Auxiliary device for dental operating table

Abstract

The invention provides an auxiliary device for a dental operating table, and belongs to the technical field of dental operation assistance. The auxiliary device for the dental operating table comprises a stand column, the top of the stand column is provided with a back plate and a seat plate, the top of the back plate is provided with a head support, the front side of the back plate is provided with a support adjusting mechanism, the support adjusting mechanism comprises a sliding plate, a first gear and a rotating disc, the top of the back plate is sleeved with the sliding plate in a sliding mode, and the rotating disc is arranged on the sliding plate. And a transmission frame is fixedly mounted at the bottom of the sliding plate. By arranging the bracket adjusting mechanism, the back plate begins to incline, and the relative position of the head of the patient on the back plate is changed, so that the head bracket can automatically adapt to the change of the position of the head of the patient, and discomfort of the patient during use caused by the change of the position of the head of the patient and the relative position of the head bracket is avoided; compared with the prior art, workers do not need to manually adjust the position of the head support, and the automation degree is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of dental surgery assistance, in particular to an auxiliary device for a dental operating table. Background Art

[0002] Dental surgery is a series of surgical operations in the field of stomatology used to diagnose, treat and prevent oral diseases, as well as improve oral function and aesthetics. During dental surgery, the patient is usually required to lie on a dental operating table, on which a head rest is often used to assist the procedure.

[0003] In the prior art, a head support supports the patient's head so that the patient can relax physically and mentally during dental surgery, and the operator can perform the surgery more accurately. However, the operating table is usually divided into a back plate and a seat plate. The back plate has an adjustable angle, which often needs to be adjusted during dental surgery. This causes the relative position of the patient's head and the head support to change and no longer match, which is not conducive to the performance of the dental surgery. Summary of the invention

[0004] In order to make up for the above deficiencies, the present invention provides an auxiliary device for a dental operating table that overcomes the above technical problems or at least partially solves the above problems.

[0005] The present invention is achieved in that: The present invention provides an auxiliary device for a dental operating table, comprising a column, a back plate and a seat plate are arranged on the top of the column, a head support is arranged on the top of the back plate, and a support adjustment mechanism is arranged on the front side of the back plate. The support adjustment mechanism comprises: A slide plate, wherein the slide plate is slidably sleeved on the top of the back plate, a transmission frame is fixedly mounted on the bottom of the slide plate, and a transmission groove is provided on the transmission frame that passes through the front and back sides; A first gear, the first gear is rotatably mounted on the front side of the back plate, a connecting rod is fixedly mounted on the front side of the first gear, a spline sleeve is fixedly mounted on the front side of the connecting rod, and an internal sliding sleeve of the spline sleeve is provided with a spline shaft; The turntable is fixedly mounted on the front side of the spline shaft, a transmission shaft is arranged inside the turntable, and the transmission shaft is slidably sleeved inside the transmission groove.

[0006] In a preferred solution, the front side of the back plate is rotatably mounted with a second gear and a third gear, the second gear is meshingly connected with the first gear, the interiors of the second gear and the third gear are fixedly sleeved with a transmission rod, the surfaces of the two transmission rods are fixedly sleeved with a rotating wheel, and a transmission belt is provided between the two transmission rods via the rotating wheel sleeve.

[0007] In a preferred solution, a gear ring is fixedly installed on the front side of the seat plate, the gear ring and the hinge between the back plate and the seat plate are coaxially arranged, the third gear and the gear ring are meshingly connected, a first connecting plate is installed at the bottom of the back plate, a second connecting plate is installed on the left side of the column, and a hydraulic rod is installed between the first connecting plate and the second connecting plate.

[0008] In a preferred embodiment, a stroke control mechanism is provided on the back plate, and the stroke control mechanism includes a stroke control plate, and the stroke control plate is slidably sleeved on the top of the slide plate, and a first tooth plate is fixedly installed on the bottom of the stroke control plate, and a fourth gear is rotatably installed inside the slide plate, the first tooth plate and the fourth gear are meshingly connected, and a first screw is fixedly sleeved inside the fourth gear.

