CN217593302U - Chair back of dental comprehensive therapeutic machine - Google Patents

Abstract

The utility model relates to the technical field of dental equipment, in particular to a chair back of a dental comprehensive therapeutic machine in human engineering, which comprises a first rotating pin, a tripod with one end connected with the first rotating pin and the other end movably connected with the lower end of a pull rod, a push-pull motor movably connected on a mounting plate through a connecting shaft and a telescopic rod connected with the connecting shaft at the top end of the tripod, a backrest with the upper end connected with the pull rod at the back, a backrest bracket and a cushion bracket positioned above the push-pull motor, wherein a mounting lug of the backrest is connected with the backrest bracket through a rotating shaft, the rotating radius of the backrest along the rotating shaft is 170-190 mm, and the height from the bottom of the backrest bracket to the center of the rotating shaft is 110-130 mm; the end of the cushion frame close to the backrest support is a vertex, and the included angle between the cushion frame and the horizontal plane is 8-15 degrees. The utility model discloses accord with human engineering, do not have and push away the back of the body and feel, only need the waist to rotate when lifting into the seat with the human body from the clinostatism, the buttock can not antedisplacement, has solved the not enough of human easy aversion, and its travelling comfort is good.

Description

Chair back of dental comprehensive therapeutic machine

Technical Field

The utility model relates to the technical field of dental equipment, in particular to a chair back of a dental comprehensive therapy apparatus in human engineering.

Background

When the dental comprehensive therapy apparatus is used for treating a patient, the patient lies on the chair in a supine posture, the patient needs to get up and spit and rinse the mouth at any time in the treatment process, and the patient needs to get up and lie down repeatedly for a plurality of times or even dozens of times in each treatment process. The existing chair frame of the dental comprehensive treatment machine sold in the market and used in clinic mostly has no automatic lifting and pushing function, a patient needs to rise and lie by himself, after treatment is completed, the patient can rise and lie for many times, the patient is tired, and the chair frame is particularly difficult for the elderly and patients with lumbar diseases to rise and only needs to be assisted by doctors and nurses.

I have researched and developed the chair frame with automatic lifting function in earlier research and development process, this chair frame can slowly push the patient of clinostatism into the seat in the automatic in-process that rises, can send the patient back to the clinostatism in the descending process, but current chair frame is because defect in the design, push away the people forward easily at the in-process that rises automatically and push away the patient into the seat, the buttock is preceding to be moved easily, can not get back to the normal position when leading to recumbent once more, need adjust oneself clinostatism again, not only delay treatment time, and the comfort is not good enough yet.

The utility model provides a technical problem do: the design of the chair back of the existing dental comprehensive therapeutic machine does not conform to the ergonomics, the back pushing feeling is too strong when the back of a patient is automatically lifted to be in a sitting position, the buttocks move forwards, the patient cannot return to the treatment original position when lying again, the self lying position needs to be adjusted again, the treatment time is delayed, and the comfort is not good enough.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a back of a chair of an ergonomic dental comprehensive therapy apparatus, which accords with ergonomics and does not have the feeling of pushing back, only needs the waist to rotate when lifting a human body from a lying position into a sitting position, can not move forwards at the hip, and solves the defect that the human body is easy to move.

The utility model discloses the technical scheme who adopts does: a chair back of an ergonomic dental comprehensive treatment machine comprises a first rotating pin, a tripod, a push-pull motor, a backrest support and a cushion support, wherein one end of the tripod is connected with the first rotating pin, the other end of the tripod is connected with the lower end of a pull rod, the push-pull motor is movably connected to a mounting plate through a connecting shaft, the telescopic rod is connected with the top end of the tripod, the backrest is connected with the upper end of the pull rod at the back, the backrest support and the cushion support are positioned above the push-pull motor, mounting lugs of the backrest are connected with the backrest support through rotating shafts, the rotating radius of the backrest along the rotating shafts is 170-190 mm, and the height from the bottom of the backrest support to the center of the rotating shafts is 110-130 mm; the end of the cushion frame close to the backrest support is a vertex, and the included angle between the cushion frame and the horizontal plane is 8-15 degrees.

The rotation radius of the backrest along the rotating shaft is 180mm.

The cushion frame and the horizontal plane form an included angle of 11 degrees.

