Dental instrument handle shell

Abstract

The utility model discloses a dental instrument handle shell, and relates to the field of tooth cleaning machines, the dental instrument handle shell comprises a handle body and a tail plug, an auxiliary dismounting mechanism convenient for dismounting the handle shell is arranged in the handle body and the tail plug, a sleeve and convex blocks fixedly arranged on the outer surface of the sleeve are utilized, and circumferential textures are formed according to the design of a circumferential array of the convex blocks; the friction force generated when a worker holds the handle is increased, the problem that a traditional smooth handle is prone to slipping is solved, by means of horizontal movement of the electric push rod, the clamping block is driven to be rotationally fixed or unlocked, compared with heating or disassembling in the prior art, the time is shorter, unnecessary harm to the worker when a tool is used for disassembling is avoided, and the working efficiency is improved. And the dismounting process is relatively simple, and the dependence on professional tools and complex operation is reduced.

Description

Technical Field

[0001] This application relates to the field of dental scalers, and more particularly to a dental instrument handle housing. Background Technology

[0002] The most common dental scaler handle is a handle installed at the front of the scaler. The dental scaler handle is used to help position the scaler to accurately clean plaque and stains in the interdental spaces and polish the tooth surface. Replacing the sandblasting tube can reduce costs and improve the sandblasting effect.

[0003] The existing dental scaler handle housing and wiring terminals are fixedly connected by hot melt adhesive. However, hot melt adhesive bonding is an irreversible fixing method. When maintaining and replacing the sandblasting tube, it is necessary to heat and soften it or pry it open. This results in extra time being spent cleaning residual adhesive and re-bonding each time the sandblasting tube is replaced. In addition, a hot air gun or solvent (such as acetone) is required to assist in disassembly. The operation is complicated, poses safety hazards, and wastes a lot of resources. At the same time, the replacement area of ​​the sandblasting dental scaler handle is smooth, which is not conducive to users replacing and disassembling. Utility Model Content

[0004] To address the issue of the difficulty in disassembling the handle housing, this application provides a dental instrument handle housing.

[0005] The technical solution for a dental instrument handle housing provided in this application is as follows:

[0006] A dental instrument handle housing includes a handle body and a tail plug.

[0007] The handle body and the tail plug are equipped with an auxiliary disassembly mechanism to facilitate the removal of the handle shell.

[0008] By adopting the above technical solutions, the auxiliary disassembly mechanism enables quick and non-destructive disassembly and assembly of the handle shell, avoiding maintenance difficulties caused by traditional hot melt glue or threaded connections, and improving the maintainability and service life of the equipment.

[0009] Preferably, the auxiliary disassembly mechanism includes a sleeve fixedly connected to the outer surface of the handle body, and a plurality of protrusions are fixedly arranged in a circumferential array on the outer surface of the sleeve.

[0010] By adopting the above technical solution, the sleeve serves as a guide structure for connecting the tail plug, ensuring the axial transmission of force during disassembly and providing a non-slip grip surface to facilitate the operator's application of force. The protrusions are used to increase friction and prevent slippage during disassembly.

[0011] Preferably, a connecting post is fixedly connected to one end of the handle body, and a protruding ring is fixedly connected to the outer surface of the end of the connecting post away from the handle body.

[0012] By adopting the above technical solution, the connecting post serves as the core connecting shaft between the handle body and the tail plug, transmitting mechanical loads (such as vibration and tension), and the convex ring is a limiting structure to prevent the tail plug from being over-inserted and causing damage to internal components.

[0013] Preferably, a cylinder is fixedly connected inside the tail plug, and a connecting plate is fixedly connected to one end of the cylinder near the inside of the tail plug.

[0014] By adopting the above technical solution, the cylinder serves as the main support structure, bearing the electric push rod and the snap-fit ​​mechanism, and guiding the auxiliary cylinder to make linear movements, ensuring precise disassembly. The connecting plate is used to fix the electric push rod and the return spring, serving as the mounting base for the power component.

[0015] Preferably, an electric actuator is symmetrically fixed on the side of the connecting plate near the cylinder, and an auxiliary cylinder adapted to slide on the end of the electric actuator away from the connecting plate is fixedly connected to it.

