A fast limit locking structure

Abstract

The invention discloses a quick limit locking structure, comprising a base, a dovetail seat, a limit shaft and a handle, wherein the upper part of the base is provided with a notch; the dovetail seat is arranged above the base and is slidably connected with the base, the tail part is provided with a longitudinal groove, one side of the tail part is provided with a cylindrical part, the end face of the cylindrical part is provided with a spiral surface, the limit shaft sleeve is arranged at the tail part of the dovetail seat, one end is threadedly connected with the handle, one side of the limit shaft is provided with a notch, one side of the handle is provided with a boss, which cooperates with the spiral surface of the dovetail seat, and a locking pin is radially provided on the upper edge of the handle for stopping rotation when the handle is connected with the limit shaft. In a natural state, the handle is in a vertical state, the boss of the handle is located at the lowest point of the spiral surface, the cylindrical surface of the limit shaft is separated from the notch of the base, and the dovetail seat can be slidably separated from the base. When limit locking is required, the handle is rotated, and the boss of the handle climbs from the low point of the spiral surface to the high point of the spiral surface to lock the dovetail seat and the base. After the handle is rotated 90 degrees, the boss of the handle is separated from the spiral surface, and at this time, the cylindrical surface of the limit shaft overlaps with the notch of the base to limit the sliding of the dovetail seat and the base.

Description

Technical Field

[0001] The present invention relates to the technical field of firearms, and in particular to a rapid limiting locking structure. Background Art

[0002] In the design of modern firearm structures, situations are often encountered that require both limiting and locking. For example, the connection between firearm accessories such as handguards and front sights and barrel components. The traditional solution is generally to use screw locking and limiting, which is cumbersome to disassemble and assemble and has poor ergonomics. Summary of the invention

[0003] The purpose of the present invention is to provide a quick limit locking structure to solve the problems existing in the prior art, which can quickly realize the installation of firearm accessories and firearms, is easy to operate, can be quickly disassembled, combined and locked, and has better human-machine efficiency.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A quick limit locking structure comprises a base, a dovetail seat, a limit shaft and a handle, wherein the base is provided with a gun barrel component, and the upper part of the base is provided with a notch along the radial direction of the gun barrel component; the dovetail seat is provided with a gun accessory, and is arranged above the base and is slidably connected with the base; a longitudinal groove is provided at the tail of the dovetail seat for locking the base with the dovetail seat, a cylindrical part is provided at the tail of the dovetail seat along the radial side of the gun barrel component, a spiral surface is provided on the end face of the cylindrical part, and the spiral surface is arranged diagonally; the limit shaft sleeve is provided at the tail of the dovetail seat and is arranged perpendicular to the gun barrel component; one end of the limit shaft extends out of the dovetail seat and is threadedly connected to the handle; a notch is provided at one axial side of the limit shaft; and the handle A boss is provided on the side of the handle close to the dovetail seat, which cooperates with the spiral surface of the dovetail seat. A locking pin is radially provided on the handle to stop the rotation when the handle is connected to the limit shaft. In the natural state, the handle is in a vertical state, the handle boss is located at the lowest point of the spiral surface, and the cylindrical surface of the limit shaft is separated from the notch of the base. At this time, the dovetail seat can be slid and separated from the base. When limit locking is required, the handle is rotated, and the handle boss climbs from the low point of the spiral surface to the high point of the spiral surface to squeeze the dovetail seat to the middle and lock it with the base. After the handle is rotated 90°, the handle boss is separated from the spiral surface. At this time, the cylindrical surface of the limit shaft is engaged with the notch of the base, which limits the sliding of the dovetail seat and the base, thereby realizing clamping and limiting.

[0006] Preferably, two spiral surfaces are provided, each occupying a quarter of the arc of the cylindrical portion, and a V-shaped groove is provided on the cylindrical portion along the axial direction of the barrel component.

[0007] Preferably, the length of the notch of the limiting shaft is greater than the length of the notch of the base, so that after the cylindrical surface of the limiting shaft is separated from the notch of the base, the dovetail seat can be slid and separated from the base.

[0008] Preferably, a dovetail interface is provided on the upper portion of the base along the axial direction of the barrel component, a dovetail groove is provided on the bottom of the dovetail seat along the axial direction of the barrel component, and the base and the dovetail seat are slidably connected through the cooperation of the dovetail interface and the dovetail groove.

[0009] Preferably, the notch is a semicircular groove that passes through the dovetail interface in the width direction.

[0010] Preferably, the longitudinal groove at the tail of the dovetail groove is connected with the dovetail groove.

[0011] Preferably, the handle boss is a V-shaped structure, and two are symmetrically arranged along the radial direction of the barrel component. After being limited and locked, they cooperate with the V-shaped groove of the cylindrical part of the dovetail seat to prevent the base and the dovetail seat from loosening.

