JP5506242B2 - Bolt action gun - Google Patents

Description

  The present invention relates to a bolt action gun, which reliably receives reaction force and impact generated in a barrel and receiver metal parts during shooting, and ensures the strength of the rootstock that supports the receiver. It eliminates the appearance of a diameter.

  Conventionally, as a bolt action gun, a receiver having a muzzle at one end and a base end of a barrel coupled, a trigger mechanism that fires a bullet below the receiver, and a trigger guard that protects the trigger mechanism trigger Each metal part is supported by a rootstock, and the rootstock is provided with a cavity that forms a magazine insertion part for mounting a magazine from below, and the bolt assembly is moved linearly into the receiver by operating a bolt handle. In some cases, a bullet is loaded into the chamber of the receiver, and an empty shell is discharged from the chamber after the gun is fired (see, for example, Patent Document).

US Pat. No. 68205

  By the way, in the bolt action gun described in the above-mentioned patent document, the receiver to which the base end portion of the barrel having the muzzle at one end is coupled is attached to the upper surface of the rootstock, and the trigger mechanism is provided at the lower portion of the receiver. Is provided. The reaction force and impact force applied to the metal parts consisting of the barrel and receiver when the gun is fired are received by the rootstock that is in contact with and supported by the receiver. The reaction force and impact can be received by the shoulder and arm of the shooter, but the rootstock has a cavity for mounting the magazine, so the strength of the rootstock at the part where the cavity is provided is reduced. In particular, there is a risk that the upper edge portion of the rootstock of the portion provided with the hollow portion that contacts and supports the receiver is damaged.

  Therefore, in the above bolt action gun, in order to increase the strength of the rootstock, it is conceivable to increase the thickness of the rootstock located in the outer area of the hollow portion, Then, the rootstock became thick and the weight increased, and the appearance was unnatural.

  The present invention solves the above-mentioned conventional drawbacks, and ensures that the reaction force and impact generated in the metal parts consisting of the barrel and receiver at the time of shooting secure the strength of the rootstock itself and reliably receive it by the rootstock. It is an object of the present invention to provide a bolt action gun that can be made smart without becoming a large diameter and without being unnatural in appearance.

The present invention has been made in view of the above problems, and the invention according to claim 1
A barrel with a muzzle at the tip and a chamber that is loaded with ammunition at the base,
A receiver in which a base end portion of the barrel is coupled to one end portion and a bolt assembly for performing a bolt action is accommodated in the other end portion, and a magazine mounting hole is opened in a lower surface portion;
A trigger housing that is attached to the shooter side from the magazine mounting hole on the lower surface of the receiver, and that houses the trigger mechanism;
A trigger guard comprising a trigger protection part for protecting the trigger, and a plate part having a magazine insertion hole through which the magazine is inserted;
A hollow portion having a magazine insertion portion through which the magazine is inserted, and a housing portion formed in communication with the magazine insertion portion and in which the trigger housing is accommodated, and the barrel and the trigger housing are attached A rootstock to which the receiver and the trigger guard are attached and attached from above and below,
Bolt action gun equipped with,
The attachment of the trigger housing to the receiver is performed in a state in which the upper end portion of the trigger housing is fitted in an attachment recess formed in the receiver.
The trigger housing is in contact with the receiving portion of the rootstock ;
Protrusions having contact surfaces facing the shooter side perpendicular to the axial direction of the barrel are formed on both side surfaces of the trigger housing,
A receiving surface that contacts the contact surface is formed on the inner surface of the rootstock,
The receiving surface is formed in a thick portion on the shooter side of the rootstock.

Moreover, the invention according to claim 2 of the present invention is the upper collar part which contacts the upper end edge part of the wall part which forms the magazine insertion part of the rootstock on both sides of the receiver in claim 1 Formed,
On both sides of the plate portion of the trigger guard, a lower collar is formed that contacts the lower edge of the wall of the rootstock.
The plate part of the trigger guard is screwed and fixed to the receiver at an axially longitudinal position of the barrel across the magazine insertion hole,
The wall part of the rootstock is configured to be sandwiched and held from above and below by the upper hook part and the lower hook part.

