An adjustable cheek plate structure and a gun stock using the same

Abstract

The utility model relates to a gun stock or gun stock component technical field, and a kind of adjustable cheek plate structure and use the gun stock of cheek, including adjustable cheek plate structure, adjustable cheek plate structure includes: movable cheek, slidably sleeve joint in the outside of the gun stock, the movable cheek is opened with through type guide slot along vertical direction, the side wall of guide slot is equipped with the positioning groove of several arranged with preset interval;Transverse limit pin is transversely passed through the gun stock setting, and the end of transverse limit pin is equipped with the embedded part matched with the positioning groove;Unlocking mechanism is longitudinally movably arranged in the inside of the gun stock along the gun stock axis, and the unlocking mechanism is equipped with linkage hole passing through the unlocking mechanism, and the transverse limit pin is passed through the linkage hole and is contacted with the hole wall of linkage hole and forms cooperation, and the tail end of gun stock is opened with accommodating cavity inward, and unlocking mechanism is longitudinally arranged in the accommodating cavity;The utility model realizes the one-key type quick adjustment of cheek plate height.

Description

Technical Field

[0001] This utility model relates to the technical field of gunstocks or gunstock components, and in particular to an adjustable cheek rest structure and a gunstock using the cheek rest. Background Technology

[0002] As a rifle shooting aid, the cheek rest's core function is to provide stable support for the shooter's cheekbone and face, ensuring the aiming baseline is aligned with the shooter's line of sight, thereby improving shooting accuracy. Traditional rifles mostly use a fixed cheek rest structure, whose design is based on the reference height of mechanical sights and cannot adapt to changes in the firing baseline of different optical sights. When high-magnification scopes, red dot sights, or other optical sights are installed, the increased firing baseline forces the shooter to adjust their head posture, causing aiming fatigue and even a decrease in accuracy. Furthermore, in special operations environments, shooters need to quickly adjust the cheek rest height to adapt to diverse sights according to tactical requirements, and the rigid design of traditional cheek rest structures severely limits the equipment's versatility and adaptability.

[0003] To address the aforementioned shortcomings, Chinese utility model patent No. 202221943054.8 discloses a height-adjustable cheek rest and a rifle. The height-adjustable cheek rest is mounted on the rifle stock and includes: a base detachably fixed to the stock, with a height adjustment mechanism on its side; and a cheek rest mounted above the top of the stock, with a downwardly extending first side connecting portion on its side, which is movably connected to the height adjustment mechanism to adjust the relative height between the cheek rest and the top of the stock. In this patent embodiment, the cheek rest is fixed to the top of the stock by the base, allowing the shooter's cheek and cheekbone to rest against the cheek rest during firing, maintaining a stable aiming posture. The height adjustment mechanism allows adjustment of the relative distance between the cheek rest and the top of the stock, thus achieving height adjustment and adapting to different shooting baselines with optical sights, improving the cheek rest's adaptability.

[0004] However, the stock adjustment in existing technology is too cumbersome and has poor adaptability. Utility Model Content

[0005] The technical problem this invention aims to solve is that traditional cheek rest height adjustment schemes are cumbersome to operate and cannot simultaneously meet the rapid adaptation needs of tactical or performance scenarios.

[0006] To achieve the above objectives, according to one aspect of the utility model, an adjustable cheek rest structure is provided, which is mounted on the stock of a firearm or a replica firearm. The structure includes: a movable cheek rest, slidably fitted onto the outside of the stock, the movable cheek rest having a through guide groove in the vertical direction, and the sidewall of the guide groove having a plurality of positioning grooves arranged at preset intervals; a transverse limiting pin, transversely penetrating the stock, the end of the transverse limiting pin having a fitting portion that mates with the positioning grooves; and an unlocking mechanism, longitudinally movably disposed inside the stock along the axis of the stock, the unlocking mechanism having a linkage hole penetrating the unlocking mechanism, the transverse limiting pin passing through the linkage hole and forming a contact engagement with the hole wall of the linkage hole; wherein, when the unlocking mechanism is pressed by an external force, the pressure exerted by the hole wall of the linkage hole on the transverse limiting pin forces the fitting portion to disengage from the current positioning groove.