The first rotating pin is provided with a support frame, and the support frame supports the backrest support and the cushion frame.

The backrest support is provided with a handrail.

The upper end of the pull rod is connected with a backrest rotating pin, the backrest rotating pin is positioned in the decorative shell, and the decorative shell is fixedly connected with the back of the backrest through a detachable connecting piece.

The number of the tripods is two.

The beneficial effects of the utility model reside in that: the utility model discloses the design of back, pivot and cushion support corresponds to human back (lumbar vertebrae), pelvis, buttock, and the height of back support is in 110 ~ 130 scope (equivalent to the height of human buttock to pelvis when sitting upright), and the radius of rotation of back along the pivot is 170 ~ 190mm (equivalent to the thickness of human pelvis to back), and the turning point of back is in the pivot, and when the push-and-pull motor telescopic link was released, the back was lifted up and rotated to the plummet position along the pivot and human back was lifted up along the pelvis under the drive of lumbar vertebrae until perpendicular with the buttock, namely the position of back turning point just unanimous with the waist turning point of health; meanwhile, the amplitude of the rotation radius of the backrest is equivalent to the rising and lying amplitude of the waist of a human body, and the backrest accords with human engineering. The backrest is laid flat to be lifted, the process is similar to the normal process of leveling to standing, discomfort (feeling of pushing the back) does not exist, the back of a human body cannot be pushed, the hip cannot move forwards, and the lumbar vertebra does not have oppression.

In addition, because the cushion frame is the tilt up structure from back to front, its travelling comfort is better, guarantees moreover that the buttock can not more forward move.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the supporting frame of the present invention;

FIG. 3 is a schematic view of the explosion structure of the backrest and the pull rod of the present invention;

the reference numbers and names in the figures correspond to the following: the multifunctional seat cushion comprises a first rotating pin 1, a tripod 2, a telescopic rod 3, a push-pull motor 4, a mounting plate 4-1, a connecting shaft 4-2, a seat cushion frame 5, a handrail 6, a rotating shaft 7, a backrest 8, a mounting lug 8-1, a pull rod 9, a backrest support 10, a support frame 11, a backrest rotating pin 12 and a decorative shell 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, an ergonomic dental comprehensive treatment machine chair back includes a first rotation pin 1, a tripod 2 having one end connected to the first rotation pin 1 and the other end movably connected (hinged in this embodiment) to the lower end of a pull rod 9, a push-pull motor 4 movably connected to a mounting plate 4-1 through a connecting shaft and having a telescopic rod 3 connected to the connecting shaft at the top end of the tripod 2, a backrest 8 having a back connected to the upper end of the pull rod 9, a backrest support 10 located above the push-pull motor 4, and a seat cushion 5, wherein a mounting ear 8-1 of the backrest 8 is connected to the backrest support 10 through a rotation shaft 7 and the rotation radius of the backrest 8 along the rotation shaft 7 is 170-190 mm, the height from the bottom of the backrest support 10 to the center of the rotation shaft 7 is 110-130 mm, and the height from the bottom of the backrest support 10 to the center of the rotation shaft 7 can be, but not limited to 110-130 mm, preferably, the height from the bottom of the backrest support 10 to the center of the rotation shaft 7 is 116.5mm, 126.5mm, and most preferably 120mm; the end of the cushion frame 5 close to the backrest support 10 is taken as a vertex, and the included angle between the cushion frame 5 and the horizontal plane is 8-15 degrees. That is to say that the cushion frame is the tilt up structure from back to front, and its travelling comfort is better, guarantees moreover that the buttock can more not forward removal.

Preferably, the rotation radius of the backrest 8 along the rotation shaft 7 is 180mm. But is not limited to 180mm. In some embodiments, the radius of rotation of the backrest 8 along the rotation axis 7 is 170mm, 175mm, 180.5mm, 185mm, 188mm, 190mm, respectively.

Preferably, the angle between the cushion frame 5 and the horizontal plane is 11 °. But is not limited to 11. In some embodiments, the angles between the seat cushion frame 5 and the horizontal plane are respectively 8 °, 10 °, 12 °, 13 °, 15 °, and the like.

