A polishing machine with interchangeable heads

Abstract

This utility model relates to the technical field of dental medical devices, and more particularly to a polishing head with interchangeable heads. It includes: a body with an internal drive motor and a speed-changing mechanism, the drive motor and the speed-changing mechanism being connected in a transmission connection; and a head, including a straight head and an elbow, which can be selectively and detachably connected to the front end of the body. The straight head or elbow has a working component inside, which is connected in a transmission connection to the speed-changing mechanism. The drive motor can drive the speed-changing mechanism to rotate, thereby rotating the working component. This utility model provides a polishing head with interchangeable heads. By using a detachable connection between the head and body, and allowing the straight head and elbow to be selectively connected to the front end of the body, users can easily select and quickly change between the straight and elbow heads according to their needs, thereby obtaining a larger operating space or a better operating field of vision.

Description

Technical Field

[0001] This utility model relates to the technical field of dental medical devices, and in particular to a polishing device with interchangeable heads. Background Technology

[0002] A polishing instrument is a tool used in dental treatment for polishing and grinding, primarily for finishing the surface of filling materials after dental restorations to make them smoother and conform to the natural shape of the teeth. It is often used in conjunction with other dental instruments, such as mouth mirrors, probes, forceps, and other examination instruments, as well as instruments for fillings, cavity preparation, extractions, periodontium dentistry, root canal treatment, surgery, orthodontics, and prosthodontics. Polishing instruments are highly precise, achieving micron-level accuracy, and can detect minute mirror defects and deformations. They also have a wide detection range, capable of detecting mirrors of various sizes and shapes, including flat, curved, and aspherical surfaces. Furthermore, polishing instruments are equipped with a high-brightness light source, providing clear and bright light, allowing dentists to more accurately observe details inside the oral cavity. In dental treatment, polishing instruments offer advantages such as being non-invasive, painless, and allowing for rapid recovery.

[0003] The main problem currently facing the application of laser ablation devices is that the integrated design of the head and body limits treatment flexibility. Specifically:

[0004] The integrated design of the dermal polishing instrument, combining the head and body, makes it difficult to adapt to diverse dental treatment needs. In actual dental treatment, a larger, curved tip is more suitable for treating posterior teeth, while a thinner tip is better suited for anterior teeth. However, due to differences in patients' oral structures and the treatment needs of different locations within the mouth, this integrated design often results in obstructed vision and limited operating space for the operator when using an unsuitable tip, thus reducing work efficiency and potentially causing discomfort to the patient. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a polishing head with interchangeable heads, aiming to solve the problem of how to quickly change the polishing head to meet the treatment needs of teeth in different positions in the oral cavity.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model proposes a polishing head with interchangeable heads. The polishing head includes: a machine body, in which a drive motor and a speed-changing mechanism are internally arranged, the drive motor and the speed-changing mechanism being hygienically connected; and a machine head, including a straight head and an elbow head, the straight head or the elbow head being selectively and detachably connected to the front end of the machine body, the straight head or the elbow head having a working component internally arranged, the working component being hygienically connected to the speed-changing mechanism, the drive motor being able to drive the speed-changing mechanism to rotate, thereby driving the working component to rotate.

[0009] A further technical solution is that the head and the body are connected by a quick-change connection, wherein the quick-change connection is selected from one of the following: snap-fit, threaded, spring-locking, and modular plug-in.

[0010] A further technical solution is that the machine head also includes a machine head housing and a connecting bushing fixed to the machine head housing; a groove is provided on the outer wall of the connecting bushing, and a positioning steel ball is fixed on the machine body by an elastic clamp corresponding to the groove, the positioning steel ball can be inserted into the groove, thereby clamping and fixing the machine head and the machine body.

[0011] A further technical solution is that the polishing device also includes an outer connecting sleeve, which is fitted onto the connection between the machine head and the machine body.

[0012] A further technical solution is that the body includes an upper shell and a lower shell; the upper shell and the lower shell, which are connected to each other, form a cavity with an open front end. Inside the cavity, the transmission mechanism and the drive motor are fixedly arranged in sequence along the opening, and the front end of the transmission mechanism does not extend beyond the opening; a first circuit board and a second circuit board are also fixedly installed inside the cavity, the first circuit board is located at the rear end of the drive motor, and the second circuit board is located between the transmission mechanism and the upper shell.

