Instrument placement assembly and dental unit

Abstract

The utility model relates to medical instrument technical field especially is involved in a kind of instrument placing assembly and dental comprehensive treatment machine, instrument placing assembly includes: adjusting arm includes the first branch and the second branch of rotation connection, the length direction of second branch and the angle between the rotation axis of second branch relative to the first branch is adjustable;Instrument rack is set in the upper of adjusting arm and with the other end rotation connection in length direction of second branch, rotation connection place is set in the rotation connection place of the first branch and second branch upper, so that adjusting angle can change the distance of instrument rack and the first branch in vertical direction;At least one of instrument rack, second branch and the first branch generates movement, so that instrument rack rotates, goes up and down and / or horizontally moves.The utility model can be realized when adjusting the position of instrument rack avoid adjusting arm to pass above dental chair, facilitate patient to stand and lie down, also reduce the length of adjusting arm, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an instrument placement component and a dental comprehensive treatment machine. Background Technology

[0002] A dental comprehensive treatment unit is a professional medical device that integrates oral examination, treatment, and surgery. It includes a device holder for placing instruments and suspending dental handpieces, a dental treatment box, and a dental chair for the patient to lie on. The existing device holder is mounted on the dental treatment box by a robotic arm, so the robotic arm needs to be relatively long, resulting in higher costs. Moreover, because the robotic arm needs to move around the dental chair during examination, treatment, or surgery, it spans over the dental chair. Therefore, after the patient lies on the dental chair, they cannot get up directly, as they are prone to hitting their legs. The dentist needs to push the robotic arm away before the patient can get up, which makes it inconvenient to use. Utility Model Content

[0003] In view of this, the purpose of this application is to provide an instrument placement assembly and a dental comprehensive treatment machine to solve the problems of existing mechanical arms that connect to the placement rack and are mounted on the dental treatment box, which require the mechanical arm to be long and costly; and the mechanical arm passes over the dental chair, affecting the patient's standing and lying down, which is inconvenient to use.

[0004] The first aspect of this utility model provides an instrument placement assembly, comprising: The adjusting arm includes a first arm and a second arm. The first arm is movably mounted on the base of the dental chair, and one end of the second arm is rotatably mounted on the first arm in the length direction. The angle between the length direction of the second arm and the rotation axis of the second arm relative to the first arm is adjustable. An instrument frame is disposed above the adjusting arm and rotatably connected to the other end of the second arm in the longitudinal direction. The rotatable connection between the second arm and the instrument frame is disposed above the rotatable connection between the first arm and the second arm, so that the vertical distance between the instrument frame and the first arm can be changed when the angle is adjusted. At least one of the instrument frame, the second arm, and the first arm moves, causing the instrument frame to rotate, move up and down, and / or move horizontally.

[0005] Preferably, the adjusting arm further includes: The first rotating joint is located at the rotating connection between the first support arm and the dental chair base; The second rotary joint is located at the rotary connection between the first arm and the second arm; The third rotating joint is located at the rotating connection between the second arm and the instrument frame; The rotation axes of the first rotary joint, the second rotary joint, and the third rotary joint all extend in the vertical direction.

[0006] Preferably, the second arm includes: The first support rod extends along the length of the second support arm; The second support rod is arranged parallel to the first support rod; A housing assembly, wherein the first support rod and the second support rod are disposed inside the housing assembly, the housing assembly includes a first housing and a second housing, both the first housing and the second housing are fixed on the second support rod, a support member is installed on the second support rod, and the second housing is fixed to the first housing through the support member; The support member has a recessed position, and the second outer shell has a protrusion extending into the recessed position.

[0007] Preferably, the second outer shell is provided with a magnetic attractor, and the support member is formed with a magnetic connection portion that can magnetically attract the magnetic attractor to one side of the protrusion along the axial direction. Preferably, the second arm further includes: The first end cap is disposed on the side of the second arm facing the second rotating joint; The second end cap is disposed on the side of the second arm facing the third rotating joint; The first support rod and the second support rod are rotatably connected to the first end cap and the second end cap, respectively, to form four rotatable connection points. The four rotatable connection points are connected in sequence to form a parallelogram. The shape of the parallelogram is changed so that the second support arm can rotate in a direction close to or away from the rotation axis of the second rotation joint, thereby driving the instrument frame to move up and down.

