DE1804912A1 - Slide and electrode for changeable thin-layer slide resistance - Google Patents

Description

Case 72

Mippon Xogaku ICK.

7, 1-chome Nihonbashi-dohri, Chuo-lcu

Tokyo / Japan

Slider and electrode for changeable thin film Sliding resistance

The invention relates to a variable sliding resistor for measuring instruments, in particular the invention relates to the construction of a slide and tapping electrodes, from which the resistance is composed and which the layer for low resistance values of a changeable Forming thin-film resistance for measuring instruments, the changes in the resistance value as ideally gradual Changes have been made and the steady change in the resistance values in steps can be maintained if the Number of sliding movements is increased

Corresponding to the usual tap electrodes and the slide in the case of a thin-film slide resistor for measuring instruments, the resistance value changes temporarily when the slide touches or contrasts with the electrode on the high resistance side.

The invention eliminates these disadvantages and allows

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BATH ORIGINAL

Setting a stable resistance value,

The invention is described in detail below using an exemplary embodiment and through drawings in which the following is shown:

in Fig. L is a plan view of an embodiment of the invention with the representation of an electrode;

in Fig. 2 top and side views of an embodiment »form the invention ait finer representation tints slide »divides;

in Pig. J to 7 pictures? of cuts through slide parts more common Design type.

With the Figs. 3 to 7 first conventional versions are shown of a variable thin-film slide resistance for measuring instruments of Anzapfelektroden and slides v / ground.

In FIGS. 3-7 there is a base plate IO with tap electrodes 9 and a slide 8 drawn. The tapping electrode 9 is generated on the base plate 10 by sputtering or other techniques. The slide 8 is along a not shown Lead over the tap electrodes 9 out. The width the sliding surface of the slide is dimensioned so that it can be used in any position with more than two adjacent tapping electrodes Has contact · Show sliding movements as the number of * increases the sliding surface of the slide and the sliding surfaces of the Tapping electrodes wear and tear, and the original The rectangular shape of the electrodes is rounded off to the shape shown in FIG. 4 * Duration preserves the sliding surface of the slide and the sliding surface © of the tapping electrode make contact two tapping electrodes in the position shown in Fig. 4 ^ However, if the wear on the sliding surfaces increases (Fig. 5), there is contact with only one tapping electrode,

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-3-

or the part of the slide, which is convexly shaped due to wear, touches the base plate and does not come into contact with the tapping electrodes (Fig. 6), as a result of which irregularities occur relatively soon in the change in the resistance values. In particular if the slide has more than three tap electrodes touched (Fig. 7), the above-mentioned position and the spaces are created earlier. On the other hand, if the Electrode has a resistance, it is necessary to choose such a structure that more than two or as many electrodes as possible, namely more than three electrodes are touched by the slide at the same time. Otherwise, appearances occur on how that the resistance value increases temporarily when the slide in the direction of decreasing resistance value is moved, and the resistance value is temporarily reduced when the slide in the direction of increasing resistance value is moved when the slide touches or lifts off the electrode on the side of higher resistance. ·

The aim of the invention is to be seen in the fact that a structure is provided for the slide and the electrode for heßinstruments with which it is possible to maintain the smooth, gradual change in the resistance value, regardless of the increase in the number of sliding movements, and which is suitable for bringing about the ideal step-like change in view on changing the resistance value, so that a better one Building a resistance is achievable.

According to the invention, the change in the resistance value of the changeable Thin-film slide resistor for measuring instruments, especially the change in the resistance value of the slide and the tapping electrode, the lower resistance layer Resistance value forms, ideally run in steps without the resistance value increasing temporarily when the slide runs in the direction of the decreased resistance value, or decreases temporarily when the slide increased in the direction Resistance value is moved; at the same time it is possible

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BADORiGiNAl.

It is possible to maintain the stable, gradual change in the resistance value for a long period of time when the slide movements are constant, and the electrodes according to the invention can be manufactured without increasing the manufacturing costs.

