Pneumatic generator for dental handpiece

Abstract

The utility model discloses a pneumatic generator for a dental handpiece, which relates to the technical field of dental instruments and comprises a shell, a stator component mounted in the shell and a rotor component arranged in the stator component. A collecting ring is installed on the driving shaft, the shell is composed of a shell base and a peripheral shell, an air cavity is formed in the shell base, the pneumatic fan blades are installed in the air cavity, and a circle of evenly-spaced air vents are further formed in the periphery of the shell base in a surrounding mode. According to the utility model, a circle of uniformly spaced air vents are arranged on the periphery of the outer part of the shell seat, and the arc-shaped air inlet channels are arranged on the air vents, so that high-pressure air can obliquely enter the air cavity through the air vents, and further, the pneumatic fan blades can be driven to rotate more efficiently, so as to improve the power generation efficiency; and the use effect of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of dental instrument technology, specifically a pneumatic generator for dental handpieces. Background Technology

[0002] A dental handpiece is a commonly used oral medical instrument used for drilling, cutting, grinding, and polishing teeth. Since the working area is inside the oral cavity, it requires illumination. Currently, two methods are generally used: one is external lighting, which requires an external lighting device, increases the operational steps, is inconvenient, and can easily obstruct vision and affect the operation of the dental handpiece; the other method is to have a built-in light source within the dental handpiece. This method is generally used in high-speed dental handpieces. High-speed dental handpieces have a high-speed turbine inside the handpiece head, driven by high-pressure gas. When a built-in light source is needed, a pneumatic generator and lamp body are usually installed inside the dental handpiece. High-pressure air drives the generator to generate electricity, which then powers the lamp body to provide illumination.

[0003] A Chinese patent publication (CN203017114U) discloses a dental handpiece with a front-mounted light source and a generator that connects to the handle. Research into the prior art revealed that the existing dental handpieces have a limited range of pneumatic generator inlets with poor air intake efficiency. Therefore, this utility model proposes a pneumatic generator for dental handpieces. Utility Model Content

[0004] Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pneumatic generator for dental handpieces.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pneumatic generator for dental handpieces, comprising a housing, a stator assembly installed inside the housing, and a rotor assembly disposed inside the stator assembly, wherein a drive shaft is fixed inside the rotor assembly, and a slip ring is mounted on the drive shaft;

[0008] The housing consists of a housing base and an outer peripheral housing. An air chamber is formed inside the housing base, and the pneumatic fan blades are installed within the air chamber. A ring of evenly spaced air vents is also arranged around the outer periphery of the housing base, with arc-shaped air inlets on each vent. An exhaust port is located at one end of the housing base. The arc-shaped air inlets allow high-pressure gas to enter the air chamber at an angle through the air vents, thereby driving the pneumatic fan blades to rotate more efficiently, improving power generation efficiency, enhancing the device's effectiveness, and increasing its practicality.

[0009] Preferably, the stator assembly includes stator windings and a stator core.

[0010] Preferably, a sealing groove is provided on the housing base, and a sealing gasket is provided inside the sealing groove.

[0011] Preferably, the vent and exhaust ports are separated into two independent spaces by a sealing gasket, and the vent is connected to a high-pressure gas supply.

[0012] Preferably, there are multiple exhaust ports, which are evenly distributed in a circular shape at one end of the housing base.

[0013] Preferably, a pneumatic fan blade is fixedly mounted on one end of the drive shaft.

[0014] Beneficial effects:

[0015] Compared with existing technologies, this pneumatic generator for dental handpieces has the following advantages:

[0016] This invention features a ring of evenly spaced vents around the outer perimeter of the housing, with an arc-shaped air intake channel on each vent. This arc-shaped air intake channel allows high-pressure gas to enter the air chamber at an angle through the vents, thereby driving the pneumatic fan blades to rotate more efficiently, thus improving power generation efficiency and enhancing the device's effectiveness and practicality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 4 This is a cross-sectional view of the housing base of this utility model.

