Dental equipment shell and dental chair

Abstract

The utility model relates to the technical field of medical instruments, in particular to a dental equipment shell and a dental chair, and the dental equipment shell is characterized in that an annular side wall shell is arranged at the bottom of a top shell; the telescopic shell set is located below the top shell and comprises at least one telescopic shell in sliding connection with the side wall shell, each telescopic shell comprises a shell body and a detachable panel, and the connecting assembly is arranged in the telescopic shell and comprises a connecting piece arranged on the shell body and a matching piece arranged on the detachable panel. A clamping groove and a fastening hole are formed in the connecting piece; a clamping protrusion capable of stretching into the clamping groove is formed on the matching piece, and the first fastening piece penetrates through the fastening hole to abut against the matching piece. According to the dental equipment shell disclosed by the utility model, the telescopic shell can be conveniently disassembled and assembled, and the connecting assembly is arranged in the telescopic shell, so that the attractiveness of the dental equipment shell is improved, and the maintenance work of a dental chair is further facilitated.

Description

Dental equipment housing and dental chair Technical Field

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

[0002] A dental chair, also known as a dental treatment chair, includes a main unit, dental turbine handpiece, water and air system, control circuitry, auxiliary equipment, and the chair itself, and is used to treat dental diseases. Traditional three-fold dental chairs often use exposed screws directly fixed to the frame, requiring at least six screws to be exposed on the surface, affecting the overall aesthetics of the device. Furthermore, assembly requires aligning and tightening multiple screws one by one, making assembly inconvenient and time-consuming. Disassembling the outer shell requires completely removing all screws, which can easily lead to stripped or lost screws, increasing the inconvenience of maintenance and repair. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a dental device housing and dental chair to solve the problem that the existing dental chair housing is fixed with multiple screws, which makes disassembly and assembly inconvenient and affects the aesthetics.

[0004] The first aspect of this utility model provides a dental device housing, wherein the dental device housing comprises:

[0005] The top shell has an annular sidewall shell at the bottom;

[0006] A telescopic shell assembly, located below the top shell, includes at least one telescopic shell slidably connected to the side wall shell. When multiple telescopic shells are provided, the multiple telescopic shells are nested and slidably connected to each other. The telescopic shell includes a shell body and a detachable panel. The shell body is formed into an annular structure with an opening, and the detachable panel closes the opening on the shell body.

[0007] A connecting component is disposed inside the telescopic housing. The connecting component includes a connector, a first fastener, and a mating component. The connector is disposed on the housing body and has a slot and a fastening hole. The mating component is disposed on the detachable panel and has a protrusion that can extend into the slot. The first fastener passes through the fastening hole and abuts against the mating component.

[0008] Preferably, both the connector and the mating member are formed as strip structures, the slot and the fastening hole are respectively disposed at both ends of the connector in the length direction, the latch protrusion protrudes outward from one end of the mating member in the length direction, and the first fastener abuts against the other end of the mating member in the length direction.

[0009] Preferably, the strip structure extends vertically, and the sidewall of the connector has a first connecting portion and a second connecting portion protruding toward the mating part. The first connecting portion is disposed above the second connecting portion, the fastening hole penetrates the first connecting portion, and the slot is formed by recessing inward from the top of the second connecting portion.

[0010] Preferably, the mating part is formed as an inclined fastening portion on the side facing the first fastener, and one end of the first fastener passing through the fastening hole abuts against the fastening portion.

[0011] Preferably, the sidewall housing includes a fixed part and a detachable part, the fixed part is formed as an annular structure with an opening, the detachable part closes the opening on the fixed part, and the detachable part and the detachable panel are disposed on the same side of the dental device housing;

[0012] The dental device housing also includes:

[0013] The second fastener has a first connecting hole on the detachable part and a second connecting hole on the fixed part. The second fastener passes through the first connecting hole and the second connecting hole in sequence, so that the detachable part is fixed to the fixed part.

