EP0168648B1 - Schaltwalze - Google Patents

Schaltwalze Download PDF

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Publication number
EP0168648B1
EP0168648B1 EP85107416A EP85107416A EP0168648B1 EP 0168648 B1 EP0168648 B1 EP 0168648B1 EP 85107416 A EP85107416 A EP 85107416A EP 85107416 A EP85107416 A EP 85107416A EP 0168648 B1 EP0168648 B1 EP 0168648B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
spring
fine
switching
ratcheting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85107416A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0168648A1 (de
Inventor
Werner Haake
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19848419101 external-priority patent/DE8419101U1/de
Application filed by Individual filed Critical Individual
Priority to AT85107416T priority Critical patent/ATE37250T1/de
Publication of EP0168648A1 publication Critical patent/EP0168648A1/de
Application granted granted Critical
Publication of EP0168648B1 publication Critical patent/EP0168648B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams
    • H01H19/623—Adjustable cams

Definitions

  • the invention relates to a shift drum according to the preamble of claim 1.
  • Switching drums of this type are widely used in technology and are used to trigger certain switching processes as a function of a moving part.
  • Such devices can, for example, with roller shutters or the like. be connected to control the end position of the gate in one position or another.
  • the actual shift cylinder is connected to the drive part by means of a fine catch, which enables the shift cylinder to be adjusted by hand, but ensures safe driving of the shift cylinder when driven by the drive part.
  • the connection between the drive part and the switching cylinder is made by external small compression springs which press the actual switching cylinder with its fine pitch into the fine pitch of the drive part. The frictional resistance achieved in this way can be overcome by hand, but guarantees that the shift cylinder is carried along perfectly from the drive part.
  • a generic shift drum is described in DE-A-19 58 681, in which a hood-shaped part is rotatably connected to a drive part, wherein spring-loaded balls are arranged in the hood-shaped part, which have a fine pitch on the end of the shift cylinder facing the hood-shaped part stay in contact.
  • the hood-shaped part is held by an external thrust washer. This exposed limiting disc preventing axial movement of the hood has the disadvantage that it can be lost, i.e. can come loose and the entire function of the entire shift cylinder becomes unusable.
  • the invention has for its object to provide a shift drum which is actuated via a simple normal fine-pitching and in which a single compression spring ensures the contact of the fine-pitching, it also being necessary to ensure that this compression spring can be installed as simply as possible, and can be produced economically is and still does not lose its functionality over a long period of use.
  • a rotary switch for alternating current is known, which is not comparable in its operation and function with a shift drum.
  • the known rotary switches are fixed in their switching position, with the switch known from DE-C-817 318 this being achieved in that a locking cam on the rotating part can snap into a fixed locking cam on a bearing plate, the locking cam on the rotating part opposing the Restoring force of a spring can move.
  • a shift drum is fundamentally constructed differently, because a driven shift drum is rotatable in itself, this rotatability and the shift transmission taking place by means of a fine engagement of two mutually movable components.
  • the installation of a compression spring in a cylindrical housing of a rotary switch has been known since 1951, but has not given any suggestion regarding the structural design of a shift drum, since the basic structure of the two devices is very different.
  • a further shift cylinder can be connected in the simplest manner to the first shift cylinder in the axial direction of the drive shaft.
  • a first shift cylinder controls a switching contact, which switches the drive motor on and off.
  • the switching cam attached to the second switching cylinder can be used as a safety switching cam, so that if the first switching cam - for whatever reason - did not work, the switching cam mounted on the second switching cylinder takes over the function.
  • An additional safety unit can then be arranged on a third switching cylinder or, for example, additional functions can be controlled, such as warning displays or the like. Due to the basic structure of the shift drum according to the main claim, everyone is these nested switching cylinders are securely connected to each other and their functionality is ensured.
  • the switch cam which is arranged on the first switch drum for the working current, does not lead to the system being switched off, the second switch cam comes into contact with a safety contactor, which ensures that the current is fully interrupted.
  • connection between the first cylinder part 3 and the drive part 1 takes place via a fine grid 5, which is provided both at the front end of the first cylinder part 3 and on the associated surface of the drive part 1, here this fine grid is designed in the form of a crown ring.
  • the axis 2 passes through the first cylinder part 3 and can theoretically rotate freely within the cylinder part 3.
  • the actual switching cylinder 4 is formed by a hood part 6, which is connected in a rotationally fixed manner to the first cylinder part via a tongue and groove arrangement 7 which can be seen in the drawing, the tongue and groove arrangement 7 extending in the longitudinal axis of the switching cylinder 4 .
  • the hood part receives in its interior an abutment part 9 connected to the axis 2, which serves to support a spring 10, which is supported at the other end on the front ends of the first cylinder part 3 and thus causes the first cylinder part 3 with its fine engagement into the Fine engagement of the drive part 1 is pressed.
  • the spring can be equipped with a slot opening, which is then pushed onto the pin 11 of the abutment part 9 or the spring 10 can be provided with a bore through which the pin 11 of the abutment part 9 is inserted, the abutment part 9 then being inserted in the center after insertion the axis 2 is fixed material and / or non-positive.
  • a double shift drum 4, 4a is shown in FIG. 2 using the same reference numerals.
  • a second cylinder part 3a of a second shift drum 4a is connected to the hood part 6 of the shift drum 4 with the interposition of a fine pitch 5a, which in the same way as described with reference to FIG Abutment part 9a is pressed onto the cylinder part 3a.
  • the hood part 6a opens into a setting cam 12a which rotatably surrounds the setting cam 12, one or more switching cams also being attached to the outside of the cylinder part 3a and used for the safety circuit.
  • the cylinder part 3 or 3a can be adjusted accordingly, independently of one another, so that the switching cams provided on the cylinder parts 3 and 3a can be adjusted relative to one another.
  • the switching cam arranged on the cylinder part 3a in the direction of the circular movement of the overall arrangement, e.g. is set backwards, so that it forms a safety switch cam, which then comes into action when the switch cam arranged on the cylinder part 3, for whatever reason, has not led to the device being switched off.

