Firearm locking linkage mechanism and firearm using same

Abstract

A firearm locking linkage mechanism and a firearm using the same relate to the technical field of firearm internal parts, the firearm comprises a gun body, a trigger group and a firearm locking linkage mechanism, and the firearm locking linkage mechanism is arranged in a cavity arranged in the gun body and excited by the trigger group; the firearm locking linkage mechanism comprises a pulling plug, a pushing and ejecting rod, a locking piece and a driving hammer, the pulling plug is connected with the pushing and ejecting rod, the locking piece abuts against the limiting end face of the pushing and ejecting rod to form limiting in a locking state, and an unlocking part used for making contact with the locking piece and opening the locking state is arranged on the pulling plug; a transmission part is arranged between the bullet pushing rod and the driving hammer, and a first elastic reset piece is arranged between the driving hammer and the inner wall of the gun body; a kidney-shaped hole is formed in the pull plug, a linkage pin which is matched with the kidney-shaped hole and can directionally move in the kidney-shaped hole is arranged on the push-elastic rod, and the unlocking part forms an inner opening and locking state when the pull plug moves relative to the push-elastic rod; according to the utility model, on the premise that no electronic element is needed, the efficiency of simulation feedback and straight pulling operation is compatible.

Description

Technical Field

[0001] This utility model relates to the technical field of internal firearm components, and in particular to a firearm locking linkage mechanism and a firearm using the mechanism. Background Technology

[0002] In pneumatically powered firearms, the realism of the locking mechanism and its operational logic are core elements of the user experience. Traditional firearms often transplant the bolt-action operation mode of real firearms—for example, mimicking the structure of a Mauser bolt-action rifle, requiring the user to first push the handle upwards to disengage it from the locking slot before axially moving it backwards to complete the ejection and reloading process. While this design can simulate the mechanical feedback of a real firearm, the redundant step-by-step operation significantly reduces operational efficiency and creates two user segments: hardcore retro users prefer the ritualistic feel of the rotary locking mechanism, while mainstream tactical users prefer the simplified straight-pull system. This contradiction has led to the traditional rotary mechanism gradually becoming a niche market, especially with the trend towards compact simulation designs, where the compression of the bolt-action area further amplifies the pain points of accidental activation and clunky operation.

[0003] Current direct-pull optimization solutions in the market mainly rely on electronic modifications: a micro-motor drives the push rod to move synchronously, and a Hall sensor and main control chip are used to achieve stepless "direct pull and push" operation. Although such systems significantly reduce mechanical linkages, their technical approach fundamentally conflicts with the underlying requirements of simulated firearms. For example, Chinese invention patent number 202110173133.9 mentions a rifle simulator used for simulation, which involves the application of related Hall sensors.

[0004] However, electronic simulated firearms suffer from response delays in electronic actuators, leading to a lack of synchronization between firing feedback and physical actions, which reduces the immersive experience of training scenarios. In addition, motors may malfunction in low-temperature or humid environments, affecting their usability. Utility Model Content

[0005] The present invention aims to solve the technical problems of how to simultaneously achieve realistic operation feedback and smooth operation of the locking mechanism through a purely mechanical structure, and to solve the technical problems of insufficient reliability of traditional rotary redundant steps and electronic systems.

[0006] To achieve the above objectives, according to one aspect of the utility model, a firearm locking linkage mechanism is provided, which is disposed on the firearm body and triggered by the trigger assembly of the firearm body. It includes a bolt and a push rod, the bolt at least partially extending into the firearm body and connected to the push rod located inside the firearm body. It further includes: a locking member disposed inside the firearm body and abutting against a limiting end face located on the push rod to form a limiting position in the locked state; the bolt is provided with an unlocking part for contacting the locking member and opening the locked state; a hammer disposed inside the firearm body; a transmission part is provided between the push rod and the hammer; the transmission part includes a transmission unit connected to the push rod and a triggering unit linked to the hammer; a first elastic reset member is provided between the hammer and the inner wall of the firearm body; wherein the bolt has a waist-shaped hole, the push rod has a linkage pin that mates with the waist-shaped hole and can move directionally within the waist-shaped hole, and the unlocking part opens the locked state within the stroke of the bolt relative to the push rod.

[0007] As a preferred embodiment of the above technical solution, the locking member is disposed above the push rod, and a second elastic reset member is disposed between the locking member and the inner wall of the gun body.

[0008] As a preferred embodiment of the above technical solution, the area on the locking member that can contact the unlocking part is provided with a gradually rising guide surface. During the contact movement between the unlocking part and the gradually rising guide surface, a vertical component force is generated to cause the locking member to rise upward.

