Rotary armrest device of dental comprehensive treatment chair

Abstract

The utility model relates to the technical field of dental comprehensive treatment chairs, in particular to a rotary armrest device of a dental comprehensive treatment chair, which comprises two limiting sleeves, the outer walls of the two limiting sleeves are both fixedly connected with mounting plates, the outer walls of the two mounting plates are both provided with two mounting holes, the end parts of the two limiting sleeves are both fixedly connected with shaft sleeves, and the shaft sleeves are fixedly connected with the shaft sleeves. The outer walls of the two shaft sleeves are rotatably connected with flanging bearings, the inner walls of the two shaft sleeves are rotatably connected with armrest shafts, the inner walls of the two armrest shafts are slidably connected with extension shafts, the inner ends of the two extension shafts penetrate through the shaft sleeves and extend into the limiting sleeves, and the inner walls of the two extension shafts are fixedly connected with clamping shafts; in a conventional state, the relative positions of the chair frame and the armrest frame are fixed, the armrest frame cannot rotate due to mistaken touch, and when the armrest frame is not needed, the armrest frame is pressed and then rotated to the rear, so that clothes are prevented from being easily pulled when a patient gets on and off the chair.

Description

TECHNICAL FIELD

[0001] The utility model relates to dental treatment chair technical field, concretely is a kind of rotating armrest device of dental treatment chair. BACKGROUND

[0002] Dental treatment chair has become indispensable core equipment in dental clinic. It integrates seat, illumination, saliva suction, spray cooling and other functions, greatly improves the efficiency and comfort of diagnosis and treatment. At present, these treatment chairs are more integrated with cutting-edge oral scanning and imaging technology, enabling dentists to perform diagnosis and treatment tasks with unprecedented accuracy.

[0003] However, as for the dental treatment chair on the current market, the chair frame module design still has deficiencies, although the chair is equipped with armrest, but the common L-shaped armrest structure rotating towards front, due to improper shape design, when patient gets on and off the chair, clothes are easily pulled, unnecessary trouble and safety hazard are brought, for this, we propose a kind of rotating armrest device of dental treatment chair. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of rotating armrest device of dental treatment chair, when not needing armrest frame, press and rotate to rear, to avoid that patient gets on and off the chair and clothes are easily pulled.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a kind of rotating armrest device of dental treatment chair, including two limit sleeves, two The outer wall of limit sleeve is fixedly connected with mounting plate, two The outer wall of mounting plate is equipped with two mounting holes;

[0006] Two The end of limit sleeve is fixedly connected with shaft sleeve, two The outer wall of shaft sleeve is rotatably connected with flange bearing, two The inner wall of shaft sleeve is rotatably connected with armrest shaft, two The inner wall of armrest shaft is slidably connected with extension shaft, two The inner end of extension shaft is passed through shaft sleeve and extends to the inside of limit sleeve, two The inner wall of extension shaft is fixedly connected with shaft, the both ends of shaft are respectively limit sleeve clamped and matched, two The inner end of limit sleeve is abutted with anti-drop ring, two The inner wall of anti-drop ring is inserted with screw, two The inner end of screw is respectively and armrest shaft screw connection, two The outer wall of extension shaft is equipped with spring;

[0007] Two The outer wall of armrest shaft is fixedly connected with connecting disc outside one end, two The end of extension shaft is passed through connecting disc and extends to its outside, The outer wall of connecting disc is fixedly connected with armrest frame, two The outer wall of armrest frame is equipped with fixed hole, two The inner wall of fixed hole is embedded with the decorative cover of slidable, two The inner wall of decorative cover is respectively and the extension shaft of corresponding fixed connection.

[0008] Further, one end of the spring is fixedly connected with the inner wall of the shaft sleeve, and the other end of the spring is fixedly connected with the extension shaft.

[0009] Further, the outer wall of each of the two limiting sleeves is provided with a first clamping groove at an inner end, and the outer wall of each of the two limiting sleeves is provided with a second clamping groove at an inner end, and the inner walls of the first clamping grooves and the second clamping grooves are fixedly connected with buffer pads.

[0010] Further, the seat is further provided with two support plates fixedly connected with the inner wall of the seat, the outer walls of the two support plates are provided with connecting holes, and the end portions of the two limiting sleeves are fixedly connected with the inner walls of the corresponding connecting holes, respectively.

