WO2011157384A1

WO2011157384A1 - Hand guard for a weapon

Info

Publication number: WO2011157384A1
Application number: PCT/EP2011/002865
Authority: WO
Inventors: Goetz Coenen
Original assignee: Schmeisser Gmbh
Priority date: 2010-06-13
Filing date: 2011-06-10
Publication date: 2011-12-22
Also published as: DE102010023466A1

Abstract

The invention relates to a hand guard (1) for a weapon, said hand guard (1) surrounding at least part of the barrel of the weapon. The invention is characterised in that the hand guard (1) has at least one arm (1a, 1c) formed thereon and said arm (1a, 1c) is used to fix the hand guard (1) to the breech housing (2, 3).

Description

Hand protection for a weapon

The present invention relates to a hand guard for a weapon, wherein the hand guard at least partially surrounds the barrel of the weapon.

Generic hand guards are for example from the

US2010 / 0095575, US2006 / 0283067 and US2009 / 0288324.

The disadvantage of these weapons is that the hand protection single Lich to the so-called. "barrel groove" is attached.

From US 7,523,580 a weapon is known in which is connected by a zusätz ^¬ handy strap hand protection to the closure housing. The bracket is fastened by means of a bolt on the hand guard, so that the connection between the hand guard and lock housing by means of the bracket is relatively instabi l and can absorb only small forces. After ^¬ piece is further that the bracket engages in a slot of the eyelet forming tab of the upper closure housing part. This makes it impossible to use the hand guard of US 7,523,580 in conventional weapons that do not have a corresponding slot. The hand guard is further connected via a further bolt on the "barrel groove" which may also be referred to as a "running nut", and is connected via an outwardly directed narrow collar, which is attached to the "keeping nut".

CONFIRMATION COPY ter "is formed, centered.

The object of the present invention is therefore to provide a hand guard which can be easily and quickly fastened to the closure housing with little play and can also be mounted on existing closure housings without having to modify them.

This object is achieved with a hand guard with the features of claim 1. Further advantageous embodiments result from the features of the subclaims. Likewise, a weapon is claimed with a hand guard according to the invention.

The hand guard according to the invention is characterized in that the projections, which are referred to below as arms, are integrally formed on the hand guard and laterally embrace the lower closure housing, the arms have eyelets, which openings with the Durchgriffsöff- the upper and lower Lock housing are aligned, with a locking pin is pushed through the eyelets and through openings, so that all three components are firmly connected together at this point. The advantage of this embodiment is that the previous, upper and lower closure housing-containing closure bolts only have to be replaced by a somewhat longer closure bolt. No changes to the lock housing parts are necessary.

If the arms are adapted to the outer shape of the closure housing, it can be achieved that they lie over their entire length on the outside of the closure housing over a large area, so that there is a good positive connection in the longitudinal direction of the closure bolt. As a result, a high stability of the weapon is advantageously achieved.

The hand guard according to the invention is also advantageously used with a running-holding nut, which rests with its outer surface from the inside on the hand guard over the majority of its longitudinal extent, resulting in a positive connection in all directions perpendicular or transverse to the axis of the barrel of the weapon. About the arms of the hand guard is mounted in a form-fitting manner in the axial direction of the closure housing, so that advantageously results in a very torsionally rigid connection between the hand guard and lock housing and nut by the attachment via the nut and the arms.

The running nut has on its outer side elongated grooves, which serve to reduce the contact surface on the inner wall of the hand guard, so that only slight frictional forces when pushing the hand guard over the running nut are overcome. In addition, dirt, which is located on the surface of the nut or on the inner wall of the hand guard can be easily pushed into the grooves during sliding, so that even with soiled parts pushing is still possible. The invention is thus characterized over solutions from the prior art advantageous in that it consists of few parts and a simple and quick installation of the weapon is possible, only a locking pin the hand guard and the lower and the upper closure housing interconnects. In addition, the few parts result in a cost-effective production of the hand guard or the entire weapon, since existing parts can be taken over unchanged.

