EP0645789A1 - Contacteur de position - Google Patents

Contacteur de position Download PDF

Info

Publication number
EP0645789A1
EP0645789A1 EP94112684A EP94112684A EP0645789A1 EP 0645789 A1 EP0645789 A1 EP 0645789A1 EP 94112684 A EP94112684 A EP 94112684A EP 94112684 A EP94112684 A EP 94112684A EP 0645789 A1 EP0645789 A1 EP 0645789A1
Authority
EP
European Patent Office
Prior art keywords
switch housing
switch
position switch
switch according
housing
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.)
Granted
Application number
EP94112684A
Other languages
German (de)
English (en)
Other versions
EP0645789B1 (fr
Inventor
Hans-Heinrich Bockhorn
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.)
Hans and Jos Kronenberg GmbH
Original Assignee
Hans and Jos Kronenberg GmbH
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
Application filed by Hans and Jos Kronenberg GmbH filed Critical Hans and Jos Kronenberg GmbH
Publication of EP0645789A1 publication Critical patent/EP0645789A1/fr
Application granted granted Critical
Publication of EP0645789B1 publication Critical patent/EP0645789B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/002—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings wherein one single insertion movement of a key comprises an unlocking stroke and a switch actuating stroke, e.g. security switch for safety guards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0207—Adjustable mounting of casings

