A folding trigger mechanism for folding firearms

Abstract

This invention discloses a folding trigger structure for folding firearms. The structure is simple and the function is safe and reliable. When the magazine grip of the firearm is folded forward, the magazine grip contacts the free end of the trigger, causing the trigger to rotate forward around the trigger axis. The trigger return spring is compressed and deformed. After the magazine grip of the firearm is folded into place and fixed, the trigger return spring remains in a compressed and deformed state. When the magazine grip of the firearm is released and opened, the trigger return spring releases its spring force, causing the trigger to return to its original position until the rear end of the trigger contacts the protrusion.

Description

Technical Field

[0001] This invention relates to the field of firearms technology, and in particular to a folding trigger structure for folding firearms. Background Technology

[0002] With changes in the domestic and international situation, the demand for special firearms with concealment and camouflage functions is becoming increasingly prominent. Camouflaged firearms mostly adopt a folding mechanism to disguise the appearance of the firearm.

[0003] To reduce size, folding firearms typically feature a magazine grip that folds forward (and remains stationary). This necessitates a foldable trigger that is also safe and reliable. Therefore, the biggest challenge in folding firearms lies in achieving a foldable trigger that can be safely and reliably fired when unfolded. Some firearms use recesses to accommodate the trigger and prevent it from folding, but this increases the overall size of the weapon. Summary of the Invention

[0004] The purpose of this invention is to provide a folding trigger structure for folding firearms, based on the need for a folding trigger structure in camouflaged firearm design. This structure is simple in design and functionally safe and reliable.

[0005] The objective of this invention is achieved as follows:

[0006] A folding trigger structure for folding firearms includes a trigger, a pull rod, a trigger return spring, a trigger shaft, a right trigger link, a left trigger link, a trigger pull rod spring, and a trigger pull rod spring shaft;

[0007] The trigger and lever are located between the right trigger link and the left trigger link. The lever is hinged to the upper ends of the right trigger link and the left trigger link via a trigger lever spring shaft. A trigger lever spring is sleeved on the trigger lever spring shaft. The trigger lever spring is used to drive the right trigger link, the left trigger link, and the lever to reset after firing. The trigger is hinged to the lower ends of the right trigger link and the left trigger link via a trigger shaft. The trigger shaft is fixed to the firearm body. The lower ends of the right trigger link and the left trigger link are respectively provided with protrusions, which are used to abut against the rear end of the trigger. When the trigger is pulled, the trigger can drive the lower ends of the right trigger link and the left trigger link to move backward, thereby driving the upper ends of the right trigger link and the left trigger link to move forward, thereby driving the lever and firing the firearm.

[0008] The trigger has a square slot, the trigger return spring is V-shaped and is installed in the square slot of the trigger. The upper end of the trigger return spring is hooked to the bolt catch, the lower end of the trigger return spring acts on the square slot on the trigger, and the bent part of the trigger return spring is positioned on the trigger shaft.

[0009] When the magazine grip of the firearm is folded forward, the magazine grip contacts the free end of the trigger, causing the trigger to rotate forward around the trigger axis. The trigger return spring is compressed and deformed. After the magazine grip of the firearm is folded into place and fixed, the trigger return spring remains in a compressed and deformed state.

[0010] When the magazine grip of the firearm is released and opened, the trigger return spring releases its spring force, driving the trigger to return to its original position until the rear end of the trigger contacts the protrusion.

[0011] Preferably, the protrusions at the lower ends of the right trigger link and the left trigger link extend toward each other.

[0012] Preferably, the trigger lever spring is a torsion spring, with one spring leg acting on the trigger and the other spring leg acting on the lever.

[0013] Preferably, in the trigger reset state, the trigger return spring returns to its maximum opening angle.

[0014] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0015] The folding trigger has a simple structure, and the folding and unfolding of the trigger for firing is safe and reliable.

[0016] The folding trigger has a compact structure, enabling compact and lightweight design of the firearm.

[0017] The structural principle is highly reproducible, providing a mature structure for the design of folding triggers in disguised firearms.

[0018] The folding trigger can be retracted and folded, and can be pulled normally to fire when unfolded. The folding trigger can be widely used in firearms such as pistols and submachine guns, especially folding firearms. By adopting the folding trigger principle, the space layout can be reduced, and a compact design can be achieved. Attached Figure Description

[0019] Figure 1 This is a schematic overall drawing of the present invention, showing the assembly diagram with the trigger in the open state;

[0020] Figure 2 This is a schematic diagram illustrating the relationship between the trigger return spring of the present invention and the bolt catch and trigger of the firearm;

[0021] Figure 3 This is a schematic diagram of the overall assembly of the trigger in the folded state of the present invention, and a schematic diagram of the folding action relationship;

[0022] Figure 4 This is a schematic diagram illustrating the interaction between the trigger pull rod spring, the trigger, and the trigger pull rod of the present invention.

