Three-feeding type three-row magazine and bullet feeding device thereof

Abstract

The utility model relates to firearm equipment, which adopts a'three-row three-entry 'bullet entering mode, a left side plate and a right side plate of a magazine body are kept to be straight walls from bottom to top, three rows of bullets in the magazine body are kept to be arranged in three rows from bottom to top, three top-layer bullets of the three rows of bullets can be respectively buckled by three bullet buckling teeth, and three bullet entering positions are formed at the opening part of the magazine body; according to the bullet feeding device of the three-feeding type three-row magazine, the two bullet pushing bamboo shoots are arranged, bullets located at three bullet feeding positions of the three-feeding type three-row magazine can be sequentially pushed into the chamber, the bullets are always kept in the states of positive stress, small resistance, definite track and stable movement in the whole moving process, the bullet clamping faults of the three-row magazine can be reduced, the reliability is improved, and the bullet feeding device is suitable for being used for bullet feeding of the three-feeding type three-row magazine. Therefore, the practicability of the three-row magazine is promoted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a firearm, in particular to a three-inlet three-row magazine and a three-inlet three-row magazine feeding device used in conjunction. BACKGROUND

[0002] Modern rifles mostly use two-row magazines, in order to further enhance firepower, some people have designed three-row, four-row and other large-capacity magazines, among the above three kinds of magazines, the two-row magazine is light, but the bullet capacity is small and the firepower is weak, the four-row magazine has large bullet capacity and fierce firepower, but is too heavy and has poor mobility, and the three-row magazine between the two is larger than the two-row magazine in bullet capacity, and smaller than the four-row magazine in size and weight, so the firepower is relatively large and not too heavy, and the firearm firepower and mobility are well balanced, and it is a relatively moderate choice, but the existing three-row magazine uses a three-row two-inlet feeding mode, which causes a high failure rate, specifically, the left and right two originally vertical side plates of the magazine body are bent inward into a horn-shaped folding section at the top of the magazine, and the three rows of bullets are folded into two rows, which increases the moving resistance of the bullets, changes the correct stress direction, moving direction and trajectory of the bullets, and easily causes bullet jamming failure, so the three-row magazine is rarely used, and only the three-row magazine (patent number US4428137) of the United States and the three-row magazine with a double-tube bullet plate and double-tube spring structure of Russia have had some short-term applications, and through extensive retrieval, no same technical scheme as the utility model has been found. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims to reduce the bullet jamming failure of the three-row magazine and improve the reliability of the three-row magazine, and provides a three-inlet three-row magazine and a three-inlet three-row magazine feeding device.

[0004] The utility model adopts the technical scheme that

[0005] A three-inlet three-row magazine mainly comprises a magazine body filled with three rows of bullets, and a bullet supporting plate and a bullet supporting spring are arranged in the magazine body,

[0006] A longitudinal protrusion or groove with a size of half a bullet is arranged in the middle of the bullet supporting plate, so that the middle row of bullets is arranged in a staggered manner with the left and right rows of bullets, and the two sides of the bullet supporting plate are respectively matched with the side walls of the magazine body to keep stable;

[0007] A left bullet clamping tooth and a right bullet clamping tooth are respectively arranged on the upper edges of the left side plate and the right side plate of the magazine body, and the position of the right bullet clamping tooth is higher than that of the left bullet clamping tooth, an elastic anti-jumping sheet is arranged on the inner wall of the magazine body below the right bullet clamping tooth, the lower edge of the anti-jumping sheet is connected to the inner wall of the magazine body, the upper edge is in a free state and is an inwardly inclined arc, and the right row of top bullets can be temporarily pressed;

[0008] The middle row bullet is provided with a middle bullet latch at the middle position of the left bullet latch and the right bullet latch, one end of the middle bullet latch is fixedly connected to the cartridge body at the tail of the bullet and the other end is cantilevered forward, used for latching the middle row top bullet, and the latched position of the middle row bullet is the same as the latched position of the left row top bullet.

[0009] Further, a bullet pressing wing is arranged at the bottom side of the middle bullet latch, the wing root is connected to the bottom side of the middle bullet latch, the wing tip is in a free state and extends forward and downward, and the wing tip can press the middle row top bullet which is not latched and is located below the middle bullet latch.