[0009] In a preferred embodiment, a sliding groove is provided at the bottom of the slide plate, a sliding block is provided inside the sliding groove, the sliding block is threadedly sleeved on the surface of the first screw rod, a connecting plate is fixedly installed at the bottom of the sliding block, a roller is rotatably installed at the bottom of the connecting plate, an annular groove is provided on the surface of the turntable, and the roller is sleeved inside the annular groove.

[0010] In a preferred embodiment, the turntable is provided with a travel groove which passes through the front and rear, a travel plate is fixedly installed inside the travel groove, a travel block is slidably sleeved on the surface of the travel plate, the front side of the travel block is fixedly connected to the rear side of the transmission shaft, a plurality of positioning grooves are provided on the top of the slide plate, and a pin rod is sleeved between the positioning groove and the travel control plate.

[0011] In a preferred embodiment, a first connecting block is fixedly installed on the top of the spline sleeve, and a second connecting block is fixedly installed on the rear side of the travel block. A rotating rod is arranged between the first connecting block and the second connecting block, and one end of the rotating rod is rotatably sleeved inside the first connecting block, and the other end of the rotating rod is rotatably sleeved inside the second connecting block.

[0012] In a preferred embodiment, a head clamping mechanism is provided on the top of the stroke control plate, and the head clamping mechanism includes a accommodating plate, and the accommodating plate is fixedly installed on the top of the stroke control plate, and a second screw rod is fixedly installed on the bottom of the head support, and a accommodating groove is opened on the top of the accommodating plate, and the second screw rod is slidably sleeved inside the accommodating groove.

[0013] In a preferred solution, a first spring is fixedly installed at the bottom of the inner wall of the accommodating groove, and the other end of the first spring is fixedly connected to the bottom of the head support. A fifth gear is rotatably installed inside the accommodating plate, and the second screw rod is threadedly sleeved inside the fifth gear. Two second tooth plates are slidably installed inside the accommodating plate, and both of the second tooth plates are meshedly connected to the fifth gear.

[0014] In a preferred solution, two limit grooves are provided on the top of the accommodating plate, and the internal sliding sleeves of the limit grooves are provided with limit rods. The bottom of the limit rod is fixedly connected to the top of the second tooth plate, and a supporting plate is fixedly installed on the top of the limit rod. The internal sliding sleeve of the supporting plate is provided with a clamping rod, and a clamping plate is fixedly installed on the side of the clamping rod close to the head support, and a second spring is installed between the clamping plate and the supporting plate.

[0015] The invention provides an auxiliary device for a dental operating table, which has the following beneficial effects: 1. By setting up a support adjustment mechanism, as the backboard begins to tilt, the relative position of the patient's head on the backboard changes, so that the head support can automatically adapt to the change in the patient's head position, avoiding changes in the relative position of the patient's head and the head support, causing discomfort to the patient when using it. Compared with the existing technology, there is no need for staff to manually adjust the position of the head support, and the degree of automation is higher.

[0016] 2. By setting up a stroke control mechanism, when the distance between the stroke block and the center of the turntable increases, the transmission frame drives the slide plate and the stroke control plate to move a larger distance, so that when a taller person adjusts the backboard angle, the head support moves a larger distance, so that the distance the head support moves when the backboard angle is adjusted can be automatically changed according to the height of different patients, thereby increasing the comfort of the patient when using it.

[0017] 3. By setting up a head clamping mechanism, when the patient's head is located directly above the head support and lies down, the head support is squeezed, driving the clamping plate and the patient's head to contact, thereby limiting the patient's head and facilitating the operator to perform dental surgery. Due to the setting of the second spring, the clamping plate has a certain moving stroke, thereby flexibly clamping the patient to avoid causing discomfort to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of a top view of the structure is provided for an embodiment of the present invention; Figure 3A schematic structural diagram of a first receiving plate and a second receiving plate is provided for an embodiment of the present invention; Figure 4 A structural schematic diagram of a support adjustment mechanism is provided for an embodiment of the present invention; Figure 5 A partial cross-sectional view of a receiving plate is provided for an embodiment of the present invention; Figure 6 An exploded view of a travel board and a slide board is provided for an embodiment of the present invention; Figure 7 A partial cross-sectional view of a travel plate and a slide plate is provided for an embodiment of the present invention; Figure 8 A structural schematic diagram of a travel groove and a travel block is provided for an embodiment of the present invention.