By means of a corresponding design of the closure bolts and the eyelets, it is possible to fully lift the upper closure housing part with hand protection fastened thereto from the lower closure housing part or by completely or only partially pulling out only one closure bolt, the upper closure housing part with hand protection attached thereto around the still remaining connection by means of the second locking pin to pivot relative to the lower closure housing part or fold away.

Hereinafter, the weapon of the invention is based on drawings explained in detail. Show it :

Fig. 1: side view of the interconnected parts hand guard, and lower and upper closure housing; Fig. 2: longitudinal section through the parts of Figure 1;

Fig. 3: unfolded weapon;

Fig. 4: perspective view of the hand guard, as well as the upper

Lock housing with a running nut attached thereto;

5 shows a longitudinal section through the upper closure housing with the retaining nut attached thereto and the hand guard;

6 shows a perspective view of the assembled parts with the closure pin half pulled out;

7 shows a longitudinal section through the arrangement according to FIG. 6;

Fig. 8: front view of the end face of the upper housing part to which the buttstock can be fastened;

Fig. 9-11: various views of the tether nut;

Fig. 12: Cross-sectional view through the hand guard in the area of

Running retaining nut

Fig. 13: Perspective view of the weapon according to the invention; FIG. 14: side view of the weapon according to FIG. 13;

14a: longitudinal section through the weapon according to FIG. 2

Fig. 15: Hand guard with upper closure housing part;

Fig. 16: Hand protection with molded prism-shaped projections. FIG. 1 shows a side view of the upper and lower closure housing parts 2, 3 and of the hand guard 1 connected to one another by means of the closure bolts 4. The hand guard 1 has arms 1a, 1c integrally formed on its lower side 1b and laterally surround the lower closure housing 2 , The arms la, lc are shaped like eyelets and have through openings le, lf, through which the closure pin can be inserted. The lower closure housing part 2 has in its two side walls also through openings 2a, which are aligned with the passage openings le, lf the arms la, lc. The tab 3a of the upper closure housing part 3 lies between the passage openings provided that the closure housing parts 2, 3 are inserted into one another. All passage openings of the parts 1, 2, 3 are aligned in the installed state, so that the parts can be connected to each other by means of the locking bolt 4. By means of the locking bolt 5 and the molded-on or attached to the upper housing part 3 tab 3b, the two closure housing parts 2, 3 are connected to one another at a second point.

As shown in Figure 3, the weapon by pulling out only the locking pin 5, can be folded apart. The connection between see the upper closure housing part 3, the hand guard 1 and the lower closure housing part 2 then exists only on the locking pin 4, which serves as a pivot bearing.

FIG. 4 shows a perspective view of the hand guard 1, as well as of the upper closure housing 3 with a running-hold nut 6 fastened thereto. The one arm 1a has a passage opening le in the form of a bore. The other arm lc is in the form of a hook, wherein the passage opening lf has a larger diameter than the opening le of the other arm la. The inner diameter of the access opening lf is equal to or only slightly larger than the outer diameter of the head 4a of the locking bolt 4. The lateral opening lg of the hook lc is so wide that the portion 4b of the locking pin to the side can be pulled out. The inner diameter of the opening le of the arm la corresponds to the outer diameter of the portion 4b of the locking bolt. This makes it possible that by not completely pulling out the locking bolt 4 from the lower closure housing part 2, the upper closure housing part attached thereto

Handguard 1 can be lifted and disassembled. However, it is of course also possible that both arms the same, that is, either as the arm la or as the arm lc can be formed.

FIG. 5 shows a longitudinal section through the parts shown in FIG. The running nut 6 is connected by its internal thread with the upper closure housing part 3. The inner diameter of the hollow hand guard 1 is adapted to the outer diameter of the outer race nut 6, so that the hand guard 1 can be slid accurately on the wheel nut 6. As a result, unwanted relative movements between the hand guard, the closure housing and the barrel of the weapon are avoided.