[0014] Preferably, the first connecting hole is formed as a countersunk hole, so that the second fastener after installation does not protrude from the outer surface of the detachable part.

[0015] Preferably, the top of the top shell is provided with a wall panel, and the top of the detachable part is formed with a protruding connecting protrusion, and the second fastener fixes the connecting protrusion to the wall panel.

[0016] Preferably, the telescopic housing and the sidewall housing together form a receiving cavity. When the top shell slides in a direction away from or close to the base, at least a portion of the telescopic housing expands relative to or is nested within the sidewall housing to increase or decrease the volume of the receiving cavity.

[0017] Preferably, the detachable panel has inwardly folded flanges at both the top and bottom ends, and the flanges are attached to the inner wall of the telescopic housing.

[0018] A second aspect of this invention provides a dental chair, comprising the dental device housing described in any of the above technical solutions.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The dental device housing of this utility model has an annular sidewall housing at the bottom of the top shell; a telescopic housing assembly is located below the top shell and includes at least one telescopic housing slidably connected to the sidewall housing, allowing the dental device housing to move with the dental chair and be in an unfolded or folded state. When multiple telescopic housings are provided, they are nested and slidably connected to each other. The telescopic housing includes a housing body and a detachable panel. The housing body is formed into an annular structure with an opening, and the detachable panel closes the opening on the housing body. The connecting assembly includes a connector, a mating part, and a first fastener. The connector is provided on the housing body and has a slot and a fastening hole. The mating part is provided on the detachable panel and has a protrusion that can extend into the slot. The first fastener passes through the fastening hole and abuts against the mating part. Thus, the housing body and the detachable panel are fixed by the snap-fit ​​of the mating part and the connector, and the abutment between the fastener and the mating part, making it easy to assemble and disassemble the telescopic housing. The connecting assembly is located inside the telescopic housing, improving the aesthetics of the dental device housing, thereby facilitating the maintenance of the dental chair and enhancing the appearance of the dental chair, meeting the needs and preferences of users.

[0021] 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

[0022] 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.

[0023] Figure 1 is a structural schematic diagram of the dental device housing provided in the embodiment of this utility model in the unfolded state;

[0024] Figure 2 is an exploded view of the dental device housing provided in the embodiment of this utility model in its unfolded state;

[0025] Figure 3 is a cross-sectional view of the dental device housing provided in the embodiment of this utility model in the unfolded state;

[0026] Figure 4 is a schematic diagram of the structure of the connecting component in the dental device housing provided in an embodiment of the present invention;

[0027] Figure 5 is a structural schematic diagram of the dental device housing provided in the embodiment of this utility model in a folded state;

[0028] Figure 6 is a cross-sectional view of the dental device housing provided in the embodiment of this utility model in a folded state.

[0029] Icons: 10-Base; 20-Top shell; 21-Side wall shell; 211-Fixing part; 212-Detachable part; 2101-First connecting hole; 2102-Second connecting hole; 2121-Connecting protrusion; 22-Wall panel; 30-Telescopic shell assembly; 31-First telescopic shell; 32-Second telescopic shell; 301-Shell body; 302-Detachable panel; 303-Flanged edge; 40-Connector; 401-First connecting part; 402-Second connecting part; 41-Slot; 50-First fastener; 60-Mating part; 61-Snap protrusion; 62-Fastening part; 80-Receiving cavity; 90-Control switch. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] A dental device housing according to a first aspect of the present invention includes a top shell 20, a telescopic shell assembly 30, and a connecting component.

[0040] The specific structure of the above-described components of the dental device housing according to this embodiment will be described below.

[0041] In this embodiment, as shown in Figures 1 to 6, the base 10 is formed as a plate structure, and the dental device housing is installed on the base 10. Specifically, the top shell 20 is disposed above the base 10, and the bottom of the top shell 20 is provided with an annular side wall shell 21; the telescopic shell assembly 30 is located below the top shell 20 and is disposed between the base 10 and the top shell 20. The telescopic shell assembly 30 and the side wall shell 21 together form the side wall of the dental device housing.