[0023] Figure 5 This is a schematic diagram of the connection structure of the trigger, trigger return spring, trigger shaft, and right / left trigger linkage of the present invention;

[0024] Figure 6 This is a schematic diagram of the right / left trigger linkage, trigger pull rod spring, trigger pull rod spring shaft, and pull rod connection structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the trigger return spring structure of the present invention. Attached image description:

[0027] 1-Trigger, 2-Trigger return spring, 3-Trigger shaft, 4-Right trigger linkage, 5-Left trigger linkage, 6-Trigger pull rod spring, 7-Trigger pull rod spring shaft, 8-Pull rod.

[0028] 101-Trigger square groove.

[0029] 401 - Protrusion that connects the right trigger link to the trigger; 402 - Shaft hole below the right trigger link; 403 - Shaft hole above the right trigger link.

[0030] 501 - Protrusion that connects the left trigger link to the trigger; 502 - Shaft hole below the left trigger link; 503 - Shaft hole above the left trigger link. Detailed Implementation

[0031] The invention will be further described below with reference to the accompanying drawings. In the specific implementation process of the invention, the definition of direction is: forward / forward is attached. Figure 1 Trigger 1 bending direction, downward / downward is the auxiliary direction. Figure 1 Trigger 1 is pointing downwards.

[0032] This invention relates to a folding trigger structure for folding firearms. The folding trigger structure allows the trigger 1 to fold in a bending direction and automatically return to its original position after unfolding. The trigger return spring 2 of the folding trigger structure has a "V" shape. After the trigger 1 returns to a certain angle, the trigger return spring 2 no longer applies pressure to the trigger 1. The "V" shape design of the trigger return spring 2 ensures that after returning from a compressed state to its original state, there is no spring force applied to the trigger 1, avoiding the risk of the trigger return spring 2 continuing to apply force to the trigger 1 after unfolding, which could lead to automatic firing. The folding trigger structure is safe and reliable. The trigger lever spring 6 of the folding trigger structure is a torsion spring. When the finger that pulled the trigger leaves the trigger 1, the trigger 1 and lever 8 can automatically return to their original positions.

[0033] The folding trigger consists of a trigger 1, a trigger return spring 2, a trigger shaft 3, a right trigger link 4, a left trigger link 5, a trigger pull spring 6, a trigger pull spring shaft 7, and a pull rod 8. The trigger return spring 2 is installed in the square groove 101 of the trigger 1. The trigger 1, the trigger return spring 2, and the right / left trigger links 4 / 5 are connected to the trigger shaft 3 through shaft holes 402 / 502. The right / left trigger links 4 / 5 and the trigger pull spring 6 are connected to the trigger pull spring shaft 7.

[0034] The folding trigger structure described in this invention is shown in the appendix. Figure 1 From top to bottom, there are trigger pull spring 6, trigger pull spring shaft 7, pull rod 8, right trigger linkage 4, left trigger linkage 5, trigger 1, trigger shaft 3, and trigger return spring 2.

[0035] The folding trigger structure includes a square groove 101 on the trigger 1, an actuating protrusion 401 / 501 below the right / left trigger linkage 4 / 5, and shaft holes 402 / 502 / 403 / 503 in the middle and upper parts. (See attached document) Figure 2 The trigger return spring 2 is installed in the square slot 101 on the trigger 1. (See attached image) Figure 5 The right trigger linkage 4, trigger 1, trigger return spring 2, and left trigger linkage 5 are sequentially mounted on the trigger shaft 3 from right to left. See attached document. Figure 4 , 6 The trigger lever spring shaft 7 is connected to the right / left trigger linkage 4 / 5 through the shaft hole 403 / 503. From right to left, the trigger linkage 4, trigger lever spring 6, lever 8 and left trigger linkage 5 are sequentially connected to the trigger linkage spring shaft 7.

[0036] The structure of the trigger return spring 2 in the folding trigger structure is shown in the appendix. Figure 7 Its structure is V-shaped.