FIG. 6 shows a perspective view of the assembled parts with the closure pin 4 pulled out halfway. FIG. 7 shows a longitudinal section through the arrangement according to FIG. 6, from which it can clearly be seen that the closure pin 4 only has to be pulled out until it is no longer in the passage opening of the tab 3a of the upper closure housing part 3 engages. In this position, the upper closure housing part 3 can already be separated together with the hand guard 1 from the lower closure housing part 2, since the arm lc is formed as a hook with a lateral opening lg, as shown in Figure 4.

FIG. 8 shows a front view of the front side of the lower housing part 2 on which the rear shaft can be fastened, wherein the closure bolt 4 is in the position shown in FIGS. 6 and 7. FIGS. 9 to 11 show different views of the running nut 6. The running nut has on its outside in longitudinal extension extending grooves 6a for reducing the Konta ktfläche with the inner wall ld of the hand guard 1 on. The contact surface 6a is thus limited only to the narrow end faces 6d.

On its inner wall, the running nut 6 has an internal thread 6b and an inwardly directed collar 6c. With the internal thread 6b, the running nut 6 is screwed on a frontal thread of the upper Verschlussgehä uses, in which case the collar 6c the molded on the barrel of the weapon and outwardly directed collar presses firmly against the upper closure housing. FIG. 12 shows a cross-sectional view through the hand guard 1 in the region of the running hold nut 6.

FIG. 13 shows a perspective view of a weapon 1 which has not yet been fully assembled according to the invention. The weapon 1 has a closure housing 12, which may be designed in one or more parts. On the closure housing 12, a forearm 1 in the form of the hand guard and a butt shaft 13 is attached. The rear shaft 13 is screwed by means of an external thread into an internal thread of the closure housing 12 and secured by means of the connecting means 14 which is pressed with a nut 16 in the assembled state against the closure housing 2 frontally, against rotation about the axis A of the screw. The connecting means has a cross-sectionally circular projection 14a, which in a Ausneh ^¬ tion 13a of the rear shaft parallel to the axis A slidably rests. By the outer contour of the projection 14a adapted recess 13a, the interposed over the male threaded portion 13b of the H interschafts 13 connecting means 14 are not pivoted about the axis A around ver ^¬ , but is positively held in the position shown in Figure 13 Darge ^¬ adjusted position and can only by adjusting the

Nut 16 are adjusted in the axial direction of the axis A. To assemble the weapon 1, the connecting means 14 is first together with the nut nut 16 on the external thread portion 13 b of the H union pushed so far or screwed that then the rear shaft 13 with its external thread 13g sufficiently far into the internal thread 12g of Anschraubbereichs 12a is screwed. As soon as the rear shaft 13 is sufficiently screwed into the closure housing 12, the connecting means can be moved in the direction of the closure housing 12 by turning the nut 16 so that the positive connection between the connection means 14, in particular between its projections 14b, 14d, and the closure housing 12 is formed becomes. If a sufficiently high contact pressure is achieved on the closure housing 12, the connecting means 14 is securely held in position. In addition, measures can be taken to prevent twisting or loosening of the nut 16 from the pressure position out.

The projections 14b are formed such that they come in the mounted state of the weapon 1 on the outside of the closure housing 12 with the least possible or no play to the plant. The outer contour 12k of the closure housing 12 in the area 12a, which forms the internal thread 12g, is not concentric and circular in cross-section to the axis A, so that only by the projections 14b, a rotation is given. In addition, a further projection 14d may be provided, which engages in an end-side recess 12b, in particular in the form of a blind hole, of the closure housing 12 to form a positive connection for an anti-twist device. By this additional projection 14d a double positive connection between the connecting means 4 and closure housing 12 is realized.

Figures 14 and 14a show a side view and a longitudinal section through part of the weapon 1 according to Figure 13. The projection 14a is located in the recess 13a of the rear shaft 13, wherein the projection 4a in its axial length must be formed only so long that he rests positively in the recess 13a against rotation about the axis A when pressed against the closure housing 12 connecting means 14. The recess 13a is to be formed in its axial length so long that the connecting means 14 can be adjusted sufficiently far to the left by means of the screw ^¬ benmutter 16.