[0020] In the figure: 1, column; 2, back plate; 3, seat plate; 4, head support; 501, slide plate; 502, transmission frame; 503, transmission groove; 504, first gear; 505, connecting rod; 506, spline sleeve; 507, spline shaft; 508, turntable; 509, transmission shaft; 510, second gear; 511, third gear; 512, transmission rod; 513, transmission belt; 514, gear ring; 515, first receiving plate; 516, second receiving plate; 517, hydraulic rod; 601, travel control plate; 602, first tooth plate; 603, fourth gear; 604, first screw rod; 605, second gear; 606, third gear; 607, third gear; 608, first screw rod; 609, second gear; 610, second gear; 611, third gear; 612, third gear; 613, third gear; 614, third gear; 615, first receiving plate; 616, second receiving plate; 617, hydraulic rod; 618, first gear; 619, first gear; 620, first gear; 621, first gear; 622, first gear; 623, first gear; 624, first gear; 625, first gear; 626, first gear; 627, first gear; 628, first gear; 629, first gear; 630, first gear; 631, first gear; 632, first gear; 633, first gear; 634, first gear; 635, first gear; 636, first gear; 637, first gear; 638, first gear; 639, first gear; 640, first gear; 641, first gear; 642, first gear; 6 05, slide groove; 606, slider; 607, connecting plate; 608, roller; 609, annular groove; 610, travel groove; 611, travel plate; 612, travel block; 613, positioning groove; 614, pin rod; 615, first connecting block; 616, second connecting block; 617, rotating rod; 701, accommodating plate; 702, second screw rod; 703, accommodating groove; 704, first spring; 705, fifth gear; 706, second tooth plate; 707, limiting groove; 708, limiting rod; 709, bearing plate; 710, clamping rod; 711, clamping plate; 712, second spring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the 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] Reference Figure 1-8The present invention provides a technical solution: an auxiliary device for a dental operating table, comprising a column 1, a back plate 2 and a seat plate 3 are arranged on the top of the column 1, the back plate 2 is initially in a horizontal state, a head support 4 is arranged on the top of the back plate 2, a support adjustment mechanism is arranged on the front side of the back plate 2, the support adjustment mechanism comprises a slide plate 501, a first gear 504 and a turntable 508, the slide plate 501 is slidably sleeved on the top of the back plate 2, a first limiting rod is installed on the slide plate 501, a first limiting groove is opened on the back plate 2, and the first limiting rod is slidably sleeved on the first limiting groove. The interior is used to limit the slide plate 501. A transmission frame 502 is fixedly installed at the bottom of the slide plate 501. A transmission groove 503 that runs through the front and back is opened on the transmission frame 502. The first gear 504 is rotatably installed on the front side of the back plate 2. A connecting rod 505 is fixedly installed on the front side of the first gear 504. A spline sleeve 506 is fixedly installed on the front side of the connecting rod 505. The internal sliding sleeve of the spline sleeve 506 is provided with a spline shaft 507. A turntable 508 is fixedly installed on the front side of the spline shaft 507. A transmission shaft 509 is arranged inside the turntable 508. The transmission shaft 50 The sliding sleeve is arranged inside the transmission groove 503. By setting the support adjustment mechanism, the patient lies on the back plate 2 and the seat plate 3, and places the head on the head support 4. At this time, the inclination angle of the back plate 2 begins to be adjusted. When the inclination angle of the back plate 2 changes, the first gear 504 begins to rotate, driving the connecting rod 505 and the spline sleeve 506 to rotate. Through the mutual meshing between the meshing teeth of the spline sleeve 506 and the meshing teeth of the spline shaft 507, the spline shaft 507 drives the turntable 508 to rotate counterclockwise at the same time, driving the transmission shaft 509 to rotate the transmission groove. The inner wall of 503 is squeezed, so that the transmission frame 502 drives the slide plate 501 to move leftward, thereby causing the slide plate 501 to drive the head support 4 to move leftward. At the same time, since the back plate 2 begins to tilt, the relative position of the patient's head on the back plate 2 changes, so that the head support 4 can automatically adapt to the change of the patient's head position, avoiding the change of the relative position of the patient's head and the head support 4, causing discomfort to the patient during use. Compared with the prior art, there is no need for the staff to manually adjust the position of the head support 4, and the degree of automation is higher. Reference Figure 1-8, the front side of the back plate 2 is rotatably installed with a second gear 510 and a third gear 511, the second gear 510 and the first gear 504 are meshed and connected, the second gear 510 and the third gear 511 are both fixedly sleeved with a transmission rod 512, the surfaces of the two transmission rods 512 are both fixedly sleeved with a rotating wheel, and a transmission belt 513 is provided between the two transmission rods 512 through the rotating wheel sleeve. By setting the second gear 510 and the third gear 511, when the third gear 511 starts to rotate, the transmission rod 512 on the right side is driven to