[0011] By the above technical scheme, the utility model provides a rotating armrest device of a dental comprehensive treatment chair, which has at least the following beneficial effects:

[0012] 1. The rotating armrest device of the dental comprehensive treatment chair has the following advantages: in a normal state, the relative position of the chair frame and the armrest frame is fixed, so that the armrest frame will not rotate due to accidental touch, and when the armrest frame is not needed, it can be pressed and rotated to the rear, thereby avoiding the clothes of the patient from being easily pulled when the patient gets on and off the chair.

[0013] 2. The rotating armrest device of the dental comprehensive treatment chair has the following advantages: the rotating path of the armrest frame is designed with an increased slope, and a buffer pad is further added, so that no rigid collision and sound will be generated during actual use, and the use experience of the patient is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the utility model, constitute a part of the application and illustrate the utility model:

[0015] Figure 1 is a schematic view of the overall structure of the utility model;

[0016] Figure 2 is a schematic view of the local structure of the utility model;

[0017] Figure 3 is a schematic view of the local structure of the utility model; Figure 2 is an enlarged view of part A of the utility model;

[0018] Figure 4 is a schematic view of the local disassembled structure of the utility model;

[0019] Figure 5 is a schematic view of the structure of the limiting sleeve of the utility model.

[0020] In the diagram: 1. Seat; 2. Armrest frame; 3. Decorative cover; 4. Fixing hole; 5. Connecting plate; 6. Armrest shaft; 7. Extension shaft; 8. Clip shaft; 9. Flanged bearing; 10. Bushing; 11. Mounting plate; 12. Mounting hole; 13. Limiting sleeve; 14. Spring; 15. Anti-detachment ring; 16. Screw; 17. First slot; 18. Second slot; 19. Support plate; 20. Connecting hole; 21. Buffer pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 4 As shown, a rotating armrest device for a dental chair includes two limiting sleeves 13, each of which has a mounting plate 11 fixedly connected to its outer wall, and each of the two mounting plates 11 has two mounting holes 12 on its outer wall.

[0023] Both ends of the two limiting sleeves 13 are fixedly connected to the bushings 10. Both bushings 10 are rotatably connected to the outer walls of the two bushings 10. The rotatable connection of the bushings 9 ensures the stability of the handrail during rotation and reduces noise and wear. Both bushings 10 are rotatably connected to the inner walls of the two bushings 10. Both handrail shafts 6 are slidably connected to the inner walls of the two handrail shafts 6. The inner ends of both extension shafts 7 pass through the bushings 10 and extend into the inside of the limiting sleeves 13. Both extension shafts 7 are fixedly connected to the inner walls of the two extension shafts 7. The two ends of the clamping shafts 8 are respectively engaged with the limiting sleeves 13. Both limiting sleeves 13 are abutted against the inner ends of the two limiting sleeves 13. Both anti-detachment rings 15 are inserted into the inner walls of the two anti-detachment rings 15. The inner ends of the two screws 16 are respectively threaded to the handrail shafts 6. Both extension shafts 7 are fitted with springs 14. One end of the spring 14 is fixedly connected to the inner wall of the bushing 10, and the other end of the spring 14 is fixedly connected to the extension shaft 7.

[0024] The spring 14 provides additional support for the handrail and also helps it return to its original position after rotation, enhancing the stability of the device.

[0025] The sliding connection design between the handrail axis 6 and the extension axis 7 allows the handrail frame 2 to be adjusted according to the patient's needs, providing greater flexibility and comfort;

[0026] Two handrail shafts 6 are fixedly connected with connecting discs 5 at outer ends of outer walls, two extension shafts 7 extend to outer sides of the connecting discs 5 respectively by penetrating the connecting discs 5, the connecting discs 5 are fixedly connected with handrail frames 2 at outer walls, fixed holes 4 are formed at outer walls of the two handrail frames 2 respectively, slidable decorative covers 3 are embedded at inner walls of the two fixed holes 4 respectively, and the two decorative covers 3 are fixedly connected with corresponding extension shafts 7 at inner walls respectively.

[0027] As shown in Figure 5 , first clamping grooves 17 are formed at inner ends of outer walls of the two limiting sleeves 13 respectively, second clamping grooves 18 are formed at inner ends of outer walls of the two limiting sleeves 13 respectively, and buffer pads 21 are fixedly connected with inner walls of the first clamping grooves 17 and the second clamping grooves 18 respectively.

