A lever-type empty cartridge hangup release mechanism and method of operation thereof

Abstract

The application discloses a lever type empty cartridge hanging machine releasing mechanism and a working method thereof, which can conveniently complete empty cartridge hanging machine releasing, so as to improve the combat conversion efficiency. A cartridge supporting plate lining plate is fixed on a cartridge supporting plate, a middle lining iron is fixed on a machine case body, an empty cartridge hanging machine and an empty cartridge hanging machine spring are installed in the middle lining iron, an empty cartridge hanging machine releasing lever, an empty cartridge hanging machine releasing connecting rod and an empty cartridge hanging machine releasing pressing rod are installed on the machine case body, when there is no bullet in a bullet magazine, the empty cartridge hanging machine compresses the empty cartridge hanging machine spring, the empty cartridge hanging machine is located at an upper limit position, a bolt hanging machine surface on a bolt is forwardly oriented and contacts with an empty cartridge hanging machine surface on the empty cartridge hanging machine, so that the empty cartridge hanging machine action is completed, the empty cartridge hanging machine releasing pressing rod is pressed, the empty cartridge hanging machine releasing pressing rod drives the empty cartridge hanging machine releasing connecting rod to rotate, the empty cartridge hanging machine releasing connecting rod drives the empty cartridge hanging machine releasing lever to rotate, the empty cartridge hanging machine releasing lever presses down a releasing stress surface on the empty cartridge hanging machine, the empty cartridge hanging machine slides downwards and releases the bolt.

Description

Technical Field

[0001] This invention relates to the field of firearms technology, and in particular to a lever-type slide release mechanism and its working method. Background Technology

[0002] The domestically produced Type 56 assault rifle lacks a bolt hold-open mechanism. While the Type 81 and Type 95 rifle families include this feature, they lack a bolt hold-open release mechanism. Foreign AR-series rifles all incorporate a bolt hold-open release mechanism, and my country's latest Type 20 rifle family also features one. Adding a bolt hold-open release mechanism to rifles significantly improves combat readiness and facilitates rapid engagement in combat. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lever-type empty magazine release mechanism and its working method, which can conveniently complete the empty magazine release to improve combat conversion efficiency.

[0004] The objective of this invention is achieved as follows:

[0005] A lever-type slide stop mechanism includes a magazine body, a receiver body, a follower plate, and a bolt.

[0006] A follower plate liner is fixed on the follower plate. The upper rear end of the follower plate liner is the top surface. A middle liner is fixed on the receiver. An empty slide catcher and an empty slide catcher spring are installed inside the middle liner. The empty slide catcher and the middle liner slide vertically. The empty slide catcher spring applies a downward force to the empty slide catcher. The front end of the empty slide catcher has a downward-facing top surface corresponding to the top surface of the follower plate liner. The rear end of the empty slide catcher has an empty slide catcher surface. The rear end of the empty slide catcher also has an upward-facing release force-bearing surface. The rear end of the middle liner has a downward-facing limiting surface.

[0007] The receiver also features mutually perpendicular empty magazine release levers and empty magazine release linkages. The empty magazine release levers are laterally hinged to the receiver, and the front end of the empty magazine release linkage is fixedly connected to the empty magazine release lever. The empty magazine release lever has a forward-facing protrusion with an upper limiting surface and a lower working surface. The lower working surface of the protrusion corresponds to the release force surface on the empty magazine, and the upper limiting surface of the protrusion corresponds to the limiting surface on the intermediate lining. The limiting surface on the intermediate lining limits the upper limiting surface of the protrusion. At the upper limit position, the rear end of the empty magazine release linkage is provided with a drive groove along the longitudinal direction. The empty magazine release lever is hinged to the casing through a rotary shaft. The front end of the empty magazine release lever is provided with a drive cylindrical surface, and the rear end is provided with a pressing surface. The drive cylindrical surface on the empty magazine release lever cooperates with the drive groove on the empty magazine release linkage. The return spring is sleeved on the rotary shaft, and the spring foot of the return spring acts on the casing and the empty magazine release lever respectively. The pressing surface on the empty magazine release lever is used to complete the empty magazine release action.