[0013] A further technical solution is that the first circuit board has a display screen and function keys on its upper part, and a transparent plate and function keys are respectively provided on the upper housing corresponding to the display screen and function keys, and a faceplate is covered on the upper part of the transparent plate and the function keys.

[0014] A power button is provided on the top of the second circuit board, and a power button is provided on the upper housing corresponding to the power button.

[0015] A further technical solution is that the transmission mechanism includes a planetary gear train and a first transmission shaft, one end of the planetary gear train is connected to the output shaft of the drive motor, and the other end is connected to the first transmission shaft; the working component includes a working shaft and a second transmission shaft, one end of the second transmission shaft is connected to the working shaft, and the other end is connected to the first transmission shaft; a working needle can be installed on the working shaft.

[0016] A further technical solution is that the polishing device also includes a battery and a cover plate. A battery mounting groove is provided on the outer side of the lower housing, the battery is disposed in the battery mounting groove, and the cover plate is detachably disposed at the opening of the battery mounting groove.

[0017] A further technical solution is that the reduction ratio of the planetary gear train is in the range of 3-5.

[0018] A further technical solution is that the output axis of the working component of the elbow has an angle with the axis of the machine body.

[0019] (III) Beneficial Effects

[0020] The head and body of this invention are detachably connected, and the straight head and curved head can be selectively connected to the front end of the body. Users can easily choose and quickly switch between the straight and curved heads according to their actual needs. The straight head is suitable for processing teeth on the front of the mouth. Its straight shape not only allows the operator to obtain a wider field of vision but also ensures the accuracy of the operation. The curved head is for narrow spaces that are difficult to reach, such as the back of the mouth. Its curvature allows the polishing instrument to easily penetrate deep into these areas, effectively solving the problem that traditional polishing instruments cannot be fully applied to all parts of the mouth when processing these areas simultaneously.

[0021] The drive motor and speed control mechanism inside the machine body are precisely connected, forming the core of the polishing machine's power system. The drive motor, as the power source, ensures a continuous and stable output of power required during the grinding and polishing process. The speed control mechanism flexibly adjusts the rotation speed of the working components according to the specific condition of the teeth and operational needs, thereby ensuring grinding efficiency while achieving precise control over the polishing quality of the tooth surface, avoiding over-grinding or under-polishing.

[0022] Furthermore, this polishing apparatus boasts excellent portability. Users can easily disassemble the entire apparatus into individual components such as the body and head, facilitating carrying and storage. When needed, these components can be quickly reassembled into a complete polishing apparatus, making operation simple and fast, greatly enhancing the equipment's portability and flexibility. Attached Figure Description

[0023] Figure 1 An exploded three-dimensional structural diagram of a polishing tool with a curved head.

[0024] Figure 2 A schematic diagram of the overall structure of a polishing tool with a straight head;

[0025] Figure 3 for Figure 2 A partial sectional view from another perspective;

[0026] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0027] Figure 5 A schematic diagram showing the connection between the drive motor and the speed change mechanism;

[0028] Figure 6 for Figure 5 A sectional view.

[0029] [Explanation of Labels in the Attached Image]

[0030] 1: Body; 11: Drive motor; 12: Speed ​​change mechanism; 121: Planetary gear train; 122: First drive shaft; 13: Upper housing; 131: Transparent plate; 132: Function buttons; 133: Power button; 14: Lower housing; 15: First circuit board; 151: Display screen; 152: Function keys; 16: Second circuit board; 161: Power button; 17: Surface cover; 2: Head; 21: Straight head; 22: Bent head; 23: Head housing; 24: Connecting bushing; 241: Groove; 3: Working component; 31: Working shaft; 32: Second drive shaft; 4: Positioning steel ball; 5: Battery; 6: Cover plate; 7: Outer connecting sleeve. Detailed Implementation

[0031] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] This embodiment provides a polishing machine with an interchangeable head, such as... Figures 1-6 As shown, the polishing machine includes: a machine body 1, inside which a drive motor 11 and a speed change mechanism 12 are installed, and the drive motor 11 and the speed change mechanism 12 are connected in a transmission manner; and a machine head 2, which includes a straight head 21 and an elbow 22. The straight head 21 or the elbow 22 can be selectively and detachably connected to the front end of the machine body 1. Here, the front end specifically refers to the working end of the polishing machine. The straight head 21 or the elbow 22 is equipped with a working component 3 inside, and the working component 3 is connected in a transmission manner to the speed change mechanism 12. The drive motor 11 can drive the speed change mechanism 12 to rotate, thereby driving the working component 3 to rotate.

