Auxiliary loading magazine well for AK series rifles
The auxiliary loading magazine well for AK series rifles addresses the complexity of magazine loading by providing guided insertion, significantly reducing the time required for magazine changes and improving ergonomics without altering the rifle's structure or weight.
Patent Information
- Application Number
- CN201910749914.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-08-14
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2039-08-14
AI Technical Summary
The existing AK series rifles have a complicated magazine loading process due to their arc-shaped magazine design and lack of guide surfaces, leading to increased time and difficulty in magazine replacement, especially under poor visibility conditions.
An auxiliary loading magazine well with symmetrical side and front guide plates, a clamping plate, and a magazine buckle fixing piece, which guides the magazine into the firearm receiver quickly and securely without altering the original structure.
The auxiliary loading magazine well allows for rapid and ergonomic magazine changes, reducing the loading time by about 1 second to 2.5 seconds, enhancing the usability and ergonomics of AK series rifles without increasing weight or affecting performance.
Smart Images
Figure CN110455121B_ABST
Abstract
Description
Technical Field
[0001] The invention patent relates to the field of military and civilian firearms, and in particular to an auxiliary loading magazine well. Background Art
[0002] In the military field, the speed at which shooters replace gun magazines during combat has a great impact on the soldiers' battlefield survivability. In the training and exercises of various countries' armies, including our army, requirements are put forward for the time and accuracy of soldiers replacing magazines. In the civilian field, in various shooting training or competitions, the time to complete the action is often included in the assessment results or competition results. Trying to shorten the time to replace magazines through various methods has become a common pursuit of contestants. In the field of modern firearms design and manufacturing, more and more products are gradually paying attention to this performance requirement, adding magazine guide interfaces from the structure to improve the ergonomics of firearms, so that operators can complete the action of loading magazines more easily, conveniently and quickly.
[0003] Due to structural limitations, such as Figure 1 , 2 As shown, the existing AK series rifles basically use an arc-shaped magazine 8 for feeding and a "front hanging and rear locking" magazine loading method, that is, first hang the front part of the magazine into the hook 71 under the barrel seat at the front of the gun receiver 7, and then rotate the magazine 8 counterclockwise around the hook 71 under the barrel seat until the rear part is locked into the handguard 72 and locked by the magazine buckle 73. The loading action is more complicated than the magazine direct insertion loading action of rifles such as M16. At the same time, in order to ensure the reliability of feeding, the position of the magazine in the gun should be accurate and firm, and there should be no gap that may cause the magazine to shift. Therefore, the magazine interface 75 on the gun receiver 7 is closely matched with the outline of the magazine, and there is no guide surface in the structure to guide the magazine to be loaded smoothly. During operation, the shooter often needs to flip the gun to an angle where the magazine interface 75 can be observed before the magazine can be aligned with the interface, which seriously affects the time for changing bullets in combat and competition. In the case of poor visibility or critical and psychologically tense conditions such as dusk and night, this problem of difficulty in operation is more obvious. Summary of the invention
[0004] The purpose of the present invention is to overcome the problems of complicated magazine loading process and poor ergonomics of the existing AK series rifles, and to provide an auxiliary loading magazine well for AK series rifles which has a simple structure, is reliable to use, is easy to disassemble and assemble, can speed up the magazine changing speed, and can effectively improve the ergonomics of the whole gun.
[0005] The technical solution adopted by the present invention is an auxiliary loading magazine well for AK series rifles, the main points of which are: it consists of a magazine well body, a clamping plate, a magazine buckle fixing piece and screws, the magazine well body consists of two left-right symmetrical side guide plates and a front guide plate connecting the top ends of the front parts of the left and right side guide plates, the inner contour of the lower end face of the magazine well body is larger than the outer contour of the cross section of the top of the magazine, the spacing between the lower edges of the inner surfaces of the left and right side guide plates is larger than the thickness of the magazine, the upper edge of the rear end face of the front guide plate is connected with the hook under the barrel seat, the inner surface of the rear end of the magazine well body is machined with a matching surface that matches with both sides of the handguard, the two sides of the rear part of the magazine well body are machined with fixing holes for inserting the magazine buckle fixing piece, the center line of the fixing hole coincides with the center line of the magazine buckle shaft hole, and the rear end face is machined with a pair of screw holes that match with the screws to fix the clamping plate.
