Dental chair with rapid adjustment headrest

Abstract

The utility model relates to dental medical instrument technical field provides a kind of dental chair of quick adjustment head headrest, including dental chair main body, dental chair main body includes pedestal, backrest and headrest, pedestal is connected with backrest, still include adjusting assembly, headrest is connected with backrest by adjusting assembly;Compared to prior art, headrest can swing according to certain angle under the cooperation of forward ratchet disc and reverse ratchet disc, angle adjustment is facilitated;When patient head leans on headrest, forward ratchet disc and reverse ratchet disc will mutually engage under the action of gravity, prevent headrest automatic reset;When needing to reset headrest, user can drive reverse ratchet disc away from forward ratchet disc by pressing pressing plate, headrest can rotate freely after losing restriction, and it is convenient to reset headrest.

Description

Technical Field

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

[0002] The dental chair is an essential component of dental treatment. During treatment, the backrest or headrest often needs to be adjusted to fit the patient's body shape. Current dental chair headrests typically use a screw-lock system. Clinicians must first loosen the knob, adjust the headrest to the desired position, and then tighten the knob to secure it. While this method allows for proper headrest adjustment, it requires considerable force, making it inconvenient and inefficient for clinicians with limited strength.

[0003] The adjustment mechanism of the dental chair headrest needs further improvement. Utility Model Content

[0004] The purpose of this invention is to provide a dental chair with a quickly adjustable headrest, aiming to solve the problems of the existing dental chair headrest adjustment methods being laborious and inefficient.

[0005] To achieve the above objectives, this utility model provides a dental chair with a quickly adjustable headrest, including a dental chair body, which includes a base, a backrest and a headrest. The base is connected to the backrest and also includes an adjustment component. The headrest is positioned on the upper part of the backrest through the adjustment component.

[0006] The adjustment assembly includes a fixedly connected angle adjustment part and a height adjustment part. The angle adjustment part is used to adjust the swing angle of the headrest, and the height adjustment part is used to adjust the height of the headrest.

[0007] Furthermore, the height adjustment unit includes a connecting plate, and the angle adjustment unit includes a support plate, a connecting column, a pressure plate, and a return spring. The adjustment assembly is mounted on the backrest via the connecting plate. A set of connecting columns is provided at each end of the support plate, and the two sets of connecting columns are fixedly connected to the headrest and the connecting plate, respectively. The pressure plate is slidably mounted on the connecting column, and the pressure plate is parallel to the support plate. The return spring is located between the pressure plate and the support plate, with one end of the return spring abutting against the pressure plate and the other end of the return spring abutting against the support plate. A forward ratchet is provided on the connecting column, and a reverse ratchet is provided on the pressure plate that engages with the forward ratchet.

[0008] Furthermore, the angle adjustment part also includes a cover, and a mounting part is provided on the support plate. The mounting part is fixedly connected to the cover, and the cover is provided with openings corresponding to the pressure plate and the connecting column, respectively.

[0009] Furthermore, a limit post is provided on the support plate to limit the return spring.

[0010] Furthermore, a insert plate is provided on the backrest, and the insert plate is slidably connected to the connecting plate.

[0011] Furthermore, the base includes a base plate, a lifting part, and a seat part. The base plate is connected to the lifting part, and the side of the lifting part away from the base plate is connected to the seat part. The seat part is connected to the backrest via an arch frame.

[0012] Furthermore, armrests are provided on both sides of the seat, and the armrests are rotatably connected to the seat.

[0013] Furthermore, the lifting unit is equipped with a lifting cylinder and a swing rod, and the base has an internal cavity.

[0014] This invention provides a dental chair with a quickly adjustable headrest. Compared to existing technologies, the headrest can swing at a certain angle with the cooperation of the forward and reverse ratchet discs, facilitating angle adjustment. When the patient's head rests on the headrest, the forward and reverse ratchet discs will engage under gravity to prevent the headrest from automatically resetting. When the headrest needs to be reset, the user can press the pressure plate to move the reverse ratchet disc away from the forward ratchet disc. After the restriction is removed, the headrest can rotate freely, making it easy to reset the headrest. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a perspective view of the backrest in this utility model;

[0017] Figure 3 This is a side view of the backrest in this utility model;

[0018] Figure 4 This is a perspective view of the adjustment component in this utility model;

[0019] Figure 5 This is a front view of the adjustment component in this utility model;

[0020] Figure 6 This is an exploded view of the adjustment component in this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] in;

[0023] 1. Base; 10. Base plate; 11. Lifting mechanism; 12. Seat; 13. Armrest;

[0024] 2. Backrest; 20. Insert panel;

[0025] 3. Headrest;

[0026] 4. Adjustment component; 40. Connecting plate; 41. Support plate; 42. Connecting post; 43. Pressure plate; 44. Forward ratchet disc; 45. Reverse ratchet disc; 46. Return spring; 47. Limiting post; 48. Protective cover; 49. Mounting part. Detailed Implementation

[0027] The present invention will be described in detail below with reference to specific embodiments.

