CN1003349B

CN1003349B - Dental treating chair

Info

Publication number: CN1003349B
Application number: CN85104336.4A
Authority: CN
Inventors: 渡边实
Original assignee: J Morita Manufaturing Corp
Current assignee: J Morita Manufaturing Corp
Priority date: 1985-06-08
Filing date: 1985-06-08
Publication date: 1989-02-22
Also published as: CN85104336A

Abstract

The present invention relates to a dentistry treatment stand which comprises a cushion, a tiltable backrest added on the cushion, an operation mechanism of the tiltable backrest and an apparatus stand capable of maintain horizontal when the backrest is inclined, wherein the apparatus stand is connected to the backrest through a longitudinal shaft and a supporting shaft, and can be freely rotated on a horizontal plane. A dentist can be at a position which is convenient for taking treatment apparatuses by the dentistry treatment stand without reference to the inclination of the backrest, and the dentist can face to the apparatus stand.

Description

Dental chair

The present invention relates to dental chair.

Many weeks, in dental treatment, be necessary to adjust at any time movable dental chair and place various treatment tools, medicine and dental instruments platform corresponding to patient's mouth position and dentist's art position.

Instrument table can be to be contained in can endwisely slip and at the treatment table that horizontal plane moves relative to the chair back on the dental chair, also can be the wish-bone arm type treatment table of the bar holded up from tooth chair side or the cantilever support of stretching out from wall.

Thisly be contained in treatment table on the dental chair, structurally obviously can not be adapted to the backrest Stuhl, insbesondere burodrehstuhl only for being used for the horizontal dental chair.In addition, though wish-bone arm type instrument table can vertically be adjusted, it can not make the patient that comfort is arranged, because arm-type support is positioned at the top of patient's one side on the seat, hinders patient's dental chair up and down.

The objective of the invention is to address the above problem, realize by a kind of particular structure, wherein instrument table can vertically be moved, and presses interaction relation by backrest inclination and rotate relative to horizontal plane, is horizontal simultaneously.

Describe embodiments of the invention in detail referring to accompanying drawing.

Fig. 1 is the axial cutaway view of the embodiment of the invention.

Fig. 2 is the plane graph of Fig. 1 embodiment.

Fig. 3 and Fig. 4 are respectively the axial cutaway views of other embodiment of the present invention.

Dental chair A of the present invention comprises a medicated cushion a, a backrest b and the manipulation device c that backrest b is tilted that is fixed on obliquely on the medicated cushion a.

Dental chair A comprises instrument table 1.Connecting rod 25 is housed in instrument table 1,25 can rotate with respect to backrest b by pin 23, make the axis with connecting rod 25 remain constant angle of incidence α, even when backrest inclination, also remain unchanged, by the longitudinal axis 11, horizontal rotating arm 13 is connected on the connecting rod 25, and the instrument table 1 of turning arm 13 1 ends can be rotated in horizontal plane around back shaft 12.Like this, even when backrest b tilts, instrument table 1 also can keep level, makes the patient can obtain suitable position and takes various dental tools in the instrument table, and be in the position in the face of instrument table all the time.Among Fig. 1, the bottom of backrest b is the framework a that is connected medicated cushion a by lateral shaft 21 ₁On the rear end.

Length l between the bearing pin 23 and 24 ₁And the equal in length between transverse axis 21 and the bearing pin 22, and two length section l ₁And l ₃Be parallel.Substantially parallel linkage 2 comprises connecting rod 25 and 26, framework a and backrest b.

Among Fig. 2, on one side the horizontal arm 27 that stretches out from backrest b is fixed on the upwards swing connecting bar 26 parallel linkage 2.The turning arm 13 that can horizontally rotate is connected on the end of arm 27 by trunnion axis 11.Another horizontal rotating arm 14 that has horizontal instrument table is ends that rotatably are connected cursor 13 by column 12.

