EP2383537A1 - Plaque de montage pour le montage amovible d'un viseur pour arme à feu portative - Google Patents

Plaque de montage pour le montage amovible d'un viseur pour arme à feu portative Download PDF

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Publication number
EP2383537A1
EP2383537A1 EP10161352A EP10161352A EP2383537A1 EP 2383537 A1 EP2383537 A1 EP 2383537A1 EP 10161352 A EP10161352 A EP 10161352A EP 10161352 A EP10161352 A EP 10161352A EP 2383537 A1 EP2383537 A1 EP 2383537A1
Authority
EP
European Patent Office
Prior art keywords
support member
mounting plate
stud
mounting
sight
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.)
Withdrawn
Application number
EP10161352A
Other languages
German (de)
English (en)
Inventor
Kjell Hansson
Glenn Larsson
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.)
Ostergardens Vapenverkstad AB
Original Assignee
Ostergardens Vapenverkstad AB
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 Ostergardens Vapenverkstad AB filed Critical Ostergardens Vapenverkstad AB
Priority to EP10161352A priority Critical patent/EP2383537A1/fr
Publication of EP2383537A1 publication Critical patent/EP2383537A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41G—WEAPON SIGHTS; AIMING
    • F41G11/00—Details of sighting or aiming apparatus; Accessories
    • F41G11/001—Means for mounting tubular or beam shaped sighting or aiming devices on firearms