[0042] In this embodiment, as shown in Figures 1 to 6, the telescopic shell assembly 30 includes at least one telescopic shell slidably connected to the side wall shell 21, so that the dental equipment shell can move with the dental chair and be in an unfolded or folded state; specifically, the telescopic shell is formed as an annular structure nested with the side wall shell 21, so that when the telescopic shell and the side wall shell 21 are fitted together, they are in a folded state as shown in Figures 5 and 6, forming a compact and neat appearance, and when the telescopic shell extends out of the side wall shell 21, it is in an unfolded state as shown in Figures 1 to 4.

[0043] More specifically, when multiple telescopic housings are provided, they are nested and slidably connected to each other, with the lowest telescopic housing fixedly connected to the base 10. The height dimensions of the multiple telescopic housings can be the same or different. For example, as shown in Figures 1 to 6, there are two telescopic housings: a first telescopic housing 31 and a second telescopic housing 32. The first and second telescopic housings 31 and 32 are nested together to form a sliding connection. The end of the first telescopic housing 31 away from the second telescopic housing 32 is fixed to the base 10, and the end of the second telescopic housing 32 away from the first telescopic housing 31 is slidably connected to the side wall housing 21. Thus, when the dental equipment shell is in the unfolded state, the side wall housing 21, the second telescopic housing 32, and the first telescopic housing 31 are arranged sequentially from top to bottom, and when the dental equipment shell is in the folded state, the side wall housing 21, the second telescopic housing 32, and the first telescopic housing 31 are nested layer by layer. When there is only one telescopic housing in the telescopic housing group 30, that telescopic housing is fixed to the base 10. It should be noted that the number of telescopic housings can be set according to the height adjustment range of the dental chair.

[0044] In this embodiment, the telescopic housing is embedded inside the side wall housing 21, so that when the dental device housing is folded, all the telescopic housings are hidden inside the side wall housing 21, improving aesthetics and providing a certain degree of dust and water resistance. In other alternative embodiments, the telescopic housing is fitted onto the outer wall of the side wall housing 21, which also enables the dental device housing to extend and retract.

[0045] In this embodiment, as shown in FIG3, the upper and lower ends of the detachable panel 302 are provided with inwardly folded flanges 303. The flanges 303 are attached to the inner wall of the telescopic housing, which not only increases the strength and stability of the structure, but also makes the upper and lower edges of the detachable panel 302 smoother, reducing potential damage during assembly. Preferably, the upper edge and / or lower edge of the housing body 301 are also provided with flanges 303, making the surface of the telescopic housing flat and more aesthetically pleasing. In addition, the lower edge of the side wall housing 21 can also be provided with flanges 303.

[0046] In this embodiment, as shown in Figures 1 to 6, the telescopic housing and the side wall housing 21 together form a receiving cavity 80. The lifting device for driving the dental chair is installed in the receiving cavity 80. The lifting device can be a telescopic motor, a telescopic cylinder, or a motor screw, or any device that can drive the seat of the dental chair to move up and down. When the lifting device moves upward, when the top shell 20 slides away from the base 10, at least part of the telescopic housing unfolds relative to the side wall housing 21 to increase the volume of the receiving cavity 80; or when the lifting device moves downward, when the top shell 20 slides closer to the base 10, at least part of the telescopic housing is nested in the side wall housing 21 to reduce the volume of the receiving cavity 80.

[0047] More specifically, the telescopic housing includes a housing body 301 and a detachable panel 302. The housing body 301 is formed into an annular structure with an opening, such that the housing body 301 is a structure formed by bending a plate-like structure into a C-shape or U-shape, etc. The detachable panel 302 closes the opening on the housing body 301, so that after the detachable panel is installed on the housing body 301, it can form a closed annular structure in the shape of a circle, polygon, or ellipse, etc.