[0008] Preferably, the second arm further includes: The elastic element has its two ends, in the telescopic direction, respectively mounted on the second end cap and the second support rod; A locking element is installed on the second support rod and can fix the relative positions of the first support rod and the second support rod. Preferably, it further includes: The fixing seat is fixedly connected to the dental chair base; The first rotary joint includes: The first rotating drum is mounted on one of the fixed base and the first support arm; The first rotating shaft is mounted on the other of the fixed base and the first support arm, and extends into the first rotating cylinder; A first damping element is installed on the first rotating shaft, such that the first damping element is positioned between the first rotating cylinder and the first rotating shaft; The first rotating sleeve is fitted onto the first rotating shaft; And / or, the second rotary joint includes: The second rotating drum is installed on one of the first support arm and the second support arm; The second rotating shaft is mounted on the other of the first and second supporting arms and extends into the second rotating drum; The second damping element is installed on the second rotating shaft, such that the second damping element is positioned between the second rotating cylinder and the second rotating shaft; The second rotating sleeve is fitted onto the second rotating shaft.

[0009] Preferably, the third rotary joint includes: The third rotating drum is mounted on one of the second arm and the instrument frame; The third rotating shaft is detachably mounted on the other of the second arm and the instrument frame, and extends into the third rotating cylinder; A clamping element is installed on the axial side of the third rotating shaft; The third rotating sleeve is fitted onto the third rotating shaft; part of the third rotating sleeve is disposed at the axial end of the third rotating cylinder, so that the third rotating sleeve can abut against the clamping member in the axial direction.

[0010] Preferably, the adjusting arm has a lead wire channel inside. The second aspect of this utility model provides a dental comprehensive treatment machine, including the instrument placement assembly of any of the above-described technical solutions.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The instrument placement assembly of this utility model includes an adjusting arm and an instrument holder. The adjusting arm includes a first arm and a second arm. The first arm is movably mounted on the dental chair base, and one end of the second arm is rotatably mounted on the first arm along its length. The angle between the length direction of the second arm and the rotation axis of the second arm relative to the first arm is adjustable. The instrument holder is positioned above the adjusting arm and rotatably connected to the other end of the second arm along its length. The rotatable connection between the second arm and the instrument holder is located above the rotatable connection between the first arm and the second arm, allowing the vertical distance between the instrument holder and the first arm to be changed when the angle is adjusted. The instrument holder, the second arm, and the first arm... At least one of the components moves, causing the instrument rack to rotate, move up and down, and / or move horizontally. This is achieved by mounting the instrument rack on the dental chair base via an adjusting arm. The multi-angle adjustment of the first and second arms, the movement of the first arm relative to the dental chair base, and the relative rotation of the instrument components with the second arm allow the instrument rack to rotate, move up and down, and / or move horizontally when at least one of the instrument rack, the second arm, and the first arm moves. This prevents the adjusting arm from passing over the dental chair when adjusting the position of the instrument rack, facilitating patient standing and lying down, reducing the length of the adjusting arm, lowering costs, and ultimately improving the ease of use of the dental treatment machine while reducing manufacturing costs.

[0012] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the instrument placement assembly provided in an embodiment of this utility model; Figure 2 for Figure 1 A schematic diagram of the structure cut across the first rotational joint in the posture; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 for Figure 1 A schematic diagram of the structure cut open at the second arm in the desired orientation; Figure 5 for Figure 4 Enlarged structural diagram at point B; Figure 6 for Figure 4 Enlarged structural diagram at point C; Figure 7 A schematic diagram of the structure of the instrument placement assembly provided in an embodiment of the present invention, showing how the rotation of the second arm lowers the instrument rack; Figure 8 for Figure 7 A schematic diagram of the structure cut open at the second arm in this orientation.