[0009] As a preferred embodiment of the above technical solution, the push rod includes a first push post and a second push post, the second push post is located at the end of the first push post away from the barrel of the gun body, the diameter of the second push post is smaller than the diameter of the first push post, and the limiting end face is located at the junction of the first push post and the second push post.

[0010] As a preferred embodiment of the above technical solution, the triggering unit is a delayed linkage groove opened above the hammer. The transmission unit is driven by the push rod to move unloaded along a predetermined displacement stroke in the delayed linkage groove until the transmission unit abuts against the groove wall of the delayed linkage groove and then drives the hammer to move. The linkage pin and the delayed linkage groove form a displacement threshold triggering linkage.

[0011] As a preferred embodiment of the above technical solution, the hammer is provided with a positioning groove, and the first elastic reset member is partially disposed in the positioning groove to form a positioning.

[0012] As a preferred embodiment of the above technical solution, the push rod further includes a chambering portion that extends into the bore of the gun body, and the chambering portion is interference-fitted to the end of the first push post away from the second push post.

[0013] A firearm includes a gun body, a trigger assembly, and a firearm locking linkage mechanism as described in any one of the above technical solutions. The gun body has a first receiving cavity and a second receiving cavity, which are connected. The push rod, the locking member, and part of the pull bolt are disposed in the first receiving cavity, and the hammer and the first elastic reset member are disposed in the second receiving cavity. The lower end of the hammer has a locking groove, which allows the hammer and the trigger assembly to form a separable locking engagement.

[0014] As a preferred embodiment of the above technical solution, a rotation limiting part is provided on the side of the push rod away from the pull bolt, and a third receiving cavity is provided inside the gun body to cooperate with the rotation limiting part to restrict the movement of the push rod. The third receiving cavity is the movement space of the rotation limiting part when it moves back and forth with the push rod.

[0015] As a preferred embodiment of the above technical solution, the bolt further includes a grip portion protruding from the side of the gun body, and the grip portion is provided with grip stripes to increase the grip area.

[0016] In summary, this utility model has the following advantages:

[0017] 1. This utility model achieves smooth, single-axis locking via a purely mechanical linkage structure, utilizing the directional engagement of the waist-shaped hole and linkage pin on the bolt and the push rod, as well as the coordinated action of the locking and unlocking parts. After firing, the push rod automatically returns to its locked position, eliminating the need for step-by-step rotation for unlocking. When the bolt is pulled back, the unlocking part mechanically triggers the unlocking, then the push rod simultaneously retracts to accumulate power, while the hammer and trigger assembly complete potential energy accumulation and engagement. The entire system, without the need for electronic components, combines the efficiency of simulated feedback and direct-pull operation, while enhancing reliability in complex environments such as low temperature and high humidity, adapting even to compact gun layouts.

[0018] 2. Furthermore, this invention designs the push rod as a composite column with varying diameters. Utilizing the stepped diameter difference between the first and second push columns, the downward stroke of the locking component is limited in stages as it transitions from the first to the second push column. The elastic potential energy of the locking component's hinge can be released in a stepped manner during the diameter transition between the two push columns, significantly reducing the peak contact stress of the pivot hinge compared to traditional instantaneous impact-based separation. Simultaneously, the physical limitation of the locking component's downward stroke avoids cumulative displacement caused by over-displacement, significantly improving locking reliability over long-term use.

[0019] 3. Furthermore, the delay linkage mechanism composed of the delay linkage groove at the top of the hammer and the transmission unit achieves flexible buffering through the free stroke of the front section of the delay linkage groove in the initial stage of the push rod being pulled back, while the rear section of the delay linkage groove rigidly abuts against the hammer to force linkage, forming a two-stage transmission chain; this design reduces the deformation of components caused by the instantaneous strong impact when the trigger group is triggered, and ensures that the energy at the end of the transmission is transferred to the push rod without loss, taking into account both system life and firing efficiency;

[0020] Further or other beneficial effects will be discussed in the embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the outline of the gun body of this utility model;

[0022] Figure 2 This is a schematic diagram of the unlocked state of the firearm locking linkage mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram showing the unlocked state of the gun body, trigger group, and gun locking linkage mechanism of this utility model after they are combined.

[0024] Figure 4 This is a schematic diagram of the locked state of the firearm locking linkage mechanism of this utility model;

[0025] Figure 5 This is a schematic diagram of the locked state after the gun body, trigger group and gun locking linkage mechanism of this utility model are coordinated.