[0010] The utility model further provides an ammunition feeding device for the three-row three-row ammunition cartridge, mainly includes a bolt and a barrel sleeve, the left push bullet and the right push bullet are provided with the protruding left push bullet and the right push bullet respectively along the left lower side and the right lower side of the front end of the bolt, the rest parts of the front end of the bolt are provided with a plurality of outward protruding locking studs, the left push bullet and the right push bullet are all set into pentagons, and the left push bullet and the right push bullet are set into pentagons, and the left push bullet and the right push bullet are set into pentagons. bottom When the middle row top bullet is latched, the inside of the left push bullet and the inside of the right push bullet can abut against the bottom of the middle row top bullet.

[0011] Further, a bullet pressing wing is arranged at the bottom side of the middle bullet latch, the wing root is connected to the bottom side of the middle bullet latch, the wing tip is in a free state and extends forward and downward, and the wing tip can press the middle row top bullet which is not latched and is located below the middle bullet latch.

[0012] The utility model has the advantages of:

[0013] The three-row three-row ammunition cartridge adopts the "three-row three-row" ammunition feeding mode, so that the bullet always keeps a state of correct force, small resistance, determined trajectory and stable movement during upward movement, which is beneficial to reducing the bullet jamming failure of the three-row ammunition cartridge and improving the reliability, thereby promoting the practicality of the three-row ammunition cartridge.

[0014] The utility model will be further described in connection with the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of a three-row three-row ammunition cartridge of the utility model;

[0016] Figure 2 It is a left view of Figure 1 ; and

[0017] Figure 3 is a top view of Figure 1 ;

[0018] Figure 4 is a section view of A--A of Figure 1 ;

[0019] Figure 5 is a front view of the feeding device, in which the left top row of cartridges is shown just before being pushed by the left pusher;

[0020] Figure 6 is a left view of Figure 5 ;

[0021] Figure 7 is a perspective view of Figure 5 ;

[0022] Figure 8 is a perspective view of the left top row of cartridges being pushed by the left pusher;

[0023] Figure 9 is a section view of the right top row of cartridges being pushed by the right pusher;

[0024] Figure 10 is a perspective view of the right top row of cartridges being pushed by the right pusher, as shown in Figure 9 ;

[0025] Figure 11 is a section view of the middle top row of cartridges being pushed by both the left and right pushers;

[0026] Figure 12 is a perspective view of the middle top row of cartridges being pushed by both the left and right pushers, as shown in Figure 11 ;

[0027] Figure 13 is a section view of the feeding device combined with the firearm;

[0028] Figure 14 is a perspective view of Figure 13 ;

[0029] Figure 15 is a perspective view of the bolt just before it passes through the barrel jacket;

[0030] Figure 16 is a perspective view of the bolt just after it passes through the barrel jacket;

[0031] Figure 17 is a perspective view of the bolt and barrel jacket forming a locked state;

[0032] Figure 18 is a perspective view of the barrel jacket tail end with a cartridge guiding slope;

[0033] Figure 19 is a schematic diagram of a three-row magazine in the United States;

[0034] Figure 20 is a schematic diagram of a three-row magazine in Russia. DETAILED DESCRIPTION

[0035] Example 1: a three-row magazine (see Figure 1 , Figure 2 , Figure 3 ), mainly comprising a magazine body 1, a cartridge holder 2 and a cartridge spring 3, the magazine body is provided with staggered left, middle and right rows of cartridges, the cartridge holder is tightly attached to the left and right side plates of the magazine body, and the middle part of the cartridge holder is provided with a longitudinal protrusion or groove with the size of half a cartridge, so that the middle row of cartridges is staggered with the left and right rows of cartridges.

