A multi-stage rotary armrest for a dental chair

Abstract

The utility model relates to medical equipment technical field provides a kind of multi-stage rotating handrail for dental chair, including handrail main body, handrail main body is connected with dental chair main body rotation, handrail main body includes bending part and handrail part, handrail part is connected with bending part rotation through pivot part, bending part is connected with dental chair main body through adapter seat;Compared with prior art, when needing to store handrail main body, in addition to being turned over under the action of adapter seat, handrail main body can also be folded twice under the action of pivot part, or the angle of handrail part is adjusted twice;Folded handrail main body only occupies a small part of position on the side of dental chair main body, avoids the handrail of storage tripping medical staff, reduces security risk.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to a multi-stage rotating armrest for a dental chair. Background Technology

[0002] In traditional dental chairs, the armrests are usually fixed or flip-up. The armrests of dental chairs with fixed armrests cannot be adjusted, which makes it very inconvenient for patients to get in and out of the dental chair. The armrests of dental chairs with flip-up armrests can be flipped up freely. Under normal circumstances, the armrests can be flipped down to hide them, reducing the interference for patients when getting in and out of the dental chair.

[0003] Most existing dental chairs feature flip-up armrests, but the armrests themselves cannot be folded; they can only rotate via a rotating mechanism at the connecting seat. When storing them, patients or healthcare professionals need to press the armrests down significantly. Although the armrests are tucked under the chair body, they are still quite bulky, posing a tripping hazard to healthcare professionals walking around the chair. Furthermore, existing armrests lack multi-stage adjustment during rotation, failing to flexibly adjust the armrest angle according to different patient or operational needs, thus affecting comfort and ease of use. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage rotating armrest for dental chairs, which aims to solve the problems of existing dental chair armrests having a single adjustable angle and safety hazards when stored.

[0005] To achieve the above objectives, this utility model provides a multi-stage rotating armrest for a dental chair, including an armrest body rotatably connected to the dental chair body. The armrest body includes a bent portion and an armrest portion, which are rotatably connected via a pivot. The pivot allows the armrest portion to bend and fold close to the bent portion. The bent portion is connected to the dental chair body via an adapter. The adapter allows the bent portion and armrest portion to fold and be stored on the side of the dental chair body.

[0006] Furthermore, the armrest includes a base shell and an armrest pad, which are detachably connected. A cavity is provided between the armrest pad and the base shell, and a lever and a pressure plate are installed in the cavity. Both the pressure plate and the lever are installed in the base shell through soft rubber pillars. A pressure post is provided on the pressure plate, which is used to actuate the lever. A one-way locking plate is provided at the end of the lever, and a fixed locking plate is provided in the rotating shaft. The fixed locking plate and the one-way locking plate are engaged. A locking spring is provided in the rotating shaft. One end of the locking spring abuts against the rotating shaft, and the other end of the locking spring abuts against the one-way locking plate.

[0007] Furthermore, a limiting plate is provided in the bottom shell, and limiting grooves are provided on both the paddle and the pressure plate, allowing the limiting grooves to slide on the limiting plate.

[0008] Furthermore, buttons are provided on both sides of the bottom shell, and the buttons are connected to the pressure plate.

[0009] Furthermore, the bent part is fixedly connected to the adapter seat, which has an adapter hole. The adapter hole contains a connecting post, a limiting plate, and a limiting spring. The connecting post has a limiting seat, and both the limiting seat and the limiting plate have meshing teeth. The adapter hole has a limiting groove, and the limiting plate has a limiting protrusion that fits into the limiting groove. Both ends of the adapter hole have sleeves, and the sleeve closer to the dental chair body has an opening for the connecting post to pass through. The limiting spring is fitted onto the connecting post, with one end of the limiting spring abutting against the limiting plate and the other end abutting against the sleeve furthest from the dental chair body.

[0010] Furthermore, the limiting seat is provided with an angle protrusion, and the limiting plate is provided with a deflection groove, with the angle protrusion and the deflection groove fitting together.

[0011] Furthermore, the rotating shaft also includes end caps on both sides and a central shaft column in the middle. The end caps are fixedly connected to the bottom shell, and the central shaft column is fixedly connected to the bending part.

[0012] Furthermore, a limit post is provided in the central column, the limit post is rotatably connected to the central column, and the two ends of the limit post abut against the end cover respectively. The end cover and the limit post are provided with through holes, and locking studs are installed in the through holes. The locking studs are used to lock the end cover and the central column.