Definitions

  • the present invention relates to a mounting plate for releasably mounting a sight to a handheld firearm.
  • the present invention also relates to a mounting system comprising such a mounting plate.
  • Handheld firearms such as rifles, pistols and revolvers, are often equipped with sights for improved aiming. Having a sight that can be easily mounted and dismounted is desirable as it allows convenient removal of the sight during transportation and storage of the firearm. It also allows a user to conveniently switch between various sights.
  • a previously known mounting system for releasably mounting a sight on a rifle is disclosed in US 5,035,487 .
  • This mounting system includes a stud mounted directly or indirectly on the sight and a support member mounted to the rifle.
  • the support member has a locking mechanism for releasably locking the stud to the support member to prevent relative movement between the sight and the support member in an axial direction of the stud.
  • the locking mechanism includes a stud receiving bore formed in the support member and a rotational shaft arranged in such a way that when the stud is received in the stud receiving bore, the rotational shaft may be engaged with a groove in the stud in a locked position and may be disengaged in an unlocked position. This allows the sight to be mounted to the rifle in a rapid and repeatable manner.
  • Henneberger® who sells a mounting plate for mounting a stud on a sight from Aimpoint's ® product line Micro, which stud is compatible with the support member and locking mechanism in US 5,035,487 .
  • the mounting plate from Henneberger has a bore formed therein so that a pin can be arranged in the bore in such a way that the pin protrudes from the mounting plate.
  • the buyer of the mounting system modifies the support member by drilling a bore therein, the pin that protrudes from the mounting plate will engage the bore in the support member and prevent relative rotation between the support member and the mounting plate about a longitudinal axis of the stud.
  • an object of the invention is to alleviate the problems discussed above.
  • an object is to provide a mounting plate that prevents the sight from becoming misaligned, while being connectable to a commercially available support member without modification of the support member.
  • a mounting plate for releasably mounting a sight to a handheld firearm, the mounting plate having a first side mountable to the sight, and a second side connectable to a support member, which support member is attached to the handheld firearm by means of a countersunk screw arranged in a screw hole formed in the support member, the second side of the mounting plate being provided with a stud configured to interact with a locking mechanism in the support member so as to releasably lock the stud to the support member in such a way that relative movement between the mounting plate and the support member in an axial direction of the stud is prevented, wherein the mounting plate further comprises a protrusion on the second side of the mounting plate, the protrusion being configured to be received within and engage with a portion of the screw hole located between a surface of the support member and a head of the countersunk screw when the mounting plate is locked to the support member, so as to prevent relative rotation between the mounting plate and the support member about a longitudinal axis of the
  • the present invention is based on the understanding that a portion of the screw hole that is located between a surface of the support member (facing the mounting plate) and a head of a countersunk screw may often be sufficient to receive and engage with a protrusion on the mounting plate to prevent misalignment.
  • This additional functionality of the screw hole allows already commercially available support members, such as the QR-system from Leupold®, to be utilized with the inventive mounting plate without modification thereof.
  • the support member may preferably be further attached to the handheld firearm by means of a second countersunk screw arranged in a second screw hole formed in the support member, wherein the mounting plate further may comprise a second protrusion on the second side of the mounting plate, the second protrusion being configured to be received within and engage with a portion of the second screw hole located between the surface of the support member and a head of the second countersunk screw when the mounting plate is locked to the support member, so as to prevent relative rotation between the mounting plate and the support member about the longitudinal axis of the stud.
  • An advantage with two protrusions is that the robustness of the connection can be further improved.
  • At least one of the one or more protrusions may preferably have a height that is in the range 0.3 - 2.5 mm, more preferably in the range 0.8 - 1.2 mm, and most preferably is 1.0 mm.
  • the height is here defined as the extension in the axial direction of the stud, or put differently a distance from a surface from which the protrusion protrudes (i.e. a surface of the second side of the mounting plate), to the tip of the protrusion.
  • Protrusions with a height that falls within these ranges have been found to be sufficiently high to efficiently engage with the screw hole, while being able to fit in a typical cavity formed between the head of the countersunk screw and the surface of the support member.
  • a protrusion with a height of 1.0 mm just fits inside the cavity formed between the head of the countersunk screw and the surface of the support member when the QR-system from Leupold® is used.
  • At least one of the one or more protrusions may be essentially circular cylindrical.
  • a circular cylindrical protrusion is easy to manufacture, and works well with screw holes where the cavity between the surface of the support member and a head of the countersunk screw is circular cylindrical, as is the case in e.g. the QR-system from Leupold®.
  • At least one of the one or more protrusions may have a diameter of 5.4 mm, more preferably the diameter may be in the range 5.38 - 5.45 mm, and most preferably be 5.40 mm with a tolerance of +0.03 mm.
  • a diameter in this range fits tightly in the cavity formed between the surface of the support member and a head of the countersunk in the QR-system from Leupold® and ensures that an accurate alignment of the sight.
  • a distance between a centre of the stud and a centre of at least one of the one or more protrusions may preferably be 11 mm. This distance corresponds to the distance between the centre of the stud receiving bore and the centre of the screw hole in the QR-system from Leupold®.
  • the stud and the first and second protrusions may be located along an imaginary straight line with the stud in the middle and the first and second protrusions on either side thereof. This arrangement is compatible with the QR-system from Leupold®.
  • the mounting plate according to the present invention may advantageously be included in a mounting system, further comprising a support member having a screw hole formed therein, the screw hole being configured to receive a countersunk screw for attaching the support member to the handheld firearm, the support member further comprising a locking mechanism configured to interact with the stud so as to releasably lock the mounting plate to the support member in such a way that relative movement between the mounting plate and the support member in an axial direction of the stud is prevented.
  • the stud may have a groove formed therein