[0008] The lower part of the front face of the bolt is the bolt hold-open surface. When there are no bullets in the magazine, the bolt hold-open spring is compressed and the bolt hold-open is in the upper limit position. The bolt hold-open surface on the bolt can move forward to contact the bolt hold-open surface on the bolt hold-open, thus completing the bolt hold-open action.

[0009] Pressing the pressing surface on the bolt release lever causes the bolt release lever to rotate, which in turn causes the bolt release linkage to rotate. This causes the bolt release lever to rotate, resulting in the lower working surface of the protrusion on the bolt release lever pressing down on the release force surface of the bolt. This compresses the return spring, causing the bolt to slide downwards and release the bolt.

[0010] Preferably, the left end of the empty compartment release lever is provided with a pressing release surface, and the right end of the empty compartment release lever passes through the casing laterally and is fixedly connected to the empty compartment release linkage on the right side of the casing. The pressing surface on the empty compartment release lever is used to complete the empty compartment release action with the right hand, and the pressing release surface of the empty compartment release lever is used to complete the empty compartment release action with the left hand.

[0011] Preferably, the right end of the empty compartment release lever is provided with a boss, and the empty compartment release link is engaged with the boss through the force-bearing surface to form circumferential positioning. The right end of the empty compartment release lever and the empty compartment release link are fixed by M3 screws.

[0012] A working method for a lever-type idler release mechanism.

[0013] During firing, the follower plate and follower plate liner inside the magazine move upward along the curved magazine under the action of the follower spring as the number of bullets in the magazine decreases. As the remaining bullets decrease, the top surface of the follower plate liner contacts the top surface of the follower plate on the empty bolt hold-open device. The empty bolt hold-open device moves upward under the guidance of the center liner and compresses the empty bolt hold-open spring until it is in place. At this time, there are no bullets in the magazine. During the last return of the bolt, the bolt hold-open surface on the bolt arm contacts the bolt hold-open surface on the empty bolt hold-open device, preventing the bolt from continuing to return forward. At this time, under the action of the return spring force, static friction is generated between the bolt arm and the empty bolt hold-open device, and they remain relatively stationary. At this time, the empty bolt hold-open action is completed.

[0014] When the bolt carrier is released, press the pressing surface on the bolt carrier release lever. The bolt carrier release lever rotates the bolt carrier release linkage, which in turn rotates the bolt carrier release lever. This causes the lower working surface of the protrusion on the bolt carrier release lever to press down on the release force surface on the bolt carrier, compressing the return spring. The bolt carrier slides downward and releases the bolt. Under the action of the recoil spring, the bolt returns to its original position. Afterward, release the pressing surface on the bolt carrier release lever. The return spring returns to its original position, causing the bolt carrier release lever to return to its original position.

[0015] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0016] Both sides are designed with press surfaces for releasing the bolt hold-open. When the right hand is holding the grip, the right hand can release the bolt hold-open with the index finger without leaving the grip, or the left hand can release the bolt hold-open. This allows the Type 81 rifle family to easily release the bolt hold-open after using this structure, thereby improving combat switching efficiency.

[0017] This method is applicable to the Type 81 rifle family and to bolt hold-open mechanisms of the same structural type. Bolt hold-open can be achieved using this structure. Attached Figure Description

[0018] Figure 1 This is a full sectional view of the present invention;

[0019] Figure 2 This is a top-view structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the spring support plate liner in this invention;

[0021] Figure 4 This is a schematic diagram of the improved lining iron component structure in this invention;

[0022] Figure 5 This is a schematic diagram of the structure of the empty bay hanger release lever part in this invention;

[0023] Figure 6 This is a schematic diagram of the structure of the empty cabin hanger release linkage component in this invention;

[0024] Figure 7 This is a schematic diagram of the improved rotary shaft component structure in this invention;

[0025] Figure 8 This is a schematic diagram of the structure of the return spring component in this invention;

[0026] Figure 9 This is a schematic diagram of the gun mechanism in this invention;

[0027] Figure 10 This is a schematic diagram of the empty bay hanger release lever structure in this invention;

[0028] Figure 11 This is a schematic diagram of the empty bay hanger spring structure in this invention;

[0029] Figure 12 This is a schematic diagram of the improved empty bay hanger structure in this invention;

[0030] Figure 13 This is a schematic diagram of the improved casing structure in this invention;

[0031] Figure 14 This is a three-dimensional schematic diagram of the present invention.