[0013] The present invention provides a multi-stage rotating armrest for dental chairs. Compared with the prior art, when the armrest body needs to be stored, in addition to flipping it under the action of the adapter, the armrest body can also be folded a second time under the action of the pivot, or the armrest body can be adjusted a second time. The folded armrest body will only occupy a small part of the side of the dental chair body, avoiding tripping medical staff and reducing safety hazards. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a three-dimensional view of the folded form of this utility model;

[0017] Figure 4 This is a front view of the folded form of this utility model;

[0018] Figure 5 yes Figure 4 Sectional view at point AA;

[0019] Figure 6 This is a perspective view of the armrest portion in this utility model;

[0020] Figure 7 This is an exploded view of the armrest portion of this utility model;

[0021] Figure 8 yes Figure 7 A magnified view of part A in the middle;

[0022] Figure 9 This is an exploded view of the adapter in this utility model;

[0023] Figure 10 This is a three-dimensional sectional view of the adapter in this utility model;

[0024] Figure 11 This is a perspective view of the connecting column in this utility model;

[0025] Figure 12 This is a three-dimensional view of the pressure plate and the lever in this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] in;

[0028] 1. Armrest; 10. Base shell; 100. Limiting plate; 101. Button; 102. One-way locking plate; 11. Paddle; 110. Limiting groove; 12. Pressure plate; 120. Pressure column; 13. Soft rubber column;

[0029] 2. Bending section;

[0030] 3. Rotating shaft; 30. End cap; 31. Central shaft column; 32. Locking spring; 33. Limiting post; 34. Fixing plate; 35. Locking stud;

[0031] 4. Adapter; 40. Adapter hole; 41. Connecting post; 42. Limiting plate; 420. Deflection groove; 43. Limiting spring; 44. Limiting groove; 45. Limiting protrusion; 46. Enclosure; 47. Limiting seat; 470. Deflection protrusion; 48. Tooth. Detailed Implementation

[0032] The present invention will be described in detail below with reference to specific embodiments.

[0033] In this utility model, unless otherwise explicitly specified and limited, when terms such as "set in," "connected," or "linked" appear, these terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through one or more intermediate media. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The directional terms appearing in this utility model are for the purpose of better describing the characteristics of the features and the relationships between them. It should be understood that when the placement direction of this utility model changes, the direction of the characteristics of the features and the relationships between them also changes accordingly. Therefore, directional terms do not constitute an absolute limitation on the characteristics of the features and the relationships between them in space, but only a relative limitation.

[0034] like Figures 1 to 12 As shown, this utility model provides a multi-stage rotating armrest for a dental chair, including an armrest body, which is rotatably connected to the dental chair body. The armrest body includes a bending part 2 and an armrest part 1. The armrest part 1 and the bending part 2 are rotatably connected by a pivot part 3. The pivot part 3 can cause the armrest part 1 to bend and come close to the bending part 2. The bending part 2 is connected to the dental chair body through an adapter 4. The adapter 4 can drive the close-fitting bending part 2 and armrest part 1 to fold and store on the side of the dental chair body.

[0035] In this embodiment, the armrest part 1 includes a bottom shell 10 and an armrest pad. The bottom shell 10 and the armrest pad are detachably connected. A cavity is provided between the armrest pad and the bottom shell 10. A paddle 11 and a pressure plate 12 are installed in the cavity. Both the pressure plate 12 and the paddle 11 are installed in the bottom shell 10 through soft rubber pillars 13. A pressure post 120 is provided on the pressure plate 12, which is used to paddle 11. A one-way locking plate 102 is provided at the end of the paddle 11. A fixing plate 34 is provided in the rotating shaft part 3. The fixing plate 34 meshes with the one-way locking plate 102. A locking spring 32 is provided in the rotating shaft part 3. One end of the locking spring 32 abuts against the rotating shaft part 3, and the other end of the locking spring 32 abuts against the one-way locking plate 102.

[0036] Through the above design scheme, the meshing fixed plate 34 and one-way plate 102 can restrict the rotation direction of the armrest 1, ensuring that the armrest 1 can only rotate in the set direction. When it is necessary to rotate the armrest 1 in the opposite direction, the user only needs to press the pressure plate 12. The pressure post 120 on the pressure plate 12 drives the lever 11 to tilt. The tilted lever 11 will cause the one-way plate 102 to move away from the fixed plate 34. The one-way plate 102 that is moved away from the fixed plate 34 is no longer restricted. At this time, the rotation of the armrest 1 is unrestricted, which makes it convenient for the user to adjust the angle of the armrest 1 or bend the armrest 1 under the dental chair body. When adjusted to a suitable position, the user only needs to release the pressure plate 12. Under the action of the locking spring 32, the one-way plate 102 re-engages with the fixed plate 34, so that the armrest 1 re-enters the state where it can only be lifted up and cannot be pressed down. The soft rubber post 13 used to connect the paddle 11 to the base shell 10 and the pressure plate 12 to the base shell 10 is made of a soft material. When the paddle 11 and the pressure plate 12 are pressed together, the soft rubber post 13 connecting the paddle 11 and the pressure plate 12 will bend slightly to ensure that the paddle 11 and the pressure plate 12 can tilt.

