Dental equipment precision bearing with dustproof and waterproof functions

Abstract

The invention provides a dental equipment precision bearing with dustproof and waterproof functions, and relates to the technical field of dental equipment parts, the dental equipment precision bearing comprises a bearing inner ring and a bearing outer ring, a bearing rolling body is mounted between the bearing inner ring and the bearing outer ring through a retainer, two outer limiting grooves are formed in the two edges of the inner surface of the bearing outer ring respectively, and the bearing rolling body is mounted in the outer limiting grooves. The quick-release dustproof baffle is installed in front of the bearing, the outer edge of the quick-release dustproof baffle is attached to the inner wall, where the bearing is installed, of the high-speed turbine mobile phone, the bearing is completely isolated from the outside, external liquid or dust or other impurities can be prevented from entering the mobile phone in the operation process, and the influence on operation of precise parts in the mobile phone is avoided; the mobile phone is prevented from being damaged by water or impurities, and the problems that the cleaning work of the high-speed turbine mobile phone is tedious, the cleaning is not thorough, bacteria and viruses are easy to hide and diseases are easy to spread due to the fact that an external sealing ring of a miniature bearing is not easy to disassemble in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of dental equipment parts, and in particular to a dental equipment precision bearing with dustproof and waterproof functions. Background Art

[0002] The performance of dental high-speed turbine handpiece bearings directly affects the service life, speed stability, vibration and noise level of dental handpieces. The design of dental high-speed turbine handpiece bearings must take into account high-speed rotation, high precision, low friction, low noise, corrosion resistance and good lubrication performance. Most of them are miniature deep groove ball bearings to meet the strict requirements of precision and efficiency in dental treatment. Traditional dental high-speed turbine handpiece bearings are used to support the handpiece drill bit. When the handpiece drill bit is used to grind the teeth, the turbine handpiece will spray water mist to make the bearings work in a humid environment. If the bearing sealing performance is poor, the liquid in the mouth will pass through the bearing and enter the inside of the handpiece, which will cause corrosion to the internal components of the handpiece and reduce the service life of the high-speed turbine handpiece.

[0003] After a single use, traditional dental high-speed turbine handpieces require disinfection of the high-speed turbine handpiece drill bit and outer surface. However, the external sealing ring of the micro bearing in the existing technology is not easy to remove, which makes the cleaning of the high-speed turbine handpiece cumbersome. Incomplete cleaning can easily harbor bacteria and viruses, which can easily cause the spread of disease. Summary of the Invention

[0004] The present invention provides a precision bearing for dental equipment with dustproof and waterproof functions to solve the problem that after a single use, the drill bit and outer surface of a traditional dental high-speed turbine handpiece need to be disinfected. In the prior art, the external sealing ring of the miniature bearing is difficult to disassemble, resulting in cumbersome cleaning of the high-speed turbine handpiece. Incomplete cleaning can easily harbor bacteria and viruses, which can easily cause the spread of diseases.

[0005] The present invention provides a precision bearing for dental equipment with dustproof and waterproof functions, specifically comprising: a bearing inner ring and a bearing outer ring, wherein a bearing rolling element is installed between the bearing inner ring and the bearing outer ring through a retaining frame, an outer limiting groove is respectively opened on both edges of the inner surface of the bearing outer ring, an outer sealing baffle is sleeved on the outside of the outer limiting groove through an interference fit, an inner limiting groove is respectively opened on both edges of the outer surface of the bearing inner ring, an inner sealing baffle is installed on the outside of the inner limiting groove through an interference fit, and an inner limiting groove is opened on the front surface of the bearing inner ring A sealing ring insert ring with an annular structure, a quick-release dust baffle is provided in front of the bearing outer ring, the quick-release dust baffle is a circular rubber sheet, the quick-release dust baffle is processed with a baffle folding groove, the baffle folding groove is tightly inserted into the sealing ring insert ring, an expansion plug-in ring groove is provided in front of the baffle folding groove, a quick-connect positioning ring is connected to the front of the quick-release dust baffle, the quick-connect positioning ring is an annular plate made of stainless steel, a positioning folding ring is bent at the rear of the quick-connect positioning ring, and the rear of the positioning folding ring is tightly inserted into the expansion plug-in ring groove.

[0006] Furthermore, an outer baffle rubber coating is connected to the outer sealing baffle, and the outer surface of the outer baffle rubber coating is tightly fitted with the outer limiting groove.

[0007] Furthermore, the opening of the outer baffle rubber coating faces the center direction of the outer sealing baffle, and the opening edge of the outer baffle rubber coating is processed with an outer sealing ring, and the outer edge of the outer sealing ring is in contact with the inner limiting groove.