Definitions

  • the invention relates to a position switch with a switch housing for attachment to an object which contains the switching mechanism and the electrical contacts and which is provided with a cover cap.
  • Position switches of the type mentioned at the outset are used to trigger switching functions when two bodies move relative to one another in a forcible and tamper-proof manner. It is known that this makes it possible to switch off machines by switching on such switches in the control or load circuits precisely when, for example, a door to the room in which the machine is located is opened.
  • these switches have a switch housing that contains the entire electrical and mechanical switchgear.
  • This switch housing is on one of the two objects that are movable relative to each other, attached to the door frame, for example.
  • a bracket is arranged which has a shape which interacts with the internal switching apparatus of the switch housing, so that only the bracket with its special shape can actuate the switch.
  • switches therefore meet the requirements for extensive resistance to destruction and tamper resistance. To further fulfill these conditions, these switches mostly have a very compact design, which on the one hand prevents universal use and on the other hand makes assembly more difficult. In addition, this is contrary to the desire for inexpensive production.
  • a position switch of the type mentioned at the outset is known, the switch housing of which has an essentially cuboidal outer contour which enables different installation positions.
  • the switch housing is provided with a cover, behind which the screw connections for the connection of the electrical connecting lines are located.
  • the cover serves to cover the screw connections in order to avoid negative phenomena when wetness occurs.
  • the connecting lines are led through a screw connection with a so-called armored pipe thread through the cover into the interior of the switch housing.
  • the connecting cables are fixed at the connections using screw connections. This construction requires a lot of assembly work, because when installing, the connecting lines must first be led through the armored pipe screw connection. Then the connecting cables have to be cut to the exact length in order to be attached to the connections in a complex operation.
  • the cuboid structure allows installation in different installation positions, but largely prevents one flexible use, which is further complicated by the lack of variability in the temples.
  • the invention is therefore based on the object of specifying a position switch which can be produced with less effort, can be used flexibly and is easy to assemble while fulfilling the conditions of resistance to destruction and security against being tricked.
  • the object is achieved in that the switch housing is rotatably and longitudinally displaceable in a fastening part which at least partially encompasses the same and can be fastened in the fastening part.
  • the switch housing has a cylindrical region which is guided axially displaceably in a ring, the ring being rotatably mounted on a mounting plate about an axis lying radially to the ring and with fastening means for the switch housing and for fixing the mounting plate is provided.
  • a second variant provides that the switch housing has a cylindrical region which is introduced in an axially displaceable manner in a bore in a cuboid base body.
  • the base body is slotted on the side in such a way that the bore surrounds the cylindrical area in a clamp-like manner. Furthermore, means for closing the slot with force and fastening means for the base body are provided.
  • a particularly favorable embodiment of the position switch according to the invention provides that the inner diameter of the ring in relation to the outer diameter of the cylindrical region of the switch housing has a size which produces a frictional connection between the ring and the switch housing.
  • Such a configuration enables the position switch to be fixed particularly easily in its installed position.
  • a ball joint is arranged for the rotatable connection between the ring and the mounting plate.
  • the distance between the center dimension of the ring and the center dimension of the mounting hole is such that a predetermined maximum distance between the center dimension of the mounting hole and the end face at the connection end of the switch is maintained.
  • position switches of the type according to the invention have to meet standard regulations. With a precise definition of the distance, the standard-compliant distances can always be maintained. An adaptation to other standard regulations is possible on the manufacturing side with the mentioned design without great effort.
  • a cover cap covering a free access area to the connections can be plugged onto the switch housing.
  • the contacts For most purposes of a switch according to the invention, the contacts must be covered. On the one hand, this can serve as protection against contact and, on the other hand, it can provide protection against aggressive media. Such cover caps usually complicate the assembly to a considerable extent. In the solution according to the invention it is provided that access to the connections is kept free. The connections can be easily reached from all sides and the switch can be connected using a connection cable.
  • the cover cap After establishing the contact connection, which is done with screw connections with a screw connection, the cover cap is put on and thus protection against contact or corrosion is achieved.
  • a particularly favorable embodiment of this solution provides that a threaded connector for tightly screwing the connecting lines is introduced on the end face of the end cap and / or a seal is provided between the cover cap and the switch housing.
  • the cable gland creates a tight connection between the connection cable and the cover cap.
  • the cover cap is sealed against the switch housing by the seal.
  • connection part has a core to which connection plates lying along the central axis of the switch housing are fastened. These connection plates have threads lying transversely to the central axis of the switch housing, into which connection screws can be screwed.
  • the connecting part has an end plate on the side of the cover cap, into which openings for the cable entry are made in the area of the connecting screws.
  • the connection plates are with switch contacts electrically connected.
  • connection screws are transverse to the longitudinal extent of the switch body. So that they are freely accessible after removing the cover, so that the leads leading to the outside can be attached without further difficulty.
  • the assembly is made even easier by the fact that the connecting wires are only to be inserted into the openings and then screwed together. The connection process is then completed with a simple plug-on of the cover cap, the assembly effort being very low.
  • the free access area to the connections is arranged on the side of the switch housing facing away from the switching wheel, screwless clamp connections to the external connection being provided in the connection part. These screwless clamp connections are electrically connected to the switch contacts.
  • a switching wheel is arranged in the switch housing so as to be rotatable about an axis lying transversely to the axial direction. Furthermore, a contact bar actuating the contacts is provided transversely to the longitudinal axis of the switch housing.
  • the ratchet wheel has a driver which corresponds to a driver lug on the contact bar.
  • the ratchet wheel is provided on the circumference with a contour which corresponds to the contour of an actuating part which can be moved tangentially to the ratchet wheel.
  • an opening is provided in the jacket and in the end face of the switch housing facing away from the cover cap, through which the actuating part can be engaged in the switching wheel.
