Dental bending machine transmission shaft

Abstract

The utility model discloses a dental bending machine transmission shaft, which relates to the technical field of oral medical instruments and comprises an upper shell and a lower shell, a pair of sliding chutes are arranged in the lower shell, sliding blocks matched with the sliding chutes in size are connected in the sliding chutes in a sliding manner, the bottoms of the pair of sliding blocks are fixedly connected with limiting blocks, the pair of limiting blocks are of a symmetrical structure, and the limiting blocks are arranged in the sliding chutes. The limiting block is of a 7-shaped structure, and a limiting groove matched with the limiting block in size is formed in the bottom of the sliding groove. When the upper shell and the lower shell need to be installed, after the sliding block is aligned with the sliding groove, the upper shell is moved downwards, the upper shell is rotated after the sliding block reaches the bottom of the sliding groove, the sliding block is synchronously driven to move to the designated position, the upper shell continues to be moved downwards, and the limiting block reaches the interior of the limiting groove; therefore, the upper shell and the lower shell can be connected, mounting and dismounting of the upper shell and the lower shell are facilitated, and the situation that the firmness of connection is affected after long-time use is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of oral medical instruments, in particular to a transmission shaft of a dental contra-angle machine. Background Art

[0002] Dentures are the hardest organs in the human body. In addition to carrying out functions such as cutting and chewing, they also play a role in maintaining facial appearance and assisting pronunciation. Teeth can be divided into four types: incisors, canines, premolars and molars. Each tooth consists of a crown exposed outside the alveolar bone, a root growing inside the alveolar bone, and a neck between the crown and the root. Now that people's living standards are getting higher and higher, people are beginning to pay attention to the health of their teeth. In the process of treating teeth, dental contra-angle machines are usually used.

[0003] A dental contra-angle machine is a dental device commonly used in the production of braces and other dental devices. It bends metal wire into various shapes to accommodate different oral morphologies and correction needs. Typically driven by an electric motor and equipped with bending dies of various shapes and sizes, it is easy to operate. Using a dental contra-angle machine can improve the production efficiency and quality of dental devices.

[0004] Currently, when using a dental contra-angle machine for tooth treatment, it is usually assembled before use. The dental contra-angle machine is generally divided into three main bodies, such as the drill bit, the upper body and the lower body. The drill bit and the upper body are fixed by clamping, and the upper body and the lower body are connected by a threaded connection. Usually, the dental contra-angle machine is disassembled, disinfected and maintained after use to avoid cross infection and extend its service life.

[0005] However, when the dental contra-angle machine is disinfected and maintained, it is usually necessary to disassemble it and then use steam high temperature to disinfect it, which will cause the threaded connection to be affected by thermal expansion and contraction, resulting in the loss of thread strength. Utility Model Content

[0006] Based on this, the purpose of the present invention is to provide a dental contra-angle machine transmission shaft to solve the technical problem that when the dental contra-angle machine is disinfected and maintained, it is usually necessary to disassemble it and then use steam high temperature to sterilize it, which will cause the threaded connection to be affected by thermal expansion and contraction, resulting in the firmness of the thread.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dental contra-angle machine transmission shaft, comprising an upper shell and a lower shell, a pair of slide grooves are provided in the lower shell, and a slider matching the size of the slide groove is slidably connected in the slide groove, the bottoms of the pair of sliders are fixedly connected to a limiting block, the pair of limiting blocks are symmetrical structures, and the limiting blocks are a "7"-shaped structure, a limiting groove matching the size of the limiting block is provided at the bottom of the slide groove, and a first rubber pad is provided on both sides of the limiting groove.

[0008] By adopting the above technical solution, when installing the upper shell and the lower shell, the upper shell can be moved downward after the slider is aligned with the slide groove, so that the slider reaches the bottom of the slide groove and then the upper shell is rotated. After the slider is synchronously driven to move to the specified position, the upper shell is continued to be moved downward so that the limit block reaches the inside of the limit groove. The connection between the upper shell and the lower shell can be completed, which is conducive to their installation and disassembly, and avoids affecting the firmness of the connection after long-term use.

[0009] The utility model is further configured as follows: a bearing is provided on the outer surface of the upper shell, an elastic block is provided in the bearing, a nut is threadedly connected to the outer surface of the elastic block, a second slot is provided on the outer surface of the upper shell, and one end of the nut rotates in the second slot, one end of the elastic block is movably connected to a grinding head, and the other end of the elastic block is fixedly connected to a limiting plate.

[0010] By adopting the above technical solution, an elastic block is provided inside the bearing, so that the elastic block can be rotated on the shell, and the elastic block can slide back and forth inside the bearing by screwing the nut. When the grinding head needs to be removed, the elastic block can be moved outward so that one end thereof is opened, and the grinding head can be replaced at this time. When the grinding head needs to be fixed, the elastic block can be moved inward, and the rotating shaft will squeeze one end of the elastic block, so that the elastic block fixes the grinding head, which is convenient for quick installation and disassembly of the grinding head.

