DD202344A5 - ZEIGERMESSGERAET - Google Patents

Abstract

The pointer measuring device, such as pressure gauges, thermometers, hygrometers or the like, has a contact device (1) of one or preferably at least two staggerable contact and switching elements (7) and is arranged at a distance to a scale carrier (dial 4) of the pointer measuring device. This contact device (1) has adjustable switching point pointers (18) which interact indirectly with the measuring-value pointer (5) of the pointer-measuring device. The contact device (1) is designed as a unit which can be fixed on the measuring device housing (3) or on the measuring device dial (4), and each of their contact u. Switching elements (7) has an indirectly v. Measuring indicator (5) actuatable switching element (6), preferably micro-switch, on. D. Kontaktvorrichtg. (1) by its own, a simultaneous terminal space (31) forming housing (25) lagemaessig on Zeigermessgeraetegehaeuse (3) by a fixing ring (27) releasably set o. Is directly on the dial (4) by suitable Fastening means, such as carrier plate (24), mounting foot (37) and screws (38) held, wherein in both types of fastening, the attachment points (24, 29, 30 or 24, 27, 38) are spaced from the Meßwertzeiger-axis of rotation in the dial plane , Each microswitch (6) is actuated via shift lever (13), shift cam (11), shift piece (13a) and spring shift lever (14) with shift piece (15) as a function of the measured value pointer (5) and the shift point hands (18).

Description

Point measuring device Field of application of the invention,

The invention relates to a Zsigermeßgerät with a spaced apart from a dial of the Zeigermeßgerätes, cooperating with the Meßwertzsiger and adjustable Schaltpunktzeiger possessing contact device of one or at least two stackable contact and switching elements.

Characteristic of the known technical solutions

In measurement and control technology, there are many control, monitoring and control tasks in which must be switched depending on the amount of certain Heßwerte contacts »The measured values are detected in many cases by pointer gauges with rash angles of 270. A contact device for such a meter must allow a switching function at any point of the pointer path and to be as versatile as possible, have a high switching capacity.

In the previously known measuring devices switching modules with low-power contacts are used for this, which disadvantageously require a downstream amplifier relay.

Object of the invention

The object of the invention is to increase the field of application of known display devices and to ensure a greater ability to combine.

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The object of the invention is to retrofit a built-up of the function only as a display instrument as a combined display and switching device, without having to make changes to the display device. In this case, this supplement should be formed by a simply constructed, easily and quickly assembled and a small switching gear and low driving torque having contact device.

This object is achieved in that the contact device formed as a meter housing ode.r on the Meßgerätezifferblatt festlegbare unit and each of their contact and switching elements indirectly actuated by a measured value indicator switching element, preferably micro-switch having.

In this case, the contact device in a simultaneously forming a clamping space housing LagemäSig set and preferably with this housing on the front side of the meter housing by a measuring device housing side mounting ring, such as i <3emmring, threaded ring od. Bayonet lock ring, be releasably held.

In a further embodiment of the invention, the contact device with a stackable contact and switching elements ¹ bearing plate od at an inside projection of the contactor housing by screws. Like. Held at a distance to Meßgerätezifferblatt.

Advantageously, the contact device on one of their stackable contact and switching elements bearing plate on a mounting foot, with which they od by screws. Like., Is detachably fixed on the Meßgerätezifferblatt.

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wherein the contact device attachment point is arranged in dial plane at a distance to MeSwertzeiger rotation axis.

The housing is designed with a detachable, angular Abdeckten to access the Klemmraura pot-shaped and has at the pot edge over a circumferential, applied to the front side of the meter housing and covered by the mounting ring mounting flange.

The pointer measuring device is further distinguished by the fact that attached to the Meßgerätezifferblatt contact device is covered by a hood-shaped, fixable on Meßgerätegehäuse housing and that the housing consists of a clear plastic.

A particularly advantageous embodiment of the Zsigermeßgerätes is that the stackable, by means of positive connection against each other position-fixed contact and switching elements each have an angular support body extending parallel to the dial plane bearing leg and angled, preferably rectangular, directed to the dial plane receiving and bearing part and recording - And bearing part of the microswitches adjustable in the distance to the measured value and switching point pointer axis of rotation stores and shows with its switch plunger in the direction of rotation axis.

Here, the Meßgeräteziffer sheet adjacent carrier body on the support plate is conveniently od by screws. The like. Attached.