[0008] Furthermore, the inner sealing baffle is outer-connected with an inner baffle rubber coating, and the outer surface of the inner baffle rubber coating is tightly fitted with the inner surface of the inner limiting groove.

[0009] Furthermore, the opening of the inner baffle rubber coating faces the direction opposite to the center of the inner sealing baffle, and the opening edge of the inner baffle rubber coating is processed with an inner sealing ring, and the outer edge of the inner sealing ring fits with the inner surface of the bearing outer ring.

[0010] Furthermore, the sealing ring insert is a trapezoidal ring groove with a cross section that is narrow at the front and wide at the back.

[0011] Furthermore, the cross section of the baffle folding groove is a square structure, the expansion plug ring groove is a trapezoidal ring groove with a cross section that is narrow in the front and wide in the back, and inner notches are provided on the inner edge and outer edge of the inner groove surface of the expansion plug ring groove.

[0012] Furthermore, both the outer edge and the inner edge of the rear surface of the positioning folding ring body are processed with inserting ring limiting edges.

[0013] Furthermore, the two insert ring limiting edges are respectively located inside the two inner notches.

[0014] Furthermore, the outer edge of the quick-connect positioning ring is bent forward to form an outer folded edge of the positioning ring in a "C" shape.

[0015] The present invention provides a precision bearing for dental equipment with dustproof and waterproof functions, which has the following beneficial effects: The compact bearing for a dental high-speed turbine handpiece of the present invention is used to support and install a dental high-speed turbine handpiece drill bit. The high-speed motor inside the handpiece rotates and drives the handpiece drill bit to rotate at high speed through a transmission shaft. A quick-release dust baffle is installed in front of the bearing. The outer edge of the quick-release dust baffle fits with the inner wall of the high-speed turbine handpiece mounting bearing, and the inner edge of the quick-release dust baffle fits with the outer surface of the drill bit, completely isolating the bearing from the outside world. This can prevent external impurities such as liquid or dust from entering during the operation of the handpiece, avoid affecting the operation of the precision components inside the handpiece, and prevent the handpiece from being damaged by water or impurities entering.

[0016] In addition, the quick-release dust baffle in the present invention is fixedly installed in front of the bearing by plugging the baffle folding groove and the sealing ring insert ring, and a quick-connect positioning ring is covered in front of the quick-release dust baffle. Under normal circumstances, the insert ring limit edge is plugged into the expansion insert ring groove, so that the baffle folding groove expands inside the sealing ring insert ring, thereby increasing the connection firmness between the quick-release dust baffle and the bearing. After the use of the dental high-speed turbine mobile phone, when the dental high-speed turbine mobile phone is disinfected, the quick-connect positioning ring is pulled forward by a tool to separate the positioning folding ring from the expansion insert ring groove, and the baffle folding groove shrinks and recovers from the expanded state, releasing the fast connection between the quick-release dust baffle and the bearing, thereby completing the rapid disassembly of the quick-release dust baffle. The quick-release dust baffle is easy to disassemble and easy to clean and disinfect, which can improve the cleaning efficiency and disinfection effect of the dental high-speed turbine mobile phone. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached figure: Figure 1 A schematic diagram showing the overall structure of the present application; Figure 2 Shows a schematic diagram of the internal structure of this application; Figure 3 It shows a schematic structural diagram of the quick-connect positioning ring of the present application in a disassembled state; Figure 4 It shows a schematic structural diagram of the bearing of the present application in a disassembled state; Figure 5 Shows this application Figure 4 Schematic diagram of the structure in front of ; Figure 6 A schematic diagram of the structure of the outer sealing baffle and the bearing inner ring of the present invention is shown; Figure 7 A schematic diagram of the structure of the inner sealing baffle and the bearing outer ring of the present invention is shown; Figure 8 It shows a schematic structural diagram of the quick-release dust baffle and quick-connect positioning ring of the present application; Figure 9 Shows the application Figure 2 A schematic diagram of the partially enlarged structure at point A in the middle; Figure 10 Shows the application Figure 2 A schematic diagram of the partially enlarged structure at point B in the middle; Figure 11 Shows the application Figure 3 Schematic diagram of the partially enlarged structure at point C in the middle.

[0020] Reference numerals: 1. Bearing inner ring; 101. Inner limit groove; 102. Sealing ring insert; 2. Bearing outer ring; 201. Outer limit groove; 3. Outer sealing baffle; 301. Outer baffle rubber coating; 302. Outer sealing ring; 4. Inner sealing baffle; 401. Inner baffle rubber coating; 402. Inner sealing ring; 5. Bearing rolling element; 6. Quick-release dust baffle; 601. Baffle folding groove; 602. Expansion plug-in ring groove; 603. Inner notch; 7. Quick-connect locating ring; 701. Locating folding ring; 702. Insert ring limit edge; 703. Locating ring outer folding edge. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described 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.