rotate, and the cooperation of the rotating wheel and the transmission belt 513 makes the transmission rod 512 on the left side rotate at the same time. Since the transmission rod 512 on the left side is fixedly sleeved inside the second gear 510, the second gear 510 is driven to rotate, and the meshing connection between the second gear 510 and the first gear 504 makes the first gear 504 rotate, thereby providing driving force for the first gear 504; Reference Figure 1-8 A gear ring 514 is fixedly installed on the front side of the seat plate 3, and the gear ring 514 and the hinge of the back plate 2 and the seat plate 3 are coaxially arranged, that is, the center of the circle of the hinge of the back plate 2 and the seat plate 3 coincides with the center of the gear ring 514, the third gear 511 and the gear ring 514 are meshed and connected, a first receiving plate 515 is installed at the bottom of the back plate 2, a second receiving plate 516 is installed on the left side of the column 1, and a hydraulic rod 517 is installed between the first receiving plate 515 and the second receiving plate 516, and both ends of the hydraulic rod 517 are hinged to the first receiving plate 515 and the second receiving plate 516. By setting the gear ring 514, when the user starts the hydraulic rod 517, the back plate 2 is driven to hinge between the back plate 2 and the seat plate 3 The third gear 511 is arranged on the back plate 2, so that the third gear 511 revolves around the hinge of the back plate 2 and the seat plate 3. Since the center of the ring gear 514 coincides with the center of the hinge of the back plate 2 and the seat plate 3, and the ring gear 514 and the third gear 511 are meshed, the third gear 511 rotates while revolving, so that the third gear 511 does not need to provide additional driving force, and can start running at the same time when the angle of the back plate 2 is adjusted. It can be applied to the initial adjustment of the angle of the back plate 2 and the adjustment of the angle of the back plate 2 during dental surgery, which greatly improves the degree of automation. Reference Figure 1-8A stroke control mechanism is provided on the back plate 2, and the stroke control mechanism includes a stroke control plate 601, and the stroke control plate 601 is slidably sleeved on the top of the slide plate 501, and a second limiting rod is installed on the stroke control plate 601. A second limiting groove is provided on the slide plate 501, and the second limiting rod is slidably sleeved inside the second limiting groove for limiting the stroke control plate 601. A first tooth plate 602 is fixedly installed on the bottom of the stroke control plate 601, and a fourth gear 603 is rotatably installed inside the slide plate 501. The first tooth plate 602 and the fourth gear 603 are meshed and connected, and a first screw rod 604 is fixedly sleeved inside the fourth gear 603. A stroke groove 610 that runs through the front and back is provided on the turntable 508, and a stroke plate is fixedly installed inside the stroke groove 610 611, a travel block 612 is slidably sleeved on the surface of the travel plate 611, the front side of the travel block 612 is fixedly connected to the rear side of the transmission shaft 509, a plurality of positioning grooves 613 are provided on the top of the slide plate 501, a pin 614 is sleeved between the positioning groove 613 and the travel control plate 601, and in the initial state, the pin 614 is located between the rightmost positioning groove 613 and the travel control plate 601, a first connecting block 615 is fixedly installed on the top of the spline sleeve 506, a second connecting block 616 is fixedly installed on the rear side of the travel block 612, a rotating rod 617 is provided between the first connecting block 615 and the second connecting block 616, one end of the rotating rod 617 is rotatably sleeved inside the first connecting block 615, and the other end of the rotating rod 617 is rotatably sleeved on the second connecting block 61 6, by setting a stroke control mechanism, when the patient initially lies on the back plate 2 and the seat plate 3, due to the differences between individuals and the limited length of the seat plate 3, people of different heights need different positions of the head support 4. At this time, the pin rod 614 is pulled out, and the stroke control plate 601 is moved to the left so that the head support 4 is located directly below the patient's head. The pin rod 614 is inserted into the stroke control plate 601 and the corresponding positioning groove 613. During the sliding process of the stroke control plate 601, the rotating disk 508 moves toward the direction close to the spline sleeve 506. Since the two ends of the rotating rod 617 are respectively rotatably mounted inside the first connecting block 615 and the second connecting block 616, the first connecting block 615 remains stationary on the spline sleeve 506, so that The rotating rod 617 squeezes the second connecting block 616, and the travel block 612 slides inside the travel groove 610 under the limiting effect of the travel plate 611, so that the distance between the travel block 612 and the center of the circle of the rotating disk 508 increases. In the initial state, the travel block 612 is close to the center of the circle of the rotating disk 508. When the rotating disk 508 drives the transmission shaft 509 to rotate, the diameter