EP0062208B1 - Schaltuhrwerk - Google Patents

Schaltuhrwerk Download PDF

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Publication number
EP0062208B1
EP0062208B1 EP82102332A EP82102332A EP0062208B1 EP 0062208 B1 EP0062208 B1 EP 0062208B1 EP 82102332 A EP82102332 A EP 82102332A EP 82102332 A EP82102332 A EP 82102332A EP 0062208 B1 EP0062208 B1 EP 0062208B1
Authority
EP
European Patent Office
Prior art keywords
safety
toothed disc
guide grooves
cam
disc
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
EP82102332A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0062208A1 (de
Inventor
Karl-Heinz Schmierer
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.)
AFFAERSVERKET FFV
Original Assignee
Affarsverket FFV
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 Affarsverket FFV filed Critical Affarsverket FFV
Priority to AT82102332T priority Critical patent/ATE15539T1/de
Publication of EP0062208A1 publication Critical patent/EP0062208A1/de
Application granted granted Critical
Publication of EP0062208B1 publication Critical patent/EP0062208B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F3/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork
    • G04F3/02—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms
    • G04F3/025—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeters with clockwork with mechanical driving mechanisms mechanically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/44—Arrangements for disarming, or for rendering harmless, fuzes after arming, e.g. after launch
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means
    • F42C9/04—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor
    • F42C9/041—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means by spring motor the clockwork activating a security device, e.g. for unlocking the firing-pin

