EP0349706B1 - Levier-poignée pour fermer ou ouvrir un bloc de culasse coulissant - Google Patents

Levier-poignée pour fermer ou ouvrir un bloc de culasse coulissant Download PDF

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Publication number
EP0349706B1
EP0349706B1 EP19890104694 EP89104694A EP0349706B1 EP 0349706 B1 EP0349706 B1 EP 0349706B1 EP 19890104694 EP19890104694 EP 19890104694 EP 89104694 A EP89104694 A EP 89104694A EP 0349706 B1 EP0349706 B1 EP 0349706B1
Authority
EP
European Patent Office
Prior art keywords
housing
opening lever
manual opening
accordance
lever
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 - Lifetime
Application number
EP19890104694
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German (de)
English (en)
Other versions
EP0349706A3 (en
EP0349706A2 (fr
Inventor
Heinz Günter Breuer
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.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall 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 Rheinmetall GmbH filed Critical Rheinmetall GmbH
Publication of EP0349706A2 publication Critical patent/EP0349706A2/fr
Publication of EP0349706A3 publication Critical patent/EP0349706A3/de
Application granted granted Critical
Publication of EP0349706B1 publication Critical patent/EP0349706B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/02—Block action, i.e. the main breech opening movement being transverse to the barrel axis
    • F41A3/10—Block action, i.e. the main breech opening movement being transverse to the barrel axis with sliding breech-block, e.g. vertically

