Chair frame rotating device and dental chair

Abstract

The utility model relates to medical instrument technical field especially is involved in a kind of chair frame rotating device and dental chair, chair frame rotating device includes: rotating member and support are arranged in vertical direction, dental chair frame is installed on rotating member;Gear set includes first gear and second gear meshing each other;First gear is fixedly installed on support;Driving member is fixed relative to rotating member;Driving member has output shaft, second gear is installed on output shaft, so that second gear is fixed relative to rotating member, first gear and rotating member rotation cooperation;Output shaft has first rotation direction and second rotation direction, to drive rotating member relative to support rotation along first rotation direction or second rotation direction, which are oppositely arranged.Employing driving member to drive dental chair frame to rotate in horizontal direction can be realized, so that getting on and off in multiple directions can be realized, and different use requirements are satisfied.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a chair frame rotating device and a dental chair. Background Technology

[0002] Dental chairs are essential in dental treatment, providing a place for patients to lie down during the procedure. The chair frame is the core component of the dental chair. Typically, the chair frame is fixed to the base of the dental chair and directly connected via a lifting mechanism to raise and lower the frame. This allows adjustment of the patient's height from the ground while lying down and facilitates getting in and out of the dental chair. However, in actual use, simply raising and lowering the frame is not enough, as the dental chair is also equipped with side cases, instrument trays, and other components, making it difficult to get in and out of the chair in certain situations and failing to meet different usage needs. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a chair frame rotating device and a dental chair to solve the problem that existing dental chairs cannot be adjusted in direction, which makes it inconvenient to get in and out of the dental chair in certain scenarios and fails to meet different usage needs.

[0004] The first aspect of this utility model provides a chair frame rotating device, comprising: Support components; A rotating component is arranged vertically with the supporting component, and the dental chair frame is mounted on the rotating component; The gear set includes a first gear and a second gear that mesh with each other; the first gear is fixedly mounted on the support member. A driving component is fixed relative to the rotating component; the driving component has an output shaft, and a second gear is mounted on the output shaft such that the second gear is fixed relative to the rotating component, and the first gear is rotatably engaged with the rotating component; The output shaft has a first rotation direction and a second rotation direction that are opposite to each other, so as to drive the rotating member to rotate relative to the support member along the first rotation direction or the second rotation direction.

[0005] Preferably, the rotation axes of the first gear and the second gear extend in a vertical direction; the gear set is disposed below the rotating member, and the rotating member has a clearance for the output shaft to pass through.

[0006] Preferably, the diameter of the first gear is larger than the diameter of the second gear; And / or, the number of teeth of the first gear is greater than the number of teeth of the second gear. Preferably, the support member has a first limiting part and a second limiting part, which together form a rotation space in the horizontal direction; the rotating member has a limiting post extending into the rotation space; when the driving member drives the rotating member to rotate along the first rotation direction or the second rotation direction, the limiting post can abut against the first limiting part or the second limiting part. Preferably, it further includes: The detection element is disposed on the first limiting part and the second limiting part to detect the position of the limiting post in the rotation space; or the detection element is mounted on the driving member to detect the torque output by the driving member.

[0007] Preferably, the rotating component is disposed above the support component; in the vertical direction, the gear set is sandwiched between the rotating component and the support component; the rotating component has a through hole, and the side of the first gear facing the rotating component has a protrusion extending into the through hole.

[0008] Preferably, the protrusion extends out of the through hole, such that a portion of the protrusion protrudes from the side of the rotating member facing away from the support member; The chair frame rotating device further includes: The support member is sleeved on the protrusion and fits against the surface of the rotating member; A locking element is disposed above the support member and is threadedly engaged with the portion of the protrusion that extends out of the through hole.

[0009] Preferably, it further includes: A support member is fixedly connected to the support member and the first gear. The support member is disposed below the first gear, such that the first gear and the support member form a predetermined distance in the vertical direction.

[0010] Preferably, the rotating component is provided with a first support seat and a second support seat for connecting the dental chair frame; The bottom of the second support has an installation space, and at least a portion of the drive component is disposed in the installation space.

[0011] The second aspect of this utility model provides a dental chair, including the chair frame rotating device described in any of the above technical solutions.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the rotating component and the supporting component are arranged vertically, and the chair frame is mounted on the rotating component. The gear set includes a first gear and a second gear that mesh with each other. The first gear is fixedly mounted on the supporting component. The driving component is fixed relative to the rotating component. The driving component has an output shaft, and the second gear is mounted on the output shaft, so that the second gear is fixed relative to the rotating component, and the first gear rotates in cooperation with the rotating component. The output shaft has a first rotation direction and a second rotation direction that are opposite to each other, so as to drive the rotating component to rotate relative to the supporting component along the first rotation direction or the second rotation direction. In this way, the driving component is used to drive the chair frame to rotate in the horizontal direction, so that people can get in and out from multiple directions to meet different usage needs.

