DD269486A1 - FOOT SWITCH, ESPECIALLY FOR OPERATING MICROSCOPES - Google Patents

Abstract

An ergonomically favorable, convenient triggerable, multifunctional foot switch is realized by separate parts (2, 3) of the support surface are provided for forefoot and heel, which are tilted to each other, the heel divider (2) of the support surface about a substantially vertical axis Direction of the lower leg is pivotally, on the base plate (1) and the front part (3) of the support surface in the starting position gegenueberliegenden cam (8, 9) are arranged, wherein a cam (9) has inclined Kurvenflaechen, one with the support surface (2 , 3) connected lever (6) is provided, which acts on rotation of the bearing surface (2, 3) and additional foot pressure by sliding the cam (8, 9) horizontally on Betetigungsorgane (12, 13). Applicable to surgical microscopes. Fig. 1

Description

Title of the invention ι Fues switch, in particular for surgical microscopes Field of application of the invention!

The invention is applicable to the selective triggering of multiple electrical switching functions with an operating device. A preferred application lies in the omission of switching functions in surgical microscopes, in particular in verbal commands and speech recognition triggered functions.

Characteristic of the known technical solutions:

Various embodiments of foot scanners for surgical microscopes are already known. Rocker-type constructions are preferably used with which two switching states can be realized. For wasting a greater number of switching functions several foot switches are strung together. As a result, the actuation, especially in the absence of visual control, is difficult and requires a lot of space.

In the realization of additional switching functions by tilting the foot over an axis parallel to the soles of the soles, the ergonomically unfavorable movements quickly lead to fatigue and cramps, furthermore it is important that the weight of the leg or body rests on a firm support. That is, however,

6246

in rocker-type constructions as well as in the stabilization of the kick bottle by strong spring force, in the Widei spruch to the demand for a finely movable mobility of the foot. When overcoming large resistances in the actuation of switching functions, an undesirable change in body posture may possibly be accepted.

In the absence of fines, undesirable loss of switching functions may occur.

Aim of the invention!

The aim of the invention is an ergonomically favorable, convenient Ausloesbarer foot switch.

Explanation of the essence of the invention

The object of the invention is the realization of a foot switch, which triggers several switching functions and yet feinfuehlig and ergonomically designed is favorable

 The object is achieved according to the invention by a foot switch, wherein a movable support surface is provided for the foot, which acts on Betetigungsorgane perpendicular, which are arranged on a base plate and is held by spring action in a starting position, thereby, that for Vorderfuss and heel separate Parts (2,3) of the bearing surface are provided which are tilted towards each other, the heel part (2) of the bearing surface is pivotable from a substantially vertical axis in the direction of the lower leg, on the base plate (1) and the front part (3 ) of the bearing surface in the starting position are arranged opposite each other lying cam (8,9), wherein a cam (9) has inclined Kurvenflaechen, one with the bearing surface (2,3) connected lever (6) is provided, which upon rotation of the support surface (2, c, and additional foot pressure by slipping the cam (8,9) on each other horizontally on Beteti-

6246

acting organs (12,13) acts.

The invention causes a virtually force-free change of direction and the actuation of a plurality of switching functions of a heavy load on the forefoot by the weight of the leg or the body weight.

Ausfuehrungsbeiepiel The invention is described below with reference to the schematic Illustrations explained in more detail.

It show

Fig. Ii A view of the erfindurvjsgemaessen switch Fig. 2: A side view Fig. 3.1 -4: Different positions and switching states

On a base plate 1, a rotatable about a vertical axis 4 support plate 2 with a back limiting edge 2 'is arranged. With the support plate 2 is a tread plate 3, rotatable about an axis 5, connected, the limiting edges 3 'has. Furthermore, a firmly connected to the platen 2 lever 6 is provided. The support plate is held by a spring, not shown, in the center position. A spring 7 supports the tread plate 1. On the front side of the base plate 1, a cam-like elevation B is provided in the center, which faces a cam-like elevation 9 on the tread plate 3. never cam-like elevation 9 has laterally two inclined surface 9 'and 9' 'on. At the edge of the base plate 1, a micro-probe 10 with a bumper 10 'is provided. At the tread plate 3 is above the bobbin 10, a spring 11 is provided

 On both sides of the lever 6 more micro-switches 12 and 13 are provided with bumpers 12 'and 13'.

When pressing the foot switch is the operating foot 14, as shown in Figure 2, with the heel on the support plate 2 and with the forefoot on the tread plate 3. Dae weight of the leg or ' of the body (with standing operation) lies thereby on the support plate 2. By the edge

6246

2 'is ensured that the vertical axis 4 almost passes through the Fußknoechel.

The weight of Vorderfueses is received in the initial position by spring 7. When depressing the tread plate 3 against the force of the spring 7 touches the cam 9 with its vertex the cam β and spring ti presses on the bobbin 10 'of the switch 10. Thus, the position shown in Fig. 3.2 is reached and the contacts of the switch 10th are closed. In this position, various ancillary equipment, such as e.g. the microphone of a voice analyzer for command control, switched on. Further switching operations for triggering further functions, e.g. Movements in x, y and z, rotations, magnification adjustment, brightness control u.a. are prepared by turning the foot to the right (action in the positive direction) and to the left (action in the negative direction)

 Further pressing with the Vorfuss allows the cam 9 on the inclined Auflageflaechen 9 '' and 9 'slide and thus causes a rotation of the tread plate 3 and the support plate 2 from the middle position out to the stop of the lever 6 on the broom 13' and. 12 ', with which the switches 13 and 12 actuated (Figures 3.3 and 3.4) and the switching functions are triggered.

6246

Claims (2)

-S claim 1. foot switch, in particular for surgical microscope «, wherein a movable Auflageflaeche for the foot ναι- seen acting vertically on control elements, which are arranged on a base plate, and is held by spring action in a starting position, characterized in that for Vorderfuise and heel separate parts (2,3) of the support surface are provided, which are tilted to each other, the
Heel part (2) of the bearing surface around a vertical
in the western axis lying in the direction of the longitudinal axis of the lower jaw is rotatable, on the base plate (1) and the front part (3) of the support surface in the initial position gegenueberliegende cam (8,9) are arranged, wherein a cam (?) inclined Curved faces, one with the support surface
(2,3) connected lever (6) is provided which acts upon rotation of the bearing surface (2,3) and additional foot pressure by sliding the cam (8,9). 2. foot switch according to claim 1, characterized in that the pivot axis of the heel part (2) substantially intersects the Fußknoechel. 6246