[0007] As a preferred embodiment of the above technical solution, the contact surface between the active cheek patch and the human cheek is a hyperbolic surface symmetrically distributed along the longitudinal axis. The hyperbolic surface transitions through a continuous gradient curvature to form a composite ergonomic surface that synchronously fits the cheekbone area and the jaw contact area of ​​the human face.

[0008] As a preferred embodiment of the above technical solution, the lateral limiting pin is interference-fitted with the unlocking mechanism.

[0009] A gunstock with an adjustable cheek rest structure includes the adjustable cheek rest structure described in any of the above technical solutions. The rear end of the gunstock has an inwardly opening receiving cavity, and the unlocking mechanism is longitudinally disposed within the receiving cavity.

[0010] As a preferred embodiment of the above technical solution, the unlocking mechanism includes an operation button and an elastic compression member, wherein the elastic compression member abuts against the front end face of the operation button and the inner wall of the accommodating cavity.

[0011] As a preferred embodiment of the above technical solution, the pressing end of the operation button is flush with the rear end face of the stock.

[0012] As a preferred embodiment of the above technical solution, the movable cheek rest includes a main body and a pair of adjusting wings symmetrically distributed on both sides of the main body. The guide grooves are respectively opened on the adjusting wings on both sides. The stock is provided with guide rails on both sides that match the outer contour of the adjusting wings. The adjusting wings are fitted into the guide rails to form a vertically movable limiting structure.

[0013] As a preferred embodiment of the above technical solution, the stock is provided with a horizontally penetrating leverage space, which is located below the movable cheek rest.

[0014] As a preferred embodiment of the above technical solution, the stock is provided with a waist-shaped hole, and the lateral limiting pin is inserted in the waist-shaped hole to form a sliding pair. The waist-shaped hole is arranged parallel to the axial direction of the stock so that the lateral limiting pin can move relative to the front and rear directions of the stock.

[0015] In summary, this utility model has the following advantages: 1. This utility model achieves one-button quick adjustment of the cheek rest height by using a rigid fitting structure of a guide groove for the movable cheek rest and a stepped positioning groove in conjunction with a transverse limiting pin, combined with the linkage control of a longitudinal pressing unlocking mechanism; when unlocking, the transverse limiting pin is squeezed to disengage it from the groove, which is convenient to operate and has stable reset and locking. During use, the positioning groove and the fitting part form a constraint, which significantly improves the resistance to transverse impact. 2. Furthermore, through the symmetrical design of the double-curvature surface and the continuous gradual curvature transition, the cheek pad is designed to be flexible and adaptable to the dynamic facial bones, which can both disperse the concentrated pressure in the cheekbone area and provide stable coverage in the jaw contact area. 3. Furthermore, the elastic compression component provides stability and smooth operation for the automatic reset of the push-to-unlock mechanism, while the flush design of the operation button with the end face of the stock achieves concealment and prevents accidental touch. Further or other beneficial effects will be discussed in the embodiments. Attached Figure Description

[0016] Figure 1 This utility model relates to an adjustable cheek rest structure; Figure 2 This is a schematic diagram of the stock structure of this utility model; Figure 3 This is a schematic diagram of the stock without the adjustable cheek rest structure of this utility model; Figure 4 This is a full sectional view of the stock of this utility model; Among them, 1-movable cheek rest, 11-guide groove, 12-positioning groove, 101-main body, 102-adjusting wing, 103-guide protrusion, 2-lateral limiting pin, 21-fitting part, 3-unlocking mechanism, 31-operation button, 32-elastic compression part, 301-linkage hole, 41-accommodating cavity, 42-guide rail, 43-support space, 44-waist-shaped hole, 45-guide groove. Detailed Implementation

[0017] 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.

[0018] The present invention will be further explained below with reference to the embodiments:

[0019] An adjustable cheek rest structure, please refer to Figure 1 This adjustable cheek rest structure is used to mount on the stock of a firearm or a replica firearm. It includes a movable cheek rest 1, a lateral limiting pin 2, and an unlocking mechanism 3. The movable cheek rest 1 is slidably fitted onto the outside of the stock. The movable cheek rest 1 has a through-type guide groove 11 extending vertically, and the sidewall of the guide groove 11 has several positioning grooves 12 arranged at preset intervals. The lateral limiting pin 2 passes through the stock, and its end is designed with a fitting part 21 that mates with the positioning grooves 12. Furthermore, the lateral limiting pin 2 can be adjusted by changing its position with different positioning grooves. The cheek rest height relative to the stock is adjusted by the cooperation of pins 12 and 12. To ensure that the lateral limiting pin 2 can be stably adjusted, the unlocking mechanism 3 in this embodiment is longitudinally movable inside the stock along the stock axis. The unlocking mechanism 3 has a linkage hole 301 that passes through the unlocking mechanism 3. The lateral limiting pin 2 passes through the linkage hole 301 and forms a contact engagement with the hole wall of the linkage hole 301. When the unlocking mechanism 3 in this embodiment is pressed by an external force, the pressure of the hole wall of the linkage hole 301 on the lateral limiting pin 2 forces the fitting part 21 to disengage from the current positioning groove 12. In this embodiment, the lateral limiting pin 2 and the unlocking mechanism 3 are interference-fitted. This prevents the lateral limiting pin 2 from moving during normal use and affecting the engagement effect between the fitting part 21 and the positioning groove 12. It also makes it easier to disassemble when the cheek rest structure needs to be removed.

[0020] In this embodiment, there are four positioning grooves 12. That is to say, the limiting pin of this application, together with the positioning grooves 12, can realize four-level adjustment of the cheek rest relative to the stock height, thereby adapting to the dynamic adjustment of the cheek rest under different shooting postures.

[0021] In this embodiment, the outer end face of the movable cheek rest 1, that is, the contact surface that fits against the human cheek during use, is a hyperbolic curved surface symmetrically distributed along the longitudinal axis. This hyperbolic curved surface transitions through a continuous gradient curvature. From a design perspective, the curved surface fits synchronously with the human cheekbone area and the jaw contact area, which is ergonomic. It should be noted that the cheek rest or gunstock structure involved in this application is not entirely used on real firearms. It can also be used on toys or prop firearms used in photography, videography, and theatrical performances. For theatrical performances, since actors may need to set up the firearms for a long time or multiple times to complete the performance and filming effects, a suitable cheek rest can reduce the fatigue of the user when setting up the firearm for actors who have not received scientific training. Of course, this application does not exclude the use of real firearms. On real firearms, the design of this application is more effective for soldiers who have received formal training.

[0022] A stock with an adjustable cheek rest structure, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 Including the adjustable cheek rest structure in Embodiment 1, the butt end of the stock in this embodiment has an inwardly opening receiving cavity 41. The receiving cavity 41 is used to receive the unlocking mechanism 3 of the adjustable cheek rest structure. The unlocking mechanism 3 is longitudinally arranged in the receiving cavity 41. Specifically, the unlocking mechanism 3 includes an operation button 31 and an elastic compression member 32. The elastic compression member 32 abuts between the front end face of the operation button 31 and the bottom inner wall of the receiving cavity 41. The elastic compression member 32 is specifically a compression spring. Furthermore, the front end of the operation button 31 is provided with an inwardly opening receiving groove, and the compression spring is partially disposed in the receiving groove. The bottom of the receiving cavity 41 is provided with a positioning protrusion, which is inserted into the compression spring. The receiving groove and the positioning protrusion work together to assist the compression spring in being positioned in the receiving cavity 41 without shifting.

[0023] The tail of the operation button 31 is flush with the tail end face of the stock. Since the stock is to rest against the user's shoulder, if the pressing end protrudes from the tail end face, the user will not only experience discomfort due to the reaction force of the protruding pressing end under the action of the compression spring, but may also force the fitting part 21 to disengage from the current positioning groove 12, thereby causing the cheek rest structure to disengage from the locked state of the stock height position, thus affecting the user's comfort. If the pressing section is recessed inward, it will not only affect the comfort when pressing (the thumb can insert more than in other settings), but also cause discomfort when the user rests against the stock, as the shoulder area will fill the recessed area.

[0024] Furthermore, the movable cheek rest 1 includes a main body 101 and a pair of adjusting wings 102 distributed on both sides of the main body 101. There are two guide grooves 11 mentioned above, which are symmetrically opened on the adjusting wings 102 on both sides of the main body 101. The double curvature surface mentioned above is set on the main body 101. Guide rails 42 matching the outer contour of the adjusting wings 102 are set on both sides of the stock. The adjusting wings 102 are fitted into the guide rails 42 to form a vertically movable limiting structure. In addition, a guide protrusion 103 is also provided on the side of the adjusting wings 102 facing the stock. A guide groove 45 is also provided on the corresponding stock. The guide protrusion 103 and the guide groove 45 cooperate with each other. The two guide structures make the entire guiding process more stable.

