DE2263795A1 - TREATMENT CHAIR AND PRESELECTION DEVICE FOR SUCH A CHAIR - Google Patents

Description

Dipl.-Ing. H. MITSCHERLICH ₈ MONKS Dipl.-Ing. K. GUNSCHMANN SteinsdorfciroBe 10 Dr. rer, nat. W. KÖRBER® (08ii) * 29 6684

Dipl.-Ing. J. SCHMIDT-EVERS 2263795

PATENT LAWYERS

KAYO Italia S.p.A. Gu / Ne

16167 Genova-CTervi / Italy _{28 # DezeiIll3er 19? 2}

Via del Gommercio, 35

■ Patent application

Treatment chair and a Yorwahleinri c ht u n fo r

so little chair

The invention relates to a particularly dental one Treatment chair, its seat and backrest together and in relation to the lower part of the chair are movably mounted, so that the corresponding angular position of the seat and backrest as well as the angular position to the vertical axis of the lower part of the chair can be changed by means of a motor drive from program control means is controlled to the position and the angular position of the chair seat and backrest as required by the dentist set automatically.

In the case of such a dental chair with preprogrammed, automatic movements, it is usually required that the angle between the seat and the backrest can be adjusted as desired, and that any desired angle position the seat and backrest can also be inclined to the vertical axis of the lower part of the chair.

309828 / 03SS

The setting of the program control means with the help of z. B. Dial buttons or handles can cause difficulties for your practitioner because he imagines the desired setting of the chair, but he does so in his work what is focused is that he is doing the preselection incorrectly, so that the chair misses the desired position.

The invention is based on the object of such a preselection option to ensure that the desired chair setting can be achieved with certainty.

For this purpose, it is proposed according to the invention that the Program control means a manually operated preselection device with pointers for visual representation of each, which takes place at the same time as the program setting of the preselection device Has chair division.

In this way it is achieved that when the preselection device is actuated, the pointer optically displays the desired chair arrangement play back, and at the same time when this is set by the practitioner or dentist. Features in this way he has an immediate visual control. This makes programming a lot easier, and programming errors are practically impossible.

The essence of the invention therefore consists of a mechanical reversal system of the program control means that control the motorized drive means of the seat and the backrest of the chair, consequently changing the controls of said control means in the form of a suitable optical repetition unit, which each time the profile of the chair in reproduces the positions of the backrest and the seat, corresponding to those that are effectively taken over by the chair, based on the program entered into these controls.

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In the drawing, embodiments of the invention are "for example shown:

Show it:

i'ig. 1 a handling style with automatic, preprogrammed Actuation to adjust the inclination of the backrest and the seat, on which a preselection device with position indicator is arranged, in view of the Page,

i'ig. 2 the position indicator in enlarged scale,

Üg. 3 the pre-selection device in the section after the line Ι1Ϊ-11Ι in I'ig. 2,

i'ig. 4- a modified version of the preselection device in front view,

ü'ig. 5 a section along the line V-V in i'ig. 4 and j? 'ig. 6 a section along the line VI-VI in i'ig. 5 *

The position indicator 1 has a first preselection member 2, for. B. an electric rotary switch, which is rotatable via a ring formed by several setting positions, the movable contact can be adjusted by a handle 102 via a control shaft 3, which is rotatably arranged in a fixed the fixed contacts of the switch. Further, a second code organ 5 (switch) is provided, which similarly may be formed r \ as described, and its contact can be moved directly by means of a handle 105 through a sound wave 6 movable.

The position of the position indicator 1 on the frame of the treatment chair P above the base B is in i'ig. 1 can be seen.

The switch shaft 6 is rotatable and is located in a sleeve V, which in turn is arranged in a hub 8 which is rotatably mounted in the fixed housing 4 and whose axis is parallel zui 'axis of the switching shaft J runs.

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The bearing of the fixed contacts of the switch 5 is arranged on a movable housing 9 which is fastened to the hub 8 and can thus rotate together with it. On the hub 8, a gear 10 is placed, which is driven by the shaft 3 via one of D opp el gears 10, 11; 12, 13; 14-, 15 formed kinematic chain is driven. This kinematic chain representing a gear causes a certain transmission ratio between the shaft 3 and the hub 8. Due to the transmission, a certain rotation of the shaft 3 achieves an inevitable and correspondingly reduced rotation of the movable housing 9 and a pointer 16, which at one end of the hub 8 is attached and the stylized Porm of a movable part of the chair, e.g. B. the seat S represents.

At one end of the sleeve 7, the one in the movable housing 9 protrudes into it, a gear 17 is attached, which with a certain transmission ratio through the shaft 6 in motion is set. For this purpose, a double gearwheels 17, 18; 19> 20, which are rotatably mounted in the housing 9, existing kinematic chain. At the other end of the sleeve 7, a pointer 21 is arranged, which stylizes the other movable part of the chair P embodied, in the example shown, the backrest D.

In the same way , the pointers 16 and 21 of the seat and the backrest rotate - in accordance with the geometric axis of the shaft 6.

The rotation of the shaft 6 is effected by hand by means of the handle 105, while only the pointer 21 corresponding to the backrest D is set in motion. If the shaft 3 is actuated by the handle 102, the seat b pivots

309828/0395

corresponding pointer 16 together with that of the ^ backrest D corresponding Pointer 21 simultaneously. Of course, the preselection organs 2 and 5 are. the program circuit of the drive means to operate the seat S and the backrest D switched on and coordinated with the settings of the hands 16 and 21, so that the chair adjusts itself to the position indicated by the pointers. The dentist can after seeing the Backrest D is adjusted by operating the handle 105 has the angular position of the seat backrest through the handle 102 change, and by checking the hands 16 and 21 he can check the accuracy of the programmed settings, before the chair has assumed these positions.