[0016] By adopting the above technical solution, the electric actuator provides linear driving force to push the auxiliary cylinder to move towards the outer end of the cylinder, thereby releasing the locking state of the locking block.

[0017] Preferably, a return spring is fixedly connected between the connecting plate and the auxiliary cylinder.

[0018] By adopting the above technical solution, when the electric actuator retracts, the spring force of the reset spring pulls the auxiliary cylinder back to the initial position, thereby realizing the automatic reset and locking of the locking block.

[0019] Preferably, the outer surface of the auxiliary cylinder is provided with a groove, and a connecting block is engaged inside the groove. One end of the connecting block is fixedly connected to a snap-fit ​​block that is rotatably connected to the inner wall of the cylinder.

[0020] By adopting the above technical solution, the groove is used to guide the connecting block to slide along a specific path, converting the linear motion of the auxiliary cylinder into the rotational motion of the locking block. The connecting block is used to transmit power and adapt to the swing angle of the locking block. The end of the locking block engages with the protrusion of the handle body to achieve mechanical locking.

[0021] Preferably, a support plate located inside the snap-fit ​​block is fixedly connected to the inside of the cylinder, and a sealing ring is fixedly connected to the inner wall of the tail plug away from the tail wire.

[0022] By adopting the above technical solution, the support plate is used to support the connecting column, and the sealing ring is used to form a second waterproof seal.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By using the sleeve and the protrusions fixed on its outer surface, a circular texture is formed according to the design of the circumferential array of protrusions, which increases the friction when the staff holds the handle and solves the problem of slippage of traditional smooth handles;

[0025] 2. By using the horizontal movement of the electric actuator, the locking block is rotated to fix or unlock. Compared with the heating or disassembly in the existing technology, it takes less time, avoids unnecessary injury to workers when using tools for disassembly, and the disassembly process is relatively simple, reducing the reliance on professional tools and complex operations. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application;

[0027] Figure 2 This is an exploded view of the structure of this application;

[0028] Figure 3 This is a schematic diagram of the internal structure of the tail plug in this application;

[0029] Figure 4 This is a schematic diagram of the internal structure of the cylinder in this application.

[0030] Reference numerals: 1. Handle body; 2. Index point; 3. Decorative ring; 4. Cone head; 5. LED light; 6. Light guide post; 7. Tail plug; 8. Tail cable;

[0031] 91. Sleeve; 92. Protrusion; 93. Connecting post; 94. Protruding ring; 95. Cylinder; 96. Connecting plate; 97. Electric actuator; 98. Return spring; 99. Auxiliary cylinder; 910. Groove; 911. Connecting block; 912. Snap-fit ​​block; 913. Support plate; 914. Sealing ring. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0033] This application discloses a dental instrument handle housing.

[0034] Reference Figure 1 , Figure 2A dental instrument handle housing includes a handle body 1 and a tail plug 7. The handle body 1 is the main working body, and a button is fixed on its outer surface for driving the extension and retraction of an electric actuator 97. It is capable of high-temperature and high-pressure sterilization. The outer surface of the handle body 1 indicates that it can be sterilized under high temperature (134°C) and high pressure (0.22MPa). The tail plug 7 connects the plug-in handle to the main unit's water and electrical circuits. A tail wire 8 is fixedly connected to the end of the tail plug 7 away from the handle body 1. Index points 2 are fixed on the outer surfaces of both the handle body 1 and the tail plug 7 to guide the insertion of the tail plug 7 and prevent misalignment. A decorative ring 3 is fitted on one end of the handle body 1. The user can periodically remove the decorative ring 3 and clean it with alcohol. An LED light 5 is fixedly connected to the end of the handle body 1 near the decorative ring 3. The user can remove the LED light 5 for cleaning and high-temperature and high-pressure sterilization. A cone head 4 is threadedly connected to the end of the handle body 1 near the LED light 5. The cone head 4 can be unscrewed. The user can periodically remove the cone head 4 and clean the main rod with alcohol. A light guide post 6 is snapped into the inside of the cone head 4. The user can remove the light guide post 6 for cleaning and high-temperature and high-pressure sterilization. The LED light 5 is located inside the cone head 4.