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According to a further feature of the invention is at the averted the liikroschalter free end portion of the bearing leg of each support body about a coaxial with the Meßwertzeiger axis of rotation axis of rotation standing under the action of a spring and held against an adjustment of a switching point pointer lever with switching piece, such as roll, dome od. Like., Rotatably mounted, which is provided on a switching curve of a bearing journal held on the contact piece and displaceable in dependence on the Heßwertzeigerbewegung by Mitnehmerstifΐ transversely to the dial plane and its switching piece with a fixed to the receiving and bearing part spring lever, with a switching piece with the microswitch cooperates, is in operative connection.

Preferably, a drag lever carrying a driving fork via the measured value pointer and the driving pin cooperating with the switching levers is provided on the rotation axis.

It is advantageous if a proximity sensor, pneumatic element or the like is provided as the switching element.

The contact device according to the invention with integrated switching element, preferably micro-switch, forms a switching module, which can easily be attached to already manufactured or in-service pointer measurement devices, so that the measuring device can subsequently be converted into a display and switching device, without causing it Changes to the meter will be required. The contact device can be attached to the meter housing with its own housing or arranged directly on the dial of the meter.

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This switching module has a favorable switching hysteresis and requires only a small drive torque, which is provided by the meter pointer in a secure manner. The retrofittable unit and the integrated micro-switch are considered as two independent inventions and can therefore be used individually, but they form in the commonality an optimal switching module for a variety of measuring instruments »

Exemplary Example

Reference to the drawings embodiment examples are explained according to the invention. Showing:

Fig. 1: a partial longitudinal section through a contact device with integrated micro-switches, which can be fixed with a housing as a unit to a pointer measuring device;

Fig. 2: a side view of the same contact device, which can be fixed with a mounting foot on the dial of the pointer measuring device.

The contact device 1 according to the invention for pointer measuring devices 2, such as pressure gauges, thermometers, hygrometers or the like, is designed as an assembly which can be subsequently fixed on the measuring device housing 3 or on the measuring device dial (scale carrier) 4, and with integrated, indirectly actuated by the measured value pointer 5 of the indicating measuring device 2 Switching element 6, preferably micro-switch equipped.

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The contact device 1 has an _f preferably at least two stackable contact and switching member 7, each having an angular support body 8, the bearing leg 8a extends parallel to the dial plane and its perpendicular thereto directed angle leg as a receiving and bearing part 8b for each switching element. 5 serves, which od in it or by suitable fastening means, such as screws, clamps. The like., Is attached einjustierbar.

The stackability of the two superimposed and held with distance to MeSgerätezifferblatt 4 carrier body is preferably achieved by positive engagement by the carrier body 8 by geometric shape, such as tongue and groove connection 9, interlock. Also, the carrier body connection by screws, rivets od. Like. Perform.

On the free end of the bearing leg 8a each carrier body 8, a switching element IO is held adjustable with a switching cam 11, and this switching piece 10 summarizes in the region of the switching cam 11 a rotation axis 12 therethrough, which is rotatably supported in the bearing leg 8a. The switching cam 11 runs around the axis of rotation 12 in the manner of a screw thread. To the rotation axis 12 of the other, a shift lever 13 is freely rotatably mounted, which is connected to the switching cam 11 by conditioning in kraftschlüssiger'Wirkverbindung. This shift lever 13 has in extension of the axis of rotation 12, a contact piece 13 a, such as scooter roller, switch head od. Like., With which it acts on a spring shift lever 14 (abuts). The spring shift lever 14 is supported by a length end on the contact piece 13 a and is with

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its other end of length at the receiving and bearing part 8b

attached near the switching element 6 and also carries a switching piece 15 which is on the switching plunger 6a of the

Switching element (microswitch) 5 acts.

On the top (the Meßgerätezifferblatt 4 farthest) Trägerkörperaufnahme- and bearing part 8b is a bearing plate 15 is fixed to the about a common and coaxial with the axis of rotation 12 extending axis 17 for each contact and switching member 7, a shift point pointer 18 adjustably supports.

Oeder switching point pointer 18 has an adjusting pin 19 which extends to the associated switching piece IO and engages in this, so that by turning the switching point pointer 18, the contact piece 10 rait its switching cam 11 can be adjusted about this axis of rotation 12 in any position of the Meßwertzeigerweges. This adjustment of the switching point pointer 18 via a locking lock 20 with lever 21 and pins 22 which are attached to the switching point pointers 18. Each shift lever 13 is held by a fixed to the bearing leg 8a return spring 23 under frictional engagement with the associated adjusting pin 19.