[0026] Figure 6 This is a schematic diagram showing the cooperation between the third accommodating cavity and the rotation limiting part of this utility model;

[0027] Among them, 1-bolt, 11-unlocking part, 12-waist-shaped hole, 13-grip part, 131-grip stripe, 2-push rod, 21-limiting end face, 22-linkage pin, 23-rotation limiting part, 201-first push post, 202-second push post, 203-barrel feed part, 3-locking part, 31-gradient guide surface, 4-hammer, 41-positioning groove, 42-locking groove, 5-transmission part, 51-transmission unit, 52-delay linkage groove, 6-gun body, 61-first accommodating cavity, 62-second accommodating cavity, 63-third accommodating cavity, 621-positioning protrusion, 7-trigger assembly, a-first elastic reset part and b-second elastic reset part. Detailed Implementation

[0028] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0029] The present invention will be further explained below with reference to the embodiments:

[0030] Example 1:

[0031] A firearm locking linkage mechanism, referring to Figure 2 and Figure 4 The firearm locking linkage mechanism, mounted on the gun body and triggered by the trigger assembly, includes a bolt 1, a push rod 2, a locking element 3, and a hammer 4. A portion of the bolt 1 extends into the gun body and connects to the push rod 2 located inside the gun body. The locking element 3 is located inside the gun body and abuts against the limiting end face 21 of the push rod 2 to form a limit in the locked state. The bolt 1 has an unlocking part 11 for contacting the locking element 3 and opening the locked state. The hammer 4 is located inside the gun body. A transmission part 5 is provided between the push rod 2 and the hammer 4. The transmission part 5 includes a transmission unit 51 connected to the push rod 2 and a triggering unit linked to the hammer 4. A first elastic reset element a is provided between the hammer 4 and the inner wall of the gun body. The bolt 1 has a waist-shaped hole 12. The push rod 2 has a linkage pin 22 that mates with the waist-shaped hole 12 and can move directionally within the waist-shaped hole 12. The unlocking part 11 opens the locked state within the stroke of the bolt 1 relative to the push rod 2.

[0032] Based on the above structural configuration, the fundamental principle of this application's structure is that, triggered by the trigger assembly of the gun body, the hammer 4 is reset by the release of potential energy of the first elastic reset member a. Driven by the transmission part 5, the push rod 2 moves together, and the front end of the push rod 2 extends into the chamber to trigger the bullet. Simultaneously, during the above process, the bolt 1 is also pushed forward by the push rod 2 to reset. During the movement of both, after the unlocking part 11 and the push rod 2 reset together, the locking part 3 automatically abuts against the limiting end face 21 of the push rod 2 to form a limit, that is, the entire structure completes one firing operation and becomes locked. The following explains how to unlock the locked state: pull the bolt 1 to move backward. The waist-shaped hole 12 of bolt 1 moves backward relative to the linkage pin 22. During the movement, the unlocking part 11 of bolt 1 contacts the locking part 3 (note: at this time bolt 1 does not drive the push rod 2) and pushes the locking part 3 so that the locking state between the locking part 3 and the push rod 2 is opened. Bolt 1 continues to move backward and the linkage pin 22 abuts against the end face of the waist-shaped hole 12. At this time, the push rod 2 is also moved backward by bolt 1. Under the drive of the transmission part 5, the hammer 4 also moves backward and accumulates the elastic potential energy of the second elastic reset part b. After moving to a certain position, the locking area opened on the hammer 4 is locked by the trigger structure, thus completing a complete bolt 1 action.

[0033] In this embodiment, the push rod 2 includes a chamber inlet 203 that extends into the barrel when fired. The push rod 2, excluding the chamber inlet 203, has two designs:

[0034] Firstly, the main body of the push rod 2 is a cylinder of equal diameter, with the aforementioned infeed portion 203 interference fit at its front end and an axial limiting end face 21 formed at its rear end; correspondingly, the locking member 3 is mounted on the top of the inner wall of the gun body by a hinge pivot, located above the push rod 2, and a second elastic reset member b is mounted between the locking member 3 and the gun body, the second elastic reset member b being a short-stroke compression reset spring;

[0035] When the operator pulls the bolt 1 and causes the push rod 2 to move backward, the bottom of the locking part 3 is continuously supported by the outer circular surface of the push rod 2, so that the locking part 3 is in the unlocked state and disengages from the limit function; when the push rod 2 is driven forward by the hammer 4 to move forward by a set stroke, after the bottom surface of the locking part 3 disengages from the outer circular surface of the push rod 2, it returns to its original position under the combined action of the return spring force and its own weight, and the locking teeth of the locking part 3 abut against the limit end face 21 of the push rod 2 to complete the mechanical locking.