  • the locking mechanism may comprise a stud receiving bore formed in the support member for receiving the stud, and a rotational shaft arranged in the support member, wherein said rotational shaft has a groove formed therein and is configured in such a way that said rotational shaft is engageable with said groove in the stud in a locked position and disengageable with the groove in the stud in an unlocked position.
  • a mounting system 1 for releasably mounting a sight 2 to a handheld firearm 3 will now be described with reference to Figs. 1 to 4 .
  • the sight is here assumed to be an Aimpoint® MICRO H-1
  • the mounting system may also be utilized for other sights.
  • the firearm is here assumed to be a rifle
  • the mounting system is equally applicable for other types of handheld firearms 3 such as e.g. pistols and revolvers.
  • the mounting system 1 comprises a mounting plate 4 and a support member 5.
  • the mounting plate 4 here has a first side 4a attached to the sight 2 by means of four screws 6, and a second side 4b (opposite the first side 4a) releasably connectable to the support member 5.
  • the first side 4a of the mounting plate 4 will here be referred to as the upper side as this side faces upwards when the sight 2 is mounted to the rifle 3 and the rifle is properly oriented for use.
  • the second side 4b of the mounting plate 4 will be referred to as the lower side 4b.
  • the mounting plate 4 has a stud 7 that protrudes from a surface on the lower side 4b of the mounting plate, which stud has a groove 8 formed therein (as best illustrated in Fig. 2 ).
  • the diameter of the stud is here 7.9 mm with a tolerance of +0.05 mm.
  • the support member is provided with a locking mechanism comprising a stud receiving bore 9 formed in the support member 5, and a rotational shaft 12 arranged in a rotational shaft receiving bore formed in the support member 5.
  • the rotational shaft 12 has a groove formed therein.
  • the locking mechanism is configured such that the rotational shaft 12 is engageable with the groove 8 in the stud 7 in a locked position (as illustrated in Fig. 4 ) and disengageable with the groove 8 in the stud 7 in an unlocked position.
  • the locking mechanism can fasten the mounting plate 4 and the support member 5 to each other so as to prevent movement between the mounting plate 4 and the support member 5 in an axial direction of the stud 7 when the rotational shaft 12 is in the locked position, while allowing the mounting plate 4 to be disconnected from the support member 5 when the shaft is in the unlocked position.
  • the stud 7 and the rotational shaft 12 are preferably made of a material, such as steel, that can stand wear that occurs as the rotational shaft engages the groove in the stud.
  • the mounting plate and the support member may also be made of steel or other suitable metal.
  • the support member 5 preferably has two screw holes 10,11 formed therein.
  • the distance between the centres of the screw holes are here 21,82 mm in accordance with the industry standard.
  • the screw holes are configured such that the screws 13,14 are countersunk. This can be achieved by using screw holes 10,11 with a first (upper) portion with a diameter adapted to receive the head of the screw, and a second (lower) portion with a diameter adapted to receive the body of the screw, but sufficiently small to prevent the screw head to enter.
  • Both upper and lower portions of each screw hole are here circular cylindrical.
  • the upper portion of the screw hole may also have other shapes.
  • the upper portion of the screw hole may have the shape of a rectangular, hexagonal, or octagonal cylinder.
  • the depth i.e.
  • the extension in the axial direction of the screw hole) of the upper portion of the screw hole exceeds the height of the head of the screw so that a cavity is formed between the upper surface 5a of the support member 5 and the head 14a of the screw when the support member 5 is attached to the rifle 3.
  • the distance between the head of the screw and the surface of the support member may vary, but for the QR-system from Leupold®, this distance is typically about 1.1 mm.
  • the stud receiving bore 9, and the first 10 and second 11 screw holes are here arranged along an imaginary straight line (extending in the direction of the rifle) with the stud receiving bore 9 in the middle and the first 10 and second 11 screw holes on either side thereof.
  • the lower side 4b of the mounting plate 4 preferably comprises first 15 and second 16 protrusions.
  • the protrusions 15,16 are arranged such that their positions corresponds to the respective positions of the first and second screw holes 10,11 in the support member 5.
  • the protrusions 15,16 are here located along an imaginary straight line (extending in the direction of the rifle) with the stud 7 in the middle and the first 15 and second 16 protrusions on either side thereof.
  • the distance between the centres of the protrusions are here 21,82 mm to be compatible with the screw holes 10,11.
  • each protrusion 15,16 preferably corresponds to the shape and size of the portion of the corresponding screw hole 10,11 that is located between the surface 5a of the support member 5 and the head 13a,14a of the screw 13,14, so that each protrusion can be received within and engage with the upper portion of its corresponding screw hole.
  • each protrusion 15,16 is circular cylindrical with a diameter of 5.40 mm (and a tolerance of +0.03 mm) to fit tightly in the respective screw hole provided in the QR-, Quick Release®, system from Leupold®.
  • the height of each protrusion 15,16 i.e.
  • the extension in the axial direction of the protrusion is preferably selected such that the complete protrusion 15,16 just fits above the screw head 13a,14a in its corresponding screw hole 10,11, when the lower surface 4b of the mounting plate 4 rests against the upper surface 5a of the support member 5.
  • the height of the protrusion is 1.0 mm.
  • Fig. 3 schematically illustrates how a sight 2 attached to the above described mounting plate 4 can be mounted to the above described support member 5 attached to a rifle 3.
  • the rotational shaft 12 of the locking mechanism is in unlocked position, i.e. the groove in the rotational shaft is located such that the stud 7may be inserted into the stud receiving bore 9.
  • the protrusions 15,16 will be received in and engage with the upper portion of their respective screw holes 10,11. That is, the protrusions 15,16 will be accommodated in the respective cavities that are formed between the upper surface 5a of the support member 5 and the head 13a,14a of the screws 13,14.
  • the rotational shaft 12 is rotated to a locked position (i.e. the position illustrated in Fig. 4 ).
  • the locked position the rotational shaft 12 engages the groove 8 in the stud 7 and thereby prevents relative movement between the mounting plate 4 and the support member 5 in an axial direction of the stud.
  • the protrusions 15,16 efficiently prevents relative rotation between the mounting plate 4 and the support member 5 about the longitudinal axis of the stud 7.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Plates (AREA)
EP10161352A 2010-04-28 2010-04-28 Plaque de montage pour le montage amovible d'un viseur pour arme à feu portative Withdrawn EP2383537A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10161352A EP2383537A1 (fr) 2010-04-28 2010-04-28 Plaque de montage pour le montage amovible d'un viseur pour arme à feu portative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10161352A EP2383537A1 (fr) 2010-04-28 2010-04-28 Plaque de montage pour le montage amovible d'un viseur pour arme à feu portative