[0006] The magazine well body passes through the fixing hole and the magazine buckle shaft hole on the firearm through the magazine buckle fixing piece, and the rear end passes around the hand guard through the clamping plate to fix the whole on the firearm. When in use, the present invention guides the guide plates on the left and right sides of the magazine well body and the front guide plate so that the magazine can quickly, conveniently and accurately enter the hook under the barrel seat and the magazine interface from the larger opening of the magazine well body to complete the magazine loading.
[0007] The inner surfaces of the left and right guide plates are inclined, and are inclined inward from bottom to top, and the distance between the upper edges of the inner surfaces of the two is not less than the thickness of the magazine. The inner surface is inclined, which can better play a guiding role.
[0008] The rear end surface of the front guide plate is inclined from bottom to top toward the hook under the barrel seat, so as to guide the front end of the magazine into the hook under the barrel seat. Since the first action of magazine loading is to accurately hang the front part of the magazine into the hook under the barrel seat at the front part of the firearm receiver, the present invention uses the rear end surface of the front guide plate as a guide surface for the front end surface of the magazine, and the inner surfaces of the left and right guide plates as left and right limiting surfaces, so that the front end of the magazine can be accurately and quickly hung into the hook under the barrel seat, thereby realizing rapid magazine loading.
[0009] A profiled notch is processed on the upper rear part of the magazine well body to make way for the hand guard and the rivet. Since the present invention is an accessory of an existing firearm, the present invention designs the profiled notch to make way without changing the existing firearm.
[0010] The left and right guide plates are symmetrically provided with a plurality of weight-reducing holes for reducing weight. In order not to significantly increase the overall weight and affect the service performance, the weight of the present invention is reduced by the weight-reducing holes while obtaining sufficient structural strength.
[0011] The front end faces of the left and right guide plates are processed with arc guide surfaces. The arc guide surfaces make the transition between the left and right guide plates and the gun body smooth and beautiful, and avoid hooking the gun strap and clothing.
[0012] A pair of countersunk through holes are processed in the middle of the clamping plate for inserting screws to fasten the magazine well body. A vertical mating surface that cooperates with the handguard is processed at the front end to assist in positioning, and a transverse reinforcing rib is processed at the top of the rear end.
[0013] Since the present invention is an accessory of an existing firearm, without changing the existing firearm, the size of the design of the present invention is determined by the size of the firearm to be matched therewith. For example, the matching surfaces at the rear ends of the left and right guide plates of the magazine well body are used to clamp the handguard, so the distance between the two matching surfaces is greater than or equal to 16mm (because the thickness of the handguard is 16mm). The fixing hole is used as a connecting hole between the present invention and the firearm, and also becomes a reference point for processing each surface of the present invention. Therefore, the center diameter of the fixing hole is greater than or equal to φ5mm (because the diameter of the magazine buckle shaft hole is φ5mm), and the vertical distance between the center and the upper plane A is less than Equal to 19.2mm (because the vertical distance between the lower plane of the gun receiver and the center of the magazine buckle axis hole is 19.2mm), the horizontal distance between its center and the upper edge of the rear end surface of the front guide plate is greater than or equal to 77.5mm (because the horizontal distance between the hook under the barrel seat and the center of the magazine buckle axis hole is 77.5mm), the horizontal distance between its center and the rear end surface is less than or equal to 11.5mm (the horizontal distance between the rear end surface of the handguard and the center of the magazine buckle axis hole is 11.5mm), and the spacing between the upper edges of the inner surfaces of the left and right guide plates is greater than or equal to 26.5mm (because the thickness of the magazine is 26.5mm).