[0015] Icons: 10-First arm; 20-Second arm; 201-First support rod; 202-Second support rod; 203-First end cap; 204-Second end cap; 21-First outer shell; 22-Second outer shell; 23-Support member; 231-Recessed position; 24-Protruding post; 25-Magnetic suction member; 26-Elastic member; 27-Locking member; 30-First rotating joint; 31-First rotating cylinder; 32-First rotating shaft; 33-First damping member; 34-First rotating sleeve; 35-Adjusting hole; 36-Limiting member; 40-Second rotating joint; 41-Second rotating cylinder; 42-Second rotating shaft; 43-Second damping member; 44-Second rotating sleeve; 50-Third rotating joint; 51-Third rotating cylinder; 52-Third rotating shaft; 53-Clamping member; 54-Third rotating sleeve; 60-Instrument rack; 70-Fixing base. Detailed Implementation

[0016] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0017] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0018] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0019] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0020] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0021] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0022] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0023] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0024] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0025] According to the first aspect of the present invention, an instrument placement assembly includes an adjusting arm and an instrument rack 60.

[0026] The specific structure of the above-described components of the instrument placement assembly according to this embodiment will be described below.

[0027] In this embodiment, as Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the adjusting arm includes a first arm 10 and a second arm 20. The first arm 10 and the second arm 20 are integrally formed into a strip structure. The first arm 10 is movably mounted on the base of the dental chair. One end of the second arm 20 is rotatably mounted on the first arm 10 in the length direction. The angle between the length direction of the second arm 20 and the rotation axis of the second arm 20 relative to the first arm 10 is adjustable, so that the second arm 20 can be adjusted relative to the first arm 10 at multiple angles.

[0028] like Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, the instrument frame 60 is positioned above the adjusting arm, allowing the adjusting arm to lift the instrument frame 60. The instrument frame 60 is rotatably connected to the other end of the second support arm 20 in the longitudinal direction. The rotatable connection between the second support arm 20 and the instrument frame 60 is located above the rotatable connection between the first support arm 10 and the second support arm 20. This allows adjusting the angle between the length direction of the second support arm 20 and the rotation axis of the second support arm 20 relative to the first support arm 10 to change the vertical distance between the instrument frame 60 and the first support arm 10. At this time, the second support arm 20 can be tilted upwards or perpendicular to the ground to provide support for the instrument frame 60, ensuring the instrument frame 60 is supported. With the instrument rack 60 always kept horizontal, the height of the instrument rack 60 relative to the dental chair base in the vertical direction can be adjusted using the second support arm 20. At least one of the instrument rack 60, the second support arm 20, and the first support arm 10 can move, causing the instrument rack 60 to rotate, move up and down, and / or move horizontally. This prevents the adjustment arm from passing over the dental chair when adjusting the position of the instrument rack 60, eliminating the need for the dentist to push the instrument rack 60 away to facilitate the patient's standing and lying down. Compared to the mechanical arm structure mounted on the dental treatment box, this also reduces the length of the adjustment arm, lowers costs, and thus improves the ease of use of the dental comprehensive treatment machine and reduces the manufacturing cost of the dental comprehensive treatment machine.

[0029] It should be noted that when adjusting the position of the instrument rack 60, the movement of the instrument rack 60 and / or the adjusting arm can be achieved by pulling or pushing the instrument rack 60. Specifically, the handle on the instrument rack 60 can be pulled or pushed to make at least one of the instrument rack 60, the second arm 20 and the first arm 10 move, thereby completing the rotation, vertical lifting and / or horizontal movement of the instrument rack 60.

[0030] Specifically, in this embodiment, such as Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the adjusting arm also includes a first rotating joint 30, a second rotating joint 40, and a third rotating joint 50; the first rotating joint 30 is located at the rotating connection between the first arm 10 and the dental chair base, so that the first arm 10 can rotate relative to the dental chair base; the second rotating joint 40 is located at the rotating connection between the first arm 10 and the second arm 20, so that the second arm 20 can rotate relative to the first arm 10; the third rotating joint 50 is located at the rotating connection between the second arm 20 and the instrument rack 60, so that the instrument rack 60 can rotate relative to the second arm 20.