[0035] In use, the decorative ring 3 is fitted onto the end of the handle body 1 away from the tail plug 7. Then, the light guide post 6 is snapped into the inside of the cone head 4, and the cone head 4 is screwed onto the end of the handle body 1 away from the tail plug 7. The decorative ring 3 is located between the cone head 4 and the handle body 1, thereby ensuring the fixing of the decorative ring 3. Then, the tail plug 7 is inserted into the end of the handle body 1 away from the cone head 4 and connected to the water and electrical circuits of the main unit.

[0036] Reference Figure 3 , Figure 4An auxiliary disassembly mechanism is provided between the handle body 1 and the tail plug 7. The auxiliary disassembly mechanism includes a sleeve 91 fixedly connected to the outer surface of the handle body 1. The sleeve 91 is made of platinum vulcanized silicone. Several protrusions 92 are fixedly arranged in a circular array on the outer surface of the sleeve 91. The protrusions 92 and the sleeve 91 provide a non-slip grip surface for the operator to apply force. The center of one end of the handle body 1 is fixedly connected to a connecting post 93. The connecting post 93 is located at the end away from the cone head 4. The connecting post 93 can integrate a cable channel (such as an optical fiber or water pipe). The outer surface of one end of the connecting post 93 is fixedly connected to a convex ring 94. The convex ring 94 is located on the side away from the handle body 1 and close to the handle body 1. One side of the handle body 1 is flat, which is used to better engage the handle body 1. The center of the inner wall of the tail plug 7 is fixedly connected to the cylinder 95. The inside of the tail plug 7 is fixedly connected to the connecting plate 96, and the cylinder 95 is fixedly connected to the connecting plate 96. The connecting plate 96 is located on the side of the cylinder 95 away from the handle body 1. The cylinder 95 and the connecting plate 96 have the same diameter. One side of the connecting plate 96 is eccentrically fixed to the fixed end of the electric actuator 97. The electric actuator 97 is located on the side close to the cylinder 95 and is located inside the cylinder 95. The moving end of the electric actuator 97 is fixedly connected to the auxiliary cylinder 99. When the handle body 1 is not connected to the tail plug 7, the electric actuator 97 is in the extended state.

[0037] When in use, the operator inserts the connecting post 93 into the interior of the tail plug 7 according to the index point 2 fixed on the outer surface of the handle body 1 and the tail plug 7, so that the convex ring 94 contacts the support plate 913, and then presses the button to retract the electric push rod 97.

[0038] The auxiliary cylinder 99 slides and adapts to the cylinder 95. The side of the connecting plate 96 closest to the auxiliary cylinder 99 is fixedly connected to one end of the return spring 98. The other end of the return spring 98 is fixedly connected to the auxiliary cylinder 99, and the return spring 98 is located between the two electric push rods 97. A groove 910 is formed on the outer surface of the middle part of the auxiliary cylinder 99. The inner wall of the groove 910 engages with the connecting block 911. One end of the connecting block 911 is fixedly connected to the engaging block 912. The engaging block 912 is rotatably connected to the inner wall of the cylinder 95, and the engaging block 912 is away from the auxiliary cylinder 95. A rectangular protrusion is fixedly connected to one side of the cylinder 99 for engaging with the plane of the protruding ring 94 to ensure a stable connection of the handle body 1. The inner wall of the cylinder 95 is fixedly connected to the support plate 913. The support plate 913 is located between the rectangular protrusion of the engaging block 912 and the auxiliary cylinder 99. A sealing ring 914 is fixedly connected to the inner wall of the tail plug 7, and the sealing ring 914 is located at the opening of the tail plug 7. The sealing ring 914 is made of medical silicone or fluororubber, which can withstand high temperature and high pressure sterilization (134℃) and chemical disinfection, and meets the IP67 protection level.

