear shaft of the end face gear passes through the relief long hole 163. The length direction of the relief long hole 163 is also parallel to the axis line of the elastic piston, and the width and length of the relief long hole 163 can be slightly larger than those of the guiding long hole 181.

[0023] In this embodiment, limiting slot holes that are rotationally fitted with the ends of the gear shafts 151 of the end face gears are respectively provided at the inner top and inner bottom of the movement housing 100. Wear-resistant sleeves 170 are embedded in the limiting slot holes. The wear-resistant sleeves 170 are made of copper material. By providing the wear-resistant sleeves, wear of the limiting slot holes of the movement housing can be avoided, ensuring the long-term stable operation of the gear shafts of the end face gears.

[0024] For any of the technical solutions disclosed by the present utility model as described above, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with relatively obvious technical effects or representativeness among many feasible numerical values. Since there are too many numerical values to enumerate, the present utility model only discloses some numerical values to illustrate the technical solutions of the present utility model. Moreover, the numerical values listed above should not constitute a limitation on the protection scope of the present utility model.

[0025] If the present utility model discloses or involves mutually fixedly connected components or structural members, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (such as using bolts or screws for connection), or it can also be understood as: a non-detachable fixed connection (such as riveting or welding). Of course, the mutually fixed connection can also be replaced by an integral structure (such as manufactured integrally using a casting process) (except when it is obviously impossible to adopt an integral forming process).

[0026] In addition, unless otherwise stated, the terms used to represent positional relationships or shapes in any of the technical solutions disclosed in the present utility model include states or shapes that are approximate, similar, or close thereto.

[0027] Any component provided by the present utility model can either be assembled from a plurality of individual components or be a single component manufactured by an integral forming process.

[0028] The above are only preferred embodiments of the present utility model and do not limit the present utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution content of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A durable structure of a tooth cleaner movement transmission part, comprising a movement housing, an elastic piston and a driving device, wherein the driving device comprises a motor, a gear, an end gear and a connecting rod, characterized in that: An eccentric wheel is arranged on the end face gear, a slot hole cooperating with the eccentric wheel is arranged at the rear end of the connecting rod, and a wear-resistant lining plate is arranged between the eccentric wheel and the inner wall of the slot hole.

2. The durable structure of the tooth cleaner core transmission part according to claim 1, characterized in that: The slot hole is a long slot hole and its length direction is perpendicular to the axis of the elastic piston. Both ends of the slot hole in the length direction leave space for the eccentric wheel to swing left and right so that the eccentric wheel drives the connecting rod to reciprocate forward and backward when the end gear rotates.

3. The durable structure of the tooth cleaner core transmission component according to claim 2, characterized in that: The wear-resistant lining is in an inverted U shape and embedded in the slot hole. The side plates on both sides of the wear-resistant lining are blocked between the eccentric wheel and the long sides of the slot hole. A guide long hole is opened on the top of the wear-resistant lining for sliding cooperation with the gear shaft of the end gear. The length direction of the guide long hole is parallel to the axis of the elastic piston.

4. The durable structure of the tooth cleaner core transmission component according to claim 3, characterized in that: The rear end of the connecting rod is provided with a buckle cover part covering the eccentric wheel, the slot hole is located on the lower side of the buckle cover part, and the upper side of the buckle cover part is provided with a long clearance hole which is connected with the slot hole and is located above the guide long hole, and the upper end of the gear shaft of the end face gear passes through the long clearance hole.

5. The durable structure of the tooth cleaner core transmission part according to claim 1, characterized in that: The top and bottom of the movement shell are respectively provided with limiting slots rotatably matched with the end of the gear shaft of the end gear, and wear-resistant sleeves are embedded in the limiting slots.

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