A primer charging drag structure for a weapon

Abstract

This invention discloses a first-round loading pull block structure for weapons, which is simple in structure, highly reliable, and safe. It includes a pull block base with a front stop at the front end and a step at the rear end. The step contains a rear stop and a rotating block. It also includes a rotating block connecting rod, a rotating block, a return spring rod, and a return spring. A through hole is provided on the vertical surface of the pull block base step, and a blind hole is provided on the horizontal surface of the pull block base step. Through holes are provided at both ends of the rear stop and the rotating block. The rotating block connecting rod passes through the through hole at one end of the rotating block, the through hole at one end of the rear stop, and the through hole of the pull block base, and is fixedly connected to the rotating block. The return spring rod passes through the through hole at the other end of the rotating block and the through hole at the other end of the rear stop, and is fixedly connected to the rear stop. The return spring is sleeved on the return spring rod. A positioning spring and a steel ball are provided in the blind hole of the pull block base. Two positioning grooves are provided on the outer circumference of the rotating block connecting rod corresponding to the steel ball.

Description

Technical Field

[0001] This invention relates to the field of weapon equipment technology, and in particular to a first-round loading pull block structure for weapons. Background Technology

[0002] To achieve intelligent first-round loading of weapons, a motor-driven lever base is used to move the weapon's charging handle assembly for the first round of loading. For some types of weapons, the charging handle assembly must be reset before the first shot, otherwise it will cause firing malfunctions. To avoid malfunctions, a structure is typically designed to reset the charging handle assembly for such weapons.

[0003] Traditionally, the charging handle assembly is reset directly by the lever seat. During weapon firing, the charging handle assembly recoils along with the weapon. To prevent the charging handle from colliding with the rear end of the lever seat during firing, the lever seat needs to move a certain distance in the opposite direction after the charging handle assembly has returned to its original position. There are many ways to drive the lever, such as the drive structure in the patent application number 200720188511.6.

[0004] This type of structure can achieve its function and is relatively simple in structure. It is widely used in the first-round loading of weapons, but it has certain drawbacks, mainly three points.

[0005] 1. Increase the length of the first-round loading component. To prevent the charging handle from colliding with the rear end of the charging block during firing, the length of the first-round loading component needs to be increased to ensure sufficient clearance between the charging block and the weapon's charging handle.

[0006] 2. Reduced system reliability. After the weapon charging handle returns to its original position, it needs to drive the charging block to move in the opposite direction. The distance of this reverse movement cannot be controlled by the position sensor, resulting in uncertainty.

[0007] 3. Difficult to troubleshoot. If a malfunction occurs during the initial loading of the weapon, the weapon's charging handle may not be effectively in the safe position during troubleshooting, posing a safety hazard. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a first-round loading pull block structure for weapons, which has the characteristics of simple structure, high reliability, strong versatility and good safety.

[0009] The objective of this invention is achieved as follows:

[0010] A first-round loading lever structure for a weapon includes a lever seat, a front stop block at the front end of the lever seat, and a step at the rear end of the lever seat. A rear stop block and a rotating block are sequentially arranged within the step. The structure also includes a rotating block connecting rod, a rotating block, a return spring rod, and a return spring. A through hole is provided on the vertical surface of the step of the lever seat, and a blind hole is provided on the horizontal surface of the step. Through holes are provided at both ends of the rear stop block and the rotating block. The rotating block connecting rod passes through the through hole at one end of the rotating block, the through hole at one end of the rear stop block, and the through hole in the lever seat. The rotating block connecting rod and the rotating block are fixed... The rotating block connecting rod is fixedly connected and can rotate within the through hole of the pull block seat. The rotating block connecting rod can slide axially within the through hole at one end of the rear stop block. The return spring rod passes through the through holes at the other end of the rotating block and the other end of the rear stop block. The return spring rod and the rear stop block are fixedly connected. The return spring rod can slide axially within the through hole at the other end of the rotating block. The return spring is sleeved on the return spring rod. A positioning spring and a steel ball are sequentially arranged in the blind hole of the pull block seat. Two positioning grooves are provided on the outer circular surface of the rotating block connecting rod corresponding to the steel ball. The two positioning grooves correspond to the working state and the non-working state.