Figure 15 shows the the upper closure housing part 3 together ^¬ quantitative infected hand guard 1. The hand guard 1 has two projections 20 which extend in Längserstreckungshchtung the weapon partially along the upper closure housing part 3 and rest against this side, such that an additional longitudinal guide is given, but also simultaneously prevent twisting of the hand guard 1 to the upper closure housing part 3 sure. This is achieved in that the projections 20 close the upper closure housing part 3 on both sides ^¬ . In order to achieve a particularly good fit accuracy, the contact surface may be curved or prism-shaped. In FIGS. 15 and 16, the abutment surface is shown prism-shaped.

FIG. 16 shows a perspective view of the hand guard 1 with the integrally formed prism-shaped projections 20, which are arranged at a distance from one another on the front side of the hand guard 1 facing the upper closure housing part 3 and protrude beyond it.

Claims

P a n t a n s p r e c h e

Hand guard (1) for a weapon, wherein the hand guard (1) at least partially surrounds the barrel of the weapon, characterized in that the hand guard (1) at least one molded arm (la, lc), wherein the arm (la, lc) for Attach the hand guard (1) to the lock housing (2, 3).

Hand protection according to claim 1, characterized in that the at least one arm (la, lc) laterally surrounds the lower closure housing (2).

Hand guard according to claim 1 or 2, characterized in that the closure housing (2) rests in the assembled state between two arms (la, lc) which are arranged parallel to one another and are integrally formed on the hand guard (1).

Hand protection according to one of claims 1 to 3, characterized in that a connecting bolt or connecting pin (4) passes through the at least one arm (la, lc) of the hand guard (1) and the upper and lower closure housing (2,3) for their connection.

Hand protection according to claim 4, characterized in that at least one arm (lc) of the hand guard (1) has a hook shape at its free end, so that in still in the lower closure housing (2) befindlichem connecting pin or connecting pin (4), the upper closure housing (3 ) together with the attached hand guard (1) from the lower closure housing part (2) can be raised or folded up.

6. Hand protection according to one of the preceding claims, characterized in that on the upper closure housing part (3) a Laufhaltemutter (6) attachable, in particular screwed, or is attached, wherein the hand guard (1) on the Laufhalteemutter (6) can be pushed, wherein the inner wall (ld) of the hollow handguard (1) has an inner diameter at least in the region of the running retaining nut (6), which corresponds to the outer diameter of the Laufhaltemutter (6) or is slightly larger, so that the hand guard (1) in particular fit exactly on the Laufhaltemutter (6) can be pushed.

Hand guard according to claim 6, characterized in that the outer nut (6) has axially extending longitudinal grooves (6a) for reducing the contact surface (6d) against the inner wall (ld) of the access opening of the hand guard (1).

Hand protection according to one of the preceding claims,

characterized in that on the hand guard (1) projections (20) are integrally formed in the assembled state of the weapon, the closure housing (2, 3), in particular the upper closure housing part (3), laterally partially engage and abut this with its contact surface (20p) ,

Hand protection according to claim 8, characterized in that the abutment surface (20p) of the projection (20) has at least two abutment surfaces arranged at an angle which form a prism guide, in particular together with the contact surfaces of the closure housing part (2, 3).

Weapon with a hand guard (1) according to one of the preceding claims.

A weapon according to claim 10, characterized in that the hand guard (1) and the upper closure housing (3) are formed integrally or in one piece. A weapon according to claim 10 or 11, characterized in that the arms (la, lc) of the hand guard (1) are adapted to the outer contour of at least the lower closure housing (2), such that they in the mounted state of the weapon over a large area on the closure housing (2 ) issue.

Weapon according to one of claims 10 to 12, characterized in that the two closure pins (4, 5), with which the closure housing parts (2, 3) are interconnected, are identical, wherein the hand guard (1) an arm (la) as a closed Eyelet and the other arm (lc) an open eyelet in the form of a hook is formed and the upper system housing for receiving the locking pin (5) is formed.