Manual oiling protector for dental handpiece
By designing a manual lubrication protector for dental handpieces, utilizing a horn-shaped cover and an oil collection bag structure, the problem of lubricating oil splashing is solved, achieving centralized collection of lubricating oil and environmental cleanliness, thus ensuring the maintenance effect of dental handpieces and the stability of the working environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEST CHINA STOMATOLOGICAL HOSPITAL OF SICHUAN UNIV
- Filing Date
- 2025-10-31
- Publication Date
- 2026-07-24
AI Technical Summary
The existing method of adding lubricating oil to dental handpieces is prone to splashing, resulting in lubricating oil waste and environmental pollution, especially affecting hygiene in the sterilization supply room.
Design a manual lubrication protector for dental handpieces, including a cover and an oil collection bag. Utilize a flared cover and an oil collection groove structure to prevent lubricating oil from splashing, and collect splashed oil in a centralized manner through the oil collection bag, achieving a transparent and detachable connection between the cover and the oil collection bag.
It effectively prevents lubricating oil splashing, reduces lubricating oil waste, maintains a clean working environment, and ensures stable operation and maintenance of dental handpieces.
Smart Images

Figure CN224551272U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an auxiliary oiling device for dental equipment, specifically a manual oiling protector for dental handpieces. Background Technology
[0002] In the field of dental treatment, dental handpieces are indispensable tools. Their internal structure includes key components such as motors and shafts, and the proper functioning of these components directly affects treatment outcomes and the lifespan of the equipment. To ensure the stable operation of dental handpieces, adding lubricating oil to their internal parts is a necessary procedure during routine maintenance.
[0003] Currently, industry professionals commonly use manual lubrication to add lubricant to dental handpieces, as shown in Figure 9. This involves using an oil bottle and spray nozzle to lubricate the handpiece. However, this traditional manual lubrication method has a significant drawback: it easily leads to lubricant splashing. Analysis reveals that this splashing occurs because lubricant may accidentally spray out from the handpiece's drain port (both the drain and fill ports are located at the rear of the handpiece) (e.g., ...). Figure 9 As shown in the figure, this can lead to splashing; during the process, the oil inlet may not be accurately aligned with the oil filling part of the dental handpiece, causing some lubricating oil to splash in all directions during filling.
[0004] Splashing lubricating oil not only wastes the oil but, more importantly, pollutes the surrounding environment. This is especially true in the sterilization supply room, where extremely high cleanliness is required. Splashed lubricating oil directly impacts the hygiene of the sterilization supply room, disrupts other related procedures, and poses a potential threat to the overall safety and standardization of dental treatment. Utility Model Content
[0005] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a manual lubrication protector for dental handpieces, which solves the problem of lubricating oil splashing in the existing manual lubrication method, thereby improving the maintenance effect of dental handpieces and ensuring the stable operation of the relevant working environment.
[0006] Specifically, a manual oil filling protector for a dental handpiece includes a cover and an oil collection bag. The cover is flared, with a large diameter at one end and a small diameter at the other. It has an interface at the small diameter end and an oil collection section on the inner wall of the cover. An oil outlet pipe is provided at the bottom of the oil collection groove and is connected to the oil collection bag.
[0007] Optionally, the oil collection groove is located at the large-diameter end of the cover and is a circumferential annular groove.
[0008] Optionally, the inner wall of the cover is also provided with several oil collecting rings with different inner diameters. The oil collecting rings are located on the oil inlet side of the oil collecting part, and the oil inlet side is the side near the small diameter end. Adjacent oil collecting rings are connected by axially arranged oil drains and converge in the oil collecting grooves.
[0009] Optionally, the interface section is configured with several auxiliary interface tubes with different inner diameters.
[0010] Optionally, the upper end of the oil receiving bag is provided with an oil receiving pipe, which is connected to the oil outlet pipe.
[0011] Optionally, the oil outlet pipe is provided with several turns of inverted conical connecting parts at the connection point with the oil inlet pipe, which are larger at the top and smaller at the bottom.
[0012] Optionally, an air valve is provided at the top of the oil receiving bag.
[0013] Optionally, the cover and the oil-collecting bag are transparent and visible.
[0014] This utility model has the following advantages: This utility model is a manual lubrication protector for dental handpieces, which solves the problem of lubricating oil splashing in existing manual lubrication methods, thereby improving the maintenance effect of dental handpieces and ensuring the stable operation of related working environments; the cover protects against lubrication during the lubrication process and reduces the spread of splashed lubricating oil in all directions.
[0015] The oil collection bag can collect the lubricating oil inside the cover for subsequent centralized processing; the oil collection bag and the cover are connected separately, which facilitates the installation and removal of the oil collection bag. Attached Figure Description
[0016] Figure 1 This is a three-dimensional schematic diagram of the manual oil filling protector for the dental handpiece described in this utility model; Figure 2 This is a three-dimensional schematic diagram of the manual oil filling protector of the dental handpiece described in this utility model from a frontal view. Figure 3 This is a three-dimensional view of the rear side of the manual oil filling protector of the dental handpiece described in this utility model; Figure 4 This is a front view schematic diagram of the manual oil filling protector for the dental handpiece described in this utility model; Figure 5 yes Figure 4 Sectional view of BB; Figure 6 yes Figure 5 A magnified view of part B in the diagram; Figure 7 This is a three-dimensional schematic diagram of the cover; Figure 8yes Figure 7 A magnified view of part A in the diagram; Figure 9 This is a diagram illustrating the process of filling a dental handpiece with oil using an oil bottle and spray nozzle (traditional manual oil filling method); Figure 10 This is a schematic diagram of the usage state of this utility model: In the diagram: 100, cover; 101, interface section; 1011, auxiliary interface pipe; 102, oil collection tank; 103, oil outlet pipe; 1031, inverted conical connection section; 104, oil collection ring; 105, oil drainage groove; 200, oil receiving bag; 201, oil receiving pipe; 300, oil bottle; 301, oil spray pipe; 400, dental handpiece. Detailed Implementation
[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0018] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.