of the circular trajectory is small, so that the transmission frame 502 drives the slide plate 501 and the travel control plate 601 to move a small distance. When the distance between the travel block 612 and the center of the circle of the rotating disk 508 increases, the transmission frame 502 drives the slide plate 501 and the travel control plate 601 to move a large distance, so that when a tall person adjusts the angle of the backboard 2,The head support 4 has a greater movement, so that the distance the head support 4 moves when the back plate 2 is adjusted in angle can be automatically changed according to the height of different patients, thereby increasing the comfort of the patient when using the head support 4; Reference Figure 1-8 A slide groove 605 is provided at the bottom of the slide plate 501, and a slider 606 is provided inside the slide groove 605 for sliding. The slider 606 is threadedly sleeved on the surface of the first screw rod 604. A connecting plate 607 is fixedly installed at the bottom of the slider 606. A roller 608 is rotatably installed at the bottom of the connecting plate 607. An annular groove 609 is provided on the surface of the turntable 508. The roller 608 is sleeved inside the annular groove 609, and the roller 608 is in contact with the inner wall of the annular groove 609. By setting the slider 606 and the first screw rod 604, when the stroke control plate 601 is on the slide plate 50 1 moves to the left, driving the first tooth plate 602 to move to the left, and through the meshing connection between the first tooth plate 602 and the fourth gear 603, the fourth gear 603 drives the first screw rod 604 to rotate, and through the threaded connection between the slider 606 and the first screw rod 604, and the limiting cooperation of the slide groove 605, the slider 606 drives the roller 608 to move to the side close to the spline sleeve 506 through the connecting plate 607, so that the roller 608 squeezes the inner wall of the annular groove 609, thereby providing driving force for the movement of the rotating disk 508; Reference Figure 1-8A head clamping mechanism is provided on the top of the stroke control plate 601, and the head clamping mechanism includes a receiving plate 701, which is fixedly installed on the top of the stroke control plate 601, and a second screw rod 702 is fixedly installed on the bottom of the head support 4, and a receiving groove 703 is provided on the top of the receiving plate 701. The second screw rod 702 is slidably sleeved inside the receiving groove 703, and two limiting grooves 707 are provided on the top of the receiving plate 701. The internal sliding sleeve of the limiting groove 707 is provided with a limiting rod 708, and the bottom of the limiting rod 708 is fixedly connected to the top of the second tooth plate 706. A bearing plate 709 is fixedly installed on the top of the limiting rod 708, and a clamping rod 710 is provided on the internal sliding sleeve of the bearing plate 709. A clamping plate 711 is fixedly installed on the side of the clamping rod 710 close to the head support 4, and the clamping plate 711 An elastic cushion is installed on the upper surface, and a second spring 712 is installed between the clamping plate 711 and the bearing plate 709. By setting the head clamping mechanism, when the patient's head is located directly above the head support 4 and lies down, the head support 4 is squeezed. At this time, the two limiting rods 708 slide inside the limiting groove 707, and the two limiting rods 708 move in opposite directions at the same time, driving the two bearing plates 709 to move in opposite directions. At this time, the clamping plate 711 is in contact with the patient's head, and the patient's head is squeezed by the two clamping plates 711, so that the patient's head is limited, which is convenient for the operator to perform dental surgery. In addition, due to the setting of the second spring 712, the clamping plate 711 has a certain moving stroke, so that the patient is flexibly clamped to avoid causing discomfort to the patient. Reference Figure 1-8 A first spring 704 is fixedly installed at the bottom of the inner wall of the receiving groove 703, and the other end of the first spring 704 is fixedly connected to the bottom of the head support 4. A fifth gear 705 is rotatably installed inside the receiving plate 701, and the second screw rod 702 is threadedly sleeved inside the fifth gear 705. Two second tooth plates 706 are slidably installed inside the receiving plate 701, and the two second tooth plates 706 are meshed and connected with the fifth gear 705, and the two second tooth plates 706 are respectively located on the left and right sides of the fifth gear 705. By setting the fifth gear 705 and the second tooth plate Plate 706, when the head support 4 moves downward, it drives the second screw rod 702 to move downward, and the fifth gear 705 is rotated through the threaded connection between the second screw rod 702 and the fifth gear 705. At this time, the fifth gear 705 and the second tooth plate 706 are meshed and connected, and the two second tooth plates 706 are respectively located on the left and right sides of the fifth gear 705, so that the two second tooth plates 706 move in opposite directions. The fixed connection between the second tooth plate 706 and the limit rod 708 provides a driving force for the relative movement of the two limit rods 708.