Landscapes

  • Gear-Shifting Mechanisms (AREA)
  • Mechanical Operated Clutches (AREA)
  • Transmission Devices (AREA)
  • Switches With Compound Operations (AREA)
EP85107416A 1984-06-26 1985-06-15 Schaltwalze Expired EP0168648B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85107416T ATE37250T1 (de) 1984-06-26 1985-06-15 Schaltwalze.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8419101U 1984-06-26
DE19848419101 DE8419101U1 (de) 1984-06-26 1984-06-26 Schaltwalze
DE3436930 1984-10-09
DE19843436930 DE3436930A1 (de) 1984-06-26 1984-10-09 Schaltwalze

Publications (2)

Publication Number Publication Date
EP0168648A1 EP0168648A1 (de) 1986-01-22
EP0168648B1 true EP0168648B1 (de) 1988-09-14

Family

ID=25825479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107416A Expired EP0168648B1 (de) 1984-06-26 1985-06-15 Schaltwalze

Country Status (2)

Country Link
EP (1) EP0168648B1 (enrdf_load_stackoverflow)
DE (2) DE3436930A1 (enrdf_load_stackoverflow)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE828418C (de) * 1948-12-21 1952-01-17 David Burkhardt Schaltwalze
BE501881A (enrdf_load_stackoverflow) * 1950-03-18
DE1958681A1 (de) * 1969-11-22 1971-05-27 Starkstrom Schaltgeraetefabrik Rasteneinrichtung fuer Walzen-,Nockenschalter und sonstige Einrichtungen,bei denen eine klar definierte Stellung gerastet werden muss
DE8007933U1 (de) * 1980-03-22 1984-03-01 Frömag Fröndenberger Maschinen-u.Apparatebau-Gesellschaft mbH, 5758 Fröndenberg Vorrichtung zur Betätigung von Stromschaltern, insbesondere von Steuerstrom-Endschaltern
DE3238660C2 (de) * 1982-10-19 1984-08-23 Standard Elektrik Lorenz Ag, 7000 Stuttgart Rastwerk, insbesondere für Stufendrehschalter

Also Published As

Publication number Publication date
EP0168648A1 (de) 1986-01-22
DE3436930A1 (de) 1986-01-02
DE3565022D1 (en) 1988-10-20
DE3436930C2 (enrdf_load_stackoverflow) 1987-05-27

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