[0019] As described in the background section, currently, industry professionals commonly use manual lubrication to add lubricant to dental handpieces, as shown in Figure 9. Lubrication is applied to the dental handpiece 400 via oil bottle 300 and spray nozzle 301. However, this traditional manual lubrication method has a significant drawback: it easily leads to lubricant splashing. Analysis reveals that the cause of lubricant splashing is the accidental ejection of lubricant from the handpiece's drain port (both the drain and fill ports are located at the rear of the handpiece). Figure 9 As shown in the figure, this can lead to splashing; during the process, the oil inlet may not be accurately aligned with the oil filling part of the dental handpiece, causing some lubricating oil to splash in all directions during filling.
[0020] For the reasons mentioned above, such as Figures 1-10As shown, this embodiment provides a manual oil filling protector for a dental handpiece, including a cover 100 and an oil collection bag 200. The cover 100 is flared, with one end having a larger diameter and the other end having a smaller diameter. An interface portion 101 is located at the smaller diameter end of the cover 100. The inner wall of the cover has an oil collection portion 102. An oil outlet pipe 103 is provided at the bottom of the oil collection groove 102, and the oil outlet pipe 103 is connected to the oil collection bag 200. An air valve is provided at the upper part of the oil collection bag 200. Preferably, the oil collection groove is located at the larger diameter end of the cover and is a circumferential annular groove. The cover and the oil collection bag are transparent and visible.
[0021] The aforementioned technical features enable protection during manual lubrication, preventing oil splashing and environmental impact. In use, the cover is installed on the spray pipe 301 via the interface, using a flared cover to protect the spray area, allowing splashed oil to fall onto the inner wall of the cover. The oil on the cover collects in the oil collection trough and is then drained into the oil collection bag for centralized disposal. The transparent cover and oil collection bag facilitate observation by workers, and the air valve in the oil collection bag allows oil to automatically enter the bag under gravity.
[0022] In order to facilitate the entry of oil (lubricating oil) on the inner wall of the cover into the oil collection groove, in one embodiment, the inner wall of the cover 100 is also provided with several oil collection rings 104 with different inner diameters. The oil collection rings 104 are located on the oil inlet side of the oil collection part, and the oil inlet side is the side near the small diameter end. Adjacent oil collecting rings are connected by an axially arranged oil drain 105 and converge in the oil collecting groove.
[0023] Preferably, the inner wall of the cover has an oleophobic layer to facilitate the sliding off of oil.
[0024] The above-mentioned technical features facilitate the collection of oil on the inner wall of the cover. The oil can enter the oil collection ring through the inner wall of the cover and then enter the oil collection tank through the oil vent, so that the oil can be collected and discharged into the oil collection bag.
[0025] To facilitate the adaptation of the cover to more specifications of fuel injection pipes, in one embodiment, the interface portion 101 is equipped with several auxiliary interface pipes 1011 with different inner diameters. Through the auxiliary interface pipes of different diameters, the interface portion can be installed on multiple fuel injection pipes of different diameters.
[0026] To better connect the oil collection bag to the cover, such as Figures 5-8 As shown, in one embodiment, an oil receiving pipe 201 is provided at the upper end of the oil receiving bag, and the oil receiving pipe 201 is connected to the oil outlet pipe 103. The oil outlet pipe 103 is provided with several turns of inverted conical connecting parts 1031 at the connection with the oil receiving pipe, which are larger at the top and smaller at the bottom.
[0027] The above-mentioned technical features enable detachable connection of the oil receiving bag, and the inverted conical connecting part can improve the stability of the connection and reduce the risk of slippage.
[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A manual lubrication protector for dental handpieces, characterized in that: It includes a cover and an oil collection bag. The cover is a flared shape with a large diameter at one end and a small diameter at the other end. It has an interface at the small diameter end of the cover and an oil collection part on the inner wall of the cover. An oil outlet pipe is provided at the bottom of the oil collection tank and is connected to the oil collection bag.
2. The manual lubrication protector for a dental handpiece according to claim 1, characterized in that: The oil collection groove is located at the large-diameter end of the cover and is a circumferential annular groove.
3. The manual lubrication protector for a dental handpiece according to claim 1, characterized in that: The inner wall of the cover is also provided with several oil collecting rings with different inner diameters. The oil collecting rings are located on the oil inlet side of the oil collecting part, and the oil inlet side is the side near the small diameter end. Adjacent oil collecting rings are connected by axially arranged oil drains and converge in the oil collecting grooves.
4. The manual lubrication protector for a dental handpiece according to claim 1, characterized in that: The interface section is equipped with several auxiliary interface tubes with different inner diameters.
5. The manual lubrication protector for a dental handpiece according to claim 1, characterized in that: The upper end of the oil receiving bag is provided with an oil receiving pipe, which is connected to the oil outlet pipe.
6. The manual lubrication protector for a dental handpiece according to claim 5, characterized in that: The oil outlet pipe is provided with several turns of inverted conical connecting parts at the connection point with the oil inlet pipe, which are larger at the top and smaller at the bottom.
7. The manual lubrication protector for a dental handpiece according to claim 5, characterized in that: An air valve is provided at the top of the oil receiving bag.
8. A manual lubrication protector for a dental handpiece according to any one of claims 1-7, characterized in that: The cover and oil collection bag are transparent and visible.