[0013] 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

[0014] 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.

[0015] Figure 1 A schematic diagram of the structure of the chair frame rotating device provided in an embodiment of this utility model; Figure 2 A schematic diagram of the chair frame rotating device provided in an embodiment of this utility model from another perspective; Figure 3 A structural cross-sectional view of the chair frame rotating device provided in an embodiment of this utility model; Figure 4 A schematic diagram of the chair frame rotating device provided in an embodiment of this utility model from another perspective.

[0016] Icons: 10-Support component; 101-First limiting part; 102-Second limiting part; 100-Rotation space; 11-First support seat; 12-Second support seat; 121-Installation space; 20-Rotating component; 21-Limiting post; 22-Allowing position; 23-Through hole; 31-First gear; 311-Protrusion; 32-Second gear; 40-Drive component; 41-Output shaft; 50-Bearing component; 60-Locking component; 70-Supporting component. Detailed Implementation

[0017] 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.

[0018] 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.

[0019] 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.

[0020] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] According to the first aspect of the present invention, a chair frame rotating device includes a support member 10, a rotating member 20, a gear set, and a driving member 40.

[0027] The specific structure of the above-described components of the chair frame rotating device according to this embodiment will be described below.

[0028] In this embodiment, as Figures 1 to 4 As shown, the support member 10 can be formed as a plate-like structure that can be placed horizontally. The rotating member 20 is arranged vertically with the support member 10. The rotating member 20 can rotate relative to the support member 10. The dental chair frame is mounted on the rotating member 20, so that the rotating member 20 can drive the dental chair frame to rotate together. The main body of the rotating member 20 is preferably formed as a plate-like structure, so that it can be parallel to the plate-like structure on the support member 10, thereby ensuring the smooth rotation of the dental chair frame.

[0029] like Figure 2 and Figure 3 As shown, the gear set includes a first gear 31 and a second gear 32 that mesh with each other; the first gear 31 is fixedly mounted on the support member 10; the driving member 40 is fixed relative to the rotating member 20, and the driving member 40 can be mounted on the rotating member 20. The driving member 40 can be a power device such as a motor or a rotary cylinder that can drive the rotating member 20 to rotate; the driving member 40 has an output shaft 41, and the second gear 32 is mounted on the output shaft 41, so that the power output by the driving member 40 can drive the second gear 32 to rotate, thereby realizing the relative rotation of the first gear 31 and the second gear 32. Since the driving component 40 is fixed relative to the rotating component 20, the second gear 32 is also fixed relative to the rotating component 20. The first gear 31 rotates in conjunction with the rotating component 20, thus enabling the driving component 40 to drive the rotating component 20 to rotate relative to the support component 10. The output shaft 41 has a first rotation direction and a second rotation direction that are opposite to each other, so as to drive the rotating component 20 to rotate relative to the support component 10 along the first rotation direction or the second rotation direction. This enables the driving component 40 to drive the dental chair frame to rotate in the horizontal direction, thereby allowing people to get in and out from multiple directions and meeting different usage needs.

[0030] It should be noted that the first rotation direction and the second rotation direction can be clockwise and counterclockwise directions around the axis of the output shaft 41, respectively.

[0031] Furthermore, in a preferred embodiment, such as Figure 2 and Figure 3 As shown, both the first gear 31 and the second gear 32 are cylindrical gears, and their rotation axes extend vertically. The gear set is positioned below the rotating member 20, which has a clearance 22 for the output shaft 41 to pass through, thus satisfying the requirement that the output shaft 41 drives the second gear 32 to rotate. In this embodiment, the clearance 22 can be a groove structure recessed inward from the side wall of the rotating member 20, or a through hole structure penetrating the rotating member 20, as long as it can meet the connection requirements between the output shaft 41 and the second gear 32.

[0032] In this embodiment, as Figure 2 and Figure 3 As shown, the diameter of the first gear 31 is greater than the diameter of the second gear 32 and / or the number of teeth of the first gear 31 is greater than the number of teeth of the second gear 32, so that the gear set is formed as a reduction mechanism to achieve the accuracy of the rotation angle of the drive member 40 driving the rotating member 20. Furthermore, in this embodiment, as Figure 1 , Figure 2 and Figure 4As shown, a first limiting part 101 and a second limiting part 102 are formed on the support member 10. The first limiting part 101 and the second limiting part 102 form a rotation space 100 in the horizontal direction. That is, the first limiting part 101 and the second limiting part 102 are spaced apart from each other in the horizontal direction to form a rotation space 100 between them. The first limiting part 101 and the second limiting part 102 can be a protrusion structure formed by protruding outward from the circumferential sidewall of the support member 10, or a groove or through hole can be provided on the support member 10. The two groove walls or hole walls that are opposite to each other on the groove or through hole are the first limiting part 101 and the second limiting part 102.