Definitions

  • the invention relates to a hand opener lever for opening and closing a locking wedge according to the features of the preamble of patent claim 1.
  • Such a hand release lever is known from DE-A-32 12 522.
  • This hand opener lever enables an opening movement without overcoming spring force to be easily carried out in a small angle of rotation of an opener shaft required for the opening and closing movement of a locking wedge belonging to a barrel weapon and, after returning the hand opening lever to its rest position, the locking wedge automatically assumes the locked position can perform. Furthermore, this hand release lever ensures an automatic sequence of the locking wedge movements in its rest position.
  • a helical compression spring is used to store the energy required during the closing process.
  • Such helical compression springs have a steep spring characteristic, so that the force to be applied for the closing movement of the locking wedge over the entire closing stroke is not available at the same level.
  • this steep spring characteristic is determined by the limited space available, for example by the narrow space in a battle tank turret, so that a perfect closing function may only be possible with light breeches, for example for barrel weapons up to a caliber of approx. 105 mm is guaranteed.
  • a further disadvantage of this known manual opener lever is that the effort required to replace a single compression spring or to replace the entire assembly of the manual opener lever is comparatively large and time-consuming.
  • a toothed rack is arranged in each case within a hand opener lever housing so as to be pivotable about a toothed wheel.
  • the energy-storing element is also formed here in a space-consuming manner by a helical compression spring.
  • This hand release lever therefore also have the disadvantages of a steep spring characteristic described above.
  • the invention is characterized in an advantageous manner in that, instead of an energy store in the form of a coiled compression spring with a steep spring characteristic, a space-saving gas pressure spring with a comparatively flat spring characteristic is integrated in a hand release lever.
  • the flat spring characteristic of this gas pressure spring ensures the transmission of an approximately constant force in order to achieve a uniform closing stroke of the locking wedge.
  • the spring force required for different closure weights can be generated in a particularly simple manner by changing the pressure level of the gas spring. This makes it possible to keep the outer geometric dimensions of the hand opener lever substantially constant and to use this hand opener lever even in confined spaces, such as a tank tower, for automatic and manual closing of the locking wedge, in particular large-caliber barrel weapons.
  • the transmission of the rotary movement of the opening shaft from a transmission means connected to it via a toothed rack on the gas pressure spring enables an arrangement of these components one above the other and one behind the other in a compact housing, so that a quick and easy exchange, for example a damaged gas pressure spring, is possible without dismantling further components is.
  • the formation of the transmission means in a substantially the compression path of the gas spring corresponding angle range ⁇ as a gear enables not only a safe transmission of the rotary movement in a reciprocating movement of the rack, but also a space-saving arrangement of an approach to form respective positive connections for a manually operable opening and Closing stroke.
  • a tab connected to the hand release lever enables an automatic take-up position of the hand release lever on the base piece Snap into a fastener located on the bottom piece.
  • the hand opener lever is advantageously connected to the opener shaft in a further advantageous manner at the outer end of the opener shaft via internally toothed bearing bushes of the transmission means, as a result of which the hand opener lever can be completely detached from the opener shaft in a simple manner by releasing a further fuse.
  • FIGS. 1 and 2 illustrate the rear end of a barrel weapon 3 with a base piece 5 and a locking wedge 2 which can be displaced essentially transversely to the barrel core axis 35 by means of two opening levers 36.
  • the arrangement and mode of operation of this opening lever 36 which is shown enlarged in FIG is known and is known from DE-OS 32 125 22.4, so that a related graphical representation of the opening shaft 4 is unnecessary.
  • a hand opener lever 1 is positively connected to an outer end of the opener shaft 4 via a spline toothing 37 (FIG. 3).
  • Figures 1, 2 and 4 illustrate the outer contours of the hand opener lever 1 and show a forged or cast housing 8, preferably made of steel, for receiving the inner components shown in detail in Figures 3 and 5.
  • a guide 24 is connected to the housing 8 for a locking bolt 14 which can be actuated by thumb pressure in order to carry out a manual closing operation of the locking wedge.
  • a locking tab 31 is arranged on the outside of the guide 24 for automatically engaging a fastening means 21 arranged on the base piece 5.
  • the housing 8 is pivotally connected to the opening shaft 4 via a transmission means 7.
  • the transmission means 7 is formed on the outside 15 in an angular range ⁇ as a toothed wheel 16, in the toothing of which a toothed rack 12 engages back and forth in the housing 8.
  • a gas pressure spring 6 formed from a piston 9 and a cylinder 10 as the energy-storing element 6 arranged.
  • the piston 9 of the gas pressure spring is supported at its outer end in a centering 22 of the toothed rack 12, its other end during a longitudinal displacement of the toothed rack 12 by the compression stroke s of the gas spring 6 into the cylinder 10 located concentrically behind it, for compressing the gas present in the cylinder , preferably nitrogen, can be immersed.
  • gas pressure springs 6 are commercially available, so that a further description and representation of this gas pressure spring is unnecessary.
  • the circumference of the teeth arranged in the angular range ⁇ of the gear 16 is slightly larger than the displacement of the rack 12 and the compression stroke s of the gas spring 6.
  • the pivoting range ⁇ of the gear 16 is preferably in an angular range between 120 ° -180 °.
  • the transmission means 7 contains for manual actuation driving means 13, 20, which form a positive connection with the hand opener lever housing 8 for the opening process of the locking wedge 2 and a positive connection with the manually displaceable locking bolt 14 mounted in the hand opener lever housing 8 for the closing process.