[0022] In the picture:

[0023] 1. Housing; 2. Stator assembly; 3. Rotor assembly; 4. Drive shaft; 5. Slip ring; 7. Pneumatic fan blade; 8. Wire; 101. Housing base; 102. Outer peripheral housing; 1011. Air chamber; 1012. Vent; 1013. Arc-shaped air intake channel; 1014. Exhaust port; 1015. Sealing groove; 1016. Sealing gasket; 201. Stator winding; 202. Stator core. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 As shown, this utility model provides a technical solution: a pneumatic generator for dental handpieces, including a housing 1, a stator assembly 2 installed inside the housing 1, the stator assembly 2 including a stator winding 201 and a stator core 202, and a rotor assembly 3 disposed inside the stator assembly 2. A drive shaft 4 is fixed inside the rotor assembly 3, a slip ring 5 is installed on the drive shaft 4, and a pneumatic fan blade 7 is fixedly installed at one end of the drive shaft 4. The working principle of this device is the same as that of pneumatic generators in the prior art, and no improvement has been made. Both generate electricity by rotating the pneumatic fan blade 7 to drive the rotor assembly 3 to rotate inside the stator assembly 2. The electricity generated by this device is transmitted through a wire 8.

[0026] Please refer to the following carefully. Figure 1 , Figure 2 and Figure 4The housing 1 consists of a housing base 101 and an outer peripheral housing 102. An air chamber 1011 is formed inside the housing base 101, and the pneumatic fan blade 7 is installed in the air chamber 1011. A ring of evenly spaced air vents 1012 is also arranged around the outer periphery of the housing base 101. An arc-shaped air inlet channel 1013 is provided on each air vent 1012. An exhaust port 1014 is provided at one end of the housing base 101. The arc-shaped air inlet channel 1013 allows high-pressure gas to enter the air chamber 1011 at an angle through the air vents 1012, thereby driving the pneumatic fan blade 7 to rotate more efficiently, improving power generation efficiency, and thus enhancing the effectiveness and practicality of the device.

[0027] Please refer to the following carefully. Figure 3 A sealing groove 1015 is provided on the housing base 101. A sealing gasket 1016 is provided inside the sealing groove 1015. The vent 1012 and the exhaust port 1014 are separated into two independent spaces by the sealing gasket 1016. The vent 1012 is connected to the high-pressure gas supply. There are multiple exhaust ports 1014, which are evenly distributed in a circular shape at one end of the housing base 101.

[0028] Working principle: A ring of evenly spaced air vents 1012 is provided around the outer side of the housing 101, and an arc-shaped air intake channel 1013 is provided on the air vents 1012. The arc-shaped air intake channel 1013 allows high-pressure gas to enter the air chamber 1011 at an angle through the air vents 1012, thereby driving the pneumatic fan blade 7 to rotate more efficiently.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply 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 process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic generator for dental handpieces, characterized in that: Includes a housing (1), a stator assembly (2) installed inside the housing (1), and a rotor assembly (3) disposed inside the stator assembly (2). A drive shaft (4) is fixed inside the rotor assembly (3), a slip ring (5) is installed on the drive shaft (4), and a pneumatic fan blade (7) is fixedly installed at one end of the drive shaft (4). The housing (1) is composed of a housing base (101) and an outer peripheral housing (102). An air chamber (1011) is provided inside the housing base (1011). The pneumatic fan blade (7) is installed in the air chamber (1011). A ring of evenly spaced air vents (1012) is also provided around the outer periphery of the housing base (101). An arc-shaped air intake channel (1013) is provided on the air vents (1012). An exhaust port (1014) is provided at one end of the housing base (101).

2. The pneumatic generator for dental handpieces according to claim 1, characterized in that: The stator assembly (2) includes a stator winding (201) and a stator core (202).

3. A pneumatic generator for dental handpieces according to claim 1, characterized in that: A sealing groove (1015) is provided on the upper part of the housing base (101), and a sealing gasket (1016) is provided inside the sealing groove (1015).

4. A pneumatic generator for dental handpieces according to claim 3, characterized in that: The vent (1012) and the exhaust (1014) are separated into two independent spaces by a sealing gasket (1016), and the vent (1012) is connected to a high-pressure gas supply.

5. A pneumatic generator for a dental handpiece according to claim 4, characterized in that: There are multiple exhaust ports (1014), which are evenly distributed in a circular shape at one end of the housing base (101).

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