The übereihandergestapelten contact and switching elements 7 are mounted on a Meßgerätszifferblatt 4 adjacent support plate 24, which also at the same time in the embodiment of FIG. 1 carries a bearing point for the drag lever 34.

With the support plate 24, the contact device 1 in a separate housing 25 made of a transparent material,

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like plastic, attached and forms with this housing 25 which can be subsequently attached to the meter housing 3 assembly.

This housing 25 is formed topfar'cig and has at its peripheral pot edge on a connecting flange 25, with which the housing 25 through a ösfestigungsring 27, such as clamping, screw or bayonet lock ring, the Meßgerätegehäuses 3 at the pointer measuring device 2 with the interposition of a sealing ring 23rd can be attached.

The support plate 24 carrying the contact device 1 is fixed by screws 29 or the like to an inside projection 30 of the housing 25, so that the contact device is at a distance from the meter dial 4.

The housing with accommodated therein contact device 1 simultaneously forms a clamping space 31 for electrical connection with the switching elements (microswitches) 6. This terminal space 31 is externally fixed by a releasably secured to the housing 25 and at the same time an input or, outlet connector 32 supporting cover 33 accessible in angled form.

At the protruding from the support plate 24 axis of rotation 12, a drag lever 34 is attached, which one via the Meßwertzeiger. 5 'has engaging Mitnehmergaber 35 and a cooperating with the switching levers 13 driving pin 35 carries.

This contact device as a separate unit can be retrofitted to a variety of pointer gauges.

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be brought. For this purpose, the mounting ring 27 is removed from the meter housing 3 and also removes the Meßgeräteziffeblatt 4 overlapping lens. Thereafter, the housing 25 of the contact device is set with its connecting flange 26 on the housing front side and then connected by the housing 25 in the flange area and the housing 3 comprehensive mounting ring 27 with the Meßgerätegehäüse 3. At the time of fitting (attaching) this unit simultaneously engages the driving fork 35 via the Meßwertzeiger 5, whereby the connection between the display and the switching device is given and thereby the previous display device has been converted into a display and switching device.

The function of the subject invention is explained below with reference to FIG. 1:

The movement of Meßver Metronome 5 is transmitted via the Mitnehmergabel 35 on the drag lever 34, which in turn now passes this pointer movement via the driving pin 36 on the shift lever 13.

The force applied by the return springs 23 to the driving pin 36 shift lever 13 are thereby rotated according to the rotational movement of Meßvvertfinder 5 about the rotation axis 12 and slide on the switching curves 11 of the contact pieces 10, according to the setting of these contact pieces 10 by the switching point pointer 18 and thus the position of the switching curves 11 is a lifting movement of the shift lever 13 (a shift in the longitudinal direction of the axis 12) and thereby of the contact piece 13 a, which then actuates the spring shift lever 14, this order

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pivoted its attachment point, whereby the switching element (microswitch) 6 is switched, which then triggers the switching function.

The switching plunger 6a of the switching element (microswitch) 6 is non-positively connected and biased to the switching piece 15 of the spring switching lever 14, so that the force required for the switching operation is relatively small.

When lifting movement of the shift lever 13 in the opposite direction and the voltage applied to the contact piece 13s spring shift lever 14 can go back again, and the switching element (microswitch) 6 is switched again.

In the further embodiment according to FIG. 2, the structure and the function of the contact device 1 according to the embodiment according to FIG. _{1 are} merely differences in the manner of fastening and in the measuring connection "

This second embodiment of the contact device 1 is used to Befestigungsige'n on the Meßgerätezifferblatt 4, in which case the support plate 24 is provided with a mounting foot 37, with which it can be fastened by screws 33 directly to the Meßgerätezifferblatt 4 of the instrument after removing the windscreen. Furthermore, this contact device 1 is equipped without rocker arm 34 and driving fork 35, but this has the Meßvve rtze ige r 5 a driving pin 36 which cooperates with the switching levers 13,

Upper attached to the Meßgerätezifferblatt 4 contact device 1 is after their definition a hood-like.

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Housing made of clear material placed and this corresponding to the housing 25 on Meßgerätegehäuse 3 attached.

It is of course within the scope of the invention, the switching element 6 od of a proximity sensor, pneumatic element. Like. To form.