[0048] In this embodiment, as shown in Figures 2 to 4, the housing body 301 and the detachable panel 302 are detachably connected by a connecting component. The connecting component is located inside the telescopic housing, which improves the aesthetics of the dental equipment housing and avoids excessive exposed screw structures that may rust or be bumped by people. This facilitates the maintenance of the dental chair and also improves the appearance of the dental chair product, meeting the needs and preferences of users.

[0049] Specifically, as shown in Figures 2 to 4, the connecting assembly includes a connector 40, a first fastener 50, and a mating component 60. The connector 40 is disposed on the housing body 301 and has a slot 41 and a fastening hole. The slot 41 is a groove structure, and the fastening hole is preferably a threaded hole. The first fastener 50 is a screw or bolt. The mating component 60 is disposed on the detachable panel 302 and has a protrusion 61 that can extend into the slot 41. The first fastener 50 passes through the fastening hole and abuts against the mating component 60. Thus, the connection between the housing body 301 and the... When assembling the detachable panel 302, the protrusion 61 can be inserted into the slot 41 to form a pre-position, and then the first fastener 50 can be screwed to abut against the mating part 60. This achieves the locking and fixing of the connecting part 40 and the mating part 60, thereby connecting the housing body 301 and the detachable panel 302. Similarly, when it is necessary to remove the detachable panel 302 from the housing body 301, simply screw the first fastener 50 in the opposite direction to loosen its abutment against the mating part 60, and then separate the protrusion 61 from the slot 41, making the telescopic housing easy to assemble and disassemble.

[0050] Preferably, as shown in Figure 2, each telescopic housing is provided with two sets of connecting components, and the two connectors 40 in the two sets of connecting components are respectively provided on the inner wall of the opening of the housing body 301, so as to ensure that the housing body 301 and the detachable panel 302 are installed stably and firmly after assembly.

[0051] Further, in a preferred embodiment, as shown in Figures 2 to 4, both the connector 40 and the mating member 60 are formed as strip structures; preferably, the connecting member 40 and the mating member 60 extend in the same direction, and the depth direction of the slot 41 is the same as the length direction of the connecting member 40. The slot 41 and the fastening hole are respectively provided at both ends of the connecting member 40 in the length direction, so that the slot 41 and the fastening hole are arranged opposite to each other. The locking protrusion 61 protrudes outward from one end of the mating member 60 in the length direction, and the first fastener 50 abuts against the other end of the mating member 60 in the length direction, thereby achieving that when the first fastener 50 abuts against the mating member 60, a force can be applied to the locking protrusion 61 to embed it into the slot 41, thereby improving the locking effect.

[0052] Furthermore, in this embodiment, as shown in FIG4, both the strip-shaped connector 40 and the mating member 60 extend vertically. The sidewall of the connector 40 forms a first connecting portion 401 and a second connecting portion 402 protruding toward the mating member 60. The first connecting portion 401 and the second connecting portion 402 are formed into a block structure and can protrude toward the direction where the detachable panel 302 is provided. The first connecting portion 401 is located above the second connecting portion 402. The first connecting portion 401 and the second connecting portion 402 can be located at both ends in the length direction of the connector 40. The fastening hole penetrates the first connecting portion 401 from top to bottom. The slot 41 is formed by the inward recess from the top of the second connecting portion 402, so that the edge of the slot 41 protrudes upward to limit the horizontal position of the protrusion 61, ensuring that the protrusion 61 can be accurately positioned when inserted, realizing the tight fit and stable fixation of the connector 40 and the mating member 60, and preventing it from falling off. The fastener is located above the slot 41 for easy assembly or disassembly by personnel.

[0053] In a preferred embodiment, as shown in Figures 3 and 4, the side of the mating member 60 facing the first fastener 50 is formed as an inclined fastening portion 62. The fastening portion 62 has an inclined structure, and the inclination direction of the fastening portion 62 is such that the side of the mating member 60 closer to the connector 40 is higher than the side of the mating member 60 farther from the connector 40. One end of the first fastener 50 passing through the fastening hole abuts against the fastening portion 62, thus ensuring that the mating member 60 is pressed between the groove and the first fastener 50 and will not wobble.