  According to the first aspect of the present invention, a barrel having a muzzle at the distal end and a chamber for loading ammunition at the proximal end and a proximal end of the barrel at one end are coupled. And a bolt assembly that performs a bolt action at the other end, and a receiver in which a magazine mounting hole is opened on the lower surface, and a trigger attached to the shooter side from the magazine mounting hole on the lower surface of the receiver A trigger housing having a mechanism portion, a trigger protection portion for protecting the trigger, a plate portion having a magazine insertion hole through which the magazine is inserted, a magazine insertion portion through which the magazine is inserted, A hollow portion having a housing portion formed in communication with the magazine insertion portion and housing the trigger housing, the barrel and the trigger housing A bolt action gun comprising: a receiver to which a ging is attached and a rootstock to which the trigger guard is attached and attached from above and below, and the attachment of the trigger housing to the receiver is formed in the receiver It is performed in a state where the upper end portion of the trigger housing is fitted in the mounting recess, and since the trigger housing is in contact with the accommodating portion of the rootstock, when shooting is performed, The reaction force and impact force generated in the metal parts consisting of the receiver are transmitted to the trigger housing fitted into the receiver mounting recess and integrated with the receiver, and the reaction force and impact force transmitted to the trigger housing are The pressure is received by the receiving part of the rootstock in contact with the trigger housing. The reaction force and impact force are received by the base of the base plate in which the trigger housing is stored, that is, the central part of the base plate that is most preferable in terms of strength, not the upper edge of the base plate with which the bar is abutted and supported. As a result, the strength of the rootstock itself can be secured and the reaction force and impact force can be reliably received by the rootstock.

  Moreover, since the rootstock itself does not require any production and processing such as thickening the thickness in the outer area of the cavity for mounting the magazine, the thickness of the rootstock is darkly The rootstock does not become thick, the rootstock becomes thicker, the weight increases, and the appearance does not become unnatural. The rootstock can be made smart.

Further, on both side surfaces of the front Symbol trigger housing, the protrusion having a contact surface facing the shooter side perpendicular to the axial direction of the barrel are respectively formed on the inner surface of the stock, the abutment surface Since the receiving surface is formed in the thick part on the shooter side of the rootstock, the reaction force and impact force at the time of shooting transmitted from the receiver to the trigger housing is the trigger. The receiving surface of the inner surface of the receiving portion of the base plate that comes into contact with the contact surfaces of the protrusions on both side surfaces of the housing is received in close contact with the inner surface of the base plate, and the receiving surface is on the shooter side of the base plate. Since it is formed in the thick portion, it is possible to secure the strength of the rootstock itself and reliably receive the reaction force and impact force by the rootstock without manufacturing the rootstock thickly.

According to the invention described in claim 2 of the present invention, in claim 1 , upper portions that are in contact with the upper edge of the wall portion that forms the magazine insertion portion of the rootstock are formed on both sides of the receiver. A hook part is formed, and a lower hook part that is in contact with a lower end edge part of the wall part of the rootstock is formed on both sides of the plate part of the trigger guard, and the plate part of the trigger guard is connected to the magazine The wall portion of the rootstock is sandwiched from above and below by the upper flange portion and the lower flange portion by being screwed and fixed to the receiver at the front and rear axial positions of the barrel across the insertion hole. Since it is comprised so that the pressing force toward the inner side of the rootstock may act on the wall part of the rootstock sandwiched and held between the upper and lower collar parts from above and below Reaction force and impact at the time of shooting The thickness of the wall of the rootstock is made thinner by adopting a robust structure that can withstand the reaction force and impact force. It can be a smart rootstock.