[0023] Specifically, the working process or working principle of the auxiliary device for a dental operating table is as follows: when in use, the patient lies on the back plate 2 and the seat plate 3, pulls out the pin 614, and moves the stroke control plate 601 to the left. When the stroke control plate 601 moves to the left on the slide plate 501, it drives the first tooth plate 602 to move to the left. Through the meshing connection between the first tooth plate 602 and the fourth gear 603, the fourth gear 603 drives the first screw rod 604 to rotate. Through the threaded connection between the slider 606 and the first screw rod 604, and the limiting cooperation of the slide groove 605, the slider 606 drives the roller 608 to move to the side close to the spline sleeve 506 through the connecting plate 607, so that the roller 608 hits the inner wall of the annular groove 609. The two ends of the rotating rod 617 are respectively rotatably mounted inside the first connecting block 615 and the second connecting block 616. The first connecting block 615 remains stationary on the spline sleeve 506, so that the rotating rod 617 squeezes the second connecting block 616. Under the limiting action of the stroke plate 611, the stroke block 612 slides inside the stroke groove 610, so that the distance between the stroke block 612 and the center of the circle of the rotating disk 508 increases. After the head support 4 is located directly below the patient's head, the pin 614 is inserted into the stroke control plate 601 and the corresponding positioning groove 613. When the patient lies down, the head support 4 is squeezed, driving the second screw rod 702 to move downward, and the threads of the second screw rod 702 and the fifth gear 705 are screwed together. The fifth gear 705 is connected so that the fifth gear 705 rotates. At this time, the meshing connection between the fifth gear 705 and the second tooth plate 706, and the two second tooth plates 706 are respectively located on the left and right sides of the fifth gear 705, so that the two second tooth plates 706 move in opposite directions. Through the fixed connection between the second tooth plates 706 and the limit rods 708, the two limit rods 708 move in opposite directions at the same time, driving the two bearing plates 709 to move in opposite directions. At this time, the clamping plate 711 is in contact with the patient's head, and the patient's head is squeezed by the two clamping plates 711. The user activates the hydraulic rod 517 to drive the back plate 2 to rotate at the hinge between the back plate 2 and the seat plate 3, so as to adjust the inclination angle of the back plate 2. The third gear 511 is arranged on the back plate 2, so that the third gear 511 revolves around the hinge of the back plate 2 and the seat plate 3. Since the center of the ring gear 514 coincides with the center of the hinge of the back plate 2 and the seat plate 3, and the ring gear 514 and the third gear 511 are meshed, the third gear 511 rotates while revolving. When the third gear 511 starts to rotate, it drives the transmission rod 512 on the right to rotate. Through the cooperation of the rotating wheel and the transmission belt 513, the transmission rod 512 on the left rotates at the same time. Since the transmission rod 512 on the left is fixedly sleeved inside the second gear 510, the second gear 510 is driven to rotate. Through the meshing connection between the second gear 510 and the first gear 504, the first gear 504 rotates.The connecting rod 505 and the spline sleeve 506 are driven to rotate, and the meshing teeth of the spline sleeve 506 and the meshing teeth of the spline shaft 507 are meshed with each other, so that the spline shaft 507 drives the turntable 508 to rotate counterclockwise at the same time, driving the transmission shaft 509 to squeeze the inner wall of the transmission groove 503, so that the transmission frame 502 drives the slide plate 501 to move leftward, thereby causing the slide plate 501 to drive the head support 4 to move leftward.