[0054] In this embodiment, as shown in Figures 1 to 6, the sidewall housing 21 includes a fixed part 211 and a detachable part 212. The fixed part 211 is formed as an annular structure with an opening. The fixed part 211 is a structure formed by bending a plate-like structure into a C-shape or U-shape, etc. The detachable part 212 is formed as a plate-like structure. The detachable part 212 closes the opening on the fixed part 211. The detachable part 212 and the detachable panel 302 are located on the same side of the dental device housing, so that the structural layout of the dental device housing is regular. After the detachable part 212 is removed, the first fastener 50 can be exposed, which is convenient for disassembly.

[0055] In this embodiment, as shown in Figures 1 and 2, the dental device housing also includes a second fastener, which can be a screw or a bolt. The detachable part 212 has a first connecting hole 2101, and the fixed part 211 has a second connecting hole 2102. The second fastener passes through the first connecting hole 2101 and the second connecting hole 2102 in sequence. The second connecting hole 2102 is a threaded hole, and the first connecting hole 2101 can be a smooth hole or a threaded hole. The detachable part 212 is fixed to the fixed part 211 by the connection of the second fastener. Under normal circumstances, only two second fasteners are needed to ensure the firm assembly of the fixed part 211 and the detachable part 212. Since the telescopic housing in this application is assembled by a connecting component and the connecting component is located inside the receiving cavity 80, only a few second fasteners are exposed on the dental device housing, which improves the overall aesthetics.

[0056] Furthermore, in a preferred embodiment, as shown in FIG2, the first connecting hole 2101 is formed as a countersunk hole, so that the installed second fastener does not protrude from the outer surface of the detachable part 212, thereby ensuring that the second fastener will not collide with the person walking, thus achieving both aesthetics and safety performance.

[0057] Further, in this embodiment, as shown in Figures 1 to 6, a wall panel 22 is provided on the top of the top shell 20. The wall panel 22 is a U-shaped or C-shaped structure with an opening, formed by bending a plate-like structure. A partially detachable portion 212 can close at least part of the opening of the wall panel 22. A protruding connecting protrusion 2121 is formed on the top of the detachable portion 212. Two connecting protrusions 2121 can be provided, and the two connecting protrusions 2121 correspond to the edges of the wall panel 22 respectively. A second fastener fixes the connecting protrusions 2121 to the wall panel 22. Specifically, the connecting protrusions 2121 are also provided with the first connecting hole 2101 as described above, and the wall panel 22 is provided with the second connecting hole 2102 as described above.

[0058] It should be noted that, as shown in Figures 1 and 2 of this application, the number of second fasteners is four, which can meet the requirements of a stable and tight assembly of the top shell 20. This makes the number of exposed fasteners on the dental device of this application less than the number of at least six on the existing dental chair shell, improving aesthetics and making disassembly and assembly convenient.

[0059] Furthermore, in this embodiment, as shown in Figures 1 and 5, the dental device housing also includes a control switch 90 disposed on the base 10. The control switch 90 can be communicatively connected to the lifting device described above, thereby controlling the upward or downward movement of the lifting device, causing the telescopic housing assembly 30 to unfold or fold accordingly. Optionally, the control switch 90 can also be used to control other components or devices on the dental chair, such as adjusting the reclining angle of the chair or controlling the water flow.