[0032] Figure Labels

[0033] In the attached diagram, 1 is the magazine body; 2 is the follower plate; 3 is the follower plate liner, 301 is the top surface; 4 is the center liner, 401 is the center liner limiting surface, 402 is the center liner left guide rail, 403 is the center liner right guide rail; 5 is the bolt hold-open lever, 501 is the upper limiting surface of its protrusion, 502 is the working surface of its protrusion, 503 is the press-release surface (pressing with the left hand releases the bolt hold-open); 6 is the bolt hold-open linkage, 601 is the drive groove on it, 602 is the cylindrical surface on it, 603 is the force-bearing surface on it; 7 is the rotating shaft; 8 is the return spring, 801 is the long spring leg of the return spring, 802 is the short spring leg of the return spring, 803 is the rotating hole; 9 is the bolt, 901 is the bolt hold-open surface; 10 is the empty magazine release lever; 1001 is the pressing surface (pressing with the index finger when holding the handle with the right hand releases the empty magazine); 1002 is the mounting surface of the return spring; 1003 is the drive cylindrical surface; 1004 is the rotary shaft hole; 11 is the empty magazine release spring; 12 is the improved empty magazine release mechanism, 1201 is the release surface; 1202 is the top surface of the ejector plate liner; 1203 is the empty magazine release spring mounting hole; 1204 is the release force surface; 1205 is the left guide rail; 1206 is the right guide rail; 13 is the receiver body, 1301 is the mounting hole for the short spring foot of the return spring; 1302 is the rotary shaft mounting hole (shared with the hammer shaft hole); 1303 is the mounting hole for the empty magazine release linkage; 1304 is the mounting hole for the empty magazine release lever. Detailed Implementation

[0034] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] See Figures 1-14 This invention is an embodiment of a lever-type empty magazine release mechanism. The invention includes a magazine body 1, a receiver body 13, a magazine catcher 2, and a magazine catcher liner 3. The magazine body 1 has a magazine catcher spring, a magazine bottom cover, and a magazine cover buckle. The magazine catcher 2 and the magazine catcher liner 3 are spot-welded together as a whole and installed inside the magazine body 1. They can reciprocate along the arc-shaped magazine under the action of the magazine catcher spring (below the magazine catcher 2, not shown).

[0036] The receiver has a guide rail that restricts the rotation of the bolt. A center liner 4 is riveted to the receiver body 13. The bolt catch 12 and bolt catch spring 11 are installed inside the center liner 4. The bolt catch 12 and the center liner 4 slide vertically together, and the bolt catch 12 can slide up and down on the guide rail of the center liner 4. The bolt catch spring 11 applies a downward force to the bolt catch 12. The receiver body 13 is also equipped with a bolt catch release lever 5, a bolt catch release linkage 6, and a rotation shaft 7. 6. Fixed connection (the empty compartment release lever 5 is provided with a boss, and the empty compartment release link 6 is engaged with the boss through the force-bearing surface 603), the empty compartment release lever 10 is sleeved on the rotary shaft 7, the driving cylindrical surface 1003 on the empty compartment release lever 10 cooperates with the driving slide groove 601 on the empty compartment release link 6, the return spring 8 is sleeved on the rotary shaft 7, and the short spring foot of the return spring 8 is installed on the casing, and the long spring foot acts on the empty compartment release lever 10, and the long spring foot causes the pressing surface 1001 of the empty compartment release lever 10 to rise.