[0033] A limiting post 21 extending into the rotation space 100 is formed on the rotating member 20. The limiting post 21 can be formed as a rod-shaped or column-shaped structure extending downward from the bottom of the rotating member 20. When the driving member 40 drives the rotating member 20 to rotate in the first rotation direction or the second rotation direction, the limiting post 21 can abut against the first limiting part 101 or the second limiting part 102, so that the first limiting part 101 and the second limiting part 102 can interfere with the movement of the limiting post 21. In this way, the limiting post 21 can only move back and forth in the rotation space 100, thereby limiting the rotation range of the rotating member 20. It should be noted that when the limiting post 21 can abut against the first limiting part 101 or the second limiting part 102, it indicates that the limiting post 21 has moved to the limit position, indicating that the rotating member 20 has rotated to the maximum angle relative to the support member 10.

[0034] Preferably, the driving member 40 is a speed reduction driving component, such as a speed reduction motor. When the rotating member 20 moves to a specific position (for example, when the limiting post 21 abuts against the first limiting part 101 or the second limiting part 102), it stops moving. Since there is a high transmission ratio inside the speed reduction motor, external force cannot easily drive the speed reduction motor to rotate, so that the speed reduction motor itself constitutes a positioning device, thereby limiting the rotating member 20 to a fixed position when it stops moving.

[0035] Furthermore, the chair frame rotation device also includes a detection element. In a preferred embodiment, the detection element is disposed on the first limiting part 101 and the second limiting part 102 to detect the position of the limiting post 21 in the rotation space 100. At this time, the detection element can be a micro switch. When the limiting post 21 abuts against the first limiting part 101 or the second limiting part 102, a signal indicating that the limiting post 21 has moved to the limit position is emitted. When the drive unit 40 detects the signal, it can stop the output shaft 41 from continuing to drive the second gear 32.

[0036] In a second preferred embodiment, a detection element is mounted on the drive element 40 to detect the torque output by the drive element 40. In this case, a torque detector can be used. By detecting the torque output by the drive element, the movement position of the limit post 21 in the rotation space 100 is controlled. The drive element 40 can stop outputting power based on the signal output by the torque detector. However, the method of detecting the torque output by the drive element 40 is not limited to this. A device with its own torque detection function can also be used, such as a motor with torque detection capabilities. This motor stops operating when it detects excessive torque, thus eliminating the need for an additional torque detector.

[0037] In this embodiment, as Figure 3 As shown, the rotating component 20 is positioned above the support component 10; in the vertical direction, the gear set is sandwiched between the rotating component 20 and the support component 10; the rotating component 20 has a through hole 23, which is a through hole structure; the first gear 31 has a protrusion 311 extending into the through hole 23 on the side facing the rotating component 20, so that the protrusion 311 and the through hole 23 form a shaft hole mating structure, and the first gear 31 and the rotating component 20 form a rotational connection relationship, so that the rotating component 20 can rotate around the first gear 31, which can improve the stability of the rotation of the rotating component 20 relative to the support component 10 to a certain extent.

[0038] Furthermore, such as Figure 3 As shown, the protrusion 311 extends out of the through hole 23, such that a portion of the protrusion 311 protrudes from the side of the rotating member 20 facing away from the support member 10, that is, a portion of the protrusion 311 extends to the upper surface of the rotating member 20. In this embodiment, the chair frame rotating device also includes a bearing member 50 and a locking member 60. The bearing member 50 is sleeved on the protrusion 311, and the bearing member 50 is in contact with the surface of the rotating member 20 to support the rotating member 20. The bearing member 50 can be a plane bearing. Preferably, the upper and lower surfaces of the rotating member 20 are provided with bearing members 50 to improve the bearing reliability.

[0039] like Figure 3 As shown, the locking member 60 is disposed above the support member 50 and is threadedly engaged with the portion of the protrusion 311 extending out of the through hole 23. Specifically, at least a portion of the circumferential sidewall of the portion of the protrusion 311 extending out of the through hole 23 has external threads. The locking member 60 is formed as an annular structure fitted onto the protrusion 311, and its inner wall has internal threads, thus limiting the position of the support member 50. In this embodiment, the locking member 60 can be a nut.

[0040] In other alternative embodiments, the locking member 60 may be a structure such as a limiting pin, as long as it can limit the axial movement of the bearing member 50.

[0041] In this embodiment, as Figure 3 As shown, the chair frame rotating device also includes a support member 70, which is fixedly connected to the support member 10 and the first gear 31. The support member 70 is positioned below the first gear 31, so that the first gear 31 and the support member 10 form a predetermined distance in the vertical direction, thereby raising the first gear 31 and facilitating its meshing with the second gear 32. The support member 70 can be formed as a block structure and assembled and fixed to the first gear 31 and the support member 10 using fasteners such as screws or bolts.