  • entrainment means 13, 20 are formed from a projection 19 which is arranged on the transmission means 7 outside the angular range ⁇ of the gear 16 and points in the radial direction 18 and which consists of a radial surface 20 for entrainment through the housing 8 and a recess 13 as a means for engaging the locking bolt 14 exist.
  • the locking pin 14 has a protruding into the outer region of the housing 8 and preferably welded to the housing 8 Leadership 24 on.
  • This guide takes on its outer end face 17 a screw 25 as an outer limit 26 for the locking pin 14.
  • a housing bore 27 is provided for mounting the locking bolt 14, which has an extension 29 for receiving a return spring 28.
  • the locking pin 14 For its return to the unlocked position relative to the recess 13 of the transmission means 7, the locking pin 14 contains a further extension 30, on which the return spring 28 is supported.
  • the free end 38 of the locking bolt 14, which passes through the screw insert 25, projects beyond the screw insert 25 for manual actuation, so that the locking bolt 14, which is designed as a handle, can be actuated from the outside by thumb pressure at the end.
  • a locking tab 31 for automatically engaging a locking means 21 arranged on the base piece 5 is fastened.
  • This locking tab 31 contains a lower bore 39 shown in FIG. 4 and a slot 40 opening into this bore 39 from above and narrower in width compared to the bore diameter.
  • This slot 40 is provided with a blind bore 41 on the side facing the housing 8 .
  • the fastening means 21 FIG. 2 arranged on the base piece 5 snaps into the bore 41.
  • the fastening means 21 consists of a bolt 42 adjustable against a spring force, which is first pressed through the bore 39 with its head, not shown, and then slides along the slot 31 with its web, also not shown, until the head enters the bore 41 of the tab 31 snaps into place. Release the hand release lever 1 its rest position on the base piece 5 takes place in the reverse order of these actuation steps, the head of the bolt 42 first having to be pressed out of the bore 41.
  • Figure 5 illustrates that the transmission means 7 is formed on both sides of the gear 16 in its axial direction as a bearing bush, the one bearing bush 32 in the housing 8 or a housing extension 43 and the other bearing bush 33 in a housing 8 by screws 44 detachable attached lid 34 is mounted.
  • the segmented gear 16 and the shoulder 19 of the transmission means 7 protrude in the radial direction beyond the outer diameter of the bushings 32, 33 and can move during a pivoting movement in the circumferential direction 46 in a between the inner wall of the cover 34 and a recess 45 of the housing 8 .
  • the transmission means 7 consisting of the bushings 32, 33, the gear 16 and the shoulder 19 is of equal length with the width of the housing 8.
  • Both parts 7, 8 can therefore be easily combined together due to the transmission means 7 and the stump 47 of the Push the multi-spline toothing 37 provided from the outside onto the stump 47 and secure it in the axial direction by a further screw 48 (not shown in more detail).
  • This screw is secured against loosening by an eccentric position (not shown) of a spring lock 49 located within the stump 47 of the opening shaft 4.
  • the opener shaft 2 is mounted in a manner known per se within the base piece 5 in an axial bearing 50 and in a radial bearing 51, the axial bearing 50 and the shoulder 43 of the housing 8 of the manual opener lever 1 being arranged within a bore 55 of the base piece 5.
  • the bolt 42 fastened to the base piece 5 must be pressed in the manner described and the connection with the locking tab 31 arranged on the hand opener lever must be released.
  • the hand opener lever 1 is pivoted in the direction 53, the radial surface 20 of the extension 19 is carried along by an opposite surface 52 of the housing 8.
  • the opening shaft 4 is rotated by the transmission means 7 until the locking wedge 2 is opened by the opening levers 36.
  • the gear 16 and the housing 8 do not move against each other, so that the gas spring 6 is not tensioned.
  • the approach 19 of the transmission means 7 has been moved from position A to position B, in which it remains in the open position of the locking wedge 2.
  • the locking wedge 2 is held in its open position by a locking bolt, not shown.
  • the hand opener lever 1 is pivoted back in the direction 54 to take its already described rest position on the base piece 5, the toothed rack 12 performs the compression stroke s of the gas spring 6 due to the meshing effect with respect to the gear wheel 16.
  • the firing stroke of the locking wedge 2 is effected by the force of the gas spring 6, the force of which remains approximately constant due to the flat characteristic curve.
  • the transmission means 7 is pivoted back from B to A by the gas spring 6.
  • the automatic opening of the locking wedge 9 takes place in a known manner during the pipe advance. While the hand opener lever 1 remains locked in its rest position on the base piece 5, the opening shaft 4 is rotated via a starting lever, not shown, and the locking wedge 2 is transmitted by the transmission of the rotary movement to the opening lever 36 engaging in the locking wedge 2 open.
  • the gas spring 6 is pretensioned by the rotation of the opening shaft 4 and the movement of the transmission means 7 from the starting position A to the end position B during the longitudinal movement of the rack 12 and the piston 9.
  • the closing process can still be carried out completely by an additional manual operation.
  • the hand opener lever 1 pivots from its rest position secured on the base piece 5 into the position of the transmission means 7 located between A and B.
  • the transmission means 7 By pressing the thumb on the end 38 of the locking bolt 14, the other end of the locking bolt 14 now engages in the recess 13 of the extension 19 and thus establishes a connection with the transmission means 7, so that the wedge 2 can be closed via the opening shaft 4 and the opening lever 36.
  • the transmission means 7, the toothed rack 12 and the gas spring 6 form an immovable unit relative to the housing 8, so that no additional forces occur due to the gas spring 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Fluid-Damping Devices (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Lock And Its Accessories (AREA)