FIG. 1 shows an embodiment of the bolt action gun of the present invention, and is a side view showing an assembled state of a receiver, a trigger housing, and a trigger guard. FIG. 2 is a view of the assembled state of the receiver and the trigger housing as seen from below. FIG. 3 is a perspective view of the assembled state of the receiver and the trigger housing as seen from below. FIG. 4 is a side view showing the assembled state of the receiver and the trigger housing in the vicinity of the rear of the receiver. FIG. 5 is a side view of the entire completed gun as seen from the opposite side. FIG. 6 is a partial cross-sectional view of the non-barrel mounted as seen from the muzzle side showing the assembled state of the receiver and the trigger guard to the rootstock. FIG. 7 is a side view showing a receiver that also constitutes the present embodiment. FIG. 8 is a perspective view of the receiver constituting the present embodiment as seen from below. FIG. 9 is a view of the receiver constituting the present embodiment as seen from the muzzle side. FIG. 10 is a view of a rootstock constituting this embodiment as viewed from below. FIG. 11 is a perspective view of a rootstock constituting the present embodiment as viewed from above. FIG. 12 is a perspective view of a rootstock constituting the present embodiment as seen from the breech side. FIG. 13 is a side view of the trigger housing that also constitutes the present embodiment. FIG. 14 is a perspective view of the trigger guard that constitutes the present embodiment as seen from above.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  In the present embodiment, a barrel 2 having a muzzle at its distal end and a chamber 2a loaded with ammunition at its proximal end as shown in FIG. 1 is coupled to the proximal end of the barrel 2 at one end. And a bolt assembly (not shown) for receiving a bolt action at the other end, and a receiver 1 in which a magazine mounting hole 3 is opened on the lower surface, and the magazine on the lower surface of the receiver 1 The magazine insertion through which the magazine 7 is inserted, the trigger housing 4 which is attached to the archer side (right breech side in FIG. 1) from the mounting hole 3 and accommodates the trigger mechanism portion, the trigger protection portion 6 which protects the trigger 5 A trigger guard 10 having a plate portion 9 having a hole 8, a magazine insertion portion 11 through which the magazine 7 is inserted, and the trigger housing formed in communication with the magazine insertion portion 11. A hollow portion 13 having a housing portion 12 for housing the ring 4, and the barrel 2 on the left side (muzzle side) in FIG. 1 and the trigger housing 4 on the left side (muzzle side) in FIG. A bolt action gun including a receiver 14 and a rootstock 14 to which the trigger guard 10 is attached and attached from above and below, and the attachment of the trigger housing 4 to the receiver 1 is formed in the receiver 1 It is performed in a state in which the upper end portion 4a of the trigger housing 4 is fitted in the mounting recess 15, and the trigger housing 4 is in contact with the accommodating portion 12 of the rootstock 14.

  1, 4, and 13, 16 are protrusions formed on both side surfaces of the trigger housing 4, and the protrusions 16 and 16 are orthogonal to the axial direction X of the barrel 2 (Y The contact surface 16a faces the archer side, and the contact surface 16a contacts the receiving surfaces 17 and 17 formed on the inner surface of the rootstock 14 as shown in FIGS. It is like that. And the said receiving surfaces 17 and 17 are formed in the thick part 18 by the side of the shooter of the said rootstock 14. FIG.

  On both sides of the receiver 1, upper flange portions 20, 20 that abut against upper edge portions 19 a, 19 a of the wall portions 19, 19 forming the magazine insertion portion 11 of the rootstock 14 are formed, and the trigger guard 10 are formed on both side portions of the plate portion 9 with lower flange portions 21 and 21 that come into contact with lower end edges 19b and 19b of the wall portions 19 and 19 of the rootstock 14, and the plate portion of the trigger guard 10 is formed. 9 is screwed and fixed to the receiver 1 at the front and rear positions in the axial direction X of the barrel 2 with the magazine insertion hole 8 interposed therebetween, so that the wall portions 19 and 19 of the rootstock 14 become the upper wall It is comprised so that it may be inserted | pinched and hold | maintained by the part 20,20 and the said lower collar part 21,21 from upper and lower sides (refer FIG.1, FIG.6, FIG.9).

  The trigger housing 4 is provided with a trigger mechanism portion such as a shear (not shown in the figure) in which the rotation of the trigger 5 and the rotation of the trigger 5 are controlled. The lever L is provided so as to be able to be tilted and restrained or allowed to move.