[0012] Beneficial effects of the present invention:

[0013] 1. A base and a dovetail seat are provided, the base is provided with a gun barrel component, the dovetail seat is provided with a gun accessory, the base and the dovetail seat are connected in a sliding manner by a dovetail matching method, and a limit shaft is sleeved in the dovetail seat, the limit shaft is connected to the handle, two diagonally arranged spiral surfaces are provided on the cylindrical part of the dovetail seat, a boss is provided on one side of the handle, and the dovetail seat and the base are locked or slidably separated by the matching of the handle boss and the spiral surface;

[0014] 2. There is a notch on the limit shaft. When the base and the dovetail seat are locked, the cylindrical surface of the limit shaft overlaps with the notch of the base to achieve clamping limit. When the locking limit needs to be released, the handle is pulled to drive the limit shaft to rotate, and the cylindrical surface of the limit shaft is separated from the notch of the base. At this time, a clearance space is formed between the notch of the limit shaft and the notch of the base, which can realize the rapid separation of the dovetail seat and the base;

[0015] 3. A V-shaped groove is set on the cylindrical part of the dovetail seat to cooperate with the handle boss. When the handle boss is separated from the spiral surface, it cooperates with the V-shaped groove of the cylindrical part to achieve an anti-loosening effect;

[0016] 4. Easy to operate, can quickly realize the disassembly, combination and locking of firearm accessories and firearms;

[0017] 5. Modular design is adopted, with reasonable layout and novel structure, and there are no loose parts after decomposition;

[0018] 6. It has good ergonomics and can be widely used in various types of limit locking situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention in a locked state;

[0020] Figure 2 It is a structural schematic diagram of the present invention in a released state;

[0021] Figure 3It is a partial cross-sectional schematic diagram of the locking state of the present invention;

[0022] Figure 4 It is a partial cross-sectional schematic diagram of the release state of the present invention;

[0023] Figure 5 It is the structural diagram of dovetail seat;

[0024] Figure 6 It is a partial cross-sectional view of the dovetail seat;

[0025] Figure 7 It is a schematic diagram of the structure of the handle;

[0026] Figure 8 It is a structural schematic diagram of the limit axis;

[0027] Fig. 9 A schematic diagram of the structure of the base.

[0028] Reference numerals

[0029] 1. Dovetail seat; 2. Handle; 3. Lock pin; 4. Limit axis; 5. Base;

[0030] 101, longitudinal groove; 102, cylindrical part; 103, helical surface; 104, V-shaped groove; 105, dovetail groove; 201, boss

[0031] 401, notch; 501, slot; 502, dovetail joint. DETAILED DESCRIPTION

[0032] The working principle and structure of the present invention are further described in detail below in conjunction with the embodiments and drawings.

[0033] like Figures 1 to 9As shown, a quick limit locking structure comprises a base 5, a dovetail seat 1, a limit shaft 4 and a handle 2. A gun barrel component (not shown in the figure) is installed on the base 5. A dovetail interface 502 is provided on the upper part of the base 5 along the axial direction of the gun barrel component, and a notch 501 is provided along the radial direction of the gun barrel component; a firearm accessory is installed on the dovetail seat 1 and is arranged above the base 5. A dovetail groove 105 is provided on the bottom of the dovetail seat 1 along the axial direction of the gun barrel component. The base 5 and the dovetail seat 1 are slidably connected through the cooperation of the dovetail interface 502 and the dovetail groove 105. A longitudinal groove 101 is provided at the tail of the dovetail seat 1 for locking the base 5 with the dovetail seat 1. The tail of the dovetail seat A stepped hole is provided along the radial direction of the barrel component, and a cylindrical portion 102 is provided on one side. A spiral surface 103 is provided on the end surface of the cylindrical portion 102, which are arranged diagonally. The limit shaft 4 is sleeved in the stepped hole at the tail of the dovetail seat 1 and is arranged perpendicular to the barrel component. One end of the limit shaft 4 extends out of the dovetail seat 1 and is threadedly connected to the handle 2. A slot is provided on the head of the limit shaft 4, and one axial side is milled flat to form a notch 401. A boss 201 is provided on the side of the handle 2 close to the dovetail seat 1, which cooperates with the spiral surface 103 of the dovetail seat. In order to prevent the handle from slipping when driving the limit shaft to rotate, a lock pin 3 is also provided radially on the handle to stop rotation.

[0034] like Figure 5 As shown, in this embodiment, the dovetail seat cylindrical portion 102 has two spiral surfaces, each occupying a quarter of the arc of the cylindrical portion 102 , and a V-shaped groove 104 is provided on the cylindrical portion 102 along the axial direction of the barrel component.

[0035] like Figure 7 As shown, in this embodiment, the handle boss 201 is a V-shaped structure, and two are symmetrically arranged along the radial direction of the barrel component. After being limited and locked, they cooperate with the V-shaped groove 104 of the cylindrical part of the dovetail seat to prevent the base 5 and the dovetail seat 1 from loosening.