[0011] In the working state, the rear stop block and the rotating block are upright, the rear stop block and the front stop block are opposite each other, and the rear stop block and the front stop block are engaged with the weapon charging handle, which can drive the weapon charging handle.

[0012] In the non-working state, the rear stop and rotating block tilt, the rear stop and front stop are misaligned, the rear stop does not work, the limit on the weapon charging handle is released, and the weapon charging handle cannot be driven.

[0013] Preferably, the spring force of the return spring is greater than the return resistance of the weapon charging handle.

[0014] Preferably, one side of the rotating block is a rotating arc surface, which allows the rotating block to rotate and tilt to that side, while the other side of the rotating block is a straight surface that mates with the plane of the pull block seat step, thus restricting the rotating block from rotating to the other side.

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

[0016] This invention can effectively avoid the problems of traditional weapon first-round loading pull block structures, and has the characteristics of simple structure, high reliability, and good safety. Attached Figure Description

[0017] Figure 1 It is a traditional weapon first-round loading pull block structure;

[0018] Figure 2The following is a schematic diagram of the working state of the present invention: 1-Pull block seat, 2-Positioning spring, 3-Steel ball, 4-Rotating block connecting rod, 5-Rotating block, 6-Reset spring, 7-Reset spring rod, 8-Rear stop block, 9-Rear stop block front end face, 10-Pull machine handle assembly rear end face, 11-Pull machine handle assembly front end face, 12-Front stop block, 101-First mortise position, 201-Second mortise position, 301-Rotating block working surface;

[0019] Figure 3 This is a cross-sectional view of the present invention in operation.

[0020] Figure 4 This is a schematic diagram of the non-working state of the present invention. At this time, the rotating block connecting rod, rotating block, return spring, return spring rod and rear stop block rotate together by 90 degrees, releasing the restriction on the weapon charging handle and preventing the weapon charging handle from returning to the working position.

[0021] Figure 5 This is a schematic diagram of the pull handle assembly, 13-pull handle assembly. Detailed Implementation

[0022] See Figures 2-4 A first-round loading pull block structure for a weapon, wherein the weapon in this embodiment is a machine gun, includes a pull block seat, a positioning spring, a steel ball, a rotating block connecting rod, a rotating block, a return spring, a return spring rod, and a rear stop block. The pull block seat is the main body part, which is the installation space for other parts. In addition to having a through hole, the main body part also has a blind hole. The through hole of the main body part is for the rotating block connecting rod to pass through, and the blind hole is for installing the positioning spring.

[0023] The rotating block connecting rod is fixedly connected to the rotating block, and the rotating block connecting rod is positioned by a steel ball under the spring force of the positioning spring; the rotating block also has a through hole for the return spring rod to pass through; the return spring rod restricts the movement of the return spring and is also fixedly connected to the rear stop block; the rear stop block slides axially on the rotating block connecting rod.

[0024] In the working state, the front end face 11 of the charging handle assembly is pushed by the rear end face of the front stop 12 to perform the weapon unlocking action. After the unlocking is in place, as the charging block 1 returns to the initial position, the front end face 9 of the rear stop is driven by the spring force to return to the initial position along with the charging block 1 and the rear end face 10 of the charging handle assembly.

[0025] In the non-working state, the rotating block connecting rod, rotating block, return spring, return spring rod, and rear stop block rotate together by 90 degrees, releasing the restriction on the weapon charging handle assembly.

[0026] Specifically:

[0027] A through hole and a blind hole are machined on the pull block seat 1. The blind hole is used to install the positioning spring 2 and the steel ball 3. The rotating block connecting rod 4 can rotate freely on the through hole.