[0036] The three cartridges on the top layer of the three rows of cartridges are respectively referred to as the left row top cartridge, the middle row top cartridge and the right row top cartridge (labeled as 101, 103 and 102 respectively in Figure 1 ), the cartridge spring and the cartridge holder push the cartridges in the magazine body upwards, the magazine body is surrounded by front, rear, left and right side plates (the orientation is the same as the direction of the cartridges, the same below), the left and right side plates are straight walls from bottom to top, and the left, middle and right rows of cartridges are arranged in three rows from bottom to top, the left and right side plates of the magazine body are provided with a left cartridge tooth 4 and a right cartridge tooth 5 respectively on the upper edges of the left and right side plates, which are used to hold the left and right row top cartridges respectively, and the position of the right cartridge tooth is higher than that of the left cartridge tooth, so that the position of the right row top cartridge held is higher than that of the left row top cartridge, and the height difference is not less than the cartridge push height (i.e. the contact height when the cartridge is contacted by the cartridge feeding device), an elastic anti-jumping piece 6 is arranged on the inner wall of the right side plate below the right cartridge tooth, the lower edge of the anti-jumping piece is connected to the inner wall of the right side plate, the upper edge is in a free state and inclined inward, which can press the right row top cartridge that has not been held and is stopped below the right cartridge tooth to prevent the cartridge from jumping, and when the cartridge is pushed upwards, the anti-jumping piece can be opened outward to continue to move upwards, a middle cartridge tooth 7 parallel to the cartridges is arranged in the middle of the left and right cartridge teeth, the root of the middle cartridge tooth is fixed to the rear side plate of the magazine body and the head of the middle cartridge tooth protrudes forward, which is used to hold the middle row top cartridge, and the position of the cartridge held is the same as that of the left row top cartridge, an elastic cartridge pressing fin 8 (see Figure 4 ) is arranged on the bottom side of the middle cartridge tooth, the fin root is connected to the bottom side of the middle cartridge tooth, the fin tip is in a free state and protrudes forward and obliquely downward, which can press the middle row top cartridge that has not been held and is stopped below the middle cartridge tooth to prevent the cartridge from jumping, and when the cartridge is pushed upwards, the cartridge pressing fin can be bent upwards to continue to move upwards.

[0037] Embodiment 2, a feeding device of a three-row three-column magazine, mainly comprising the aforementioned three-row three-column magazine, a bolt 9 and a barrel sleeve 10, the three-row three-column magazine is inserted into a magazine box 11, the rear end of the bolt is inserted into a bolt frame 12 for forward and backward sliding and left and right rotating cooperation, the bolt frame is installed in the magazine box for forward and backward sliding and drives the bolt to reciprocate above the three-row three-column magazine (see Figure 13 、 Figure 14 ), and makes the bottom side of the bolt frame and the bottom side of the bolt not contact the left, middle and right locking teeth 4, 7 and 5 on the magazine body, along the periphery of the front end of the bolt, left and right push teeth 13 and 14 are respectively arranged on the left lower side and the right lower side of the front end of the bolt, and the rest of the periphery of the front end of the bolt is provided with a plurality of outward protruding locking teeth 15 (see Figure 5 、 Figure 6 、 Figure 7 ), the left and right push teeth are required to meet the following requirements: the left and right push teeth are used as locking teeth; a space is left between the left and right push teeth to accommodate the middle locking tooth; the left push tooth can pass between the left locking tooth and the middle locking tooth, and the right push tooth can pass between the middle locking tooth and the right locking tooth; the size of the right push tooth is smaller than that of the left push tooth, when the left top layer of bullets is locked, the left push tooth can contact the bottom of the left top layer of bullets, and the right push tooth cannot contact the right top layer of bullets, and when the right top layer of bullets is locked, the right push tooth can contact the bottom of the right top layer of bullets; when the middle top layer of bullets is locked, the inside of the left push tooth and the inside of the right push tooth can contact the bottom of the middle top layer of bullets; and the contact surface between each push tooth and the bottom of the bullet is required to be large enough and cannot scratch the bullet. In order to meet the above requirements, the left and right push teeth are both set to pentagons (different from the quadrilaterals of conventional locking teeth). The barrel sleeve is sleeved on the tail of the barrel 16, a plurality of locking grooves 10a are formed on the inner wall of the rear end of the barrel sleeve (see Figure 13 、 Figure 14 、 Figure 15 ), and the shapes of the two locking grooves on the left lower side and the right lower side are respectively adapted to the shapes of the left and right push teeth, the locking teeth and the locking grooves cooperate to complete the locking of the barrel tail; the protruding parts between each locking groove are made into slopes to form bullet guiding slopes 10b (see Figure 13 、 Figure 18 ), to induce the bullet head to gradually deviate and approach the cartridge chamber until entering the cartridge chamber.

[0038] The working principle and beneficial effects of the three-row three-column magazine and the feeding device of the three-row three-column magazine will be further described below in combination with the feeding process and the drawings.