And as can be seen from Figure 1, backrest b is by the piston rod C on the ram pot c ₁An end support.(handling the device of backrest inclination) ram pot C is contained in the side of medicated cushion a, and its installation method is, as piston rod C ₁When putting in and pulling out a tin C, backrest b can tilt around lateral shaft 21.

Like this, when operating mechanism C work and parallel linkage 2 actions, backrest b medicated cushion a relatively tilts.The angle of incidence α of connecting rod 25 remains unchanged, and by the instrument table 1 maintenance level of connecting rod 25 horizontal rests, can be risen or descend by the instrument table 1 of connecting rod 25 horizontal rests, is in level simultaneously all the time.

The relation of the upper-lower position of instrument table 1 and head rest d depends on the position of the connecting rod 25 in the parallel linkage 2 and the angle of incidence of backrest b.Yet, as long as do not hinder other parts that are installed among the backrest b, to adorn connecting rod 25 highly as much as possible during installing apparatus platform 1, backrest b is when lifting like this, and instrument table can be approaching as much as possible from head rest d.Instrument table 1 even can exceed seat, so better dental instruments and medicine (not shown) are put thereon.Side in instrument table 1 also has hook 15, in order to hang various apparatus (not shown).

In the above on the dental chair A of Miao Shuing, even backrest b be corresponding from horizontal level to lifting the position, or moving on to horizontal level from lifting the position, instrument table 1 all is by the horizontal arm 27 and the horizontal rotating arm 13 maintenance levels that are fixed on the connecting rod 25, because the angle of incidence α of connecting rod 25 always remains unchanged.Like this, when backrest b is moved upwards up to when lifting the position, instrument table 1 is also upwards risen automatically, and when backrest b shifts to horizontal level, platform 1 also moves down automatically, and this can make instrument table 1 keep and the position of head rest d corresponding height.

In addition, instrument table 1 can be rotated along horizontal plane by the longitudinal axis 11 and back shaft rest.So, when turning down backrest b, make patient when horizontal level is received treatment, patient keeps flat-hand position, and the patient can be placed on place at hand to instrument table easily, or rotates cursor 13 or swing horizontal arm 14 is pushed instrument table 1 open.Even when rising backrest b, make patient in the position that makes progress, on medicated cushion a, receive treatment with sitting posture, the relative patient's of doctor position, from and one (as if 12 the time, minute hand stands in the patient head rear with the position-doctor of hour hands) to separating 45 stand (doctor stands in patient's Right deviation, as clock and watch minute hand and the hour hands position at 9) or reverse situation, also can obtain the effect that the front is chatted.

If according to the treatment classification, the doctor for adapt to patient upwards and recumbent posture change its surgery location and posture, instrument table 1 also can be supported in the sustained height of relative disease human mouth, it is relative with the patient also to be placed in appropriate position at an easy rate.In addition, as the instrument in the needs use instrument table, medicine does not need to move and crooked knee with the dental instruments that is suspended on the hook 15, doctor, can accomplish like a dream.Like this, can make the doctor improve therapeutic efficiency, and lessen fatigue greatly.

Have, because there is not the common arm-type support that places the patient top, so instrument table of the present invention also has the another one advantage, patient does not have uncomfortable feeling, can accomplish comfortable treatment again.

Subsidiary saying has a handle 121 on the backbone point of the bolster 12 of turning arm 13 and feathering axis 14, this handle is used for the upper-lower position of instrument table 1 and finely tunes.

Two isometric connecting rods 201 axially are connected with 2021 by pin 2011 respectively with 202.The connecting rod 203 that length equals intercept between

2031 and 2032 axially is connected to the lower end of connecting

rod

201 and 202 by

2031 and 2032, and one of formation is by connecting rod 202 and 203 and framework a below medicated cushion a ₁The parallel linkage 200 that constitutes.Connecting rod 26 ' an end, axially be connected by the swinging end of pin 24 with connecting rod 25, and connecting rod 26 ' the other end axially be connected by the end of pin 2031 with connecting rod 201 and connecting rod 203.In fact be formed in the backrest b by connecting rod 25,26 ', 203 and the parallel linkage 2 that constitutes jointly of backrest b '.Two parallel linkages 2 of connecting rod 203 connections ' and 200, the linkage 20 of formation dual parallel.