[0033] In this embodiment, the head 2 and the body 1 are connected by a modular plug-in connection. Of course, the quick-change connection can also be a snap-on type, a threaded type, a spring-locking type, etc.

[0034] In the above design, the head 2 and the body 1 are detachably connected, and the straight head 21 and the bent head 22 can be selectively connected to the front end of the body 1. This allows the polishing instrument to quickly change to the appropriate head 2 type according to the different positions of the patient's mouth or the different operable spaces inside the mouth of different patients. The straight head 21 is suitable for processing teeth in the anterior position of the mouth, while the bent head 22 can effectively adapt to processing teeth in the narrow space of the posterior position of the mouth. This detachable and quick-change connection method greatly improves the polishing instrument's processing efficiency for teeth in different positions of the mouth. At the same time, users can easily disassemble the polishing instrument into parts for carrying or assemble it into a whole for use as needed, thereby improving the portability and flexibility of the polishing instrument.

[0035] The drive motor 11 and the speed change mechanism 12 inside the machine body 1 are connected to each other, enabling efficient power transmission and regulation. The drive motor 11 serves as the power source, providing stable power output, while the speed change mechanism 12 can adjust the rotation speed of the working component 3 according to actual work requirements, thereby achieving precise control over the quality of tooth grinding and polishing. The working component 3 inside the straight head 21 or the bent head 22 is connected to the speed change mechanism 12, ensuring that the working component 3 can rotate stably and efficiently.

[0036] In this embodiment, the machine head 2 also includes a machine head housing 23 and a connecting bushing 24 fixed on the machine head housing 23. A groove 241 is provided on the outer wall of the connecting bushing 24, and a positioning steel ball 4 is fixed on the inner wall of the opening corresponding to the groove 241 by an elastic clamp. The positioning steel ball 4 and the groove 241 cooperate with each other to realize the snap-fit ​​fixation of the machine head 2 and the machine body 1.

[0037] A connecting bushing 24 is fixed to the head housing 23. A groove 241 is provided on the outer wall of the connecting bushing 24. The groove 241 cooperates with a positioning steel ball 4 fixed to the inner wall of the opening by an elastic clamp. When the head 2 aligns with the body 1, the positioning steel ball 4 will engage in the groove 241, thus achieving a secure connection. This snap-fit ​​fixing method makes the connection between the head 2 and the body 1 more stable; simply align the head 2 with the body 1 and gently push it in for quick fixation. Maintenance is also more convenient. When it is necessary to disassemble the head 2 for inspection or replacement of parts, it can be easily pulled out without the need for tools, improving maintenance efficiency.

[0038] In this embodiment, the polishing tool also includes an outer connecting sleeve 7, which is located at the connection between the head 2 and the body 1 to achieve a fixed connection between the head 2 and the body 1. Specifically, the outer connecting sleeve 7 has a smooth connecting curved surface, which can well connect the gap between the head 2 and the body 1, so that the exterior of the polishing tool has an overall smooth appearance, making it convenient for the operator to hold.

[0039] In this embodiment, the body 1 includes an upper housing 13 and a lower housing 14. The upper housing 13 and the lower housing 14, which are connected to each other, form a cavity with an open front end. Inside the cavity, a transmission mechanism 12 and a drive motor 11 are fixedly installed in sequence along the opening, and the front end of the transmission mechanism 12 does not extend beyond the opening. A first circuit board 15 and a second circuit board 16 are also fixedly installed inside the cavity. The first circuit board 15 is located at the rear end of the drive motor 11, and the second circuit board 16 is located between the transmission mechanism 12 and the upper housing 13.

[0040] Specifically, the body 1 is composed of an upper shell 13 and a lower shell 14 connected to each other, which not only makes the structure of the body 1 more stable, but also facilitates assembly and disassembly. Within the cavity formed by the upper shell 13 and the lower shell 14, a speed-changing mechanism 12 and a drive motor 11 are sequentially fixed inwards along the opening, with the front end of the speed-changing mechanism 12 not extending beyond the opening. This ensures that the drive motor 11 and the speed-changing mechanism 12 are firmly fixed inside the body 1, while making the entire polishing apparatus structure more compact and reducing space occupation. This improves portability and overall structural stability. Furthermore, a first circuit board 15 and a second circuit board 16 are also fixedly installed within the cavity. The first circuit board 15 is located at the rear end of the drive motor 11 and is used to control the operation of the drive motor 11; the second circuit board 16 is located between the speed-changing mechanism 12 and the upper shell 13. This layout makes the circuit connections clearer, improves the space utilization within the cavity, and further enhances the portability of the polishing apparatus.