[0036] Secondly, the push rod 2 adopts a stepped differential diameter composite column, which includes a first push rod 201 and a second push rod 202. The front end of the first push rod 201 is interference-fitted with the aforementioned infeed portion 203. The second push rod 202 is located at the end of the first push rod 201 away from the infeed portion 203 (or, in other words, the second push rod 202 is located at the end of the first push rod 201 away from the barrel). The diameter of the second push rod 202 is smaller than the diameter of the first push rod 201. The limiting end face 21 is located at the junction of the first push rod 201 and the second push rod 202.

[0037] In this embodiment, the second method is adopted as the preferred solution. Compared with the instantaneous impact locking in the first solution where the locking member 3 is directly separated from the equal-diameter push rod, the preferred solution uses a stepped support structure of stepped columns to form a gradient release path of elastic potential energy during the stroke of the locking member 3 from disengaging from the outer diameter support of the first push rod 201 to contacting the outer diameter support of the second push rod 202. This significantly reduces the risk of fatigue damage to the pivot hinge of the locking member 3. At the same time, because the maximum downward displacement of the locking member 3 is limited, it ensures that the lifting cooperation between the locking member 3 and the unlocking part 11 is always within the preset range, completely avoiding the situation where excessive displacement causes the locking member 3 to accumulate offset after reset, resulting in the failure of the entire locking member 3.

[0038] The locking member 3 has a gradually rising guide surface 31 in the area that can contact the unlocking part 11. During the contact movement between the unlocking part 11 and the gradually rising guide surface 31, a vertical force is generated, causing the locking member 3 to rise upward. Specifically, the gradually rising guide surface 31 has a continuous gradient rising shape along the barrel axis. After the unlocking part 11 contacts and interferes with the gradually rising guide surface 31 during the movement, the component force of the inclined surface forces the locking member 3 to rise at a controllable angle around the pivot rotation center, thereby releasing the contact constraint between the locking member 3 and the limiting end face 21 of the push rod 2.

[0039] The triggering unit is a delayed linkage groove 52 located above the hammer 4. The transmission unit 51 is driven by the push rod 2 to move unloaded along a predetermined displacement stroke within the delayed linkage groove 52 until the transmission unit 51 abuts against the groove wall of the delayed linkage groove 52, thereby driving the hammer 4 to move. The linkage pin 22 and the delayed linkage groove 52 form a displacement threshold triggering linkage. Specifically, the delayed linkage mechanism consists of a through-type waist-shaped slide rail located at the top of the hammer 4 body and an interference fit transmission pin at the bottom of the push rod 2: the front end of the waist-shaped slide rail extends to the impact surface of the hammer 4, and the rear end is defined as the limit drive groove wall; the axis of the transmission pin is arranged orthogonally to the plane of the slide rail. In the initial stage of the push rod 2 sliding away from the barrel, the transmission pin moves freely in the front section of the slide rail to form an unloaded buffer period; when the displacement of the transmission pin exceeds the critical point, it makes hard contact with the rear end of the slide rail and forcibly pulls the hammer 4 to move. This achieves a composite transmission mechanism that combines flexible buffer transition with rigid kinetic energy conduction. This design not only reduces the rigid impact peak when the trigger is activated, extending the service life of the entire system, but also ensures the energy transfer efficiency at the end of firing.

[0040] The hammer 4 has a positioning groove 41, and the first elastic reset member a is partially disposed in the positioning groove 41 to provide fixation for the first elastic reset member a. The first elastic reset member a is a long-stroke reset spring.

[0041] Example 2:

[0042] A type of firearm, reference Figure 1 , Figure 3 and Figure 5 The gun includes a gun body 6, a trigger assembly 7, and the firearm locking linkage mechanism in Embodiment 1. The gun body 6 has a first receiving cavity 61 and a second receiving cavity 62, which are connected. The push rod 2, the locking member 3, and part of the pull bolt 1 are disposed in the first receiving cavity 61. The hammer 4 and the first elastic reset member a are disposed in the second receiving cavity 62. The second receiving cavity 62 has a positioning protrusion 621621, which is inserted into the first elastic reset member a to form a positioning. It cooperates with the positioning groove 41 on the hammer 4 to realize the front and rear positioning of the first elastic reset member a. The lower end of the hammer 4 has a locking groove 42, which makes the hammer 4 and the trigger assembly 7 form a separable locking engagement.

[0043] A rotation limiting part 23 is provided on the side of the push rod 2 away from the bolt 1. Referring to Figure 6 (the bolt is not shown in the figure to avoid too many lines affecting the view), a third receiving cavity 63 is provided inside the gun body 6 to cooperate with the rotation limiting part 23 to restrict the movement of the push rod 2. The third receiving cavity 63 is the movement space for the rotation limiting part 23 when it moves back and forth with the push rod 2. Based on the above configuration, it can effectively prevent the push rod 2 from rotating in the first receiving cavity 61 and the hammer 4 in the second receiving cavity 62, thereby improving the working stability of the entire device.