[0031] More specifically, in this embodiment, the rotation axes of the first rotary joint 30, the second rotary joint 40, and the third rotary joint 50 all extend vertically, ensuring that the instrument rack 60 remains horizontal during adjustment. Preferably, the first support arm 10 extends horizontally, ensuring that the first support arm 10 remains in a plane parallel to the ground during rotation relative to the dental chair base, thereby achieving smooth adjustment of the distance between the second support arm 20 and the dental chair.

[0032] Furthermore, such as Figures 4 to 6 and Figure 8 As shown, the second support arm 20 includes a first support rod 201, a second support rod 202, and a housing assembly. The first support rod 201 and the second support rod 202 are both formed as rod-shaped structures. The first support rod 201 extends along the length direction of the second support arm 20. The second support rod 202 is arranged parallel to the first support rod 201. The first support rod 201 and the second support rod 202 are disposed inside the housing assembly.

[0033] Specifically, the housing assembly includes a first housing 21 and a second housing 22, which are fastened together in a direction perpendicular to the length of the second support arm 20 to form the housing assembly. Both the first housing 21 and the second housing 22 are fixed to the second support rod 202, wherein the first housing 21 is directly fixed to the second support rod 202, and a support member 23 is installed on the second support rod 202. The support member 23 can be formed into a plate-like structure, and the second housing 22 is fixed to the first housing 21 through the cooperation of the support member 23.

[0034] More specifically, such as Figure 5 As shown, the support member 23 has a recessed position 231, which can be a groove structure or a hole structure. The second outer shell 22 has a protruding post 24 extending into the recessed position 231. The protruding post 24 and the second outer shell 22 can be formed as a separate structure that needs to be assembled, or as an integral structure. For example, the protruding post 24 can be a cylindrical structure that protrudes outward from the inner wall of the second outer shell 22. The recessed position 231 and the protruding post 24 cooperate to play the role of pin positioning.

[0035] In a preferred embodiment, such as Figure 5As shown, a magnetic attractor 25 is provided on the second outer shell 22, and the magnetic attractor 25 is disposed inside the second outer shell 22. The magnetic attractor 25 can be a permanent magnet, such as a magnet; in other alternative embodiments, the magnetic attractor can also be an electromagnet. A magnetic connection portion is formed on the support member 23, which can magnetically attract the magnetic attractor 25 on one side of the protrusion 24 in the axial direction, so that the magnetic attractor 25 can be directly attracted to the support member 23 to play the role of limiting the protrusion 24 in the axial direction. The support member 23 can be a component made entirely of magnetic materials such as iron, cobalt, and nickel, or a part of the support member 23 (i.e., the position where it cooperates with the magnetic attractor 25) can be provided to magnetically attract the magnetic attractor 25 to form a magnetic connection portion.

[0036] Optionally, the support member 23 is made of steel.

[0037] Furthermore, such as Figure 4 and Figure 8 As shown, the second arm 20 also includes a first end cap 203 and a second end cap 204, wherein the first end cap 203 is disposed on the side of the second arm 20 facing the second rotation joint 40; the second end cap 204 is disposed on the side of the second arm 20 facing the third rotation joint 50; the first support rod 201 and the second support rod 202 are respectively rotatably connected to the first end cap 203 and the second end cap 204 to form four rotation connection points. The first support rod 201 and the second support rod 202 can be hinged to the second end cap 204 and the second end cap 204 respectively. Since the first support rod 201 and the second support rod 202 are arranged parallel to each other, the four rotation connection points are connected in sequence to form a parallelogram, driving the shape of the parallelogram to change, that is, to change the angle between the length direction of the second arm 20 and the rotation axis of the second arm 20 relative to the first arm 10, so that the second arm 20 can rotate along the rotation axis close to or away from the second rotation joint 40, thereby driving the instrument frame 60 to move up and down.