[0022] Example 1: Please refer to Figures 1 to 11 : The present invention proposes a precision bearing for dental equipment with dustproof and waterproof functions, comprising: a bearing inner ring 1 and a bearing outer ring 2, a bearing rolling element 5 is installed between the bearing inner ring 1 and the bearing outer ring 2 through a retaining frame, an outer limiting groove 201 is respectively opened on the two edges of the inner surface of the bearing outer ring 2, an outer sealing baffle 3 is sleeved on the outside of the outer limiting groove 201 through interference fit, an inner limiting groove 101 is respectively opened on the two edges of the outer surface of the bearing inner ring 1, an inner sealing baffle 4 is installed on the outside of the inner limiting groove 101 through interference fit, a sealing ring insert ring 102 of an annular structure is opened on the front surface of the bearing inner ring 1, a quick-release dust baffle 6 is provided in front of the bearing outer ring 2, the quick-release dust baffle 6 is a circular rubber sheet, the quick-release dust baffle 6 is processed with a baffle folding groove 601, the baffle folding groove 601 is tightly inserted into the inside of the sealing ring insert ring 102, an expansion plug-in ring groove 602 is provided in front of the baffle folding groove 601, and the front of the quick-release dust baffle 6 is connected to the The quick-connect positioning ring 7 is connected, and the quick-connect positioning ring 7 is a ring-shaped plate made of stainless steel. The quick-connect positioning ring 7 is bent at the rear to provide a positioning fold ring 701, and the rear of the positioning fold ring 701 is tightly inserted into the expansion plug-in ring groove 602; under normal circumstances, the quick-release dust baffle 6 is fixedly installed in front of the bearing through the baffle folding groove 601 and the sealing ring 102, and is covered with a quick-connect positioning ring 7 in front of the quick-release dust baffle 6. Under normal circumstances, the ring limiting edge 702 is inserted into the expansion plug-in ring groove 602, so that the baffle folding groove 601 expands inside the sealing ring 102, thereby increasing the connection firmness between the quick-release dust baffle 6 and the bearing, the outer edge of the quick-release dust baffle 6 fits with the inner wall of the high-speed turbine mobile phone mounting bearing, and the inner edge of the quick-release dust baffle 6 fits with the outer surface of the drill bit, completely isolating the bearing from the outside world, and can prevent external liquid or dust and other impurities from entering during the operation of the mobile phone, thereby intercepting liquid and dust.

[0023] In the embodiment of the present disclosure, the outer sealing baffle 3 is connected to the outer baffle rubber coating 301, the outer surface of the outer baffle rubber coating 301 is tightly fitted with the outer limit groove 201, the opening of the outer baffle rubber coating 301 is facing the center direction of the outer sealing baffle 3, and the opening edge of the outer baffle rubber coating 301 is processed with an outer sealing ring 302, the outer edge of the outer sealing ring 302 is fitted with the inner limit groove 101, and the gap between the bearing inner ring 1 and the bearing outer ring 2 is sealed by the arrangement of the outer sealing baffle 3, the outer baffle rubber coating 301 and the outer sealing ring 302. The outer sealing ring 302 prevents external impurities from entering the gap between the bearing inner ring 1 and the bearing outer ring 2. The outer baffle rubber coating 301 has good elasticity, and the outer baffle rubber coating 301 can be separated from the outside of the outer sealing baffle 3, which is convenient for cleaning and disinfection of the outer sealing baffle 3, the outer baffle rubber coating 301 and the outer sealing ring 302.

[0024] In the embodiment of the present disclosure, the inner sealing baffle 4 is outer-connected with an inner baffle rubber coating 401, and the outer surface of the inner baffle rubber coating 401 is tightly fitted with the inner surface of the inner limit groove 101; the opening of the inner baffle rubber coating 401 is facing in the direction opposite to the center of the inner sealing baffle 4, and the opening edge of the inner baffle rubber coating 401 is processed with an inner sealing ring 402, and the outer edge of the inner sealing ring 402 is fitted with the inner surface of the bearing outer ring 2; through the cooperation of the inner sealing baffle 4, the inner baffle rubber coating 401 and the inner sealing ring 402, the gap between the bearing inner ring 1 and the bearing outer ring 2 is further sealed, and double sealing is achieved by the outer sealing ring 302 and the inner sealing ring 402, further reducing the probability of external liquid or dust and other impurities entering the bearing.