[0014] The diameter of the cylindrical positioning surface on the magazine buckle fixing part is less than or equal to the hole diameter of the magazine buckle shaft hole, that is, φ5mm, and the length is greater than or equal to 25mm.
[0015] The inclined angle between the inner surfaces of the left and right guide plates on the magazine well body is 15-25°, preferably 20°. According to experiments, when the angle is 20°, the magazine enters most smoothly. This ensures the use effect while not significantly increasing the horizontal size of the assembled firearm and affecting the service performance.
[0016] In order to obtain sufficient structural strength without significantly increasing the overall weight and affecting service performance, the magazine well body and compression plate can be made of lightweight alloys or high-strength polymer materials, such as aviation aluminum alloys or glass fiber reinforced plastics; the magazine buckle fixings are used for positioning and fastening, so they can be made of ordinary high-quality steel.
[0017] The beneficial effects of the present invention are as follows: the auxiliary loading magazine well for AK series rifles has a delicate structure, a moderate size, is simple and reliable, and is easy to disassemble and assemble. It can be quickly assembled without making any destructive modifications to the original gun structure. An auxiliary device for guiding the magazine to be smoothly loaded into the gun body is provided for the AK series rifles, so that the gun operator can complete the magazine loading action more quickly when the line of sight is poor or in an emergency situation. The present invention has good applicability to the existing AK series rifles, does not affect the original performance of the gun, and significantly improves the ergonomics of the gun without significantly increasing the weight of the entire gun and the burden on the shooter. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic diagram of the structure of an existing firearm receiver
[0019] Figure 2 A schematic diagram of loading an existing firearm magazine
[0020] Figure 3 This is a schematic diagram of the structure of the patent of this invention
[0021] Figure 4 This is a schematic diagram of the structure of the magazine well body in the patent of this invention
[0022] Figure 5 This is a schematic diagram of the structure of the clamping plate in the patent of this invention.
[0023] Figure 6 A schematic diagram of the structure of the bolt in the magazine buckle fixing member in the patent of the present invention
[0024] Figure 7 This is the installation diagram of the patent of this invention
[0025] Figure 8 This is the usage status diagram of the patent of this invention
[0026] Wherein: 1 magazine well body 11 matching surface 12 fixing hole 13 profiling notch 14 screw hole 15 side guide plate 16 reduction hole 17 front guide plate 18 arc guide surface 2 clamping plate 21 countersunk screw hole 22 vertical matching surface 23 transverse reinforcing rib 3 magazine buckle fixing part 31 bolt 31a wrench matching head 31b cylindrical positioning surface 31c thread 32 nut 33 washer 4 screw 7 gun receiver 71 hook under barrel seat 72 handguard 72a magazine buckle shaft hole 73 magazine buckle 74 magazine buckle shaft 75 magazine interface 76 rivet 8 magazine. DETAILED DESCRIPTION
[0027] The present invention is described in detail below in conjunction with the drawings. The following embodiments may enable technicians in this field to better understand the present invention, but do not limit the present invention in any form.
[0028] like Figure 3-8 As shown, the front, back, left, right, up and down in the manual are based on Figure 7 The invention discloses an auxiliary loading magazine well for AK series rifles, which is an accessory of the existing AK series rifles. On the basis of not changing the existing firearms, the size of the design of the invention is determined by the size of the relevant parts of the firearms matched therewith. The magazine well body 1, the pressing plate 2, the magazine buckle fixing member 3 and the screw 4 are composed of two symmetrical side guide plates 15 and a front guide plate 17 connecting the top ends of the front parts of the left and right side guide plates. The inner contour of the lower end surface of the magazine well body is similar to the outer contour of the magazine and is larger than the outer contour of the cross section of the top of the magazine. The left and right side guide plates are symmetrical. The spacing between the lower edges of the inner surface of the guide plate is greater than the thickness of the magazine. The upper edge of the rear end surface of the front guide plate is connected with the hook under the barrel seat, which can also be called leveling. The inner surface of the rear end of the magazine well body is processed with a matching surface 11 that matches the two sides of the handguard to complete its lateral positioning. The two sides of the rear part of the magazine well body are processed with fixing holes 12. The center line of the fixing hole coincides with the center line of the magazine buckle shaft hole, which is used to align with the magazine buckle shaft hole 72a on the handguard 72 and penetrate the magazine buckle fixing piece to complete its vertical positioning and tightening. A pair of screw holes 14 are processed on the rear end surface to match the screws for fixing the clamping plate. In order to reduce the size after assembly and prevent the screw head from affecting the action of the finger pressing the trigger of the firearm, the screw 4 is preferably a countersunk screw.