[0038] Furthermore, in this embodiment, as Figure 4 and Figure 8As shown, the second support arm 20 also includes an elastic element 26 and a locking element 27. The elastic element 26 can be a spring assembly capable of extension and retraction. Both ends of the elastic element 26 are respectively mounted on the second end cap 204 and the second support rod 202 in its extension and retraction direction, providing the second support arm 20 with a constant upward lifting tendency. The locking element 27 is mounted on the second support rod 202 and can fix the relative position of the first support rod 201 and the second support rod 202, thereby locking the second support arm 20 in the adjusted position. It should be noted that the locking element 27 can be a pneumatic lock structure, i.e., the locking protrusion in the locking element 27 is pneumatically controlled to extend outward and abut against the first support rod 201, thereby fixing the relative position of the first support rod 201 and the second support rod 202 and locking the parallelogram shape. Optionally, friction can also be used to lock the relative position of the first support rod 201 and the second support rod 202.

[0039] In other alternative embodiments, the first arm 10 and the second arm 20 are connected by a universal joint ball to achieve multi-angle rotation drive. In this embodiment, as Figure 2 and Figure 3 As shown, the instrument placement assembly also includes a fixed base 70 fixedly connected to the dental chair base; the first rotating joint 30 includes a first rotating cylinder 31, a first rotating shaft 32, a first damping element 33, and a first rotating sleeve 34, wherein the first rotating cylinder 31 is mounted on one of the fixed base 70 and the first support arm 10; the first rotating shaft 32 is mounted on the other of the fixed base 70 and the first support arm 10, for example, the first rotating cylinder 31 is mounted on the fixed base 70 and the first rotating shaft 32 is mounted on the first support arm 10, and the first rotating shaft 32 extends into the first rotating cylinder 31. Inside the cylinder 31, the relative rotation between the first support arm 10 and the fixed seat 70 is achieved; the first damping element 33 is installed on the first rotating shaft 32, such that the first damping element 33 is located between the first rotating cylinder 31 and the first rotating shaft 32 in the radial direction of the first rotating shaft 32; the first rotating sleeve 34 is sleeved on the first rotating shaft 32, and the first rotating sleeve 34 is located on the side of the first damping element 33 in the axial direction. The first rotating sleeve 34 can be a plane bearing or a self-lubricating plastic pad to ensure the smooth rotation of the first rotating shaft 32 and the first rotating cylinder 31.

[0040] It should be noted that in this embodiment, the rotational damping is adjusted by screwing the nail body tightly against the first damping member 33; specifically, as shown... Figure 3 As shown, the first rotating drum 31 has an adjustment hole 35 on its side wall that mates with the nail body. The inner wall of the adjustment hole 35 is threaded to form a threaded hole. The resistance of the first damping member 33 is adjusted by a screw installed in the threaded hole.

[0041] Furthermore, in this embodiment, the first rotating joint 30 also includes a limiting member 36 installed on the circumferential sidewall of the first rotating shaft 32. The limiting member 36 can be an annular structure to axially limit the components installed on the first rotating shaft 32. The limiting member 36 can be a retaining ring or a locking nut, etc.

[0042] In this embodiment, as Figure 6 As shown, the second rotating joint 40 includes a second rotating cylinder 41, a second rotating shaft 42, a second damping element 43, and a second rotating sleeve 44. The second rotating cylinder 41 is mounted on one of the first support arm 10 and the second support arm 20, and the second rotating shaft 42 is mounted on the other of the first support arm 10 and the second support arm 20. For example, the second rotating cylinder 41 is mounted on the first support arm 10 and the second rotating shaft 42 is mounted on the second support arm 20, with the second rotating shaft 42 extending into the second rotating cylinder 41, thus enabling the second support arm 20 to rotate relative to the first support arm 10. The second damping element 43 is mounted on the second rotating shaft 42, such that the second damping element 43 is positioned between the second rotating cylinder 41 and the second rotating shaft 42. The second rotating sleeve 44 is sleeved on the second rotating shaft 42 and is positioned lateral to the second damping element 43 in the axial direction. The second rotating sleeve 44 can be a plane bearing or a self-lubricating plastic pad to ensure the smooth rotation of the second rotating shaft 42 and the second rotating cylinder 41.

[0043] It should be noted that in this embodiment, the structure of the second rotating joint 40 can be the same as that of the first rotating joint 30, and the method of adjusting the resistance of the second damping member 43 can be referred to the first damping member 33 as described above, which will not be repeated here.