[0028] 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.

[0029] like Figures 1 to 6 As shown, this utility model provides a dental chair with a quickly adjustable headrest, including a dental chair body, which includes a base 1, a backrest 2 and a headrest 3. The base 1 is connected to the backrest 2, and an adjustment component 4 is also included. The headrest 3 is set on the upper part of the backrest 2 through the adjustment component 4. The adjustment component includes an angle adjustment part and a height adjustment part fixedly connected. The angle adjustment part is used to adjust the swing angle of the headrest 3, and the height adjustment part is used to adjust the height of the headrest 3.

[0030] Through the above technical solution, an adjustment component 4 is set between the headrest 3 and the backrest 2. The swing angle of the headrest 3 can be adjusted by the angle adjustment part and the height of the headrest 3 can be adjusted by the height adjustment part, so that medical staff can quickly adjust the swing angle and height of the headrest 3.

[0031] In this embodiment, the height adjustment part includes a connecting plate 40, and the angle adjustment part includes a support plate 41, a connecting column 42, a pressure plate 43, and a return spring 46. The adjustment assembly 4 is installed on the backrest 2 through the connecting plate 40. A set of connecting columns 42 is provided at both ends of the support plate 41, and the two sets of connecting columns 42 are fixedly connected to the headrest 3 and the connecting plate 40 respectively. The pressure plate 43 is slidably installed on the connecting column 42, and the pressure plate 43 is arranged parallel to the support plate 41. The return spring 46 is provided between the pressure plate 43 and the support plate 41, with one end of the return spring 46 abutting against the pressure plate 43 and the other end of the return spring 46 abutting against the support plate 41. A forward ratchet disc 44 is provided on the connecting column 42, and a reverse ratchet disc 45 that matches the forward ratchet disc 44 is provided on the pressure plate 43.

[0032] With the above design, since the ratchet includes an inclined surface and a vertical surface, when the headrest 3 rotates in the direction of the inclined surfaces of the forward ratchet 44 and the reverse ratchet 45, the forward ratchet 44 and the reverse ratchet 45 will not interfere with each other, and the headrest 3 can move freely. When the headrest 3 rotates against the direction of the inclined surfaces of the forward ratchet 44 and the reverse ratchet 45, the vertical surfaces of the forward ratchet 44 and the reverse ratchet 45 abut against each other, and the headrest 3 cannot rotate. Under the action of the forward ratchet 44 and the reverse ratchet 45, when the user pulls the headrest 3, the headrest 3 can swing normally. When the patient lies down with the headrest 3, the headrest 3 is pressed and rotates backward, but under the action of the vertical surfaces of the forward ratchet 44 and the reverse ratchet 45, the headrest 3 cannot move backward, thus preventing the headrest 3 from automatically changing its position.

[0033] When it is necessary to release the lock between the forward ratchet 44 and the reverse ratchet 45 and put the headrest 3 back in place, the medical staff can press the pressure plate 43 to move the reverse ratchet 45 away from the forward ratchet 44. The forward ratchet 44 and the reverse ratchet 45, which are now far apart, no longer interfere with each other. At this time, the headrest 3 can swing freely. Therefore, the user can swing the position of the headrest 3 freely while pressing the pressure plate 43. After releasing the pressure plate 43, the return spring 46 will automatically lift the pressure plate 43, and the reverse ratchet 45 on the pressure plate 43 will stick to the forward ratchet 44 on the connecting post 42. The headrest 3 will then re-enter a state where it can be pulled up but cannot be pressed down.

[0034] In this embodiment, the angle adjustment part also includes a cover 48, and a mounting part 49 is provided on the support plate 41. The mounting part 49 is fixedly connected to the cover 48, and the cover 48 is provided with openings corresponding to the pressure plate 43 and the connecting post 42 respectively.

[0035] Through the above design scheme, the cover 48 is used to protect the support plate 41, the connecting column 42, the pressure plate 43 and the return spring 46, so as to prevent them from being bumped or hit. At the same time, it can also prevent the headrest 3 from pinching medical staff during the swinging process.

[0036] In this embodiment, a limiting post 47 is provided on the support plate 41, which is used to limit the reset spring 46.

[0037] Through the above design scheme, the limiting post 47 on the support plate 41 can limit the activity space of the return spring 46 and prevent the return spring 46 from shifting during repeated compression and relaxation.