Claims (10)

  1. Levier d'ouverture (1) pour ouvrir et fermer un coin de culasse (2) d'une arme à tube (3), pouvant pivoter autour d'un axe d'ouverture (4), comportant un élément (6) accumulateur d'énergie placé à l'intérieur d'un boîtier (8) dudit levier d'ouverture dans un compartiment de réception (11), pour le mouvement de fermeture du coin de culasse, qui, dans la position de repos du levier d'ouverture (1), est précontraint par l'axe d'ouverture (4) placé dans la pièce de fond (5) de l'arme (3) lors de l'ouverture automatique du coin de culasse (2) par un organe de transmission (7) relié par concordance de forme à l'axe d'ouverture (4) et, lors de la fermeture du coin de culasse (2) provoque son mouvement de fermeture, mais reste hors fonction en cas de mouvement d'ouverture et de fermeture manuel du coin de culasse (2) par le levier d'ouverture (1), un piston (9) destiné à accumuler et à libérer l'énergie étant placé à l'intérieur du compartiment de réception (11) et l'organe de transmission (7) relié au piston (9) étant placé à l'intérieur du boîtier (8) du levier, caractérisé par les caractéristiques suivantes :
    a) l'élément accumulant l'énergie (6) est un ressort pneumatique,
    b) le piston (9) du ressort pneumatique est relié à l'organe de transmission (7) par l'intermédiaire d'un crémaillère (12),
    c) l'organe de transmission se présente extérieurement, dans un intervalle angulaire α, sous la forme d'un pignon (16) et engrène dans cet intervalle avec la crémaillère (12),
    d) l'organe de transmission (7) comprend, en dehors de l'intervalle angulaire α conformé en pignon, pour un actionnement manuel, en tant qu'organe d'entraînement, un appendice (19) dirigé en direction radiale qui constitue pour le processus d'ouverture du coin de culasse (2) et pour l'entraînement par le boîtier (8) du levier, une liaison par concordance de forme avec ledit boîtier (8) et réalise, pour le processus de fermeture du coin de culasse, une liaison par concordance de forme avec une cheville de blocage (14) placée dans le boîtier (8) et déplaçable manuellement.
  2. Levier d'ouverture selon la revendication 1, caractérisé en ce que la périphérie du pignon (16) est, à l'intérieur de l'intervalle angulaire α, légèrement plus étendue que le trajet de compression s du piston (9) du ressort pneumatique (9, 10).
  3. Levier d'ouverture selon la revendication 1, caractérisé en ce que l'appendice (19) se trouvant sur l'organe de transmission (7) comprend une surface radiale (20) pour l'entraînement par le boîtier (8) et un creux (13) comme moyen d'engrènement de la cheville de blocage (14).
  4. Levier d'ouverture selon l'une des revendications 1 à 3, caractérisé en ce que le piston (9) du ressort pneumatique (9, 10) s'appuie dans un centrage (22) de la crémaillère (12).
  5. Levier d'ouverture selon l'une des revendications 1 à 4, caractérisé en ce que la crémaillère (12) et l'unité du ressort pneumatique (6) formée par un piston (9) et un cylindre (10) sont placées l'une après l'autre dans le boîtier (8) du levier d'ouverture (1).
  6. Levier d'ouverture selon l'une des revendications 1 à 5, caractérisé en ce que le compartiment de réception (11) du ressort pneumatique (6) est fermé par une insertion filetée (23) placée extérieurement dans le boîtier (8).
  7. Levier d'ouverture selon l'une des revendications 1 à 6, caractérisé en ce que la cheville de blocage (14) comporte un guide (24) faisant irruption dans la zone extérieure du boîtier (8), sur lequel est placé une garniture filetée (25) constituant une limitation extérieure (26) de la cheville de blocage (14).
  8. Levier d'ouverture selon l'une des revendications 1 à 7, caractérisé en ce que l'alésage (27) du boîtier destiné au placement de la cheville de blocage (14) comporte un élargissement (29) pour recevoir un ressort de rappel (28) et la cheville de blocage (14) comporte un appendice (30) pour être ramenée dans la position débloquée vis-à-vis du creux (13) de l'organe de transmission (7).
  9. Levier d'ouverture sel on l'une des revendications 1 à 8, caractérisé en ce que le guide (24) comprend extérieurement une languette de verrouillage (31) pour l'accrochage automatique d'un organe de fixation (21) placé sur la pièce de fond (5).
  10. Levier d'ouverture selon l'une des revendications 1 à 9, caractérisé en ce que l'organe de transmission (7) présente dans sa direction axiale de chacun des deux côtés du pignon (16) la forme d'un coussinet, l'un des coussinets (32) étant placé dans le boîtier (8) et l'autre coussinet (33) dans un couvercle (34) fixé de façon amovible du boîtier (8).
EP19890104694 1988-07-04 1989-03-16 Levier-poignée pour fermer ou ouvrir un bloc de culasse coulissant Expired - Lifetime EP0349706B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3822556A DE3822556A1 (de) 1988-07-04 1988-07-04 Handoeffnerhebel zum oeffnen und schliessen eines verschlusskeiles
DE3822556 1988-07-04