Claims

1. An auxiliary device for a dental operating table, comprising a column (1), a back plate (2) and a seat plate (3) being arranged on the top of the column (1), a head support (4) being arranged on the top of the back plate (2), characterized in that: A support adjustment mechanism is provided on the front side of the back plate (2), and the support adjustment mechanism comprises: A slide plate (501), the slide plate (501) being slidably sleeved on the top of the back plate (2), a transmission frame (502) being fixedly mounted on the bottom of the slide plate (501), and a transmission groove (503) penetrating from front to back being formed on the transmission frame (502); a first gear (504), the first gear (504) being rotatably mounted on the front side of the back plate (2), a connecting rod (505) being fixedly mounted on the front side of the first gear (504), a spline sleeve (506) being fixedly mounted on the front side of the connecting rod (505), and an internal sliding sleeve of the spline sleeve (506) being provided with a spline shaft (507); A rotating disk (508) is fixedly mounted on the front side of the spline shaft (507). A transmission shaft (509) is arranged inside the rotating disk (508). The transmission shaft (509) is slidably sleeved inside the transmission groove (503).

2. The auxiliary device for a dental operating table according to claim 1, characterized in that: A second gear (510) and a third gear (511) are rotatably mounted on the front side of the back plate (2); the second gear (510) is meshingly connected with the first gear (504); a transmission rod (512) is fixedly sleeved inside the second gear (510) and the third gear (511); a rotating wheel is fixedly sleeved on the surface of the two transmission rods (512); and a transmission belt (513) is provided between the two transmission rods (512) via the rotating wheel sleeve.

3. The auxiliary device for a dental operating table according to claim 2, characterized in that: A gear ring (514) is fixedly mounted on the front side of the seat plate (3); the gear ring (514) and the hinged joint between the back plate (2) and the seat plate (3) are coaxially arranged; the third gear (511) and the gear ring (514) are meshingly connected; a first receiving plate (515) is mounted on the bottom of the back plate (2); a second receiving plate (516) is mounted on the left side of the column (1); and a hydraulic rod (517) is mounted between the first receiving plate (515) and the second receiving plate (516).