[0039] As Figure 5 、 Figure 6 、 Figure 7 ,Figure 8 As shown: under the push of the cartridge holder spring and the cartridge holder plate, the bullets in the cartridge holder body move upward, when the left top layer bullet (101) moves upward and touches the left locking tooth, the left locking tooth locks the upward movement of the bullets in the cartridge holder body, with the forward movement of the bolt, the left push bullet spring with larger size can push the bottom of the left top layer bullet, while the right top layer bullet (102) stops at the same height as the left top layer bullet and has not been locked, the right top side is pressed by the upper edge of the elastic anti-jumping piece 6 to prevent the bullet from jumping, because the bullet has not reached the highest position when it is locked, the right push bullet spring with smaller size cannot touch the bullet; as for the middle top layer bullet (103) at this time, it stops below the left and right top layer bullets, and both push bullet springs cannot touch the bullet. With the left top layer bullet being pushed out, the cartridge holder spring is stretched to push the bullets in the cartridge holder body to continue to move upward, and the right top layer bullet continues to move upward by stretching the anti-jumping piece.

[0040] As shown: Figure 9 , Figure 10 As shown: when the right top layer bullet moves upward and touches the right locking tooth, the right push bullet spring can push the bottom of the bullet, while the middle top layer bullet is still pressed below, so both push bullet springs cannot touch the bullet, and the bullet is pressed by the wing tip of the elastic bullet pressing wing 8 to prevent the bullet from jumping. With the right top layer bullet being pushed out, the bullets in the cartridge holder body continue to move upward, and the middle top layer bullet continues to move upward by bending the elastic bullet pressing wing.

[0041] As shown: Figure 11 , Figure 12 As shown: when the middle top layer bullet moves upward and touches the middle locking tooth, the inside of the left push bullet spring and the inside of the right push bullet spring can both push the bottom of the bullet, at this time, the new left top layer bullet (104) and the new right top layer bullet (105) are both pressed below and cannot touch the corresponding push bullet spring, with the middle top layer bullet being pushed out, the bullets in the cartridge holder body continue to move upward until the new left top layer bullet touches the left locking tooth and is locked, and the above process is repeated.

[0042] The chamber locking process is: when the bolt carrier moves forward and drives the bolt to push the bullet, the locking protrusion on the bolt, the left push bullet spring and the right push bullet spring are respectively aligned with the corresponding locking grooves on the tail end of the barrel sleeve (see Figure 15 , the bullet is not drawn) ; with the continuous forward movement of the bolt, the locking protrusion, the left push bullet spring and the right push bullet spring pass through the corresponding locking grooves, the bullet is pushed into the chamber, the bolt stops moving, but the bolt carrier continues to move forward (see Figure 16When the bolt carrier moves forward, the rear slope of the shaping groove 12a on it presses against the shaping lug 9a on the bolt, causing it to move laterally and rotate. This rotates the bolt by a certain angle, aligning the rear ends of the locking lugs and each push lug with the front ends of the protrusions between the locking slots. The bolt carrier stops moving, the bolt stops rotating, and the locking lugs and each push lug are blocked by the protrusions between the locking slots, preventing the bolt from retracting and thus locking the chamber (see...). Figure 17 ).

[0043] Compared to existing three-row magazines, the three-stage magazine offers significant advantages. Existing three-row magazines are relatively few in number; while each has its own characteristics, they all share a common feature: they employ a "three-row, two-stage" feeding method. A typical example is the American three-row magazine (patent number US4428137, see [link]). Figure 19 Above the magazine, the two originally upright side plates of the magazine body are bent inward into a ramp, forming a funnel-shaped converging section 17. When the three rows of bullets below move up to this section, the bullets on both sides are gradually squeezed and misaligned by the ramps on both sides, and converge into two rows of two-row feed ports that reach the top of the magazine and wait to be pushed. This "three-to-two" method brings several disadvantages: First, the ramp of the retracting section significantly increases the resistance to the bullet, hindering its upward movement; second, it alters the ideal state of the bullet being vertically stressed and moving upward, resulting in minimal resistance and a definite trajectory, causing the bullet's force to become biased and its trajectory to become oblique, further increasing the bullet's movement resistance and trajectory uncertainty, easily leading to the bullet jamming, seizing, or becoming suspended; third, in order for the follower to move all the way to the top of the magazine to feed all the bullets into the inlet, the width of the follower cannot exceed the width of the narrowed upper part of the magazine, causing the left and right sides of the follower to be unable to affix to the upright left and right side plates of the magazine body, easily resulting in tilting and instability. All of these factors can easily cause jamming. In addition, the shape of the retracting section is asymmetrical, resulting in an irregular magazine shape and an off-center center of gravity. There is also a Russian three-row magazine with a "double follower, double springs, and a central partition" structure (see...). Figure 20 This magazine, also employing a "three-row, two-feed" feeding method, suffers from the aforementioned major drawbacks, further complicating its structure and increasing its size and weight. Due to the excessively high failure rate of existing three-row magazines, this more moderately sized magazine is rarely used, and has even been phased out of practical application.