Publications (1)

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EP2383537A1 true EP2383537A1 (fr) 2011-11-02

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EP10161352A Withdrawn EP2383537A1 (fr) 2010-04-28 2010-04-28 Plaque de montage pour le montage amovible d'un viseur pour arme à feu portative

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022184070A1 (fr) * 2021-03-03 2022-09-09 西安华科光电有限公司 Viseur fermé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE580332C (de) * 1932-05-26 1933-07-08 Gustav Genschow & Co Akt Ges Fernrohraufpassung
FR2285590A1 (fr) * 1974-09-21 1976-04-16 Kind Albrecht Appareil de fixation facilement amovible pour lunette de visee
US5035487A (en) 1989-08-08 1991-07-30 Leupold & Stevens Method and apparatus for releasably mounting an optical device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE580332C (de) * 1932-05-26 1933-07-08 Gustav Genschow & Co Akt Ges Fernrohraufpassung
FR2285590A1 (fr) * 1974-09-21 1976-04-16 Kind Albrecht Appareil de fixation facilement amovible pour lunette de visee
US5035487A (en) 1989-08-08 1991-07-30 Leupold & Stevens Method and apparatus for releasably mounting an optical device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HENNEBERGER: "Henneberger Montageteile 2008", 1 January 2008 (2008-01-01), XP002598936, Retrieved from the Internet <URL:http://www.henneberger.de/downl/Mont_0308.pdf> [retrieved on 20100831] *
PRECISION SCOPES: "QR Mounts", 3 August 2008 (2008-08-03), XP002598937, Retrieved from the Internet <URL:http://web.archive.org/web/20080803191516/http://www.precisionscopes.com/leupold_quick_release_mounts> [retrieved on 20100901] *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022184070A1 (fr) * 2021-03-03 2022-09-09 西安华科光电有限公司 Viseur fermé

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