[0029] A pair of contoured notches 13 are machined on the upper rear part of the magazine well body to make way for the hand guard 72 and the rivet 76. The inner surfaces of the left and right guide plates are inclined, tilting inward from bottom to top, and the distance between the upper edges of the inner surfaces of the two is not less than the thickness of the magazine. It is used to guide the magazine 8 from the left and right sides to the center. There are a number of weight-reducing holes 16 symmetrically distributed on it to reduce the weight. The rear end surface of the front guide plate 17 tilts from bottom to top toward the hook under the barrel seat to guide the magazine 8 in front and guide the front end of the magazine into the hook under the barrel seat. The front end surfaces of the left and right guide plates are machined with arc guide surfaces 18 to make a smooth transition between the magazine well body 1 and the gun receiver 7 to avoid hooking the gun strap or clothing; a pair of screw holes 21 are machined in the middle of the clamping plate 2 to insert the screws 4 to tighten the magazine well body 1, and a vertical mating surface 22 that matches the hand guard 72 is machined at the front end to assist its positioning. , and while ensuring the thickness of the countersunk through hole 21, the front and rear dimensions of the clamping plate 2 are reduced. A transverse reinforcing rib 23 is processed on the top of the rear end to increase the tensile strength and prevent the clamping plate 2 from bending forward during tightening; the magazine buckle fixing part 3 is composed of a bolt 31, a nut 32, a washer 33, etc. The head of the bolt 31 is a wrench matching head 31a, which is used to insert the corresponding wrench to apply torque to complete the tightening. In order to obtain sufficient torque and facilitate operation, the central matching shape is preferably a hexagonal shape, the middle part is a cylindrical positioning surface 31b that matches the fixing hole 12 and the magazine buckle shaft hole 72a, and the tail end is a thread 31c that matches the nut 32. In order to obtain sufficient torque and facilitate operation, the nut 32 is preferably a hexagonal nut, and in order to make the overall installation firm, the washer 33 is preferably a spring washer. Among them, the nut 32, the washer 33 and the screw 4 can be selected from standard parts, and the specifications can be selected according to actual needs. This article will not be described in detail.
[0030] Since the present invention is an accessory of an existing firearm, without changing the existing firearm, the size of the design of the present invention is determined by the size of the firearm and the firearm receiver 7 that match it. For example, the mating surfaces at the rear ends of the left and right guide plates of the magazine well body are used to clamp the hand guard, so the distance between the two mating surfaces is greater than or equal to 16mm (because the thickness of the hand guard is 16mm), and 16mm is preferably selected. The fixing hole is used as a connecting hole between the present invention and the firearm, and also becomes a reference point for processing each surface of the present invention. Therefore, the center diameter of the fixing hole is greater than or equal to φ5mm (because the diameter of the magazine buckle shaft hole is φ5mm), and φ5mm is preferably selected. The vertical distance between the center and the upper plane A is less than or equal to 19.2mm (because the diameter of the magazine buckle shaft hole is φ5mm). The vertical distance between the lower plane of the gun receiver and the center of the magazine buckle axis hole is 19.2mm), 19.2mm is preferred, the horizontal distance between its center and the upper edge of the rear end surface of the front guide plate is greater than or equal to 77.5mm (because the horizontal distance between the hook under the barrel seat and the center of the magazine buckle axis hole is 77.5mm), 77.5mm is preferred, the horizontal distance between its center and the rear end surface is less than or equal to 11.5mm (the horizontal distance between the rear end surface of the handguard and the center of the magazine buckle axis hole is 11.5mm), 11.5mm is preferred, the spacing between the upper edges of the inner surfaces of the left and right guide plates is greater than or equal to 26.5mm (because the thickness of the magazine is 26.5mm), 26.5mm is preferred.