[0037] Under the action of the pivot part 3, the handrail part 1 and the bending part 2 can be bent, reducing the space occupied by the handrail body. When the handrail body needs to be stored, the user only needs to rotate the bending part 2 to tilt the handrail body, and then release the locking of the one-way card plate 102 and the fixed card plate 34 through the pressure plate 12, so that the handrail part 1 and the bending part 2 can be bent, making it easy to fold and store. The space occupied by the folded handrail body will be greatly reduced, and the probability of medical staff tripping when walking can also be reduced, thus improving safety.

[0038] In this embodiment, a limiting plate 100 is provided in the bottom shell 10, and a limiting groove 110 is provided on both the paddle 11 and the pressure plate 12. The limiting groove 110 can slide on the limiting plate 100.

[0039] Through the above design scheme, the limiting plate 100 and the limiting groove 110 can limit the movement range of the paddle 11 and the pressure plate 12, so as to prevent the paddle 11 and the pressure plate 12 from shifting during operation.

[0040] In this embodiment, buttons 101 are provided on both sides of the bottom shell 10, and the buttons 101 are connected to the pressure plate 12. The user can press the pressure plate 12 through the button 101, so that the pressure plate 12 drives the lever 11 to tilt.

[0041] In this embodiment, the bent part 2 is fixedly connected to the adapter seat 4. The adapter seat 4 is provided with an adapter hole 40, and the adapter hole 40 is provided with a connecting post 41, a limiting plate 42 and a limiting spring 43. The connecting post 41 is provided with a limiting seat 47, and both the limiting seat 47 and the limiting plate 42 are provided with meshing teeth 48. The adapter hole 40 is provided with a limiting groove 44, and the limiting plate 42 is provided with a limiting protrusion 45, which fits into the limiting groove 44. Both ends of the adapter hole 40 are provided with a sleeve 46, and the sleeve 46 near the dental chair body is provided with an opening for the connecting post 41 to pass through. The limiting spring 43 is sleeved on the connecting post 41, with one end of the limiting spring 43 abutting against the limiting plate 42 and the other end of the limiting spring 43 abutting against the sleeve 46 away from the dental chair body.

[0042] Through the above design scheme, the teeth 48 on the limiting seat 47 and the limiting plate 42 can position the rotation angle. Under the action of the limiting groove 44 and the limiting protrusion 45, the limiting plate 42 can rotate together with the rotation of the bending part 2. Under the action of the limiting spring 43, the limiting seat 47 abuts against the limiting plate 42. As the bending part 2 rotates, the teeth 48 on the limiting seat 47 and the limiting plate 42 will rub against each other to prevent the armrest body from automatically deflecting. When it is necessary to rotate the bending part 2, the user only needs to use a little more force and rotate the bending part 2 quickly.

[0043] In this embodiment, the limiting seat 47 is provided with an angle protrusion 470, and the limiting plate 42 is provided with a deflection groove 420, and the angle protrusion 470 and the deflection groove 420 are matched.

[0044] Through the above design scheme, the combination of the deflection protrusion 470 and the deflection groove 420 can limit the rotation angle of the bending part 2 and avoid excessive rotation angle or excessive rotation.

[0045] In this embodiment, the rotating shaft 3 also includes end caps 30 on both sides and a central shaft column 31 in the middle. The end caps 30 are fixedly connected to the bottom shell 10, and the central shaft column 31 is fixedly connected to the bending part 2.

[0046] In this embodiment, a limiting post 33 is provided in the central shaft post 31. The limiting post 33 is rotatably connected to the central shaft post 31, and the two ends of the limiting post 33 abut against the end cover 30 respectively. The end cover 30 and the limiting post 33 are provided with through holes, and a locking stud 35 is installed in the through holes. The locking stud 35 is used to lock the end cover 30 and the central shaft post 31.