  The trigger guard 10 surrounds the front and the left and right sides of the base 9 on the shooter side of the plate portion 9 on which the lower collars 21 and 21 are provided (the right breech side in FIG. 14). The lower end portion 4b of the trigger housing 4 is fitted into the supporting wall portion 9a, and the trigger 5 is passed through the hole 9b formed in the inner bottom portion surrounded by the supporting wall portion 9a. It faces the window hole 6a in the trigger protection part 6. In this way, the trigger guard 10 and the trigger 5 are assembled.

  In FIG. 6, in this embodiment, the inclination angle θ1 of the upper flanges 20 and 20 is 5 degrees downward with respect to the parallel line T ′ of the horizontal axis T passing through the center O of the through hole 1a provided in the receiver 1. The inclination angle θ2 of the lower flange portions 21 and 21 is 5 ° to 15 ° upward with respect to the parallel line T ″ of the horizontal axis T passing through the center O of the through hole 1a. Is formed.

  Reference numeral 22 denotes a screw for integrating the trigger guard 10 and the receiver 1 so as to sandwich the rootstock 14 via the trigger housing 4. Reference numeral 23 denotes an operation handle for performing a bolt action on the bolt assembly.

  The bolt action gun according to the present embodiment has the above-described configuration. For assembly, first, the upper end 4 a of the trigger housing 4 is fitted into the mounting recess 15 formed in the receiver 1, so that the receiver 1 is attached. The trigger housing 4 is attached integrally. Next, the fitting portion 1 b of the receiver 1 to which the barrel 2 and the trigger housing 4 are attached is fitted into the hollow portion 13 of the rootstock 14 from above so that the trigger housing 4 is accommodated in the accommodating portion 12 of the rootstock 14. In the hollow portion 13 of the rootstock 14, by fitting the fitting portion 10 a of the trigger guard 10 having the trigger protection portion 6 for protecting the trigger 5 included in the trigger housing 4, The fitting portions 1 b and 10 a are fitted from above and below so that the rootstock 14 is sandwiched between the receiver 1 and the trigger guard 10 with respect to the hollow portion 13.

  Then, the trigger guard 10 and the receiver 1 are integrated and fixed by screwing with several screws 22.

  In this way, the bolt action gun of the present embodiment is assembled, but the bolt action gun of the present embodiment is provided with the drug chamber 2a in which the ammunition is loaded at the base end portion and the magazine mounted on the lower surface portion. The receiver 1 to which the trigger housing 4 is integrally attached by fitting the upper end portion 4a to the mounting recess 15 on the archer side from the hole 3 fits the fitting portion 1b into the hollow portion 13 of the rootstock 14 from above. The trigger housing 4 is accommodated in the accommodating portion 12 that is communicated with the hollow portion 13 and provided at the center of the thick portions 18 and 18 on the shooter side. 2. The reaction force and impact force generated in the metal part composed of the receiver 1 are transmitted to the trigger housing 4 which is fitted in the mounting recess 15 of the receiver 1 and integrated with the receiver 1, The reaction force and impact force transmitted to 4 are received by the receiving portion 12 of the rootstock 14 in contact with the trigger housing 4, and for this purpose, the rootstock 14 on which the receiver 1 is contacted and supported. The reaction force and impact force are received by the accommodating portion of the rootstock 14 in which the trigger housing 4 is accommodated, that is, the central portion of the rootstock 14 that is most preferable in terms of strength. The strength of the tree 14 itself is secured, and the reaction force and impact force can be reliably received by the rootstock 14.

