Motor rapid memory device

Abstract

The utility model relates to the technical field of dental comprehensive treatment chairs, in particular to a motor rapid memory device which comprises a base, two supporting plates are installed on the top of the base, a rotating frame is arranged between the two supporting plates, and connecting shafts are fixedly connected to the two sides of the rotating frame. According to the device, the telescopic motor pushes the chair support to rotate, the height and the position of the chair are adjusted, the chair support rotates to drive the rotating frame to rotate, when the rotating frame rotates, the telescopic motor drives the rotating frame to rotate, and when the rotating frame rotates, the telescopic motor drives the telescopic motor to rotate, so that the telescopic motor drives the telescopic motor to rotate, and the telescopic motor drives the telescopic motor to rotate. The first gear is driven by the connecting shaft to rotate, the second gear is driven by the first gear to rotate, the output end of the memory device is driven by the second gear to rotate, an original structure needing to pass through a plurality of movable gaps is improved to be only provided with two gear meshing gaps, transmission precision is greatly improved, and positioning precision errors caused by the movable gaps are reduced.

Description

Technical Field

[0001] This utility model relates to the field of dental chair technology, and more specifically, to a motor-driven rapid memory device. Background Technology

[0002] Dental chairs are mainly used for oral surgery and the examination and treatment of oral diseases. Most are electric dental chairs. They are essentially equipment and operating tables for dentists to perform examinations and treatments, providing great convenience for dentists' daily work and allowing patients to lie comfortably on them, relax their mind and body, and better cooperate with dentists to complete the treatment.

[0003] Existing technology for memory position of dental chairs records the number of rotations of the internal gears of the motor using pulse signals to determine the linear push-pull distance of the motor, thus determining the height of the chair frame and the angle of the backrest. However, due to backlash in mechanical transmission, there is play in the motor's rotation. The number of rotations of the internal gears does not match the actual movement distance of the chair's height and backrest. This is especially true after the chair has been rotated forward and reversed several times under load, resulting in a larger deviation between the pulse value and the actual height of the chair and the actual movement distance of the backrest. Consequently, there is an error when returning to the memory position. Therefore, a motor-based rapid memory device was designed. Utility Model Content

[0004] Based on the aforementioned technical problems regarding the play in the motor rotation due to gaps in mechanical transmission, the discrepancy between the number of rotations of the internal gears and the actual movement distance of the chair and backrest, especially after several forward and reverse rotations under load, the pulse value will deviate even more from the actual height of the chair and the actual movement distance of the backrest, resulting in an error when returning to the memory position. Therefore, this utility model proposes a motor quick memory device.

[0005] This utility model proposes a motor rapid memory device, including a base, two support plates mounted on the top of the base, a rotating frame between the two support plates, and connecting shafts fixedly connected to both sides of the rotating frame. The ends of the two connecting shafts pass through the corresponding support plates and are rotatably connected to them. A first gear is mounted on the outer end of one of the connecting shafts. A mounting frame is mounted on the outer wall of the support plate, and a memory device is fixedly connected to the outer wall of the mounting frame. A second gear is mounted on the output end of the memory device, and the second gear meshes with the first gear.

[0006] Preferably, a limiting groove is provided at the outer end of the connecting shaft, and a snap-fit ​​part is formed on the outer wall of the first gear, which engages with the inner wall of the limiting groove.

[0007] Preferably, the outer wall of the first gear has a connecting hole, the inner wall of the limiting groove has a threaded hole, a first bolt is inserted into the inner wall of the connecting hole, and the end of the first bolt is threadedly connected to the threaded hole.

[0008] Preferably, the outer wall of the mounting bracket has a second mounting hole, and a second bolt is inserted into the inner wall of the second mounting hole. The end of the second bolt is threadedly connected to the support plate.

[0009] Preferably, the outer wall of the mounting bracket has a first mounting hole, and the output end of the memory device passes through the first mounting hole and extends to its outer side.

[0010] Preferably, a connecting block is installed at the end of the second gear, and a docking hole is provided at the end of the connecting block, and the output end of the memory device is fixedly connected to the docking hole.