[0041] In this embodiment, the first circuit board 15 has a display screen 151 and function keys 152 on its upper surface. Corresponding to the display screen 151 and function keys 152, a transparent plate 131 and function keys 132 are respectively provided on the upper housing 13, and a faceplate 17 is covering the transparent plate 131 and function keys 132. The second circuit board 16 has a power button 161 on its upper surface, and a power button 133 is provided on the upper housing 13.

[0042] Specifically, the display screen 151 mounted on the first circuit board 15 displays information such as the rotation speed of the drive motor 11. The function buttons 132 mainly include forward / reverse control and pause control, aiming to facilitate precise control of the working components 3 of the machine head 2 by the operator. The faceplate 17 is mainly set up to protect the display screen 151 and function buttons 132, preventing dust from entering the machine body 1 and affecting the stable operation of the circuit board. The second circuit board 16 is mainly used to place the power switch of the polishing machine at the front of the machine body 1, making it convenient for the operator to start or stop it.

[0043] Specifically, in this embodiment, the transmission mechanism 12 includes a planetary gear train 121 and a first transmission shaft 122. One end of the planetary gear train 121 is connected to the output shaft of the drive motor 11, and the other end is connected to the first transmission shaft 122. The working component 3 includes a working shaft 31 and a second transmission shaft 32. One end of the second transmission shaft 32 is connected to the working shaft 31, and the other end is connected to the first transmission shaft 122. A working needle is provided on the working shaft 31 for grinding and polishing teeth. It should be noted that the connecting bushing 24 is fitted outside the second transmission shaft 32. This not only ensures the connection between the head 2 and the body 1, but also allows power to be smoothly transmitted from the body 1 to the head 2.

[0044] The speed change mechanism 12 transmits power and changes speed through a planetary gear train 121. One end of the planetary gear train 121 is connected to the output shaft of the drive motor 11 to receive power from the drive motor 11; the other end is connected to the first transmission shaft 122 to transmit power to the subsequent working component 3. The planetary gear train 121 has a compact structure, a large transmission ratio, and high transmission efficiency, ensuring stable power output and speed change performance of the polishing tool during operation. The working component 3 is connected to the working shaft 31 through the second transmission shaft 32, further transmitting power. The working shaft 31 is equipped with working needles, which are key components for tooth grinding and polishing. Since the working shaft 31 is connected to the first transmission shaft 122 of the speed change mechanism 12, the working needles can receive stable power from the drive motor 11 and perform efficient grinding and polishing operations. Specifically, in this embodiment, the reduction ratio of the planetary gear train 121 is 4:1.

[0045] In this embodiment, the polishing device also includes a battery 5 and a cover plate 6. A battery 5 mounting slot is provided on the outside of the lower housing 14. The battery 5 mounting slot is used to install the battery 5. The battery 5 is used to provide power to the entire polishing device system. The cover plate 6 is used to seal the battery 5 mounting slot to prevent the battery 5 from loosening or falling off during use. At the same time, the cover plate 6 also plays a certain role in dustproofing and waterproofing, which can protect the battery 5 from interference from the external environment and extend the service life of the battery 5.

[0046] In this embodiment, the output axis of the working component 3 of the elbow 22 forms an angle with the axis of the machine body 1. This angle is mainly for better adaptation to the treatment of teeth on the back of the mouth.

[0047] In summary, the working principle of a replaceable head polishing machine in this embodiment is as follows:

[0048] First, select the appropriate straight tip 21 or curved tip 22 based on the location of the tooth to be treated in the patient's mouth. When treating teeth on the front of the mouth, install the straight tip 21 on the machine body 1; when treating teeth on the back of the mouth, install the curved tip 22 on the machine body 1. Next, press the power button 133 to activate the internal circuitry of the polisher. At this time, operating the function button 132 on the upper housing 13 allows the drive motor 11 to obtain different speeds, directions, and other parameters. Simultaneously, the drive motor 11 drives the first transmission shaft 122 to rotate via the planetary gear train 121. The first transmission shaft 122 then drives the second transmission shaft 32 to rotate, ultimately rotating the working shaft 31 inside the machine head 2. Hold the machine body 1 and place the polisher in the working position to grind and polish the teeth. After completion, press the power button 133 to turn off the polisher.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly.