[0038] In this embodiment, a backrest 2 is provided with a insert plate 20, which is slidably connected to the connecting plate 40.

[0039] With the above design, medical staff can adjust the position of the connecting plate 40 through the insert plate 20, thereby adjusting the distance between the headrest 3 and the backrest 2.

[0040] In this embodiment, the base 1 includes a base plate 10, a lifting part 11 and a seat part 12. The base plate 10 is connected to the lifting part 11. The side of the lifting part 11 away from the base plate 10 is connected to the seat part 12. The seat part 12 is connected to the backrest 2 through an arch frame.

[0041] In this embodiment, armrests 13 are provided on both sides of the seat 12, and the armrests 13 are rotatably connected to the seat 12.

[0042] In this embodiment, the lifting part 11 is provided with a lifting cylinder and a swing rod. The lifting cylinder and the swing rod cooperate with each other to control the seat part 12 to rise or fall. The base 1 has a cavity inside, which is used to install an air pump and an electrical control unit.

[0043] Since the base plate 10, the lifting part 11 and the seat part 12 are existing technologies and are not the improvement points of this embodiment, they are not described in detail in this embodiment.

[0044] The dental chair with a quick-adjustable headrest provided by this utility model, compared with the prior art, allows the headrest 3 to swing at a certain angle with the cooperation of the forward ratchet disc 44 and the reverse ratchet disc 45, which facilitates angle adjustment; when the patient's head rests on the headrest 3, the forward ratchet disc 44 and the reverse ratchet disc 45 will engage with each other under the action of gravity to prevent the headrest 3 from automatically resetting; when it is necessary to reset the headrest 3, the user can press the pressure plate 43 to drive the reverse ratchet disc 45 away from the forward ratchet disc 44, and after the restriction is removed, the headrest 3 can rotate freely, which facilitates the reset of the headrest 3.

[0045] Where there is no conflict, the above embodiments and features can be combined with each other.

[0046] 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 dental chair with a quickly adjustable headrest, comprising a dental chair body, the dental chair body including a base (1), a backrest (2) and a headrest (3), the base (1) and the backrest (2) being connected, characterized in that: It also includes an adjustment component (4), and the headrest (3) is set on the upper part of the backrest (2) through the adjustment component (4); The adjustment component (4) includes an angle adjustment part and a height adjustment part that are fixedly connected. The angle adjustment part is used to adjust the swing angle of the headrest (3), and the height adjustment part is used to adjust the height of the headrest (3). The height adjustment unit includes a connecting plate (40), and the angle adjustment unit includes a support plate (41), a connecting column (42), a pressure plate (43), and a return spring (46). The adjustment assembly (4) is installed on the backrest (2) through the connecting plate (40). A set of connecting columns (42) is provided at both ends of the support plate (41), and the two sets of connecting columns (42) are fixedly connected to the headrest (3) and the connecting plate (40) respectively. The pressure plate (43) is slidably installed on the connecting column (42), and the pressure plate (43) is parallel to the support plate (41). The return spring (46) is provided between the pressure plate (43) and the support plate (41), with one end of the return spring (46) abutting against the pressure plate (43) and the other end of the return spring (46) abutting against the support plate (41). A forward ratchet disc (44) is provided on the connecting column (42), and a reverse ratchet disc (45) that matches the forward ratchet disc (44) is provided on the pressure plate (43). The angle adjustment part also includes a cover (48), and a mounting part (49) is provided on the support plate (41). The mounting part (49) is fixedly connected to the cover (48), and the cover (48) is provided with openings corresponding to the pressure plate (43) and the connecting column (42).

2. The dental chair with a quickly adjustable headrest according to claim 1, characterized in that: A limit post (47) is provided on the support plate (41), and the limit post (47) is used to limit the reset spring (46).

3. A dental chair with a quickly adjustable headrest according to claim 1, characterized in that: A plug plate (20) is provided on the backrest (2), and the plug plate (20) is slidably connected to the connecting plate (40).

4. A dental chair with a quickly adjustable headrest according to claim 1, characterized in that: The base (1) includes a base plate (10), a lifting part (11) and a seat part (12). The base plate (10) is connected to the lifting part (11). The side of the lifting part (11) away from the base plate (10) is connected to the seat part (12). The seat part (12) is connected to the backrest (2) through an arch frame.

5. A dental chair with a quickly adjustable headrest according to claim 4, characterized in that: Armrests (13) are provided on both sides of the seat (12), and the armrests (13) are rotatably connected to the seat (12).

6. A dental chair with a quickly adjustable headrest according to claim 4, characterized in that: The lifting part (11) is equipped with a lifting cylinder and a swing rod, and the base (1) has a cavity inside.

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