Publications (3)

Publication Number Publication Date
EP0349706A2 EP0349706A2 (fr) 1990-01-10
EP0349706A3 EP0349706A3 (en) 1990-07-11
EP0349706B1 true EP0349706B1 (fr) 1992-12-23

Family

ID=6357901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890104694 Expired - Lifetime EP0349706B1 (fr) 1988-07-04 1989-03-16 Levier-poignée pour fermer ou ouvrir un bloc de culasse coulissant

Country Status (5)

Country Link
US (1) US4924748A (fr)
EP (1) EP0349706B1 (fr)
JP (1) JPH0252997A (fr)
DE (2) DE3822556A1 (fr)
TR (1) TR23875A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3914538A1 (de) * 1989-05-02 1990-11-08 Rheinmetall Gmbh Bodenstueck eines waffenrohres mit einem fremdantrieb und einer sicherungsvorrichtung zum oeffnen eines verschlusskeiles
FR2721385B1 (fr) 1994-06-17 1996-08-14 Giat Ind Sa Dispositif d'ouverture manuelle de coin de culasse et artillerie équipée d'un tel dispositif.
US7296506B2 (en) * 2005-03-10 2007-11-20 Bae Systems Land & Armaments L.P. Make-break devices

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA552176A (fr) * 1958-01-28 B. Brathe Karl Amortisseurs de blocs de culasses
US798882A (en) * 1904-03-11 1905-09-05 John W Dearborn Rapid-fire ordnance.
FR433114A (fr) * 1910-08-25 1911-12-26 Vickers Ltd Perfectionnements au mécanisme de manoeuvre du bloc de culasse pour canons
GB263214A (en) * 1925-09-15 1926-12-15 Arthur Trevor Dawson Improvements in or relating to ordnance breech mechanism
GB261872A (en) * 1925-09-16 1926-12-02 Arthur Trevor Dawson Improvements in or relating to ordnance breech mechanism
DE495227C (de) * 1928-08-11 1930-04-05 Fried Krupp Akt Ges Vorrichtung zum elektrischen Abfeuern von Geschuetzen
FR731422A (fr) * 1931-03-07 1932-09-02 Anciens Ets Skoda Dispositif d'équilibrage pneumatique pour bouches à feu, en particulier
US2434970A (en) * 1944-06-01 1948-01-27 Summerbell William Breech operating mechanism
US2434972A (en) * 1946-01-31 1948-01-27 Fred A Vick Recoil operated device for opening and closing a breechblock mechanism
US2522497A (en) * 1948-04-28 1950-09-19 Orie L Beardsley Breech operating mechanism
US3656400A (en) * 1970-03-18 1972-04-18 Oberlikon Buehrle Holding Ag Automatic gun breech mechanism having latches to hold the breech block open
DE3212522A1 (de) * 1982-04-03 1983-10-13 Rheinmetall GmbH, 4000 Düsseldorf Rohrwaffe

Also Published As

Publication number Publication date
JPH0252997A (ja) 1990-02-22
DE58903088D1 (de) 1993-02-04
US4924748A (en) 1990-05-15
EP0349706A3 (en) 1990-07-11
EP0349706A2 (fr) 1990-01-10
DE3822556A1 (de) 1990-01-18
TR23875A (tr) 1990-10-16
JPH0585838B2 (fr) 1993-12-08

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