  At this time, on both side surfaces of the trigger housing 4, as shown in FIGS. 1, 4, and 13, contact surfaces 16 a that are orthogonal to the axial direction X (Y direction) of the barrel 2 and face the shooter side are provided. Protruding portions 16 and 16 are formed, and on the inner surface of the rootstock 14, receiving surfaces 17 and 17 that abut against the abutment surface 16a are provided on the shooter side of the rootstock 14 as shown in FIGS. The reaction force and impact force in the axial direction X generated in the metal part consisting of the barrel 2 and the receiver 1 during the shooting are formed on both side surfaces of the trigger housing 4. Protrusions 16, 16 having contact surfaces 16 a that are orthogonal to the axial direction X of the barrel 2 (Y direction) and face the shooter side are entirely on the receiving surfaces 17, 17 formed on the inner surface of the rootstock 14. Therefore, the strength of the rootstock 14 itself is ensured and the rootstock 14 is surely secured. It is accepted.

  On both sides of the receiver 1, as shown in FIGS. 6 and 9, as shown in FIGS. 6 and 9, upper hooks 19 a, 19 a of the wall portions 19, 19 forming the magazine insertion portion 11 of the rootstock 14 are in contact. Portions 20 and 20 are formed, and on both sides of the plate portion 9 of the trigger guard 10, as shown in FIGS. 1 and 6, lower end edges 19 b and 19 b of the wall portions 19 and 19 of the rootstock 14 and Lower abutment portions 21 and 21 are formed, and the plate portion 9 of the trigger guard 10 is screwed 22 with respect to the receiver 1 at the front and rear positions in the axial direction X of the barrel 2 sandwiching the magazine insertion hole 8. , 22 so that the wall portions 19, 19 of the rootstock 14 are sandwiched and held by the upper flange portions 20, 20, and the lower flange portions 21, 21 from above and below. Since it is configured, the upper collar 2 0, 20 and the wall portions 19, 19 of the rootstock 14 sandwiched and held by the lower flange portions 21, 21 from above and below, a pressing force directed toward the inner side of the rootstock 14 acts, and shooting The strength of the rootstock 14 itself that receives the reaction force and impact force at the time can be further increased, and a robust structure capable of withstanding the reaction force and impact force can be obtained.

  Therefore, the rootstock 14 itself does not require any manufacturing and processing such as increasing the thickness t in the outer region of the cavity 13 for mounting the magazine 7. The thickness t of the base plate 14 is not increased, the rootstock 14 becomes thicker, the weight increases, and it can be made smart without being unnatural in appearance, and manufacturing costs and material costs are reduced. .

  In the present embodiment, as shown in FIG. 6, the receiver 1 includes an upper collar portion 20, 20 projecting from the right and left sides above the fitting portion 1 b, and a lower collar projecting from the trigger guard 10. The portions 21 and 21 are such that the inclination angle θ1 of the upper flange portions 20 and 20 is, for example, 5 degrees downward with respect to the parallel line T ′ of the horizontal axis T passing through the center O of the through hole 1a provided in the receiver 1. The inclination angle θ2 of the lower flange portions 21 and 21 is 5 ° to 15 ° upward with respect to the parallel line T ″ of the horizontal axis T passing through the center O of the through hole 1a. Since the hollow portion 13 of the rootstock 14 is covered with the upper flange portions 20 and 20 protruding from the receiver 1 and the lower flange portions 21 and 21 protruding from the trigger guard 10, dust, sand, , Rain is prevented from entering the cavity 13 The

  Further, as described above, the upper flange portions 20 and 20 protruding from the receiver 1 and the lower flange portions 21 and 21 protruding from the trigger guard 10 have downward or upward inclination angles θ1 and θ2 as shown in FIG. It is formed at 5 degrees to 15 degrees, for example, preferably 10 degrees, downward or upward with respect to the parallel lines T ′ and T ″ of the horizontal axis T passing through the center O of the gun. Since the rootstock 14 can be gripped by hand without slipping, the operation can be performed stably and reliably.