[0047] Through the above design scheme, the limiting post 33 can provide support and ensure smoother rotation of the armrest 1 and the bending part 2. Under the action of the limiting post 33, the user does not need to worry about the locking stud 35 being over-tightened and affecting the normal rotation of the armrest 1.

[0048] The multi-stage rotating armrest for dental chairs provided by this utility model, compared with the prior art, allows the armrest body to be folded twice under the action of the pivot 3 when it needs to be stored, in addition to being flipped under the action of the adapter 4. Or the armrest 1 can be adjusted twice in angle. The folded armrest body will only occupy a small part of the side of the dental chair body, avoiding tripping medical staff and reducing safety hazards.

[0049] Where there is no conflict, the above embodiments and features can be combined with each other.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A multi-stage rotating armrest for a dental chair, comprising an armrest body rotatably connected to the dental chair body, characterized in that: The armrest body includes a bent part (2) and an armrest part (1). The armrest part (1) and the bent part (2) are rotatably connected by a pivot part (3). The pivot part (3) enables the armrest part (1) to bend and be close to the bent part (2). The bent part (2) is connected to the dental chair body through an adapter (4). The adapter (4) enables the bent part (2) and the armrest part (1) to be folded and stored on the side of the dental chair body.

2. A multi-stage rotating armrest for a dental chair according to claim 1, characterized in that: The armrest part (1) includes a bottom shell (10) and an armrest pad. The bottom shell (10) and the armrest pad are detachably connected. A cavity is provided between the armrest pad and the bottom shell (10). A paddle (11) and a pressure plate (12) are installed in the cavity. Both the pressure plate (12) and the paddle (11) are installed in the bottom shell (10) through a soft rubber column (13). A pressure column (120) is provided on the pressure plate (12). The pressure column (120) is used to paddle (11). A one-way locking plate (102) is provided at the end of the paddle (11). A fixing plate (34) is provided in the rotating shaft part (3). The fixing plate (34) meshes with the one-way locking plate (102). A locking spring (32) is provided in the rotating shaft part (3). One end of the locking spring (32) abuts against the rotating shaft part (3), and the other end of the locking spring (32) abuts against the one-way locking plate (102).

3. A multi-stage rotating armrest for a dental chair according to claim 2, characterized in that: A limiting plate (100) is provided in the bottom shell (10), and a limiting groove (110) is provided on both the paddle (11) and the pressure plate (12). The limiting groove (110) can slide on the limiting plate (100).

4. A multi-stage rotating armrest for a dental chair according to claim 3, characterized in that: Buttons (101) are provided on both sides of the bottom shell (10), and the buttons (101) are connected to the pressure plate (12).

5. A multi-stage rotating armrest for a dental chair according to claim 2, characterized in that: The bent part (2) is fixedly connected to the adapter (4). The adapter (4) is provided with an adapter hole (40). The adapter hole (40) is provided with a connecting post (41), a limiting plate (42) and a limiting spring (43). The connecting post (41) is provided with a limiting seat (47). Both the limiting seat (47) and the limiting plate (42) are provided with meshing teeth (48). The adapter hole (40) is provided with a limiting groove (44), and the limiting plate (42) is provided with a limiting groove (48). A protrusion (45) is made, and the protrusion (45) is fitted with a limiting groove (44); both ends of the adapter hole (40) are provided with a sleeve (46), and the sleeve (46) near the dental chair body is provided with an opening for the connecting post (41) to pass through; a limiting spring (43) is sleeved on the connecting post (41), one end of the limiting spring (43) abuts against the limiting plate (42), and the other end of the limiting spring (43) abuts against the sleeve (46) away from the dental chair body.

6. A multi-stage rotating armrest for a dental chair according to claim 5, characterized in that: The limiting seat (47) is provided with a deflection protrusion (470), and the limiting plate (42) is provided with a deflection groove (420). The deflection protrusion (470) and the deflection groove (420) are matched.

7. A multi-stage rotating armrest for a dental chair according to claim 2, characterized in that: The rotating shaft (3) also includes end caps (30) on both sides and a central shaft column (31) in the middle. The end caps (30) are fixedly connected to the bottom shell (10), and the central shaft column (31) is fixedly connected to the bending part (2).

8. A multi-stage rotating armrest for a dental chair according to claim 7, characterized in that: A limiting post (33) is provided in the central column (31). The limiting post (33) is rotatably connected to the central column (31), and the two ends of the limiting post (33) abut against the end cover (30). The end cover (30) and the limiting post (33) are provided with through holes, and a locking stud (35) is installed in the through holes. The locking stud (35) is used to lock the end cover (30) and the central column (31).

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