Claims (14)

09/15/1982 240116 3 " ¹² - ^5o848 / ^is Invention sanction 1. Pointer with a arranged at a distance to a dial of the Zeigermeßgerätes, cooperating with the Meßwertzeiger of Zeigermeßgerätes and adjustable Schaltpunktzeiger possessing contact device of one or at least two stackable contact and switching elements, characterized in that the contact device (1) as a on Messgerätegehäuse ( 3) or on the Meßgerätezifferblatt (4) fixable structural unit is formed and each of its contact and switching elements (7) indirectly indirectly by Meßwertzeiger (5) operable switching element (6), preferably micro-switch has. 2. Pointer measuring device according to item I ₁ gekannzeichnet characterized in that the contact device (1) in a simultaneously a terminal space (31) forming the housing (25) positionally fixed and preferably with this housing (25) on the front side of the Maßgerätegehäuses (3) by a measuring device housing side Fixing ring · (27), such as clamping ring, screw ring or Ba ^ onettverschlußring, is releasably held (Fig. 1), 3. pointer measuring device according to the points 1 and 2, characterized in that the contact device (1) with a stackable contact and switching elements (7) carrying plate (24) on a -innenseite; Projection: (30) of the contactor housing (25) by screws (29) od. Like. At a distance from the Meßgerätezifferblatt (4) is held (Fig. 1). 0116 3 ⁱ³ - ^6o 09/15/1982 4. pointer measuring device according to item 1, characterized in that the contact device (1) on one of their stackable contact and switching elements (7) carrying plate (24) has a mounting foot (37) with which they od by screws (38). Like on the Meßgerätezifferblatt (4) can be fixed releasably (Fig. 2). 5 'measuring device according to the points 3 and 4, characterized in that the contact device attachment point (24; 29; 30 or 24; 37; 38) is arranged in Zif f erblattebsrs at a distance to Meßvvertzeiger Orehachse. 5. pointer pouring device according to item 2, characterized in that the housing (25) with detachable, angular cover member (33) for access to the terminal space (31) pot-shaped and the pot edge a circumferential, on the front side of the meter housing (3) and comprising mounting ring (27) überfaßten mounting flange (26). 7. pointer measuring device according to the points i and 3, characterized in that the .am Meßgerätezifferblatt (4) fixed contact device (i) by a dome-shaped, the Meßgerätegehäuse (3) fixable housing is covered. 8. pointer measuring device according to the points 6 and 7, characterized in that the housing (25) consists of a clear plastic. 9. pointer measuring device according to item 1, characterized in that the stackable, by means of positive connection against each other positionally fixed contact and switching element 240116 3. ¹⁵ · ⁹ · ¹⁹⁸² 14 - 50 848/15 (7) he an angular support body (8) with parallel to the dial plane extending bearing leg (Sa) and angled, preferably rectangular, Ziffsrblatteber.s directed receiving and Lagertal (Sb) and at the receiving and bearing part (3b) of the Mikroschaltar ( 5) adjustable in the distance to Meßwert- and Schaltpunktzeiger ürehachGe (17) superimposed and with its Schaltstößei (6a) in the direction of rotation axis (17). 10. pointer measuring device according to item 9, characterized in that the Meßgerätezifferblatt (4) adjacent support body (S) on the support plate (24) by screws od. Like., Is attached. 11. Pointer measuring device according to points 1 and 9, characterized in that at the microswitch. (6) averted free end portion of the bearing leg (8a) of each support body (8) about a coaxial to Meßvvertzeiger axis of rotation axis of rotation (12) under action a spring (23) standing and against a setting pin (9) of a switching point pointer (18) held shift lever (13) with contact piece (13a), such as roller, dome. Like., Is rotatably mounted, Which on a switching cam (11) of a on the bearing arm (8a) held switching piece (10) adjacent and in response to the Meßwertzeigerbewegung by a driver pin (35) is provided transversely to the dial plane and with its contact piece (13a) with a recording and bearing part (3b) fixed spring switching lever (14 ), which cooperates with a contact piece (15) with the microswitch (S), is in V / irkverbindung. 1 fi 1 1 C * 15.9.1982 UIID O- 15 - 60 848/15 12. pointer measuring device according to item 11, characterized in that on the axis of rotation (12) with a driving fork (35) on the Meßwertzeiger (5) cross and cooperating with the switching levers (13) driving pin (36) supporting rocker arm (34) is provided. 13. Pointer measuring device according to item 1, characterized in that od as a switching element (6), a proximity sensor, pneumatic element. The like. Is provided. For this 2 pages drawings