In order to provide good supporting force, a supporting frame 11 is arranged on the first rotating pin 1, and the supporting frame 11 supports the backrest frame 10 and the seat cushion frame 5.

For the convenience of the patient, the backrest support 10 is provided with a handrail 6.

In order to facilitate the disassembly and assembly, in some embodiments, as shown in fig. 3, the upper end of the pull rod 9 is connected with a backrest rotating pin 12, the backrest rotating pin 12 is located in a decorative shell 13, and the decorative shell 13 is connected and fixed with the back of the backrest 8 through a detachable connecting piece.

The number of the tripods 2 is two.

The utility model discloses working process/principle: the back of the chair structural design mainly realizes around back turning point (pivot) and the radius of rotation of back and does not have the sense of pushing away the back (the back is not pushed into the seat, but is lifted, and the back rotates along the pelvis under the drive of lumbar vertebrae and becomes the seat from the position of lying on, and the buttock can not be carried forward). The position of the back turning point is just consistent with the waist turning point of the body; meanwhile, the rotation radius of the backrest is moderate, the backrest is like a human lumbar structure, and the backrest accords with human engineering. The back is put flat to the process of raising, seems people's normal flat to the process of standing up, does not have uncomfortable sense (push away the back sense), and human back is not pushed and is just raised and forward rotates to the sitting position, and the lumbar vertebrae is not oppressed, and the buttock also can not move forward.

The back 8 is mainly horizontally placed and lifted by the push-pull motor 4, the tripod 2, the connecting shaft 4-2, the pull rod 9, the first rotating pin 1 and the like.

And in the leveling process, the telescopic rod 3 of the push-pull motor 4 contracts to pull the connecting shaft at the top end of the triangular support 2, the triangular support 2 rotates clockwise along the first rotating pin 1, the pull rod 9 and the triangular support 2 realize the folding process, and the pull rod 9 pulls the backrest 8 to rotate anticlockwise along the rotating shaft 7, so that the leveling process is realized.

Lifting process: the telescopic rod 3 of the push-pull motor 4 extends out to push the connecting shaft at the top end of the tripod 2 to drive the tripod 2 to rotate anticlockwise along the first rotating pin 1, the folded tripod 2 and the pull rod 9 are pushed away, and the pull rod 9 pushes the backrest 8 to rotate clockwise along the rotating shaft, so that the lifting process is realized.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The chair back of the dental comprehensive therapy apparatus in the ergonomics is characterized by comprising a first rotating pin (1), a tripod (2) with one end connected with the first rotating pin (1) and the other end connected with the lower end of a pull rod (9), a push-pull motor (4) movably connected on a mounting plate (4-1) through a connecting shaft (4-2) and with a telescopic rod (3) connected with the top end of the tripod (2), a backrest (8) with the back connected with the upper end of the pull rod (9), a backrest support (10) and a cushion support (5) positioned above the push-pull motor (4), a mounting lug (8-1) of the backrest (8) is connected with the backrest support (10) through a rotating shaft (7), the rotating radius of the backrest (8) along the rotating shaft (7) is 170-190 mm, and the height from the bottom of the backrest support (10) to the center of the rotating shaft (7) is 110-130 mm; the end of the cushion frame (5) close to the backrest support (10) is taken as a vertex, and the included angle between the cushion frame (5) and the horizontal plane is 8-15 degrees.

2. The ergonomic dental unit back rest according to claim 1, wherein the radius of rotation of the back rest (8) along the rotation axis (7) is 180mm.

3. The ergonomic dental unit back rest according to claim 1 or 2, wherein the angle of the cushion frame (5) to the horizontal is 11 °.

4. The ergonomic dental unit back rest according to claim 3, wherein a support frame (11) is provided on the first pivot pin (1), the support frame (11) supporting the back rest support (10) and the cushion support (5).

5. The ergonomic dental unit back rest according to claim 4, wherein the back rest support (10) is provided with armrests (6).

6. The back of the ergonomic dental unit according to claim 5, wherein the upper end of the pull rod (9) is connected to a backrest rotation pin (12), the backrest rotation pin (12) is located in a decorative shell (13), and the decorative shell (13) is connected and fixed to the back of the backrest (8) by a detachable connection.

7. The ergonomic dental unit back rest according to claim 6, characterized in that the number of said tripods (2) is two.

Images