[0037] Specific working principle:

[0038] During rifle firing, the follower plate 2 and follower plate liner 3 inside the magazine move upward along the curved magazine under the action of the follower spring as the number of bullets in the magazine decreases. As the remaining bullets decrease, the top surface 301 of the follower plate liner 3 contacts the top surface 1202 of the follower plate on the empty bolt hold-open device 12. The left guide rail 1205 and right guide rail 1206 on the empty bolt hold-open device 12 move upward under the constraint of the left guide rail 402 and right guide rail 403 of the middle lining iron 4, and compress the empty bolt hold-open spring 1. 1. Once the magazine is empty, the automatic mechanism (including the bolt, which is existing technology; other structures besides the bolt are not shown) has completed its final recoil. During the return to position, the bolt catch surface 901 on the bolt 9 contacts the bolt catch surface 1201 on the empty bolt catch 12, preventing the bolt from continuing to return to position. At this point, the automatic mechanism presses against the empty bolt catch under the force of the return spring and remains relatively stationary under the action of static friction, thus completing the empty bolt catch action.

[0039] When releasing the empty slot, if the right hand is holding the handle, it does not need to leave the handle. Simply extend the index finger to press the pressing surface 1001 on the empty slot release lever 10. This will cause it to rotate around the pivot 7. The driving cylindrical surface 1003 on the empty slot release lever 10 then acts on the driving groove 601 on the empty slot release connecting rod 6, forcing the empty slot release connecting rod 6 to rotate around the empty slot release connecting rod mounting hole on the casing 13. At this time, the force-bearing surface 603 on the empty slot release connecting rod 6 subsequently drives the empty slot release lever 5 to rotate, thus releasing the empty slot. As the rotation angle of lever 5 increases, the lower working surface 502 of the protrusion on the slide release lever 5 slowly contacts the release force surface 1204 on the slide release lever 12. With the downward pressure of the index finger, the upward spring force exerted on the slide release lever 10 by the long spring foot 801 of the return spring 8 must be overcome. As the downward stroke of the slide release lever 10 increases, relative sliding occurs between the bolt 9 and the slide release lever 12 from relative stillness. With the continued counterclockwise rotation of the slide release lever 10, the bolt is finally released, and the automatic mechanism returns to its position under the action of the recoil spring.

[0040] After the empty lever release action is completed, release the index finger, and the empty lever release lever will reset under the combined action of the two spring feet of the return spring 8. During the reset process, as the empty lever release lever 10 rotates clockwise, the force-bearing surface 603 on the empty lever release linkage 6 will drive the empty lever release lever to rotate. As the rotation angle of the lever increases, the limiting surface 501 on the protrusion on the empty lever release lever 5 slowly contacts the limiting surface 401 on the middle lining iron 4, limiting the limit position of the empty lever release lever 5. At this time, the empty lever release lever 5 has completed the reset, and the empty lever is in a free state, ready for the next re-engagement.

[0041] In addition, the above describes the mechanism operation when holding the handle with the right hand and using the right hand to release the empty magazine. This is convenient for personal habits. When it is inconvenient to use the right index finger to release the empty magazine, the left hand can be used to directly press the release surface 503 of the empty magazine release lever 5 on the left side of the receiver to complete the empty magazine release action.