[0011] Preferably, a telescopic motor is rotatably connected to the top of the base, a chair support is rotatably connected to the movable end of the telescopic motor, the chair support is rotatably connected to the rotating frame, and a seat is installed on the top of the chair support.

[0012] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0013] 1. In this utility model, the telescopic motor drives the chair support to rotate, thereby adjusting the height and position of the seat. When the chair support rotates, it drives the rotating frame to rotate. When the rotating frame rotates, it drives the first gear to rotate through the connecting shaft. The first gear drives the second gear to rotate, and the second gear drives the output end of the memory device to rotate. This improves the original structure that required several movement gaps to only two gear meshing gaps, greatly improving the transmission accuracy and reducing the positioning accuracy error caused by movement gaps.

[0014] 2. In this utility model, the snap-fit ​​part and limiting groove design between the connecting shaft and the first gear, as well as the fixing method through the first bolt and threaded hole, ensure a stable connection between the first gear and the connecting shaft, while also providing convenience for disassembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 4 This is a schematic diagram of a partially disassembled structure of the present invention.

[0019] In the diagram: 1. Base; 2. Support plate; 3. Telescopic motor; 4. Chair support; 5. Seat; 6. Rotating frame; 7. Connecting shaft; 8. Limiting groove; 9. Threaded hole; 10. First gear; 11. Snap-fit ​​part; 12. Connecting hole; 13. First bolt; 14. Mounting bracket; 15. First mounting hole; 16. Second mounting hole; 17. Second bolt; 18. Memory device; 19. Connecting block; 20. Second gear; 21. Docking hole. Detailed Implementation

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model. In this utility model, unless otherwise expressly specified and limited, the term "fixed connection" should be interpreted broadly. For example, "fixed connection" can mean fixed installation, detachable connection, or integral; it can mean mechanical connection or electrical connection; it can mean direct connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figure 1 and Figure 3 As shown, a motor-driven rapid memory device includes a base 1, with two support plates 2 mounted on the top of the base 1. A rotating frame 6 is positioned between the two support plates 2, and connecting shafts 7 are fixedly connected to both sides of the rotating frame 6. The design of the rotating frame 6 and connecting shafts 7 between the two support plates 2 ensures that the rotating frame 6 can rotate smoothly between the support plates 2. The ends of the two connecting shafts 7 pass through the corresponding support plates 2 and are rotatably connected to them. A first gear 10 is mounted on the outer end of one of the connecting shafts 7. A mounting bracket 14 is mounted on the outer wall of the support plate 2, and a memory device 18 is fixedly connected to the outer wall of the mounting bracket 14. A second gear 20 is mounted on the output end of the memory device 18, meshing with the first gear 10. The rotatable connection between the connecting shaft 7 and the support plate 2, as well as the meshing of the first gear 10 and the second gear 20, enhance the overall stability and transmission efficiency of the structure. The memory device 18, connected to the second gear 20 through its output end, achieves a rapid memory function driven by the motor. This design not only improves work efficiency but also enhances the accuracy of the memory device through precise motor control.

[0022] like Figure 3 and Figure 4 As shown, a limiting groove 8 is provided at the outer end of the connecting shaft 7, and a snap-fit ​​part 11 is formed on the outer wall of the first gear 10, which engages with the inner wall of the limiting groove 8.

[0023] like Figure 4As shown, the outer wall of the first gear 10 has a connecting hole 12, and the inner wall of the limiting groove 8 has a threaded hole 9. A first bolt 13 is inserted into the inner wall of the connecting hole 12, and the end of the first bolt 13 is threadedly connected to the threaded hole 9. The design of the snap-fit ​​part 11 between the connecting shaft 7 and the first gear 10 and the limiting groove 8, as well as the fixing method through the first bolt 13 and the threaded hole 9, ensures a stable connection between the first gear 10 and the connecting shaft 7, and also provides convenience for disassembly.