[0025] In the embodiment of the present disclosure, the sealing ring insert 102 is a trapezoidal ring groove with a cross-section that is narrow in front and wide in the back. The inner edge and outer edge of the inner groove surface of the expansion plug-in ring groove 602 are both provided with inner notches 603; the baffle folding groove 601 is inserted into the interior of the sealing ring insert 102, and the quick-release dust baffle 6 is fixedly connected to the bearing inner ring 1 through the connection between the baffle folding groove 601 and the sealing ring insert 102. The outer edge and inner edge of the quick-release dust baffle 6 are both provided with bevel edges. The outer edge and inner edge of the quick-release dust baffle 6 are respectively fitted with the inner wall of the high-speed turbine mobile phone mounting bearing and the outer surface of the drill bit, thereby playing a dust-proof and waterproof role, and preventing external water or dust from contacting the bearing.

[0026] In the embodiment of the present disclosure, the cross-section of the baffle folding groove 601 is a square structure, and the expansion plug-in ring groove 602 is a trapezoidal ring groove with a cross-section that is narrow in the front and wide in the back; when the positioning folding ring 701 is inserted into the expansion plug-in ring groove 602, the baffle folding groove 601 is expanded by the support of the positioning folding ring 701, so that the connection between the baffle folding groove 601 and the sealing ring plug-in ring 102 is tighter, and the baffle folding groove 601 is not easy to separate from the sealing ring plug-in ring 102 with a trapezoidal cross-section, so that the installation of the quick-release dust baffle 6 is more stable.

[0027] Example 2. On the basis of Example 1, the outer edge and inner edge of the rear surface of the positioning fold ring 701 are both processed with an insert ring limiting edge 702, and the two insert ring limiting edges 702 are respectively located inside the two inner notches 603; by docking the insert ring limiting edge 702 with the inner notches 603, the firmness of the connection between the positioning fold ring 701 and the expansion plug-in ring groove 602 is improved, and the outer edge of the quick-connect positioning ring 7 is bent forward to form a "C"-shaped positioning ring outer fold edge 703. Through the setting of the positioning ring outer fold edge 703, it is convenient to extract and disassemble the quick-connect positioning ring 7 through tools such as hooks and tweezers, thereby improving the disassembly and installation efficiency of the quick-connect positioning ring 7 and the quick-release dust baffle 6.

[0028] The working principle of this embodiment is as follows: First, under normal conditions, the inner surface of the bearing inner ring 1 is tightly fitted with the outer surface of the drill bit, so that the bearing is installed outside the drill bit through an interference fit, and the outer surface of the bearing outer ring 2 is tightly fitted with the inner surface of the mobile phone, and the drill bit is oriented and supported by the bearing. The quick-release dust baffle 6 is fixedly installed in front of the bearing through the baffle folding groove 601 and the sealing ring 102, and a quick-connect positioning ring 7 is covered in front of the quick-release dust baffle 6. Under normal conditions, the ring limit edge 702 is inserted into the expansion plug-in ring groove 602, so that the baffle folding groove 6 01 expands inside the sealing ring insert 102, thereby increasing the connection firmness between the quick-release dust baffle 6 and the bearing. The outer edge of the quick-release dust baffle 6 fits with the inner wall of the high-speed turbine mobile phone mounting bearing, and the inner edge of the quick-release dust baffle 6 fits with the outer surface of the drill bit, completely isolating the bearing from the outside world, which can prevent external liquid or dust and other impurities from entering during the operation of the mobile phone, and plays a role in intercepting liquid and dust. The outer edge of the outer sealing ring 302 fits with the inner limit groove 101, and through the outer sealing baffle 3, the outer baffle rubber coating 301 and the outer sealing ring 302 The gap between the inner ring 1 and the outer ring 2 of the bearing is sealed, and the outer sealing ring 302 is used to prevent external impurities from entering the gap between the inner ring 1 and the outer ring 2 of the bearing; the gap between the inner ring 1 and the outer ring 2 of the bearing is further sealed by the cooperation of the inner sealing baffle 4, the inner baffle rubber coating 401 and the inner sealing ring 402, and double sealing is achieved by the outer sealing ring 302 and the inner sealing ring 402, further reducing the probability of external liquids or dust and other impurities entering the bearing; after completing the work of the mobile phone, the outer surface of the mobile phone is sealed with a and drill bit for cleaning, and then use a tool hook or tweezers to hook the outer folded edge 703 of the positioning ring, pull the quick-connect positioning ring 7 forward, and pull the quick-connect positioning ring 7 out from the front of the quick-release dust baffle 6, so that the positioning folded ring 701 is disengaged from the expansion plug-in ring groove 602, and the expansion plug-in ring groove 602 loses the support of the positioning folded ring 701, causing the baffle folded groove 601 to shrink, so that the baffle folded groove 601 is no longer tightly filled in the sealing ring plug-in ring 102, and the connection between the quick-release dust baffle 6 and the bearing is released. Use tweezers or a tool hook to pull the quick-release dust baffle 6 away from the end of the mobile phone.