[0042] Furthermore, in this embodiment, such as Figures 1 to 4 As shown, the rotating component 20 is provided with a first support 11 and a second support 12 for connecting the dental chair frame. The first support 11 and the second support 12 are installed on the rotating component 20 at intervals in the horizontal direction. Optionally, the first support 11 is provided with a strip-shaped rotating rod, and the second support 12 can be formed by splicing multiple plate-shaped structures, as long as the installation requirements of the dental chair frame are met. An installation space 121 is formed at the bottom of the second support 12, and at least part of the driving component 40 is disposed in the installation space 121 to limit the installation position of the driving component 40 and to provide a certain degree of protection for the driving component 40. According to the present invention, the rotating component 20 and the supporting component 10 are arranged vertically in the chair frame rotating device, and the chair frame is mounted on the rotating component 20; the gear set includes a first gear 31 and a second gear 32 that mesh with each other; the first gear 31 is fixedly mounted on the supporting component 10; the driving component 40 is fixed relative to the rotating component 20; the driving component 40 has an output shaft 41, and the second gear 32 is mounted on the output shaft 41, so that the second gear 32 is fixed relative to the rotating component 20, and the first gear 31 rotates in cooperation with the rotating component 20; the output shaft 41 has a first rotation direction and a second rotation direction that are opposite to each other, so as to drive the rotating component 20 to rotate relative to the supporting component 10 along the first rotation direction or the second rotation direction, thereby realizing the use of the driving component 40 to drive the chair frame to rotate in the horizontal direction, so as to realize the entry and exit of people from multiple directions and meet different usage needs.

[0043] The dental chair provided by this utility model includes the above-mentioned chair frame rotating device, and thus has all the beneficial effects of the chair frame rotating device, which will not be repeated here.

[0044] 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. A chair frame rotating device, characterized in that, include: Support components; A rotating component is arranged vertically with the supporting component, and the dental chair frame is mounted on the rotating component; The gear set includes a first gear and a second gear that mesh with each other; the first gear is fixedly mounted on the support member. A driving component is fixed relative to the rotating component; the driving component has an output shaft, and a second gear is mounted on the output shaft such that the second gear is fixed relative to the rotating component, and the first gear is rotatably engaged with the rotating component; The output shaft has a first rotation direction and a second rotation direction that are opposite to each other, so as to drive the rotating member to rotate relative to the support member along the first rotation direction or the second rotation direction.

2. The chair frame rotating device according to claim 1, characterized in that, The rotation axes of the first gear and the second gear extend vertically; the gear set is disposed below the rotating member, and the rotating member has a clearance for the output shaft to pass through.

3. The chair frame rotating device according to claim 1, characterized in that, The diameter of the first gear is larger than the diameter of the second gear; And / or, the number of teeth of the first gear is greater than the number of teeth of the second gear.

4. The chair frame rotating device according to claim 1, characterized in that, The support member has a first limiting part and a second limiting part, which together form a rotation space in the horizontal direction; the rotating member has a limiting post extending into the rotation space; when the driving member drives the rotating member to rotate along the first rotation direction or the second rotation direction, the limiting post can abut against the first limiting part or the second limiting part.

5. The chair frame rotating device according to claim 4, characterized in that, Also includes: A detection element is disposed on the first limiting part and the second limiting part to detect the position of the limiting post in the rotation space; Alternatively, the detection element can be mounted on the drive element to detect the torque output by the drive element.

6. The chair frame rotating device according to claim 1, characterized in that, The rotating component is disposed above the supporting component; in the vertical direction, the gear set is sandwiched between the rotating component and the supporting component; the rotating component has a through hole, and the side of the first gear facing the rotating component has a protrusion that extends into the through hole.

7. The chair frame rotating device according to claim 6, characterized in that, The protrusion extends out of the through hole, such that a portion of the protrusion protrudes from the side of the rotating member facing away from the support member; The chair frame rotating device further includes: The support member is sleeved on the protrusion and fits against the surface of the rotating member; A locking element is disposed above the support member and is threadedly engaged with the portion of the protrusion that extends out of the through hole.

8. The chair frame rotating device according to claim 1, characterized in that, Also includes: A support member is fixedly connected to the support member and the first gear. The support member is disposed below the first gear, such that the first gear and the support member form a predetermined distance in the vertical direction.

9. The chair frame rotating device according to claim 1, characterized in that, The rotating component is provided with a first support seat and a second support seat for connecting the dental chair frame; The bottom of the second support has an installation space, and at least a portion of the drive component is disposed in the installation space.

10. A dental chair, characterized in that, Includes the chair frame rotating device according to any one of claims 1 to 9.

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