  In addition, the inclination angle θ1 of the upper flanges 20 and 20 is formed to be 5 degrees to 15 degrees downward with respect to the parallel line T ′ of the horizontal axis T passing through the center O of the through hole 1a provided in the receiver 1. In addition, the inclination angle θ2 of the lower flange portions 21 and 21 is typically a case where the inclination angle θ2 is formed at 5 to 15 degrees upward with respect to the parallel line T ″ of the horizontal axis T passing through the center O of the through hole 1a. Although described, the inclination angle θ1 of the upper flange portions 20 and 20 and the inclination angle θ2 of the lower flange portions 21 and 21 are examples, and the increase and decrease can be freely changed. , 20 and the best inclination angle θ2 of the lower flange portions 21, 21 are 10 degrees, but are not limited thereto.

  Since the trigger guard 10 and the receiver 1 are fixed by being screwed with several screws 22 so as to sandwich the rootstock 14 from above and below, the trigger guard 10 and the receiver 1 are connected to the rootstock 14. Are integrated with each other. The trigger housing 4 has an upper end 4a fitted into the mounting recess 15 of the receiver 1, and a lower end 4b of the trigger housing 4 is provided on the trigger guard 10 so that the front and left and right side portions are provided. Since it is fitted and sandwiched from above and below by the receiver 1 and the trigger guard 10 in a state of being fitted in the branch wall portion 9a surrounded on three sides, it comprises the receiver 1, the barrel 2, the trigger housing 4, and the trigger guard 10. The mounting strength between the related metal parts and the rootstock 14 is robust and structurally superior.

  The present invention secures the strength of the rootstock itself and securely receives the reaction force and impact generated in the metal parts consisting of the barrel and receiver at the time of shooting by the rootstock itself. Suitable for applications and functions that can be made smart without being unnatural.

DESCRIPTION OF SYMBOLS 1 Receiver 1b Insertion part 2 Barrel 2a Medicine chamber 3 Magazine mounting hole 4 Trigger housing 4a Upper end part 5 Trigger 6 Trigger protection part 7 Magazine 8 Magazine insertion hole 9 Plate part 10 Trigger guard 11 Magazine insertion part 12 Storage part 13 Cavity part 14 units Wood 15 Mounting recess 16 Protrusion 16a Abutting surface 17 Receiving surface 18 Thick part 19 Wall part 20 Upper collar part 21 Lower collar part A Bolt action gun X axis direction Y intersecting direction Z height direction

Claims (2)

A barrel with a muzzle at the tip and a chamber that is loaded with ammunition at the base,
A receiver in which a base end portion of the barrel is coupled to one end portion and a bolt assembly for performing a bolt action is accommodated in the other end portion, and a magazine mounting hole is opened in a lower surface portion;
A trigger housing that is attached to the shooter side from the magazine mounting hole on the lower surface of the receiver, and that houses the trigger mechanism;
A trigger guard comprising a trigger protection part for protecting the trigger, and a plate part having a magazine insertion hole through which the magazine is inserted;
A hollow portion having a magazine insertion portion through which the magazine is inserted, and a housing portion formed in communication with the magazine insertion portion and in which the trigger housing is accommodated, and the barrel and the trigger housing are attached A rootstock to which the receiver and the trigger guard are attached and attached from above and below,
Bolt action gun equipped with,
The attachment of the trigger housing to the receiver is performed in a state in which the upper end portion of the trigger housing is fitted in an attachment recess formed in the receiver.
The trigger housing is in contact with the receiving portion of the rootstock ;
Both sides of the trigger housing face the shooter side perpendicular to the axial direction of the barrel.
Protrusions having contact surfaces are respectively formed,
A receiving surface that contacts the contact surface is formed on the inner surface of the rootstock,
The bolt action gun according to claim 1, wherein the receiving surface is formed in a thick portion on a shooter side of the rootstock . On both sides of the receiver, an upper collar is formed that contacts the upper edge of the wall that forms the magazine insertion portion of the rootstock,
On both sides of the plate portion of the trigger guard, a lower collar is formed that contacts the lower edge of the wall of the rootstock.
By the plate portion of the trigger guard, Ru is screwed fixed to the receiver in the axial direction before and after the position of the barrel sandwiching the magazine insertion hole,
Wall portion of the stock is bolt action gun according to claim 1, characterized in that said it has an upper eaves portion and the lower eaves portion configured to be held sandwiched from above and below.

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