4. The auxiliary device for a dental operating table according to claim 3, characterized in that: The back plate (2) is provided with a stroke control mechanism, the stroke control mechanism comprising a stroke control plate (601), the stroke control plate (601) being slidably sleeved on the top of the slide plate (501), a first tooth plate (602) being fixedly mounted on the bottom of the stroke control plate (601), a fourth gear (603) being rotatably mounted inside the slide plate (501), the first tooth plate (602) and the fourth gear (603) being meshingly connected, and a first screw rod (604) being fixedly sleeved inside the fourth gear (603).

5. The auxiliary device for a dental operating table according to claim 4, characterized in that: A sliding groove (605) is provided at the bottom of the slide plate (501), a sliding block (606) is slidably sleeved inside the sliding groove (605), the sliding block (606) is threadedly sleeved on the surface of the first screw rod (604), a connecting plate (607) is fixedly installed at the bottom of the sliding block (606), a roller (608) is rotatably installed at the bottom of the connecting plate (607), an annular groove (609) is provided on the surface of the rotating disk (508), and the roller (608) is sleeved inside the annular groove (609).

6. The auxiliary device for a dental operating table according to claim 5, characterized in that: The rotating disk (508) is provided with a travel groove (610) which passes through from front to back, a travel plate (611) is fixedly installed inside the travel groove (610), a travel block (612) is slidably sleeved on the surface of the travel plate (611), the front side of the travel block (612) is fixedly connected to the rear side of the transmission shaft (509), a plurality of positioning grooves (613) are provided on the top of the slide plate (501), and a pin rod (614) is sleeved between the positioning groove (613) and the travel control plate (601).

7. The auxiliary device for a dental operating table according to claim 6, characterized in that: A first connecting block (615) is fixedly mounted on the top of the spline sleeve (506), a second connecting block (616) is fixedly mounted on the rear side of the travel block (612), a rotating rod (617) is arranged between the first connecting block (615) and the second connecting block (616), one end of the rotating rod (617) is rotatably sleeved inside the first connecting block (615), and the other end of the rotating rod (617) is rotatably sleeved inside the second connecting block (616).

8. The auxiliary device for a dental operating table according to claim 7, characterized in that: A head clamping mechanism is arranged on the top of the stroke control plate (601), and the head clamping mechanism comprises a receiving plate (701), the receiving plate (701) is fixedly mounted on the top of the stroke control plate (601), a second screw rod (702) is fixedly mounted on the bottom of the head support (4), a receiving groove (703) is provided on the top of the receiving plate (701), and the second screw rod (702) is slidably sleeved inside the receiving groove (703).

9. The auxiliary device for a dental operating table according to claim 8, characterized in that: A first spring (704) is fixedly mounted on the bottom of the inner wall of the accommodating groove (703); the other end of the first spring (704) is fixedly connected to the bottom of the head support (4); a fifth gear (705) is rotatably mounted inside the accommodating plate (701); the second screw rod (702) is threadedly sleeved inside the fifth gear (705); two second tooth plates (706) are slidably mounted inside the accommodating plate (701); the two second tooth plates (706) are meshingly connected to the fifth gear (705).

10. The auxiliary device for a dental operating table according to claim 9, characterized in that: Two limiting grooves (707) are provided on the top of the accommodating plate (701); a limiting rod (708) is provided inside the sliding sleeve of the limiting groove (707); the bottom of the limiting rod (708) is fixedly connected to the top of the second tooth plate (706); a bearing plate (709) is fixedly installed on the top of the limiting rod (708); a clamping rod (710) is provided inside the sliding sleeve of the bearing plate (709); a clamping plate (711) is fixedly installed on one side of the clamping rod (710) close to the head support (4); and a second spring (712) is installed between the clamping plate (711) and the bearing plate (709).

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