[0011] The utility model is further configured such that one end of the elastic block is fixedly connected to a clamping block, and the clamping block is movably connected to a grinding head, and a second rubber pad is provided between the clamping block and the grinding head.

[0012] By adopting the above technical solution, the position of the clamping block can be changed by the degree of extrusion of one end of the elastic block, which facilitates better installation and disassembly of the grinding head. By providing a second rubber pad between the clamping block and the grinding head, the friction force at the connection can be increased, which facilitates better fixing of the position of the grinding head.

[0013] The present invention is further configured such that a first card block is fixedly connected to the bottom of the upper shell, a first card slot is provided on the top of the lower shell, and the first card slot matches the size of the first card block.

[0014] By adopting the above technical solution, by providing a first clamping block and a first clamping groove at the connection between the upper shell and the lower shell, it is beneficial to increase the sealing performance of the connection between the upper shell and the lower shell, and facilitate better use of the dental contra-angle machine.

[0015] The present invention is further configured such that a connecting head is fixedly connected to the bottom of the lower shell, and the connecting head is a stepped structure.

[0016] By adopting the above technical solution, a connector is fixedly connected to the bottom of the lower shell, and the connector has a stepped structure, so that the connector can be connected to pipes of different sizes. This is beneficial for supplying water to the device through an external pipe when the grinding head is in use, and can clean substances adsorbed on the device during grinding to avoid affecting the use of the device.

[0017] The present invention is further configured such that outer surfaces of the upper shell and the lower shell are both provided with anti-slip pads.

[0018] By adopting the above technical solution, the friction between the hand and the device is increased through the anti-slip pad, thereby preventing liquid from being stained on the medical gloves during use, which affects the grip of the device.

[0019] In summary, the present invention has the following beneficial effects:

[0020] The utility model is characterized in that a pair of slide grooves are provided on the inner wall of the lower shell body, and a slider is slidably connected in the slide groove, and the slider is fixedly connected to the bottom of the upper shell body. At the same time, a "7"-shaped limit block is fixedly connected to the bottom of the slider, and the limit blocks at the bottom of the pair of sliders are symmetrical structures. A limit groove that matches the size of the limit block is provided on the slide groove. When it is necessary to install the upper shell body and the lower shell body, the slider can be aligned with the slide groove and the upper shell body is moved downward. After the slider reaches the bottom of the slide groove, the upper shell body is rotated, and the slider is synchronously driven to move the specified position, and the upper shell body is continued to move downward so that the limit block reaches the inside of the limit groove, and the connection between the upper shell body and the lower shell body is completed. It is convenient for installation and disassembly, and avoids affecting the firmness of the connection after long-term use. Moreover, because a first rubber pad is provided in the limit groove, it is convenient to increase the friction between the limit block and the limit groove, and the limit block can be prevented from moving when there is no external force or the external force is small, which is convenient for better connection of the upper shell body and the lower shell body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 For this utility model Figure 1 Schematic diagram of the three-dimensional structure from another perspective;

[0023] Figure 3 It is a sectional view of the three-dimensional structure of the utility model;

[0024] Figure 4 This is a detailed diagram of the three-dimensional structure connection of the utility model.

[0025] In the figure: 1. Upper shell; 2. Lower shell; 3. Connector; 4. First slot; 5. First block; 6. Slide; 7. Slider; 8. Limiting slot; 9. Limiting block; 10. First rubber pad; 11. Bearing; 12. Elastic block; 13. Limiting plate; 14. Clamping block; 15. Grinding head; 16. Second slot; 17. Nut; 18. Second rubber pad. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] The following describes an embodiment of the present invention based on its overall structure.

[0028] Dental contra-angle machine drive shaft, such as Figure 1-4 As shown, it includes an upper shell 1 and a lower shell 2. Anti-slip pads are provided on the outer surfaces of the upper shell 1 and the lower shell 2, which are beneficial for increasing the friction between the hand and the dental contra-angle machine through the anti-slip pads, and are beneficial for better holding the dental contra-angle machine during use.

[0029] At the same time, a pair of slide grooves 6 are provided in the lower shell body 2, and a slider 7 that matches the size of the slide groove 6 is slidably connected in the slide groove 6, so that the slider 7 slides in the slide groove 6, and the bottom of the pair of sliders 7 are fixedly connected to the limit block 9. The pair of limit blocks 9 are symmetrical structures, and the limit block 9 is a "7"-shaped structure. A limit groove 8 that matches the size of the limit block 9 is provided at the bottom of the slide groove 6, so that when the upper shell body 1 is slid, the limit block 9 can be rotated synchronously in the lower shell body 2 to better match the limit groove 8. Therefore, the "7"-shaped structure of the limit block 9 can be used to complete the installation of the upper shell 1 and the lower shell 2, avoiding deformation of the connection caused by long-term use, which affects the use of the device. In addition, first rubber pads 10 are provided on both sides of the limit groove 8, which is beneficial to increase the friction between the limit groove 8 and the limit block 9 through the first rubber pad 10, so that after the limit block 9 enters the limit groove 8, in the absence of external force or small external force, the limit block 9 cannot move, which is beneficial to increase the connectivity between the upper shell 1 and the lower shell 2.