[0044] The three-row three-feeding bullet magazine adopts a "three rows three feedings" feeding mode, the left and right side plates of the bullet magazine body are kept as straight walls from bottom to top without setting up slope type folding sections, three rows of bullets in the bullet magazine body are kept as three rows from bottom to top without folding into two rows, three bullets of the three-row bullets can be respectively held by three bullet holding teeth, three bullet feeding parts are formed, the beneficial effects of the setting are that: firstly, the three-row bullets are kept as vertical force and vertical upward movement from bottom to top; secondly, the width of the bullet holding plate is consistent with the interval of the left and right side plates of the bullet magazine body, the left and right sides of the bullet holding plate can respectively tightly adhere to the left and right side plates of the bullet magazine body, and the stability is good. These factors make the bullets keep a state of correct force, small resistance, determined trajectory and stable movement in the upward movement process, are favorable for reducing the bullet jamming failure of the three-row bullet magazine, improving the reliability, and thus promoting the practicality of the three-row bullet magazine.

Claims

1. A three-row, three-feed magazine, comprising a magazine body (1) for loading three rows of ammunition, wherein a follower plate (2) and a follower spring (3) are provided inside the magazine body, characterized in that: The follower plate (2) has a longitudinal protrusion or groove in the middle so that the central bullet and the left and right bullets are staggered. The two sides of the follower plate are respectively engaged with the side wall of the magazine body to maintain stability. On the left and right sides of the magazine body, there are left latching teeth (4) and right latching teeth (5) respectively. The right latching teeth are higher than the left latching teeth. On the inner wall of the magazine body below the right latching teeth, there is an elastic anti-slip plate (6). The lower side of the anti-slip plate is connected to the inner wall of the magazine body, and the upper side is in a free state and is an inwardly inclined arc shape, which can temporarily suppress the right-side top layer bullet. A center-locking tooth (7) is provided in the middle of the left and right locking teeth to cooperate with the central bullet. One end of the center-locking tooth is fixed to the magazine body at the tail of the bullet and the other end extends forward to lock the central top-level bullet, and the position where the central bullet is locked is at the same height as the position where the left top-level bullet is locked.

2. The three-stage, three-row magazine according to claim 1, characterized in that: An elastic pressing wing (8) is provided on the bottom side of the middle-locking bullet tooth. Its wing root is connected to the bottom side of the middle-locking bullet tooth, and its wing tip is in a free state and extends forward and diagonally downward, which can press down the middle-level bullet that is stopped below the middle-locking bullet tooth and has not yet been locked.

3. A feeding device for a three-stage, three-row magazine as described in claim 1 or 2, comprising a bolt (9) and a barrel extension (10), characterized in that: Along the lower left and lower right sides of the front end of the bolt, there are protruding left push lugs (13) and right push lugs (14), respectively. The remaining parts of the front end of the bolt have several outwardly protruding locking lugs (15). Both the left and right push lugs are pentagonal in shape, with a gap between them to accommodate the center locking teeth. This allows the left push lug to pass between the left and center locking teeth, and the right push lug to pass between the center and right locking teeth. The right pusher (14) is smaller than the left pusher (13). When the top-level bullet of the left row is locked, the left pusher touches the bottom of the top-level bullet of the left row, while the right pusher cannot touch the top-level bullet of the right row. When the top-level bullet of the right row is locked by the right locking tooth, the right pusher touches the bottom of the top-level bullet of the right row. When the top-level bullet of the middle row is locked, the inner side of the left pusher and the inner side of the right pusher can both touch the bottom of the top-level bullet of the middle row.

4. The feeding device for a three-stage, three-row magazine according to claim 3, characterized in that, Several locking slots (10a) are made on the inner wall of the rear end of the barrel extension, and the shapes of the two locking slots located on the lower left and lower right sides are adapted to the left push lug and the right push lug, respectively.

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