[0039] The retraction of the telescopic end of the electric actuator 97 causes the auxiliary cylinder 99 to move towards the connecting plate 96. The auxiliary cylinder 99 causes the groove 910 to move as well. When the groove 910 moves, it causes the connecting block 911 to deflect, which in turn causes the snap-fit ​​block 912, which is fixedly connected to the connecting block 911, to deflect. As a result, the rectangular protrusion of the snap-fit ​​block 912 is snapped onto the plane of the protruding ring 94 to ensure the stable connection of the handle. The sealing ring 914 forms a second waterproof seal to further ensure the sealing of the outer shell.

[0040] The electric actuator 97 is a Firgelli Automations FA-PO series. The electric actuator 97 is connected to the main board inside the main unit via tail wire 8. The main board is located inside the main unit of the dental flosser. The main unit of the dental flosser (also known as the control unit or base) is the core control module of the dental flosser, responsible for providing power, adjusting parameters and coordinating the work of various components. The control circuit of the electric actuator 97 is as follows: pressing the extension button causes the motor to rotate forward and the extension end of the electric actuator 97 to extend; pressing the retraction button causes the motor to rotate in reverse and the extension end of the electric actuator 97 to retract.

[0041] It should be noted that the calculation formula for the return spring 98 is: F=kx, where F is the external force on the spring, in N, k is the spring constant, in N / m, and x is the deformation of the spring, in m. This formula is used to calculate the elastic force of the alloy spring so that it can be used in this device.

[0042] The implementation principle of a dental instrument handle housing according to an embodiment of this application is as follows:

[0043] During use, the operator attaches the decorative ring 3 onto the handle body 1, and snaps the light guide post 6 into the inside of the cone head 4. The cone head 4 is then screwed onto one end of the handle body 1. Subsequently, based on the index point 2 fixed on the outer surface of the handle body 1 and the tail plug 7, the operator inserts the connecting post 93 into the inside of the tail plug 7, making the convex ring 94 contact the support plate 913. Then, by pressing the button, the electric push rod 97 retracts, and the auxiliary cylinder 99 moves together. When the groove 910 moves, it causes the connecting block 911 and the snap-fit ​​block 912 to deflect. Thus, the rectangular protrusion set on the snap-fit ​​block 912 snaps into the plane of the convex ring 94 to ensure the stable connection of the handle. The sealing ring 914 forms a second waterproof seal to further ensure the sealing of the outer shell. Then, the tail wire 8 is connected to the water and electrical circuits of the main unit.

[0044] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dental instrument handle housing, characterized in that: Includes the handle body (1) and the tail plug (7). The handle body (1) and the tail plug (7) are provided with an auxiliary disassembly mechanism to facilitate the disassembly of the handle shell; The auxiliary disassembly mechanism includes a sleeve (91) fixedly connected to the outer surface of the handle body (1), and a plurality of protrusions (92) are fixedly arranged in a circumferential array on the outer surface of the sleeve (91). One end of the handle body (1) is fixedly connected to a connecting post (93), and a protruding ring (94) is fixedly connected to the outer surface of the end of the connecting post (93) away from the handle body (1). A cylinder (95) is fixedly connected inside the tail plug (7), and a connecting plate (96) is fixedly connected to one end of the cylinder (95) near the inside of the tail plug (7). The connecting plate (96) is symmetrically fixed with electric push rods (97) on the side near the cylinder (95), and an auxiliary cylinder (99) that is slidably adapted to the cylinder (95) is fixedly connected to the end of the electric push rod (97) away from the connecting plate (96).

2. The dental instrument handle housing according to claim 1, characterized in that: A return spring (98) is fixedly connected between the connecting plate (96) and the auxiliary cylinder (99).

3. The dental instrument handle housing according to claim 2, characterized in that: The outer surface of the auxiliary cylinder (99) is provided with a groove (910), and a connecting block (911) is engaged inside the groove (910). One end of the connecting block (911) is fixedly connected to a snap-fit ​​block (912) that is rotatably connected to the inner wall of the cylinder (95).

4. The dental instrument handle housing according to claim 3, characterized in that: The cylinder (95) is fixedly connected to a support plate (913) located inside the snap block (912), and the inner wall of the tail plug (7) away from the tail wire (8) is fixedly connected to a sealing ring (914).

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