[0037] The folding trigger structure is shown in the appendix. Figure 3 When trigger 1 bends forward in the bending direction, the right / left trigger linkage 4 / 5 and pull rod 8 do not move with trigger 1. See appendix. Figure 2 After being folded and unfolded, trigger 1 can automatically reset under the action of trigger return spring 2. See attached document. Figure 4 When trigger 1 is pulled, the actuating protrusions 401 / 501 on the right / left trigger linkage 4 / 5 interfere with trigger 1, thereby causing it to rotate. (See appendix) Figure 5 The trigger shaft 3, in addition to being connected to the folding trigger structure, is fixedly connected to the gun body at both ends. The trigger 1, trigger return spring 2, and right / left trigger linkage 4 / 5 connected to the trigger shaft 3 are rotatable connections, allowing rotation around the trigger shaft 3 when the trigger 1 is folded, unfolded, or pulled to fire. See appendix. Figure 6 The right / left trigger linkage 4 / 5 and the lever 8 connected by the trigger lever spring shaft 7 are hinged. When the right / left trigger linkage 4 / 5 rotates, it drives the lever 8 to move, thus firing.

[0038] The lever is the intermediate connecting part between the trigger and the firing mechanism in a firearm firing mechanism, and generally refers to the intermediate components between the trigger and the firing mechanism.

[0039] The trigger 1 has a square slot 101, and the trigger return spring 2 is V-shaped and installed in the square slot 101 of the trigger 1. The upper end of the trigger return spring 2 acts on the bolt catch (e.g., when the firearm is empty). Figure 2 The lower end of the trigger return spring 2 acts on the square groove 101 on the trigger 1 (e.g., Figure 2 The bent part of the trigger return spring 2 is fitted onto the trigger shaft 3. When the magazine grip (such as...) is engaged... Figure 3 When the trigger folds forward, it contacts the tip of trigger 1, causing trigger 1 to rotate forward around trigger shaft 3. During this process, the rear end of trigger 1 disengages from protrusions 401 and 501, trigger return spring 2 is compressed and deformed, and right trigger linkage 4 and left trigger linkage 5 do not move with trigger 1; when the magazine grip (such as...) is turned forward... Figure 3 When the trigger is opened backward, the trigger return spring 2 releases its spring force, driving the trigger 1 to return to its original position until the rear end of the trigger 1 contacts the protrusions 401 and 501 and then stops.

[0040] The trigger return spring 2 releases the spring force, causing the trigger 1 to return to its original state. When the rear end of the trigger 1 disengages from the contact of the protrusions 401 and 501, the trigger return spring 2 has returned to its original state (i.e., opened to the maximum angle, at which point the spring force of the trigger return spring 2 is zero), thereby preventing the trigger 1 from being pulled and fired by itself under the action of the trigger return spring 2.

[0041] 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 folding trigger structure for a folding firearm, comprising a trigger and a lever, characterized in that: It also includes a trigger return spring, a trigger shaft, a right trigger linkage, a left trigger linkage, a trigger pull rod spring, and a trigger pull rod spring shaft; The trigger and lever are located between the right trigger link and the left trigger link. The lever is hinged to the upper ends of the right trigger link and the left trigger link via a trigger lever spring shaft. A trigger lever spring is sleeved on the trigger lever spring shaft. The trigger lever spring is used to drive the right trigger link, the left trigger link, and the lever to reset after firing. The trigger is hinged to the lower ends of the right trigger link and the left trigger link via a trigger shaft. The trigger shaft is fixed to the firearm body. The lower ends of the right trigger link and the left trigger link are respectively provided with protrusions, which are used to abut against the rear end of the trigger. When the trigger is pulled, the trigger can drive the lower ends of the right trigger link and the left trigger link to move backward, thereby driving the upper ends of the right trigger link and the left trigger link to move forward, thereby driving the lever and firing the firearm. The trigger has a square slot, the trigger return spring is V-shaped and is installed in the square slot of the trigger. The upper end of the trigger return spring is hooked to the bolt catch, the lower end of the trigger return spring acts on the square slot on the trigger, and the bent part of the trigger return spring is positioned on the trigger shaft. When the magazine grip of the firearm is folded forward, the magazine grip contacts the free end of the trigger, causing the trigger to rotate forward around the trigger axis. The trigger return spring is compressed and deformed. After the magazine grip of the firearm is folded into place and fixed, the trigger return spring remains in a compressed and deformed state. When the magazine grip of the firearm is released and opened, the trigger return spring releases its spring force, driving the trigger to return to its original position until the rear end of the trigger contacts the protrusion. When the trigger is in the reset state, the trigger return spring returns to its maximum opening angle.

2. The folding trigger structure for a folding firearm according to claim 1, characterized in that: The protrusions at the lower ends of the right trigger link and the left trigger link extend toward each other.

3. A folding trigger structure for a folding firearm according to claim 1, characterized in that: The trigger lever spring is a torsion spring, with one spring leg acting on the trigger and the other spring leg acting on the lever.

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