[0044] In this embodiment, as Figure 5 As shown, the third rotating joint 50 includes a third rotating cylinder 51, a third rotating shaft 52, a clamping member 53, and a third rotating sleeve 54. The third rotating cylinder 51 is mounted on one of the second support arm 20 and the instrument rack 60. The third rotating shaft 52 is detachably mounted on the other of the second support arm 20 and the instrument rack 60. For example, the third rotating cylinder 51 is fixed to the instrument rack 60, and the third rotating shaft 52 is detachably mounted on the second support arm 20, so that the instrument rack 60 and the adjusting arm can be detachably connected, facilitating maintenance and replacement to adapt to instrument racks 60 of different sizes and specifications. 0, and the third rotating shaft 52 extends into the third rotating cylinder 51, thus realizing the rotation of the instrument frame 60 relative to the second arm 20; the clamping member 53 is installed on the axial side of the third rotating shaft 52, and the clamping member 53 can be formed into a sheet structure, for example, a pressure plate can be used, and the damping of the third rotating joint 50 can be adjusted by rotating the pressure plate to adjust the pre-pressure; the third rotating sleeve 54 is sleeved on the third rotating shaft 52; part of the third rotating sleeve 54 is located at the axial end of the third rotating cylinder 51, so that the third rotating sleeve 54 can abut against the clamping member 53 in the axial direction.

[0045] Preferably, the third rotating sleeve 54 is made of POM (polyoxymethylene) material, that is, the third rotating sleeve 54 is a POM part, so as to have a self-lubricating effect.

[0046] Furthermore, in this embodiment, such as Figure 4 and Figure 8 As shown, the adjusting arm has a lead wire channel inside to provide installation space for water, gas and electricity pipelines; specifically, the first rotating sleeve 34, the second rotating sleeve 44 and the third rotating sleeve 54, as well as the first rotating shaft 32, the second rotating shaft 42 and the third rotating shaft 52 are all hollow structures inside, and the support member 23 as described above is formed into a plate structure with an L-shaped cross section to meet the needs of water, gas and electricity pipelines passing through.

[0047] The instrument placement assembly according to this utility model includes an adjusting arm and an instrument holder 60. The adjusting arm includes a first arm 10 and a second arm 20. The first arm 10 is movably mounted on the dental chair base, and one end of the second arm 20 is rotatably mounted on the first arm 10 along its length. The angle between the length direction of the second arm 20 and the rotation axis of the second arm 20 relative to the first arm 10 is adjustable. The instrument holder 60 is disposed above the adjusting arm and rotatably connected to the other end of the second arm 20 along its length. The rotatable connection between the second arm 20 and the instrument holder 60 is located above the rotatable connection between the first arm 10 and the second arm 20, so that the vertical angle between the instrument holder 60 and the first arm 10 can be changed when adjusting the angle. Distance; At least one of the instrument holder 60, the second arm 20, and the first arm 10 moves, causing the instrument holder 60 to rotate, move up and down, and / or move horizontally. Thus, when the instrument holder 60 is mounted on the dental chair base via an adjusting arm, and the multi-angle adjustment of the first arm 10 and the second arm 20, the movement of the first arm 10 relative to the dental chair base, and the relative rotation of the instrument holder 60 and the second arm 20, the instrument holder 60 can rotate, move up and down, and / or move horizontally when at least one of the instrument holder 60, the second arm 20, and the first arm 10 moves. This prevents the adjusting arm from passing over the dental chair when adjusting the position of the instrument holder 60, making it easier for the patient to stand up and lie down, and also reducing the length of the adjusting arm and lowering costs.

[0048] The dental comprehensive treatment machine provided by this utility model includes the above-mentioned instrument placement assembly, and thus has all the beneficial effects of the instrument placement assembly, which will not be repeated here.