[0029] In this article, there are several points to note: 1. The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0030] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0031] The above are only specific embodiments of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A precision bearing for dental equipment with dust and water proof functions, comprising: A bearing inner ring (1) and a bearing outer ring (2), wherein a bearing rolling element (5) is installed between the bearing inner ring (1) and the bearing outer ring (2) via a retaining frame, characterized in that an outer limiting groove (201) is respectively provided on both edges of the inner surface of the bearing outer ring (2), an outer sealing baffle (3) is sleeved on the outside of the outer limiting groove (201) through an interference fit, an inner limiting groove (101) is respectively provided on both edges of the outer surface of the bearing inner ring (1), an inner sealing baffle (4) is installed on the outside of the inner limiting groove (101) through an interference fit, a sealing ring insert (102) of an annular structure is provided on the front surface of the bearing inner ring (1), and the outer A quick-release dustproof baffle (6) is provided in front of the ring (2), the quick-release dustproof baffle (6) is a circular rubber sheet, the quick-release dustproof baffle (6) is processed with a baffle folding groove (601), the baffle folding groove (601) is tightly plugged into the inside of the sealing ring plug ring (102), an expansion plug-in ring groove (602) is provided in front of the baffle folding groove (601), a quick-connect positioning ring (7) is connected in front of the quick-release dustproof baffle (6), the quick-connect positioning ring (7) is a ring plate made of stainless steel, a positioning folding ring (701) is provided at the rear of the quick-release positioning ring (7), and the rear of the positioning folding ring (701) is tightly plugged into the inside of the expansion plug-in ring groove (602).

2. The dental equipment precision bearing with dustproof and waterproof functions according to claim 1, characterized in that: The outer sealing baffle (3) is externally connected to an outer baffle rubber coating (301), and the outer surface of the outer baffle rubber coating (301) is tightly fitted with the outer limiting groove (201).

3. The dental equipment precision bearing with dustproof and waterproof functions according to claim 2, characterized in that: The opening of the outer baffle rubber coating (301) faces the center direction of the outer sealing baffle (3), and the opening edge of the outer baffle rubber coating (301) is processed with an outer sealing ring (302), and the outer edge of the outer sealing ring (302) is in contact with the inner limiting groove (101).

4. The dental equipment precision bearing with dustproof and waterproof functions according to claim 1, characterized in that: The inner sealing baffle (4) is externally connected to an inner baffle rubber coating (401), and the outer surface of the inner baffle rubber coating (401) is tightly fitted to the inner surface of the inner limiting groove (101).

5. The dental equipment precision bearing with dustproof and waterproof functions according to claim 2, characterized in that: The opening of the inner baffle rubber coating (401) faces in a direction opposite to the center of the inner sealing baffle (4), and an inner sealing ring (402) is processed on the opening edge of the inner baffle rubber coating (401), and the outer edge of the inner sealing ring (402) is in contact with the inner surface of the bearing outer ring (2).

6. The dental equipment precision bearing with dustproof and waterproof functions according to claim 1, characterized in that: The sealing ring insert (102) is a trapezoidal ring groove with a cross section that is narrow at the front and wide at the back.

7. The dental equipment precision bearing with dustproof and waterproof functions according to claim 1, characterized in that: The baffle folding groove (601) has a square cross-section, and the expansion plug-in ring groove (602) is a trapezoidal ring groove with a cross-section that is narrow in the front and wide in the back. The inner groove surface of the expansion plug-in ring groove (602) is provided with inner notch openings (603) on both the inner edge and the outer edge.

8. The dental equipment precision bearing with dustproof and waterproof functions according to claim 7, characterized in that: The outer edge and the inner edge of the rear surface of the positioning folding ring (701) are both processed with an inserting ring limiting edge (702).

9. The dental equipment precision bearing with dustproof and waterproof functions according to claim 8, characterized in that: The two insert ring limiting edges (702) are respectively located inside the two inner notches (603).

10. The dental equipment precision bearing with dustproof and waterproof functions according to claim 1, characterized in that: The outer edge of the quick-connect positioning ring (7) is bent forward to form a positioning ring outer folded edge (703) with a "C"-shaped structure.

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