[0031] The diameter of the cylindrical positioning surface 31b on the magazine buckle fixing part 3 is less than or equal to the hole diameter of the magazine buckle shaft hole, preferably φ5mm, and the length is greater than or equal to 25mm.
[0032] The tilt angle of the inner surface of the left and right side guide plates 15 on the magazine well body 1 can be selected according to the shooter's habits and the purpose of the firearm, and is generally 15-25°; in order to ensure the use effect of auxiliary guide magazine loading, while not significantly increasing the lateral size of the assembled firearm and affecting service performance, the angle is set to 20° in this application. The number, size, shape and other parameters of the reduction holes 16 on the side guide plate 15 can be customized according to needs; in order to ensure structural strength and make the appearance more beautiful, the holes are set to six quadrilaterals symmetrically distributed on the left and right in this application.
[0033] like Figure 7-8As shown, the specific implementation method of the present invention is: first, use a punch to push the magazine buckle shaft 74 on the gun receiver 7 sideways, and then push the magazine well body 1 from bottom to top to the limit position while ensuring that the matching surface 11 and the contoured notch 13 are aligned with the hand guard 72 and the rivet 76. At this time, the fixing hole 12 should be directly opposite to the magazine buckle shaft hole 72a, and the upper plane of the magazine well body 1 should be flush with the lower plane of the gun receiver 7; then, the magazine buckle fixing member 3 (including the bolt 31, the nut 32 and the washer) is fixed to the magazine well body 1. 33) Insert the magazine well body 1 into the fixing hole 12 in sequence as shown in the figure, and tighten it slightly with the corresponding spanner. With the vertical mating surface 22 facing forward and the countersunk through hole 21 aligned with the screw hole 14, push the clamping plate 2 from the back to the front to the limit position, and install two screws 4 to tighten it. At this time, under the tensile torque of the clamping plate 2 and the screws 4, the magazine well body 1 will have a clockwise rotation trend around the magazine buckle fixing part 3, which will make the upper plane of the magazine well body 1 close to the lower plane of the gun receiver 7 and cannot be loosened. Finally, tighten the bolt 31 and nut 32 in the magazine buckle fixing part 3 with a spanner at the same time. If the washer 33 is a spring washer, it will generate an axial preload to ensure that the magazine buckle fixing part 3 will not loosen by itself during use.
[0034] When loading the magazine 8, the shooter no longer needs to turn the firearm over to an angle where the magazine interface 75 is visible. The shooter only needs to roughly insert the magazine 8 into the auxiliary loading magazine well in a normal gun holding posture. The side guide plates 15 on both sides and the front guide plate 17 in front can accurately guide the magazine 8 to a suitable position under the firearm receiver 7 and allow it to smoothly enter the magazine interface 75. The magazine 8 will then be buckled with the hook 71 under the barrel seat. At this time, the magazine 8 can be rotated counterclockwise according to the normal loading action so that it is locked by the magazine buckle 73, and the loading of the magazine 8 can be quickly completed.
[0035] The beneficial effects of the present invention are as follows: Under normal circumstances, shooters who use the rifle for the first time or are not skilled in operation generally have problems with magazine positioning and repeated loading due to the lack of skills in using the AK series rifles. After experiments and verification, it can be basically guaranteed that the magazine can be loaded successfully at one time after adding the present device. When a shooter who has undergone certain training operates, the time to complete the standard magazine loading action is generally about 3 seconds to 3.5 seconds. After experiments and verification, after adding the present device, the loading action time is about 2 seconds to 2.5 seconds, which can be shortened by about 1 second.