  • the switch part is mounted on one and the actuating part on the other of the relatively movable objects.
  • These objects can be represented, for example, by a door and a door frame. Different installation conditions can be found. So there is a difference whether a sliding door or a door with a door leaf is to be provided with the switch according to the invention. The directions of the relative movement of the two objects to one another thus differ considerably.
  • the two openings in the switch part do justice to these different directions of movement.
  • either the front opening or the jacket opening can be used.
  • the arrangement of the openings is chosen in such a way that the actuating part tangentially engages the ratchet wheel and thus causes the latter to rotate.
  • the ratchet wheel is provided with teeth on the circumference, into which teeth of the actuating part can be engaged.
  • a pawl that can be unlocked by the actuating part is also provided, which, in the locked state, prevents movement of the switching contacts.
  • the position switch can be designed to be largely tamper-proof. If another object is inserted into one of the two openings for the purpose of rotating the ratchet wheel, this will block the tripping of the ratchet wheel.
  • the pawl as a pawl which projects spring-loaded into the area of the teeth can be pressed out of the area of the teeth by the actuating part and is provided with a locking lug, the path of movement of which, when the ratchet wheel rotates, meets a locking rib connected to the switch housing when the pawl protrudes into the area of the teeth.
  • fastening holes in the actuating part which are designed as elongated holes. This makes the adjustment of the position switch even easier, since there is an additional degree of freedom when attaching the actuating part.
  • the switch housing 1 has a cylindrical region 2. Furthermore, a ring 3 is provided which is rotatably connected to a mounting plate 4. The rotation takes place in an axis 5 running radially to the ring 3.
  • the switch housing 1 is inserted with its cylindrical region 2 in the ring 3 and rotatable and axially displaceable therein during an adjustment process. By a Rotation of the ring 3 on the mounting plate 4 can also adjust the angular position of the switch housing 1. All settings can be fixed using locking devices, not shown.
  • a cover cap 6 is provided at one end of the switch housing 1, which is to be referred to below as the connection-side end. This cover cap closes the connection side shown in more detail in FIGS. 2 and 5.
  • the large number of degrees of freedom in which the switch housing 1 is movable and therefore adjustable makes it possible to adapt the position switch to any application. This is also accommodated by the possibility of easy mounting of the electrical connections, which will be explained in more detail below and which also enables use in places which are very difficult to access.
  • the advantages of versatile use and easy assembly are achieved by the outer design of the switch housing 1, which in turn in is made possible essentially by the internal design of the switch.
  • a contact bar 9 which carries resiliently mounted contacts 10 which are in operative connection with contact bridges 11. These contact bridges are perpendicular to a guide plate 12 and are attached to it.
  • the guide plate 12 lies transversely to the longitudinal axis of the switch housing 1.
  • the contact bar 9 is arranged on it in a longitudinally displaceable manner. With the aid of a spring 13, it is always pressed into a defined position, to the left in the drawing.
  • the contact bar has a driver lug 14 with a driver pin 15 which protrude through a recess 16 in the guide plate 12 towards the end on the actuating side.
  • connection part 17 At the connection end, the switch housing 1 is provided with a connection part 17.
  • This connecting part 17 has a core 18 to which connecting plates 19 are fastened lying along the central axis of the switch housing 1.
  • connection plates 19 are provided with a threaded piece 20 into which connection screws 21 can be screwed.
  • this end plate 22 is provided with openings 23 for the passage of a cable, not shown.
  • connection plates 19 are connected to the contact bridges 11 via a wire connection 24 soldered on both sides.
  • connection-side end of the switch housing 1 is provided with a cover cap 6 in the region of the connection part 17.
  • This cover cap 6 is attached to the switch housing 1 and locked with it, for example, via a bayonet lock, which is not shown in detail.
  • a seal 25 is provided between the cover cap 6 and the switch housing 1.
  • the tight screwing of a cable, not shown, to the outside serves a threaded connector 27 in the cover cap 6.
  • This threaded connector 27 is provided on the inside with a so-called armored pipe thread, so that a sleeve can be screwed in there, which in the manner of a crimp sleeve is a cable mechanically secures on the one hand and also seals the interior of the switch housing 1. With the sealing measures, it is possible to use this position switch according to the invention also in damp rooms or in rooms with an aggressive atmosphere.
  • a switching wheel 26 is rotatably mounted about an axis 28 lying transversely to the longitudinal axis of the switch housing 1.
  • This switching wheel 26 has a driver 29 on which corresponds to the driver nose 14 and in particular to the driver pin 15.
  • the ratchet wheel 26 is provided with teeth 30 on its circumferential line. Teeth 31 of an actuating part 32 engage in these teeth 30.
  • a pawl 32 is slidably disposed on the ratchet 26, a pawl 32 is slidably disposed. This pawl 32 is pressed by a spring 33 into a position in which it projects into the region of the teeth 30. The engagement of the teeth 31 of the actuating part 32 removes the pawl 32 from the area of the teeth 30 pushed out.
  • the pawl 32 is provided with a locking lug 34, the path of movement of which, when the ratchet wheel 26 rotates, meets a locking rib 35 connected to the switch housing 1 when the locking pawl 32 projects into the region of the teeth 30.
  • This design actuates the pawl, i.e. unlocked when the appropriate actuator 32 is properly inserted into the position switch.
  • the ratchet 26 can be moved by a small amount; however, since the pawl 32 cannot be unlocked, the locking lug 34 will strike the locking rib 35, thereby preventing the ratchet wheel 26 from turning further and thus preventing a switching function from being triggered.
  • the position switch can be designed to be largely tamper-proof. If another object is inserted into one of the two openings for the purpose of rotating the ratchet wheel, this will block the tripping of the ratchet wheel.
  • the position switch shown in Fig. 11 has the same functions as that described above. However, only a cuboid base 36 is provided here. This base body 36 is provided with a bore 37. This bore 37 is opened in the longitudinal direction with a slot 38, so that the base body 36 assumes the function of a clamp.
  • the cylindrical region 2 of the switch housing 1 is inserted into the bore 37.
  • Two screws 39 and 40 are provided with which the base body 36 can be fastened.
  • the screw 40 bridges the slot 38 so that the switch housing 1 can be clamped by tightening the screw 40.
  • the switch housing 1 can be moved for adjustment in the axial direction and rotated about its central axis.
  • openings 41 can be provided, as indicated in FIG. 2.
  • plungers 42 indicated in FIG. 2 can be inserted into these openings, which cancel the clamp connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP19940112684 1993-09-21 1994-08-13 Contacteur de position Expired - Lifetime EP0645789B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4331981 1993-09-21
DE4331981 1993-09-21