[0024] like Figure 4 As shown, the outer wall of the mounting bracket 14 has a second mounting hole 16, and a second bolt 17 is inserted into the inner wall of the second mounting hole 16. The end of the second bolt 17 is threaded to the support plate 2. The design of the second mounting hole 16 and the second bolt 17 on the mounting bracket 14 makes it easy to install the memory device 18 onto the support plate 2, and also facilitates later maintenance and replacement.

[0025] like Figure 4 As shown, the outer wall of the mounting bracket 14 has a first mounting hole 15, and the output end of the memory device 18 passes through the first mounting hole 15 and extends to its outer side.

[0026] like Figure 4 As shown, a connecting block 19 is installed at the end of the second gear 20, and a docking hole 21 is opened at the end of the connecting block 19. The output end of the memory device 18 is fixedly connected to the docking hole 21.

[0027] like Figure 1 and Figure 2 As shown, a telescopic motor 3 is rotatably connected to the top of the base 1, and a chair support 4 is rotatably connected to the movable end of the telescopic motor 3. The chair support 4 is rotatably connected to the rotating frame 6, and a seat 5 is installed on the top of the chair support 4.

[0028] Working principle: The telescopic motor 3 drives the chair support 4 to rotate, adjusting the height and position of the seat 5. When the chair support 4 rotates, it drives the rotating frame 6 to rotate. When the rotating frame 6 rotates, it drives the first gear 10 to rotate through the connecting shaft 7. The first gear 10 drives the second gear 20 to rotate. The second gear 20 drives the output end of the memory device 18 to rotate. The original structure that required several movement gaps has been improved to only two gear meshing gaps, which greatly improves the transmission accuracy and reduces the positioning accuracy error caused by movement gaps.

[0029] It should be noted that 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 motor rapid memory device, comprising a base (1), characterized in that: The base (1) has two support plates (2) installed on its top. A rotating frame (6) is provided between the two support plates (2). A connecting shaft (7) is fixedly connected to both sides of the rotating frame (6). The ends of the two connecting shafts (7) pass through the corresponding support plates (2) and are rotatably connected to them. A first gear (10) is installed on the outer end of one of the connecting shafts (7). A mounting frame (14) is installed on the outer wall of the support plate (2). A memory device (18) is fixedly connected to the outer wall of the mounting frame (14). A second gear (20) is installed at the output end of the memory device (18). The second gear (20) meshes with the first gear (10).

2. The motor rapid memory device according to claim 1, characterized in that: The connecting shaft (7) has a limiting groove (8) at its outer end, and the outer wall of the first gear (10) has a snap-fit ​​part (11) that snaps into the inner wall of the limiting groove (8).

3. The motor rapid memory device according to claim 2, characterized in that: The outer wall of the first gear (10) is provided with a connecting hole (12), the inner wall of the limiting groove (8) is provided with a threaded hole (9), a first bolt (13) is inserted into the inner wall of the connecting hole (12), and the end of the first bolt (13) is threadedly connected to the threaded hole (9).

4. The motor rapid memory device according to claim 3, characterized in that: The mounting bracket (14) has a second mounting hole (16) on its outer wall. A second bolt (17) is inserted into the inner wall of the second mounting hole (16). The end of the second bolt (17) is threadedly connected to the support plate (2).

5. The motor rapid memory device according to claim 4, characterized in that: The outer wall of the mounting bracket (14) is provided with a first mounting hole (15), and the output end of the memory device (18) passes through the first mounting hole (15) and extends to its outer side.

6. The motor rapid memory device according to claim 5, characterized in that: The second gear (20) is equipped with a connecting block (19) at its end. The connecting block (19) has a docking hole (21) at its end. The output end of the memory device (18) is fixedly connected to the docking hole (21).

7. The motor rapid memory device according to claim 6, characterized in that: The top of the base (1) is rotatably connected to a telescopic motor (3), the movable end of the telescopic motor (3) is rotatably connected to a chair support (4), the chair support (4) is rotatably connected to a rotating frame (6), and a seat (5) is installed on the top of the chair support (4).

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