[0050] Furthermore, in this embodiment, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this embodiment, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment according to the specific circumstances.

[0052] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A polishing head with interchangeable heads, characterized in that, The abrasive includes: The body (1) is equipped with a drive motor (11) and a speed change mechanism (12) inside, and the drive motor (11) and the speed change mechanism (12) are connected in transmission. The machine head (2) includes a straight head (21) and an elbow (22). The straight head (21) or the elbow (22) can be selectively and detachably connected to the front end of the machine body (1). The straight head (21) or the elbow (22) is provided with a working component (3). The working component (3) is connected to the speed change mechanism (12) for transmission. The drive motor (11) can drive the speed change mechanism (12) to rotate, thereby driving the working component (3) to rotate.

2. The polishing head with interchangeable heads as described in claim 1, characterized in that, The machine head (2) and the machine body (1) are connected by a quick-change connection, which is selected from one of the following: snap-fit, threaded, spring-locking, and modular plug-in.

3. The polishing head with interchangeable heads as described in claim 2, characterized in that, The machine head (2) also includes a machine head housing (23) and a connecting bushing (24) fixed to the machine head housing (23); The outer wall of the connecting bushing (24) is provided with a groove (241). Corresponding to the groove (241), a positioning steel ball (4) is fixed on the machine body (1) by an elastic clamp. The positioning steel ball (4) can be inserted into the groove (241) to fix the machine head (2) and the machine body (1).

4. The polishing head with interchangeable heads as described in claim 2, characterized in that, The polishing machine also includes an outer connecting sleeve (7), which is fitted onto the connection between the machine head (2) and the machine body (1).

5. The polishing head with interchangeable heads as described in any one of claims 1 to 4, characterized in that, The fuselage (1) includes an upper shell (13) and a lower shell (14). The upper housing (13) and the lower housing (14) connected to each other form a cavity with an open front end. Inside the cavity, along the opening, the speed change mechanism (12) and the drive motor (11) are fixedly arranged in sequence, and the front end of the speed change mechanism (12) does not extend beyond the opening. A first circuit board (15) and a second circuit board (16) are also fixedly installed inside the cavity. The first circuit board (15) is located at the rear end of the drive motor (11), and the second circuit board (16) is located between the speed change mechanism (12) and the upper housing (13).

6. The polishing head with interchangeable heads as described in claim 5, characterized in that, The first circuit board (15) has a display screen (151) and function keys (152) on its upper part. Corresponding to the display screen (151) and function keys (152), a transparent plate (131) and function keys (132) are respectively provided on the upper housing (13). A faceplate (17) covers the transparent plate (131) and the function keys (132). The second circuit board (16) has a power button (161) on its upper part, and a power button (133) is provided on the upper housing (13) corresponding to the power button (161).

7. The polishing head with interchangeable heads as described in claim 5, characterized in that, The speed change mechanism (12) includes a planetary gear train (121) and a first transmission shaft (122). One end of the planetary gear train (121) is connected to the output shaft of the drive motor (11), and the other end is connected to the first transmission shaft (122). The working component (3) includes a working shaft (31) and a second transmission shaft (32), one end of the second transmission shaft (32) is connected to the working shaft (31), and the other end is connected to the first transmission shaft (122). Working needles can be installed on the working shaft (31).

8. The polishing head with interchangeable heads as described in claim 5, characterized in that, The polishing device also includes a battery (5) and a cover plate (6). A battery (5) mounting groove is provided on the outside of the lower housing (14). The battery (5) is disposed in the battery (5) mounting groove. The cover plate (6) is detachably disposed at the opening of the battery (5) mounting groove.

9. The polishing head with interchangeable heads as described in claim 7, characterized in that, The reduction ratio of the planetary gear train (121) is in the range of 3-5.

10. The polishing head with interchangeable heads as described in claim 1, characterized in that, The output axis of the working component (3) of the elbow (22) is at an angle to the axis of the body (1).

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