The invention is characterized in that in a slide and a tapping electrode from the resistance layer for formation a layer of low resistance in a variable thin film resistor for measuring instruments, the contact of the slide is designed as a narrow contact and a large number of slide contacts aligned parallel to one another are, the tapping electrodes are arranged in parallel within the path of the slide that at least one of the both directions of the row of contacts, that of the spring contact of the small contact of the slide and the direction of the row of electrodes is formed, are inclined against the perpendicular to the direction of movement of the slide, and that the direction of the row of contacts and the direction of the electrode row are inclined relative to each other so that each of the arranged in parallel small contacts of 4th slide always with more than two adjacent ones Electrodes is in contact.

Fig. 1 shows an embodiment of the invention with one row 1 from contacts 11 to 17; 4 and 2 are electrode members made of a low resistance layer, and 2 is made of the Tapping electrode parts a to k; 3 is a layer with higher resistance and connects all electrodes with one layer higher resistance; 5 is a base plate for receiving the electrode and the resistive layer; the dash-dotted ■ Line shows the trajectory of each contact · In this embodiment the slide is moved around the center of the base plate} the slide consists of the spring material 6 according to FIG Figure 2 is held by the holding member 7; a circular arc 1 at the end of the spring 6 forms the row of contacts 11 to 17. The direction of the electrodes of the tapping electrode part from a to k of the electrode part 2 is, as shown in FIG. 1, oblique to the

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Direction of the contact row 1 of the slide set.

.1

The angle of inclination is set so that any contact 11 to 17 makes contact with more than three adjacent electrodes can get.

In other words, when these contacts come into contact with the electrodes between the contact 17, the outermost one End on the side of higher resistance values arranged in parallel Contacts of the slide is arranged, and the contact 11, which is at the extreme end on the side of low T / resistance values arranged in parallel contacts of the slide are three or four electrodes, including the position-dependent electrodes, are present, and more than two contacts are always present on the adjacent two Electrodes and the interval of said electrodes between electrodes 11 and 17, and at least one contact is is present and is touched on each of the electrodes.

The structure of the embodiment of the invention is indicated above, and therefore when the row of contacts 1 is in the position indicated by the arrow in Fig. 1, four electrodes d, e, f and g are ready between the contacts 11 and 17, and four contacts 11, 12, 13 and 14 are between the electrodes d to e, and the four contacts 13, 14, 15 and 16 are between the electrodes e to f, and the three contacts 15, 16 and 17 are between the electrodes f to g. As can be seen from the above, each contact 11 to 17 is in contact with at least three electrodes, and at least two contacts are present on the adjacent electrodes and at the intervals of said electrodes in any position of the slide, as regards the changes in the resistance value between the electrode 4 and the slide concerned, you will contact 17 when the row of the contacts which occupies in Fig. 1 by the arrow bezeicn · netc position high on the side of the resistance values

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connected to or disconnected from electrode g to reflect the changes of the resistance value, but the resistance value of the electrode 2 is much lower than that of the resistance layer 3, and the changes in the resistance value in this embodiment of the subject invention can be disregarded even if the electrode 2 should consist of a resistive layer that is completely has unignantable resistance values.

Needless to say, the structure in which some of these contacts touch at least three electrodes and at least two contacts on the adjacent electrodes and the interval of these electrodes, is maintained, also vienn each of the contacts 11 to 17 of the facility, such as it is drawn in Fig. 1, are moved in the direction of the electrodes and are provided in this position.

If the electrode, »wiesle in the embodiment of the invention is indicated by vacuum vapor deposition, sputtering or stranding generated, the service life has no relation to the shape of the electrode to be formed, and it is therefore possible to use the electrodes without burdening the manufacturing method.

P at © κt aasBruch :

909628/1043 bad original

Claims (1)

1604911 -y- Patent claim: Slider and electrode for changeable thin non-sliding resistance for measuring instruments, with contacts between a slide and a tapping electrode, indicated by a Resistance rail (3), which has a lower resistance layer can form, the contact being made to the slide by small contacts (11-17), which in large numbers on the Slides are arranged in parallel, and where the direction of the contact row (1) and the direction of the electrode of the electrode row, which is arranged parallel in the path of the slide, are inclined towards one another and finally any one the parallel arranged small contacts of the slide «constantly with more than two electrodes of the neighboring electrodes can be in contact. * 909825/1043 BATH ORIGINAL