[0049] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. An instrument placement assembly, characterized in that, include: The adjusting arm includes a first arm and a second arm. The first arm is movably mounted on the base of the dental chair, and one end of the second arm is rotatably mounted on the first arm in the length direction. The angle between the length direction of the second arm and the rotation axis of the second arm relative to the first arm is adjustable. An instrument frame is disposed above the adjusting arm and rotatably connected to the other end of the second arm in the longitudinal direction. The rotatable connection between the second arm and the instrument frame is disposed above the rotatable connection between the first arm and the second arm, so that the vertical distance between the instrument frame and the first arm can be changed when the angle is adjusted. At least one of the instrument frame, the second arm, and the first arm moves, causing the instrument frame to rotate, move up and down, and / or move horizontally.

2. The instrument placement assembly according to claim 1, characterized in that, The adjusting arm also includes: The first rotating joint is located at the rotating connection between the first support arm and the dental chair base; The second rotary joint is located at the rotary connection between the first arm and the second arm; The third rotating joint is located at the rotating connection between the second arm and the instrument frame; The rotation axes of the first rotary joint, the second rotary joint, and the third rotary joint all extend in the vertical direction.

3. The instrument placement assembly according to claim 2, characterized in that, The second arm includes: The first support rod extends along the length of the second support arm; The second support rod is arranged parallel to the first support rod; A housing assembly, wherein the first support rod and the second support rod are disposed inside the housing assembly, the housing assembly includes a first housing and a second housing, both the first housing and the second housing are fixed on the second support rod, a support member is installed on the second support rod, and the second housing is fixed to the first housing through the support member; The support member has a recessed position, and the second outer shell has a protrusion extending into the recessed position.

4. The instrument placement assembly according to claim 3, characterized in that, The second outer shell is provided with a magnetic attractor, and the support member is formed with a magnetic connection part that can magnetically attract the magnetic attractor to one side of the convex column in the axial direction.

5. The instrument placement assembly according to claim 3, characterized in that, The second arm also includes: The first end cap is disposed on the side of the second arm facing the second rotating joint; The second end cap is disposed on the side of the second arm facing the third rotating joint; The first support rod and the second support rod are rotatably connected to the first end cap and the second end cap, respectively, to form four rotatable connection points. The four rotatable connection points are connected in sequence to form a parallelogram. The shape of the parallelogram is changed so that the second support arm can rotate in a direction close to or away from the rotation axis of the second rotation joint, thereby driving the instrument frame to move up and down.

6. The instrument placement assembly according to claim 5, characterized in that, The second arm also includes: The elastic element has its two ends, in the telescopic direction, respectively mounted on the second end cap and the second support rod; A locking element is installed on the second support rod and can fix the relative positions of the first support rod and the second support rod.

7. The instrument placement assembly according to claim 2, characterized in that, Also includes: The fixing seat is fixedly connected to the dental chair base; The first rotary joint includes: The first rotating drum is mounted on one of the fixed base and the first support arm; The first rotating shaft is mounted on the other of the fixed base and the first support arm, and extends into the first rotating cylinder; A first damping element is installed on the first rotating shaft, such that the first damping element is positioned between the first rotating cylinder and the first rotating shaft; The first rotating sleeve is fitted onto the first rotating shaft; And / or, the second rotary joint includes: The second rotating drum is installed on one of the first support arm and the second support arm; The second rotating shaft is mounted on the other of the first and second supporting arms and extends into the second rotating drum; The second damping element is installed on the second rotating shaft, such that the second damping element is positioned between the second rotating cylinder and the second rotating shaft; The second rotating sleeve is fitted onto the second rotating shaft.

8. The instrument placement assembly according to claim 2, characterized in that, The third rotary joint includes: The third rotating drum is mounted on one of the second arm and the instrument frame; The third rotating shaft is detachably mounted on the other of the second arm and the instrument frame, and extends into the third rotating cylinder; A clamping element is installed on the axial side of the third rotating shaft; The third rotating sleeve is fitted onto the third rotating shaft; part of the third rotating sleeve is disposed at the axial end of the third rotating cylinder, so that the third rotating sleeve can abut against the clamping member in the axial direction.

9. The instrument placement assembly according to claim 1, characterized in that, The adjusting arm has a lead wire channel inside.

10. A dental comprehensive treatment machine, characterized in that, Includes the instrument placement assembly according to any one of claims 1 to 9.

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