In Fig. 2 is a changed position of the movable housing 9 and the pointer 16 and 21 with dash-dotted lines The changed pointer positions are denoted by 116 and 121.

One of the advantages offered by this preselection device is especially the ability to control the position of the chair at any time to be able to d. H. at the same time by programming them and before the chair actually moves into position the dentist is relieved of any unnecessary consideration of the final position of the chair and he can correct any setting errors in good time.

Of course, the invention is not limited to the embodiment described so far. In the embodiment according to ifig. 4, 5 and 6, the movable housing 9 is arranged inside the fixed housing 4- and can rotate inside the latter. For this purpose, the housings 9 and M- are connected to a bolt 25, which is firmly seated on the housing 9 and is rotatably mounted in a ball bearing of the housing 4-. The movable system 202 of the switch 2 is drawn onto the bolt 25, the fixed part of which, on the other hand, is blocked on the housing 4.

309828 / 033S

Inside the movable housing 9> which is drum-shaped in the illustrated case, is one with the bolt 25 coaxial bolt 24 rotatably mounted, which is fixedly connected to the movable system 205 of the switch 5, while the fixed part of this switch on the housing 9 is blocked.

On the bolt 24 · sits a gear 23, which with a the screw 22 arranged on the shaft 6 having the handle 105 is in engagement. This is necessary because the shaft 6 is at the movable housing 9 is rotatably mounted. The shaft 6 is guided in a slot 104 in the fixed housing 4.

The pointer 21 corresponding to the seat back D is attached to one end of the bolt 24 which passes through the end wall of the movable housing 9 protrudes. The pointer 16 is seated on the end wall 109, see i'ig. 4th

When comparing the i'ig. 4, 5 and 6 can be clearly seen that when the handle 105 is rotated about the geometric axis of rotation of the shaft 6, the pointer 21 pivots and at the same time switch 5 is preset. If, however, the shaft 6 is pivoted like a lever in the slot 104, is the housing 9 rotated around the bolt 25 while at the same time switch 2 is preset.

Thus, with a single handle 105, which alternatively moves the shaft 6 in the housing 9 and at the same time through this shaft in the housing 9 takes the bolt 25 with it, the same purpose is achieved as described above.

If the shaft 6 is used as a lever, its level setting can be secured with a lock, e.g. B. a ball lock, as it is normally used in switches finds.

The pivoting of the pointer 21 can be limited by a pin 27 fastened on the end wall 109 of the movable housing 9

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be while pivoting the shaft 6 when this as a lever is actuated, limited by the Winkelö:; fnuxj.g of the slot 104 will. The housing 4 can have brackets 26 drilled through for attachment to the chair frame.

In i'ig. 4 is a respectively changed setting of the shaft 6 with handle 105 and thus the pivotable housing 9 and the pointers 16 and 21 shown with dash-dotted lines, the changed pointer positions in turn with 116 and 121 are designated.

Claims : 309828/0395

Claims (1)

Ans p rüche f 1.) Dental treatment chair, its seat and backrest movable with one another and with respect to the lower part of the chair are mounted so that the corresponding angular position of the seat and backrest as well as the angular position can be changed to the vertical axis of the lower part of the chair is by motor drive, that of program control means is controlled, characterized in that the program control means is a manually operated preselection device with pointers (16, 21) for taking place simultaneously with the program setting of the preselection device has optical representation of each chair setting. 2. Pre-selection device for dental treatment chairs Claim 1, characterized in that the pointers (16, 21) showing the profile of the seat (S) and the backrest (D) in any desired programmable position are directly or indirectly connected to the manual pre-selection device, so that the position of the chair (P) is played back at the same moment it is programmed. $. Pre-selection device according to claim 1 and / or 2, characterized by position selectors (2, 5) ₅ which are functionally connected to the program control means, a bearing housing (4) fastened to the frame of the chair (P) and a bearing housing (4) which is movable relative to the bearing housing (4) further bearing housing (9) on which the respective selectors (2) and (5) are mounted, the movable bearing housing (9) connected to an adjusting member (3) of the selector (2) via a setting of the selector (2) as a result Actuation of the adjusting member (5) a mandatory movement of the movable bearing housing (9) determining kinematic chain is connected to the fixed bearing housing (4). 309828/0395 4. Apparatus according to claim 3? characterized in that the movable bearing housing (9) is rotatable about an axis at least with the axis of one (5) of said selectors matches and that z. B. the pointer (16) for the chair seat (ο) directly or indirectly on the other bearing housing Q) is attached, while the other pointer (21) is attached to a urgan of the kinematic liette that from the shaft designed as a shaft and with a handle (105) provided adjusting element (6) of the movable selector (5) is drivable. 5- device according to claim 4, characterized in that the movable bearing housing (9) is connected to a hub (8) which is rotatably mounted in the fixed bearing housing (4) and through the adjusting member (3) of the fixed selector (2) designed as a drive shaft by means of a toothed chain (10, 11, 12, 13; 14, 15) can be driven, while an in the handle (8) rotatable sleeve (7) from the shaft (6) of the movable selector (5) by means of gears (17, 18; 19, 20) can be driven, which are installed in the movable bearing housing (9) and engage with one another, the pointer (16) at one end of the handle (8) and the pointer (21) at the corresponding end of the sleeve (7) is attached. The patent attorney 309828/0395 Blank page