[0030] Then, a bearing 11 is provided on the outer surface of the upper shell 1, and an elastic block 12 is provided in the bearing 11. When the elastic block 12 is not squeezed by external force, it is in an open state. When squeezed by external force, one end of the elastic block 12 can be closed inward, so the object can be clamped and fixed. A nut 17 is threadedly connected to the outer surface of the elastic block 12, which can be driven to move by the forward and reverse rotation of the nut 17. A second slot 16 is provided on the outer surface of the upper shell 1, and one end of the nut 17 rotates in the second slot 16, which is beneficial to prevent the nut 17 from falling from the upper shell 1 through the second slot 16, so as to better drive the elastic block 12 to move. A grinding head 15 is movably connected to one end of the elastic block 12, and the other end of the elastic block 12 is fixedly connected to the limiting plate 13, and the movement of the elastic block 12 can be limited by the limiting plate 13.

[0031] A clamping block 14 is fixedly connected to one end of the elastic block 12, and the clamping block 14 is movably connected to the grinding head 15. When the elastic block 12 moves inward and its outer side is squeezed by the bearing 11, the elastic block 12 synchronously drives the clamping block 14 to move, so the position of the grinding head 15 can be fixed. When the elastic block 12 moves outward, the bearing 11 cannot squeeze its outer surface, and the clamping block 14 moves outward synchronously. At this time, the grinding head 15 can be replaced, which is conducive to better use of the dental contra-angle machine. A second rubber pad 18 is provided between the clamping block 14 and the grinding head 15. The second rubber pad 18 can increase the friction between the two, so as to better fix the position of the grinding head 15.

[0032] Furthermore, a first card block 5 is fixedly connected to the bottom of the upper shell 1, and a first card slot 4 is provided on the top of the lower shell 2, and the first card slot 4 is matched with the size of the first card block 5, which is beneficial to increase the tightness of the device through the first card slot 4 and the first card block 5, and avoid external objects from affecting the internal use. At the same time, a connector 3 is fixedly connected to the bottom of the lower shell 2, and the connector 3 is a stepped structure, which is beneficial to connecting pipes of different sizes through the connector 3, so that liquid can be transported into the interior of the device, which is beneficial to synchronously spraying liquid through the edge of the grinding head 15 during use, and avoiding substances generated during grinding from entering the interior of the device and affecting use.

[0033] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A dental contra-angle machine transmission shaft, comprising an upper housing (1) and a lower housing (2), characterized in that: A pair of slide grooves (6) are provided in the lower shell (2), and a slider (7) matching the size of the slide groove (6) is slidably connected in the slide groove (6), and the bottoms of the pair of sliders (7) are fixedly connected to a limiting block (9), and the pair of limiting blocks (9) are symmetrical structures, and the limiting blocks (9) are "7"-shaped structures. A limiting groove (8) matching the size of the limiting block (9) is provided at the bottom of the slide groove (6), and first rubber pads (10) are provided on both sides of the limiting groove (8).

2. The dental contra-angle transmission shaft according to claim 1, characterized in that: The outer surface of the upper shell (1) is provided with a bearing (11), an elastic block (12) is provided in the bearing (11), the outer surface of the elastic block (12) is threadedly connected to a nut (17), the outer surface of the upper shell (1) is provided with a second slot (16), and one end of the nut (17) rotates in the second slot (16), one end of the elastic block (12) is movably connected to a grinding head (15), and the other end of the elastic block (12) is fixedly connected to a limiting plate (13).

3. The dental contra-angle transmission shaft according to claim 2, characterized in that: One end of the elastic block (12) is fixedly connected to a clamping block (14), and the clamping block (14) is movably connected to a grinding head (15). A second rubber pad (18) is provided between the clamping block (14) and the grinding head (15).

4. The dental contra-angle transmission shaft according to claim 1, characterized in that: The bottom of the upper shell (1) is fixedly connected with a first card block (5), and the top of the lower shell (2) is provided with a first card slot (4), and the first card slot (4) and the first card block (5) are of the same size.

5. The dental contra-angle transmission shaft according to claim 1, characterized in that: A connecting head (3) is fixedly connected to the bottom of the lower shell (2), and the connecting head (3) is a stepped structure.

6. The dental contra-angle transmission shaft according to claim 1, characterized in that: The outer surfaces of the upper shell (1) and the lower shell (2) are both provided with anti-slip pads.

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