Definitions

  • the invention relates to a timer mechanism for time-delayed triggering of a switching device, in particular for arming explosive devices, in which the switching process is delayed by constant rotation of a prestressed toothed disk cooperating with an inhibitor mechanism by a predetermined angle of rotation at a predetermined angular velocity by a shaft mounted in circuit boards or a circuit board and after passing through this angle of rotation is triggered, with the toothed disk associated with locking elements that block the toothed disk when the inhibitor fails.
  • Such a time switch mechanism is known from DE-A-2 145 989.
  • the securing elements consist of a catch lever and a tensioning lever, which is rotatably mounted together with the toothed disk on a pin. Both the catch lever 14 and the clamping lever 16 are acted upon by a spring.
  • this safety device is that when the toothed disc (rotary slide valve) runs properly (slowly), the tensioning lever moves the catch lever out of the movement path of the toothed disc, whereas if the inhibitor fails, i.e. H. abrupt spinning of the gear wheel strikes the catch lever 14 and is blocked before the clamping lever 16 has pushed the catch lever 14 out of the path of movement of the toothed disk.
  • the main disadvantage of this safety arrangement is that the clamping lever is returned to its starting position immediately after the release of the time switch mechanism, actuates the catch lever and thus unlocks the time switch mechanism.
  • the use of such a time switch mechanism means that a mine with such a time switch mechanism is thrown off, for example, by moving trucks. It must therefore be ensured that under no circumstances - for example as a result of damage to the gears or axle journals immediately after the explosive device or the mine is ejected - the toothed wheel can already turn quickly and can arm the explosive device, since then possibly following vehicles are already at risk.
  • the securing elements include a locking cam which is guided in guide grooves of the circuit boards or a circuit board, engages in a driver recess of the toothed disk and is acted upon by an external force in a substantially radial direction relative to the toothed disk, and that the guide grooves consist of a first part which extends essentially tangentially or in the circumferential direction to the toothed disk over a predetermined angular part of the predetermined angle of rotation of the toothed disk and covers its driver recess, and a second part which extends essentially in the radial direction, a T- Similar or hook-like course of the guide grooves arises, so that when the safety cams function properly as a result of the external force after passing through the first part of the guide grooves, the radial part of the guide grooves is shifted and thereby releases the toothed disk, whereas in S In the event of a fault, the locking cam is clamped between the end of the first part of the guide grooves
  • the mechanical design of the locking elements is based on the "competition" between the pretensioning of the toothed lock washer by means of its driving spring on the one hand and the external force F which acts on the locking cam.
  • the second part of the guide groove passes so quickly that it can no longer be drawn into it, but at the end of the first part of the guide groove between this and the driver recess is clamped and the lock washer is blocked.
  • an embodiment of the principle according to the invention provides that the locking cam is a locking washer with a first pin guided in a guide groove of the lower plate and a second pin engaging in the driver recess of the toothed disk, that the second part of the Guide groove and the external force acting on the locking washer radially inward, and that the toothed washer has a circular groove that at least partially covers the second part of the guide groove, so that the second pin can normally slide from the driver recess into the groove .
  • the locking washer is pressed properly by the external force after passing through the first part of the guide groove from the driver recess inward into the subsequent annular groove of the toothed washer, whereby the toothed washer is released in its further movement.
  • the time switch mechanism includes an upper circuit board 10 and a lower circuit board 11, between which a shaft 12 and a bushing 14 are guided, which on the one hand support the toothed disk 13 and on the other hand are prestressed in the direction of the arrow in FIGS. 2-4 by means of a drive spring 15 .
  • the toothed disk 13 is partially provided on the circumference with teeth which mesh with the teeth of a further gear wheel 24 which in turn is in engagement with further gear wheels forming a reduction gear.
  • the last link of this reduction chain forms a vibrating anchor 25.
  • the toothed disk 13 Depending on the frequency of the vibrating anchor and the translation or reduction of the gear transmission, the toothed disk 13 therefore rotates at a predetermined angular speed, as long as the teeth arranged on the circumference are in engagement with the teeth of the gear 24, ie until the toothed disc 13 has rotated through the angle jJ. After passing through the angle j J, the circumferential toothing of the toothed disk 13 ceases and the drive spring 15 rotates the toothed disk 13 at high angular velocity around the largest part of its remaining circumference.
  • the basic idea of the invention is to provide additional securing elements during an initial period after the clockwork has been started, that is to say for a rotation of the toothed disk 13 by an angle ⁇ , which also causes the sudden turning of the toothed disk 13 and thus the arming in the event of damage to the transmission of the explosive device prevented.
  • the securing elements used to implement this concept consist of a securing pin 16 which is held in two congruent guide grooves 20, 21 milled in the two plates 10 and 11. With regard to the toothed disk 13, this locking pin 16 is positioned such that it engages in a driver recess 17 on the circumference of the toothed disk 13.
  • the two congruent guide grooves 20, 21 are positioned so that they extend tangentially or circumferentially over the edge region of the toothed disk 13 with a first part, and that they extend beyond the peripheral region of the toothed disk 13 with a second part, the second part Part of the guide grooves 20, 21 extends substantially radially with respect to the toothed disk 13 to the outside.
  • the first part and the second part of the guide grooves enclose an angle y of approximately 70 ° with one another.
  • a pin 19 is also attached between the two plates 10 and 11, a spring 18 is tensioned between the pin 19 and the locking pin 16, which consequently exerts a force which extends essentially radially outward with respect to the toothed disk 13. It is advantageous if the direction of the force exerted by the spring 18 forms an angle ⁇ with the connecting line between the center of the toothed disk 13 and the locking pin 16 in such a way that when the toothed disk 13 rotates in the direction of the arrow, a restoring force is generated, which lock pin 16 presses against the flank of the driver recess 17 lying opposite to the direction of rotation.
  • the direction of the force of the spring 18 thus consists of a radial component and a tangential component.
  • the locking pin For proper guidance of the locking pin, it has shoulders 22 and 23, with the aid of which it slides along on the upper side of the lower board 11 or the underside of the upper board 10. For assembly reasons, the part of the securing pin 16 passing through the guide groove 20 is extended upwards, so that it projects beyond the upper board 10.
  • Fig. 2 shows the starting position of the time switch mechanism. This can be seen from the fact that the beginning of the toothed angular range d of the toothed disc 13 is currently in engagement with the gear 24, that is, the clockwork is just starting to start.
  • the locking pin 16 In this initial position, the locking pin 16 is located at the beginning of the first, tangential part of the guide grooves 20 and 21; after the start of the rotation of the toothed disc 13, the locking pin 16 is gripped by the rear edge of the driver recess 17 and moved along the first part of the guide groove 20, 21 until it has passed through the angle ⁇ .
  • the spring constant of the spring 18 must be selected such that when the toothed disc 13 is rotated properly and with a very low angular velocity, the locking pin 16 can be safely pulled into the second part of the guide groove, but may not be chosen so high, that even with rapid spinning of the toothed disc 13 due to a defect, the locking pin 16 can still slide into this second part.
  • the toothed disk 13 is toothed over its entire circumference.
  • a locking washer 26 with pins 29 and 30 are provided here as securing elements.
  • the locking washer 26 lies between the lower board 11 and the toothed disk 13, the upper pin 30 engaging in a driver recess 28 of the toothed disk 13 and the lower pin 29 in a guide groove 27 in the board 11.
  • the course of the guide groove 27 corresponds essentially to the guide grooves 20, 21 in the first exemplary embodiment, with the difference that its second part, which extends in the radial direction, is directed towards the center of the toothed disk 13.
  • the driver recess 28 covers the first, circumferentially extending part of the guide groove 27.
  • the driver recess 28 is connected via a radially extending transition groove 39 to an annular groove 37 which is arranged further in the center of the toothed disc 13 and is dimensioned such that the upper pin 30 the lock washer 26 can slide therein without obstructing the timing of the timer.
  • the locking washer 26 has a semicircular cutout 35, the radius of which is equal to the radius of the socket.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Operated Clutches (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Electric Clocks (AREA)
  • Switches With Compound Operations (AREA)
  • Electrophonic Musical Instruments (AREA)
EP82102332A 1981-03-31 1982-03-20 Schaltuhrwerk Expired EP0062208B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82102332T ATE15539T1 (de) 1981-03-31 1982-03-20 Schaltuhrwerk.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813112669 DE3112669A1 (de) 1981-03-31 1981-03-31 Schaltuhrwerk
DE3112669 1981-03-31