[0042] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A lever-type slide stop mechanism, comprising a magazine body, a receiver, a follower plate, and a bolt, characterized in that: A follower plate liner is fixed on the follower plate. The upper rear end of the follower plate liner is the top surface. A middle liner is fixed on the receiver. An empty slide catcher and an empty slide catcher spring are installed inside the middle liner. The empty slide catcher and the middle liner slide vertically. The empty slide catcher spring applies a downward force to the empty slide catcher. The front end of the empty slide catcher has a downward-facing top surface corresponding to the top surface of the follower plate liner. The rear end of the empty slide catcher has an empty slide catcher surface. The rear end of the empty slide catcher also has an upward-facing release force-bearing surface. The rear end of the middle liner has a downward-facing limiting surface. The receiver also features mutually perpendicular empty magazine release levers and empty magazine release linkages. The empty magazine release levers are laterally hinged to the receiver, and the front end of the empty magazine release linkage is fixedly connected to the empty magazine release lever. The empty magazine release lever has a forward-facing protrusion with an upper limiting surface and a lower working surface. The lower working surface of the protrusion corresponds to the release force surface on the empty magazine, and the upper limiting surface of the protrusion corresponds to the limiting surface on the intermediate lining. The limiting surface on the intermediate lining limits the upper limiting surface of the protrusion. At the upper limit position, the rear end of the empty magazine release linkage is provided with a drive groove along the longitudinal direction. The empty magazine release lever is hinged to the casing through a rotary shaft. The front end of the empty magazine release lever is provided with a drive cylindrical surface, and the rear end is provided with a pressing surface. The drive cylindrical surface on the empty magazine release lever cooperates with the drive groove on the empty magazine release linkage. The return spring is sleeved on the rotary shaft, and the spring foot of the return spring acts on the casing and the empty magazine release lever respectively. The pressing surface on the empty magazine release lever is used to complete the empty magazine release action. The lower part of the front face of the bolt is the bolt hold-open surface. When there are no bullets in the magazine, the bolt hold-open spring is compressed and the bolt hold-open is in the upper limit position. The bolt hold-open surface on the bolt can move forward to contact the bolt hold-open surface on the bolt hold-open, thus completing the bolt hold-open action. Pressing the pressing surface on the bolt release lever causes the bolt release lever to rotate, which in turn causes the bolt release linkage to rotate. This causes the bolt release lever to rotate, resulting in the lower working surface of the protrusion on the bolt release lever pressing down on the release force surface of the bolt. This compresses the return spring, causing the bolt to slide downwards and release the bolt.

2. The lever-type empty bay release mechanism according to claim 1, characterized in that: The left end of the empty magazine release lever has a pressing release surface, and the right end of the empty magazine release lever passes through the casing laterally and is fixedly connected to the empty magazine release linkage on the right side of the casing. The pressing surface on the empty magazine release lever is used to complete the empty magazine release action with the right hand, and the pressing release surface of the empty magazine release lever is used to complete the empty magazine release action with the left hand.

3. A lever-type empty bay release mechanism according to claim 1 or 2, characterized in that: The right end of the empty compartment release lever is provided with a boss. The empty compartment release linkage is engaged with the boss through the force-bearing surface to form circumferential positioning. The right end of the empty compartment release lever is fixed to the empty compartment release linkage with screws.

4. A method for operating the lever-type empty bay release mechanism as described in claim 1, characterized in that: During firing, the follower plate and follower plate liner inside the magazine move upward along the curved magazine under the action of the follower spring as the number of bullets in the magazine decreases. As the remaining bullets decrease, the top surface of the follower plate liner contacts the top surface of the follower plate on the empty bolt hold-open device. The empty bolt hold-open device moves upward under the guidance of the center liner and compresses the empty bolt hold-open spring until it is in place. At this time, there are no bullets in the magazine. During the last return of the bolt, the bolt hold-open surface on the bolt arm contacts the bolt hold-open surface on the empty bolt hold-open device, preventing the bolt from continuing to return forward. At this time, under the action of the return spring force, static friction is generated between the bolt arm and the empty bolt hold-open device, and they remain relatively stationary. At this time, the empty bolt hold-open action is completed. When the bolt carrier is released, press the pressing surface on the bolt carrier release lever. The bolt carrier release lever drives the bolt carrier release linkage to rotate, which in turn drives the bolt carrier release lever to rotate. This causes the lower working surface of the protrusion on the bolt carrier release lever to press down on the release force surface on the bolt carrier, compressing the return spring. The bolt carrier slides downward and releases the bolt. Under the action of the recoil spring, the bolt returns to its original position. Afterwards, release the pressing surface on the empty compartment release lever, the return spring will reset, and the empty compartment release lever will reset.

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