[0036] like Figure 8 , Fig. 9 As shown, to ensure that the dovetail seat can slide away from the base after the cylindrical surface of the limiting shaft is separated from the base notch, the length of the limiting shaft notch 401 is greater than the length of the base notch 501. In this embodiment, the notch 501 of the base is a semicircular groove that passes through the dovetail interface 502 in the width direction.

[0037] like Figure 5 As shown, the longitudinal groove 101 at the tail of the dovetail groove is connected with the dovetail groove 105, which is conducive to the dovetail seat locking the base or slidingly separating from the base.

[0038] Working process of the present invention:

[0039] Transition from natural state to limit locking state:

[0040] In the natural state, the handle is in a vertical state, and the boss of the handle is located at the lowest point of the spiral surface. When the handle is rotated clockwise, the boss of the handle squeezes and deforms the dovetail seat toward the middle in the process of climbing the spiral surface, thereby locking the dovetail seat and the base; after the handle is rotated 90°, the boss of the handle is separated from the spiral surface and cooperates with the V-shaped groove of the cylindrical part to achieve the effect of preventing loosening; at this time, the cylindrical surface of the limit shaft overlaps with the semicircular groove on the base, limiting the dovetail seat from sliding forward relative to the base, thereby achieving limit locking;

[0041] Transition from limit locking state to natural state:

[0042] When the limit locking state is in the horizontal state, the handle is rotated 90° counterclockwise, the dovetail seat rebounds to the natural state, and the cylindrical surface of the limit shaft is separated from the semicircular groove on the base. At this time, a clearance space is formed between the notch of the limit shaft and the notch of the base, so that the dovetail seat can slide and separate from the base.

[0043] The limit locking structure of the present invention adopts modular design, reasonable layout, novel structure, good ergonomics, and can quickly realize the disassembly and combination of the dovetail seat and the base, that is, the rapid disassembly and combination of the firearm accessories and the firearm, and can be widely used in various types of limit locking occasions.

[0044] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than 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 in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A quick limit locking structure, characterized in that: It includes a base, a dovetail seat, a limit shaft and a handle, wherein the base is provided with a gun barrel component, and a notch is provided on the upper part of the base along the radial direction of the gun barrel component; the dovetail seat is provided with a firearm accessory, which is arranged above the base and is slidably connected with the base; a longitudinal groove is provided at the tail of the dovetail seat for locking the base with the dovetail seat; a cylindrical portion is provided at the tail of the dovetail seat along the radial side of the gun barrel component, and a spiral surface is provided on the end face of the cylindrical portion, and the spiral surface is arranged diagonally; the limit shaft sleeve is provided at the tail of the dovetail seat and is arranged perpendicular to the gun barrel component; one end of the limit shaft extends out of the dovetail seat and is threadedly connected to the handle; a notch is provided on one axial side of the limit shaft; and the handle is close to the dovetail seat. A boss is provided on one side to cooperate with the spiral surface of the dovetail seat. A locking pin is radially provided on the handle to stop the handle from rotating when it is connected to the limit shaft. In the natural state, the handle is in a vertical state, the boss of the handle is located at the lowest point of the spiral surface, and the cylindrical surface of the limit shaft is separated from the notch of the base. At this time, the dovetail seat can be slid and separated from the base. When limited locking is required, the handle is rotated, and the boss of the handle climbs from the lower part of the spiral surface to the higher part of the spiral surface to squeeze the dovetail seat toward the middle and lock it with the base. After the handle is rotated 90°, the boss of the handle is separated from the spiral surface. At this time, the cylindrical surface of the limit shaft overlaps with the notch of the base, limiting the sliding of the dovetail seat and the base, thereby realizing clamping and limiting. The spiral surfaces are provided with two, each occupying a quarter of the arc of the cylindrical part, and a V-shaped groove is provided on the cylindrical part along the axial direction of the gun barrel component; The upper part of the base is provided with a dovetail interface along the axial direction of the barrel component, the bottom of the dovetail seat is provided with a dovetail groove along the axial direction of the barrel component, and the base and the dovetail seat are slidably connected through the cooperation of the dovetail interface and the dovetail groove.

2. A rapid limit locking structure according to claim 1, characterized in that: The length of the notch of the limiting shaft is greater than the length of the notch of the base, so that after the cylindrical surface of the limiting shaft is separated from the notch of the base, the dovetail seat can be slidably separated from the base.

3. A rapid limit locking structure according to claim 1, characterized in that: The notch is a semicircular groove that passes through along the width direction of the dovetail interface.

4. A rapid limit locking structure according to claim 1, characterized in that: The longitudinal groove at the tail of the dovetail groove is connected with the dovetail groove.

5. A rapid limit locking structure according to claim 1, characterized in that: The handle boss is a V-shaped structure, and two are symmetrically arranged along the radial direction of the barrel component. After being limited and locked, they cooperate with the V-shaped groove of the cylindrical part of the dovetail seat to prevent the base and the dovetail seat from loosening.

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