[0028] As shown in Figure 1 , Figure 2 and Figure 3 , the seat 1 is further included, the seat 1 is fixedly connected with two support plates 19 at an inner wall, connecting holes 20 are formed at outer walls of the two support plates 19 respectively, and end portions of the two limiting sleeves 13 are fixedly connected with inner walls of corresponding connecting holes 20 respectively, and the two mounting plates 11 are fixedly connected with corresponding support plates 19 by bolts respectively.

[0029] Working principle: in a normal position, the clamping shafts 8 are clamped in the first clamping grooves 17 of the limiting sleeves 13 under the elastic force of the springs 14, the handrail frames 2 cannot rotate around the extension shafts 7 as centers, and the situation that the handrails fall due to accidental touch can be effectively prevented;

[0030] When adjustment is needed, the decorative covers 3 are pressed at positions inside the handrail frames 2, the extension shafts 7 are pushed to move by the decorative covers 3, the clamping shafts 8 are slid outward from the first clamping grooves 17 by the extension shafts 7, the springs 14 are elastically deformed at this time, the handrail frames 2 fall rearward under the influence of gravity, and the handrail frames 2 are automatically stopped after the clamping shafts 8 are clamped in the second clamping grooves 18.

[0031] When resetting to the normal position is needed, the handrail frames 2 are only needed to be reversely rotated, the clamping shafts 8 are slid along the second clamping grooves 18 to the first clamping grooves 17 at this time, and the springs 14 are elastically deformed to return to the original positions.

[0032] It should be noted that the terms “comprising”, “containing”, or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or devices.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A swivel armrest device for a dental treatment chair comprising two limiting sleeves (13), characterized in that: Both outer walls of the two limiting sleeves (13) are fixedly connected with mounting plates (11), and both outer walls of the two mounting plates (11) are provided with two mounting holes (12). Both ends of the two limiting sleeves (13) are fixedly connected with shaft sleeves (10), both outer walls of the two shaft sleeves (10) are rotatably connected with flange bearings (9), both inner walls of the two handrail shafts (6) are slidably connected with extension shafts (7), both inner walls of the two extension shafts (7) are fixedly connected with clamping shafts (8), and the clamping shafts (8) are clamped and matched with the limiting sleeves (13) at both ends, respectively. Both outer walls of the two limiting sleeves (13) are fixedly connected with mounting plates (11), and both outer walls of the two mounting plates (11) are provided with two mounting holes (12).

2. A swivel armrest device for a dental treatment chair according to claim 1, characterized in that: Both ends of the two limiting sleeves (13) are fixedly connected with shaft sleeves (10), both outer walls of the two shaft sleeves (10) are rotatably connected with flange bearings (9), both inner walls of the two handrail shafts (6) are slidably connected with extension shafts (7), both inner walls of the two extension shafts (7) are fixedly connected with clamping shafts (8), and the clamping shafts (8) are clamped and matched with the limiting sleeves (13) at both ends, respectively.

3. A swivel armrest device for a dental treatment chair according to claim 2, characterized in that: Both outer walls of the two limiting sleeves (13) are fixedly connected with mounting plates (11), and both outer walls of the two mounting plates (11) are provided with two mounting holes (12).

4. A swivel armrest device for a dental treatment chair according to claim 3, characterized in that: The first clamping grooves (17) and the second clamping grooves (18) are fixedly connected with buffer pads (21) on the inner walls.

5. A swivel armrest device for a dental treatment chair according to claim 4, characterized in that: The seat (1) is further provided with two support plates (19) fixedly connected on the inner wall, and the outer wall of the two support plates (19) is provided with a connecting hole (20).

6. A swivel armrest device for a dental treatment chair according to claim 5, characterized in that: Both ends of the two limiting sleeves (13) are fixedly connected with the inner walls of the corresponding connecting holes (20), and the two mounting plates (11) are fixedly connected with the corresponding support plates (19) through bolts. Both ends of the two limiting sleeves (13) are fixedly connected with the inner walls of the corresponding connecting holes (20), and the two mounting plates (11) are fixedly connected with the corresponding support plates (19) through bolts.

Images