[0044] In addition, the bolt 1 also includes a grip part 13 protruding from the side of the gun body 6, and the grip part 13 is provided with grip stripes 131 to increase the grip area.

[0045] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0046] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A gun locking linkage, which is arranged on a gun body and is triggered by a trigger group of the gun body, comprising a pull bolt (1) and a pusher rod (2), wherein the pull bolt (1) at least partially extends into the interior of the gun body and is connected with the pusher rod (2) located in the interior of the gun body, characterized in that, It also includes: The locking component (3) is located inside the gun body and abuts against the limiting end face (21) located on the push rod (2) to form a limiting position in the locked state. The pull bolt (1) is provided with an unlocking part (11) for contacting the locking component (3) and opening the locked state. Hammer (4) is located inside the gun body. A transmission part (5) is provided between the push rod (2) and the hammer (4). The transmission part (5) includes a transmission unit (51) connected to the push rod (2) and a triggering unit linked with the hammer (4). A first elastic reset member (a) is provided between the hammer (4) and the inner wall of the gun body. The bolt (1) has a waist-shaped hole (12), and the push rod (2) is provided with a linkage pin (22) that cooperates with the waist-shaped hole (12) and can move in a direction within the waist-shaped hole (12). The unlocking part (11) opens the locked state within the stroke of the bolt (1) relative to the push rod (2).

2. A firearm lock linkage as defined in claim 1, wherein The locking member (3) is located above the push rod (2), and a second elastic reset member (b) is provided between the locking member (3) and the inner wall of the gun body.

3. A firearm lock linkage as defined in claim 2, wherein, The locking member (3) has a gradually rising guide surface (31) in the area that can contact the unlocking part (11). When the unlocking part (11) contacts the gradually rising guide surface (31), a vertical force is generated to make the locking member (3) rise upward.

4. A firearm lock linkage as defined in claim 1, wherein The push rod (2) includes a first push post (201) and a second push post (202). The second push post (202) is located at the end of the first push post (201) away from the barrel of the gun body. The diameter of the second push post (202) is smaller than the diameter of the first push post (201). The limiting end face (21) is located at the junction of the first push post (201) and the second push post (202).

5. A firearm lock linkage as defined in claim 1, wherein, The triggering unit is a delay linkage groove (52) opened above the hammer (4). The transmission unit (51) is driven by the push rod (2) to move unloaded along the predetermined displacement stroke in the delay linkage groove (52) until the transmission unit (51) abuts against the groove wall of the delay linkage groove (52) and then drives the hammer (4) to move. The linkage pin (22) and the delay linkage groove (52) form a displacement threshold triggering linkage.

6. A firearm lock linkage as defined in claim 1, wherein The hammer (4) has a positioning groove (41), and the first elastic reset member (a) is partially disposed in the positioning groove (41) to form a positioning.

7. A firearm lock linkage as defined in claim 4, wherein The push rod (2) also includes a chambering part (203) that extends into the barrel of the gun body. The chambering part (203) is interference-fitted to the end of the first push rod (201) away from the second push rod (202).

8. A firearm characterized by, The firearm includes a gun body (6), a trigger assembly (7), and a firearm locking linkage mechanism as described in any one of claims 1-7. The gun body (6) has a first accommodating cavity (61) and a second accommodating cavity (62) inside, and the first accommodating cavity (61) and the second accommodating cavity (62) are connected. The push rod (2), the locking member (3), and part of the pull bolt (1) are disposed in the first accommodating cavity (61), and the hammer (4) and the first elastic reset member (a) are disposed in the second accommodating cavity (62). The lower end of the hammer (4) has a locking groove (42), and the locking groove (42) enables the hammer (4) and the trigger assembly (7) to form a separable locking engagement.

9. A firearm as defined in claim 8, wherein, The push rod (2) is provided with a rotation limiting part (23) on the side away from the pull bolt (1). The gun body (6) has a third accommodating cavity (63) inside, which cooperates with the rotation limiting part (23) to restrict the movement of the push rod (2). The third accommodating cavity (63) is the movement space of the rotation limiting part (23) when it moves back and forth with the push rod (2).

10. The firearm of claim 8, wherein, The bolt (1) also includes a grip portion (13) protruding from the side of the gun body (6), and the grip portion is provided with grip stripes (131) to increase the grip area.

Images