Have groove 3 on the side of backrest b.Be fixed on the framework a of medicated cushion a ₁Transverse axis 21 on the rear end is slidingly matched in groove 3.Because under the effect of the effect of control device C and double connecting rod and transverse axis 21 jointly controlled along the slip of groove 3, the relative medicated cushion of backrest b tilted and also makes instrument table 1 remain on level.

The operating mechanism of ram pot C(inclination backrest) be installed in the bottom of medicated cushion a, and the tailpiece of the piston rod C of ram pot C ₁Axially be connected on the connecting rod 202 that constitutes parallel linkage 200.Piston rod C on ram pot ₁During action, slide in groove 3 in response to transverse axis 21, double connecting rod 20 tilts backrest b.

Because keeping the connecting rod 25 of instrument table 1 is not only parallel l ₃Section, and it is fixed on the medicated cushion a simultaneously, so the angle of incidence of connecting rod 25 is constant all the time when backrest b tilts.

In addition, as above chat face to face and state, by horizontal rotating arm 13, horizontal rotating arm 14, the instrument table 1 of the longitudinal axis 11 and back shaft 12 horizontal supportings can move up and down, and also can keep rotation freely in horizontal plane under the horizontal state, even also like this when backrest inclination.

In first embodiment, because backrest b rotates around transverse axis 21, can be formed on the inclination center of (around transverse axis 21) on the medicated cushion, prevent to be positioned at the unexpected slip that the insensitive patient of the inclination to backrest b on the backrest b can produce the relative backrest b of back.In addition, take a seat or when medicated cushion a stands up, as handrail, also may be in the way the transverse axis 21 that stretches out medicated cushion a sometimes as patient.

The structure of second embodiment is such, exteriorly, because two parallel linkages 2 ' and 200, also is referred to as the action of two parallel linkages 20 and drives ram pot C, makes the rear portion of medicated cushion a prolong groove 3 and slides.Seat itself center that do not tilt, and the low side of backrest b is when rising, good as if lift from chair cushion a bottom and when it was downward-sloping, it seemed to fall also lowlyer than medicated cushion a.As a result, this method of tilting that slides through between patient's back and the backrest b is compensated.And without any the outstanding medicated cushion a surface of object.Like this, second embodiment is better than first embodiment as a treatment chair on function.

Say, also can make groove 3 on one side to have the arcuate groove of flexural center again at seat, like this can be at an easy rate with the motion inclination backrest b of patient's back.

Fig. 4 is an another embodiment of the present invention, but does not wherein have the parallel linkage 2 among first embodiment.Operating mechanism 4 is different, and the ram pot that promptly is connected on the connecting rod 25 is contained in backrest b bottom.Operating mechanism 4 makes the inclination angle of operating mechanism C of the relative backrest b that can tilt on the connecting rod 25 constant.Therefore, ram pot C with move by interaction relation as the ram pot of inclination backrest b.And ram pot C ₁Ram pot is made back and forth movement.By feathering axis 13, the longitudinal axis 11 and back shaft 12 are freely moved up and down in horizontal plane and rotate under the condition of level keeping by connecting rod 25 instrument table 1 of rest flatly.Even also like this when backrest b tilts, correspondingly instrument table also is same as front description and diagrammatic other embodiment on the function of mode.

Also have, in the above among the embodiment of Miao Shuing, parallel linkage 2 and 2 ', perhaps hydraulic actuator 4 all is assembled among the backrest b.Also can be installed in these assemblies the side of backrest b, they are worked by similar mode.Making the operating mechanism C of backrest inclination among the expression embodiment is hydraulic actuator, normally used operating mechanism such as motor, and axle and cylinder combination also can be used.