Publications (2)

Publication Number Publication Date
EP0645789A1 true EP0645789A1 (fr) 1995-03-29
EP0645789B1 EP0645789B1 (fr) 1997-10-08

Family

ID=6498158

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940112684 Expired - Lifetime EP0645789B1 (fr) 1993-09-21 1994-08-13 Contacteur de position

Country Status (3)

Country Link
EP (1) EP0645789B1 (fr)
DE (1) DE4428756C2 (fr)
ES (1) ES2110159T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113488346A (zh) * 2021-06-29 2021-10-08 歌尔科技有限公司 开关组件、眼镜腿以及眼镜

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4436579C2 (de) * 1994-10-13 1997-05-22 Bernstein Hans Spezialfabrik Sicherheitsschalter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8332474U1 (de) * 1983-11-11 1984-02-23 Rafi Gmbh & Co Elektrotechnische Spezialfabrik, 7981 Berg Schutzkappe zum Abdecken von Anschlußklemmen
DE4031348A1 (de) * 1990-10-04 1991-04-11 Kronenberg Gmbh H & J Sicherheitsschalter
EP0428426A1 (fr) * 1989-11-03 1991-05-22 Schneider Electric Sa Bride de montage réglable pour détecteur de proximité
DE9212428U1 (fr) * 1992-09-16 1992-11-19 Hans Bernstein Spezialfabrik Fuer Schaltkontakte Gmbh & Co, 4952 Porta Westfalica, De

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1882059U (de) * 1963-09-07 1963-11-07 Euchner & Co K G Einbau-grenztaster.
DE1996567U (de) * 1968-08-23 1968-11-14 Elektro Steuerung Bunz & Co Elektrisches schaltelement
DE3203520A1 (de) * 1982-02-03 1983-08-04 Siemens AG, 1000 Berlin und 8000 München Richtungsempfindlicher sensor
DE3819753A1 (de) * 1988-06-10 1989-12-14 Kronenberg Gmbh H & J Sicherheitsschalter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8332474U1 (de) * 1983-11-11 1984-02-23 Rafi Gmbh & Co Elektrotechnische Spezialfabrik, 7981 Berg Schutzkappe zum Abdecken von Anschlußklemmen
EP0428426A1 (fr) * 1989-11-03 1991-05-22 Schneider Electric Sa Bride de montage réglable pour détecteur de proximité
DE4031348A1 (de) * 1990-10-04 1991-04-11 Kronenberg Gmbh H & J Sicherheitsschalter
DE9212428U1 (fr) * 1992-09-16 1992-11-19 Hans Bernstein Spezialfabrik Fuer Schaltkontakte Gmbh & Co, 4952 Porta Westfalica, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113488346A (zh) * 2021-06-29 2021-10-08 歌尔科技有限公司 开关组件、眼镜腿以及眼镜
CN113488346B (zh) * 2021-06-29 2024-03-08 歌尔科技有限公司 开关组件、眼镜腿以及眼镜

Also Published As

Publication number Publication date
EP0645789B1 (fr) 1997-10-08
ES2110159T3 (es) 1998-02-01
DE4428756C2 (de) 1997-09-11
DE4428756A1 (de) 1995-03-30

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