[0060] According to the dental device housing of this utility model, a ring-shaped sidewall housing is provided at the bottom of the top shell; a telescopic housing assembly is located below the top shell and includes at least one telescopic housing slidably connected to the sidewall housing, so that the dental device housing can move with the dental chair and be in an unfolded or folded state. When multiple telescopic housings are provided, the multiple telescopic housings are nested and slidably connected to each other; the telescopic housing includes a housing body and a detachable panel, the housing body is formed into a ring structure with an opening, and the detachable panel closes the opening on the housing body; the connecting assembly includes a connector, a mating part, and a first fastener, the connector being disposed on the housing body. The main body has a slot and a fastening hole; the mating part is set on the detachable panel and has a protrusion that can extend into the slot. The first fastener passes through the fastening hole and abuts against the mating part. In this way, the main body of the shell and the detachable panel are fixed by the snap-fit ​​of the mating part and the fastener and the mating part, so that the telescopic shell can be easily disassembled and assembled. The connecting component is set inside the telescopic shell, which improves the appearance of the dental equipment shell and avoids the destruction of the overall appearance and simple aesthetics by too many screw structures. This facilitates the maintenance of the dental chair and also improves the appearance of the dental chair product, satisfying the user's aesthetics and preferences.

[0061] The dental chair provided by this utility model includes the aforementioned dental equipment housing, and thus has all the beneficial effects of a dental equipment housing, which will not be repeated here.

[0062] 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 dental device housing, characterized in that, The dental device housing includes: a top shell with an annular sidewall shell at the bottom; a telescopic shell assembly located below the top shell, the telescopic shell assembly including at least one telescopic shell slidably connected to the sidewall shell, and when multiple telescopic shells are provided, the multiple telescopic shells are nested and slidably connected to each other; the telescopic shell includes a shell body and a detachable panel, the shell body being formed as an annular structure with an opening, the detachable panel closing the opening on the shell body; a connecting assembly disposed inside the telescopic shell, the connecting assembly including a connector, a first fastener, and a mating member; the connector is disposed on the shell body and has a slot and a fastening hole; the mating member is disposed on the detachable panel and has a protrusion capable of extending into the slot, the first fastener passing through the fastening hole and abutting against the mating member.

2. The dental device housing according to claim 1, characterized in that, Both the connector and the mating member are formed into strip-shaped structures. The slot and the fastening hole are respectively located at both ends of the connector in the length direction. The locking protrusion protrudes outward from one end of the mating member in the length direction. The first fastener abuts against the other end of the mating member in the length direction.

3. The dental device housing according to claim 2, characterized in that, The strip structure extends vertically, and the sidewall of the connector has a first connecting portion and a second connecting portion protruding toward the mating part. The first connecting portion is located above the second connecting portion, the fastening hole passes through the first connecting portion, and the slot is formed by the top of the second connecting portion recessed inward.

4. The dental device housing according to claim 1, characterized in that, The mating part is formed as an inclined fastening portion on the side facing the first fastener, and one end of the first fastener passing through the fastening hole abuts against the fastening portion.

5. The dental device housing according to claim 1, characterized in that, The sidewall housing includes a fixed part and a detachable part. The fixed part is formed as an annular structure with an opening. The detachable part closes the opening on the fixed part. The detachable part and the detachable panel are located on the same side of the dental device housing. The dental device housing further includes a second fastener, wherein the detachable part has a first connecting hole and the fixed part has a second connecting hole, and the second fastener passes through the first connecting hole and the second connecting hole in sequence, so that the detachable part is fixed to the fixed part.

6. The dental device housing according to claim 5, characterized in that, The first connecting hole is countersunk, so that the second fastener does not protrude from the outer surface of the detachable part after installation.

7. The dental device housing according to claim 5, characterized in that, The top of the top shell is provided with a wall panel, and the top of the detachable part has a protruding connecting protrusion, and the second fastener fixes the connecting protrusion to the wall panel.

8. The dental device housing according to claim 1, characterized in that, The telescopic housing and the sidewall housing together form a receiving cavity. When the top shell slides away from or towards the base, at least a portion of the telescopic housing expands or is nested within the sidewall housing relative to it, thereby increasing or decreasing the volume of the receiving cavity.

9. The dental device housing according to claim 1, characterized in that, The detachable panel has inwardly folded flanges at both the top and bottom ends, and the flanges are attached to the inner wall of the telescopic housing.

10. A dental chair, characterized in that, The dental device housing includes any one of claims 1 to 9.

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