As mentioned above, on the present invention and dental chair, even the doctor changes his treatment position and posture according to the inclination of backrest, instrument table can not only automatically move on to the height in patient's oral cavity under the condition of maintenance level, but also can move on to the position of being convenient to doctor's operation, its result, doctor do not need to go down on one's knees or bend to adapt to the therapeutic state that the chair back tilts, and more can take instrument, medicine and all kinds of therapeutic device in the instrument table at an easy rate.

Like this, the doctor can treat very smoothly, also can avoid tired.In addition, patient also can have uncomfortable sensation ground and does not cosily receive treatment, and as mentioned above, this dental chair is very practical, and advantage such as high efficiency is arranged.

Claims

1, a dental chair comprises a medicated cushion (a), a backrest (b) that tilts to insert medicated cushion (a), a head rest (d) and one are used for the driving device (c) of backrest (b), the feature of above-mentioned dental chair is: this chair also comprises be connected the instrument table (1) backrest (b) on of a proximity heads by (d), connecting rod (25) is housed in this instrument table (1), backrest (b) is at the vertical plane internal rotation relatively, and be fixed on the backrest (b) by pin (23), the angle of incidence (a) that above-mentioned connecting rod (25) always remains unchanged with the axis of connecting rod (25), even when backrest (b) tilts also is like this, like this by horizontal rotating arm (13) one longitudinal axis (11) are connected with connecting rod (25), and commentaries on classics spiral shell arm (13) end instrument table (1) can be rotated in horizontal plane around bolster (12), therefore, even when backrest (b) tilts, instrument table (1) is also by horizontal rest, so that the patient can take the various dental tools in the instrument table easily, and be in the position of relative instrument table.

2, dental chair according to claim 1, wherein, the bottom of above-mentioned backrest is connected to the bottom of chair frame with transverse axis, and connecting rod 26 is rotatably connected on the swinging end of connection 25 with pin 24, and the other end of connecting rod 26 is to do axial support by pin 22 by the back-end framework of medicated cushion, length equals the length of 23 of transverse axis 21 and pins between pin 23 and the pin 24, and maintenance level, therefore can constitute and comprise connecting rod 25, the substantially parallel linkage (2) of framework and backrest, its motion mode is, backrest is with respect to the inclination of medicated cushion, be the operating mechanism by the inclination backrest, the common moving behaviour that can move up and down the parallel linkage (2) of instrument table with the maintenance level finishes.

3, dental chair according to claim 1, wherein mutual isometric connecting rod 201,202 respectively by pin 2011,2021 axially connect, and the isometric connecting rod 203 of distance segment is limited between connecting rod 201 and 202 between length and pin 2011 and 2021, and axially couple together by pin 2031 and 2032, constitute and comprise connecting rod 201,202,203 and the medicated cushion lower frame, substantially parallel linkage 200, and an end of connecting rod 261 is the swinging ends that axially are connected connecting rod 25 by pin 24, and the other end of connecting rod 261, be connected on by pin axle 2031 on the end of connecting rod 201 lower ends and connecting rod 203, constituted like this and comprised connecting rod 25,26 ', 203 and the chair back on backrest, substantially parallel linkage 2 ', its motion mode is, the linkage 2 that is parallel to each other ' and 200, be connected by extension bar 203, constitute two parallel linkages, and on a side of backrest, have groove, transverse axis on the framework that is fixed on the medicated cushion rear portion can be fixed on slidably makes backrest tilt with respect to medicated cushion in the groove, and at the operating mechanism of inclination backrest, under the common controlled state of the transverse axis of dual parallel linkage and the effect of opposed slot ditch, apparatus is accounted for can oscilaltion in the maintenance level.

4, dental chair according to claim 1, wherein the operating mechanism that links to each other with linkage 2 is mounted in the medicated cushion, and above-mentioned operating mechanism is to regulate like this, and it is cooperated with linkage 2, makes the invariable incident angle on the connecting rod.

5, according to claim 1,2,3 or 4 described dental chairs, the hook that can hang various dental instruments is arranged in its instrument table.