Claims
1. An auxiliary loading magazine well for AK series rifles, characterized by: It consists of a magazine well body (1), a pressing plate (2), a magazine buckle fixing piece (3) and screws (4). The magazine well body consists of two symmetrical side guide plates (15) and a front guide plate (17) connecting the top ends of the left and right side guide plates. The inner contour of the lower end surface of the magazine well body is larger than the outer contour of the cross section of the top of the magazine. The spacing between the lower edges of the inner surfaces of the left and right side guide plates is larger than the thickness of the magazine. The upper edge of the rear end surface of the front guide plate is connected to the hook under the barrel seat. The inner surface of the rear end of the magazine well body is processed with a matching surface (11) that matches with the two sides of the handguard. The two sides of the rear of the magazine well body are processed with fixing holes (12) for inserting the magazine buckle fixing piece (3). The center line of the fixing hole coincides with the center line of the magazine buckle shaft hole. The rear end surface is processed with a pair of screw holes. (14), the center line of the screw hole (14) is perpendicular to the center line of the fixing hole, and is used to fix the clamping plate in cooperation with the screw to lock the clamping plate longitudinally; the inner surfaces of the left and right guide plates are inclined from bottom to top, and the distance between the upper edges of the inner surfaces of the two is not less than the thickness of the magazine; the rear end surface of the front guide plate is inclined from bottom to top toward the hook under the barrel seat, and guides the front end of the magazine into the hook under the barrel seat; a pair of countersunk through holes (21) are processed in the middle of the clamping plate (2) for inserting screws (4) to fasten the magazine well body (1), the front end is processed with a vertical matching surface (22) that matches the hand guard for auxiliary positioning, and a transverse reinforcing rib (23) is processed on the top of the rear end; the left and right guide plates are symmetrically distributed with a plurality of weight reduction holes (16) for reducing weight.
2. The auxiliary loading magazine well for AK series rifles according to claim 1 is characterized in that: The reduction holes are six quadrilaterals that are symmetrically distributed on the left and right sides.
3. The auxiliary loading magazine well for AK series rifles according to claim 1 is characterized in that: A contoured notch (13) is machined on the upper rear of the magazine well to provide space for the hand guard and rivets.
4. The auxiliary loading magazine well for AK series rifles according to claim 1 is characterized in that: The front end surfaces of the left and right guide plates are machined with arc guide surfaces (18).
5. An auxiliary loading magazine well for AK series rifles according to any one of claims 1 to 4, characterized in that: The spacing between the mating surfaces (11) at the rear ends of the left and right guide plates of the magazine well body (1) is greater than or equal to the thickness of the hand guard, the central aperture of the fixing hole (12) is greater than or equal to the aperture of the magazine buckle shaft hole, the vertical distance between its center and the upper plane A is less than or equal to the vertical distance between the lower plane of the gun receiver and the center of the magazine buckle shaft hole, the horizontal distance between its center and the upper edge of the rear end surface of the front guide plate (17) is greater than or equal to the horizontal distance between the hook under the barrel seat and the center of the magazine buckle shaft hole, the horizontal distance between its center and the rear end surface is less than or equal to the horizontal distance between the rear end surface of the hand guard and the center of the magazine buckle shaft hole, and the spacing between the upper edges of the inner surfaces of the left and right guide plates is greater than or equal to the thickness of the magazine.
6. An auxiliary loading magazine well for AK series rifles according to any one of claims 1 to 4, characterized in that: The diameter of the cylindrical positioning surface (31b) on the magazine buckle fixing member (3) is less than or equal to the diameter of the magazine buckle shaft hole, and the length is greater than or equal to 25 mm.
7. An auxiliary loading magazine well for AK series rifles according to any one of claims 1 to 4, characterized in that: The inclined angle of the inner surfaces of the left and right guide plates on the magazine well body (1) is 15-25°.