[0028] Two through holes are machined on the rotating block 5. One through hole allows the reset spring rod 7 to slide freely, and the other through hole is connected to the rotating block connecting rod 4. The first mortise position 101 between the rotating block connecting rod 4 and the rotating block 5 is riveted to ensure that there is no looseness between the rotating block connecting rod 4 and the rotating block 5.

[0029] Two through holes are machined on the rear stop block 8. One through hole allows the rotating block connecting rod 4 to slide freely, and the other through hole is connected to the reset spring rod 7. The second mortise position 201 is riveted to ensure that there is no looseness between the reset spring rod 7 and the rear stop block 8.

[0030] Positioning spring 2 and return spring 6 are made of spring steel wire, and can be made of single-strand spring or multi-strand spring. The spring force of return spring 6 must be greater than the return resistance of the weapon's charging handle.

[0031] The principle of this invention is as follows: When the weapon is fired, the rear stop 8 can move axially along the return spring rod 7 during the recoil of the weapon charging handle assembly 13, which effectively prevents hard collision between the weapon charging handle assembly 13 and the rear stop 8, thus preventing damage to the weapon charging handle assembly or weapon firing malfunction.

[0032] During the reset process of the weapon charging handle assembly, the push of the back stop 8 under the spring force of the reset spring 6 can ensure that the charging handle assembly is reliably reset.

[0033] The rotating block connecting rod 4, rotating block 5, return spring 6, return spring rod 7, and rear stop block 8 rotate together 90 degrees to reach a non-working state. The rotating block connecting rod has two positioning grooves for positioning it in two different positions. This facilitates weapon installation and removal, and also allows for reliable troubleshooting. Reliable positioning in both working and non-working states is achieved under the force of the positioning spring 2 and the steel ball 3. The rotating block has a positioning surface that restricts its rotation direction. The rotating block uses a combination of straight and curved surfaces to prevent incorrect rotation and ensure smooth and reliable rotation.

[0034] 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 first-round loading pull block structure for a weapon, comprising a pull block seat, a front stop block at the front end of the pull block seat, and a step at the rear end of the pull block seat, characterized in that: The step is provided with a rear stop block and a rotating block in sequence, and also includes a rotating block connecting rod, a return spring rod, and a return spring. A through hole is provided on the vertical surface of the pull block seat step, and a blind hole is provided on the horizontal surface of the pull block seat step. The rear stop block and the rotating block are provided with through holes at both ends. The rotating block connecting rod passes through the through hole at one end of the rotating block, the through hole at one end of the rear stop block, and the through hole of the pull block seat. The rotating block connecting rod and the rotating block are fixedly connected. The rotating block connecting rod can rotate in the through hole of the pull block seat and slide axially in the through hole at one end of the rear stop block. The return spring rod passes through the through hole at the other end of the rotating block and the through hole at the other end of the rear stop block. The return spring rod and the rear stop block are fixedly connected. The return spring rod can slide axially in the through hole at the other end of the rotating block. The return spring is sleeved on the return spring rod. A positioning spring and a steel ball are provided in sequence in the blind hole of the pull block seat. Two positioning grooves are provided on the outer circular surface of the rotating block connecting rod corresponding to the steel ball. The two positioning grooves correspond to the working state and the non-working state. In the working state, the rear stop block and the rotating block are upright, the rear stop block and the front stop block are opposite each other, and the rear stop block and the front stop block are engaged with the weapon charging handle, which can drive the weapon charging handle. In the non-working state, the rear stop and rotating block tilt, the rear stop and front stop are misaligned, the rear stop does not work, the limit on the weapon charging handle is released, and the weapon charging handle cannot be driven.

2. The first-round loading pull block structure for a weapon according to claim 1, characterized in that: The spring force of the return spring is greater than the return resistance of the weapon's trigger handle.

3. A primer-seating drag structure for a weapon as defined in claim 1, wherein: One side of the rotating block is a rotating arc surface, which allows the rotating block to rotate and tilt to that side. The other side of the rotating block is a straight surface, which mates with the plane of the pull block seat step, restricting the rotating block from rotating to the other side.

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