Publications (2)

Publication Number Publication Date
EP0062208A1 EP0062208A1 (de) 1982-10-13
EP0062208B1 true EP0062208B1 (de) 1985-09-11

Family

ID=6128776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82102332A Expired EP0062208B1 (de) 1981-03-31 1982-03-20 Schaltuhrwerk

Country Status (3)

Country Link
EP (1) EP0062208B1 (enrdf_load_stackoverflow)
AT (1) ATE15539T1 (enrdf_load_stackoverflow)
DE (2) DE3112669A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE452365B (sv) * 1986-03-13 1987-11-23 Ffv Affersverket Sekringsanordning for ammunitionstendror
CN115717851B (zh) * 2022-12-08 2025-07-01 江西新明机械有限公司 一种低过载延时保险机构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1193791A (enrdf_load_stackoverflow) * 1959-11-04
CH127564A (de) * 1926-06-04 1928-09-01 Skoda Kp Vorrichtung zur Verhinderung der Auslösung eines mechanischen Zünders vor einer bestimmten Laufdauer seines Uhrwerkes.
US3170404A (en) * 1955-03-17 1965-02-23 Frank H Swaim Acceleration sensitive variable clock
CH395803A (fr) * 1964-02-07 1965-07-15 Mefina Sa Fusée de projectile
DE1298052B (de) * 1965-06-26 1969-06-19 Diehl Fa Zeitschalter, Kurzzeitmesser od. dgl. mit nichtlinearer Zeitskala
CH464015A (fr) * 1967-10-05 1968-10-15 Mefina Sa Fusée pour projectile girant
DE2145989A1 (de) * 1971-09-15 1973-03-29 Prontor Werk Gauthier Gmbh Entsicherungswerk fuer vermittels eines detonators zuendbare sprengkoerper, insbesondere flugkoerper
DE2803713C2 (de) * 1978-01-28 1987-04-16 FFV, Eskilstuna Schaltuhrwerk

Also Published As

Publication number Publication date
DE3112669C2 (enrdf_load_stackoverflow) 1991-07-25
DE3266115D1 (en) 1985-10-17
DE3112669A1 (de) 1982-10-14
EP0062208A1 (de) 1982-10-13
ATE15539T1 (de) 1985-09-15

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