[0025] The stock is provided with a horizontally penetrating leverage space 43, which is located below the movable cheek rest 1. The leverage space 43 has a triangular cross-section (triangular overall but with rounded corners). The leverage space 43 provides space for the operator to insert their fingers. Based on the above configuration, the operator inserts their index and middle fingers into the leverage space 43, and then presses their thumb against the operation button 31, causing the operation button 31 to move inward. This allows the operator to adjust the relative position of the stock and the movable cheek rest 1 with one hand. In addition, the triangular cavity structure reduces the weight of the entire stock, and due to the stability of the triangle, the cavity does not reduce the overall structural strength of the stock.

[0026] A slotted hole 44 is provided through the stock, and a lateral limiting pin 2 passes through the slotted hole 44 to form a sliding pair. The slotted hole 44 is arranged parallel to the axial direction of the stock, allowing the lateral limiting pin 2 to move relative to the stock in the forward and backward directions. The diameter of the semicircular portion of the slotted hole 44 is the same as the diameter of the lateral limiting pin 2. Therefore, the slotted hole 44 restricts the upward and downward movement of the lateral limiting pin 2, so that the lateral limiting pin 2 can only move within the range defined by the slotted hole 44 in the forward and backward directions. This structure is designed to assist the movement of the lateral limiting pin 2 relative to the positioning groove 12. At the same time, due to the limited forward and backward movement, the engagement and disengagement between the fitting part 21 and the positioning groove 12 are smoother, reducing the possibility of ineffective engagement (i.e., misalignment).

[0027] To facilitate understanding, the various orientations in the embodiments of this application will be explained in detail. In terms of three-dimensional X, Y and Z axes, the vertical direction involved in this application refers to the Z-axis direction, the horizontal direction of the stock involved in this application refers to the Y-axis direction, and the longitudinal, axial or axis direction of the stock involved in this application refers to the X-axis direction. The above-mentioned directions are perpendicular to each other.

[0028] 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.

[0029] 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. An adjustable cheek rest structure, mounted on the stock of a firearm or a replica firearm, characterized in that, include: The movable cheek rest (1) is slidably fitted onto the outside of the stock. The movable cheek rest (1) has a through guide groove (11) in the vertical direction. The side wall of the guide groove (11) has a number of positioning grooves (12) arranged at a preset interval. A transverse limiting pin (2) is provided that extends transversely through the stock, and the end of the transverse limiting pin (2) is provided with a fitting part (21) that cooperates with the positioning groove (12). The unlocking mechanism (3) is longitudinally movable inside the stock along the axis of the stock. The unlocking mechanism (3) is provided with a linkage hole (301) that passes through the unlocking mechanism (3). The transverse limiting pin (2) passes through the linkage hole (301) and forms a contact fit with the hole wall of the linkage hole (301). When the unlocking mechanism (3) is pressed by an external force, the transverse limiting pin (2) is forced to disengage from the engagement with the current positioning groove (12) by the pressure of the hole wall of the linkage hole (301) on the locking pin.

2. The adjustable cheek rest structure according to claim 1, characterized in that, The contact surface between the active cheek patch (1) and the human cheek is a double curvature surface symmetrically distributed along the longitudinal axis. The double curvature surface is formed by a continuous gradual curvature transition to create a composite ergonomic surface that synchronously fits the cheekbone area and the jaw contact area of ​​the human face.

3. The adjustable cheek rest structure according to claim 1, characterized in that, The lateral limiting pin (2) is interference-fitted with the unlocking mechanism (3).

4. A gunstock with an adjustable cheek rest structure, characterized in that, The adjustable cheek rest structure includes any one of claims 1-3, wherein the butt end of the stock has an inwardly opening receiving cavity (41), and the unlocking mechanism (3) is longitudinally disposed within the receiving cavity (41).

5. A gunstock with an adjustable cheek rest structure according to claim 4, characterized in that, The unlocking mechanism (3) includes an operation button (31) and an elastic compression member (32), the elastic compression member (32) abutting between the front end face of the operation button (31) and the inner wall of the accommodating cavity (41).

6. A gunstock with an adjustable cheek rest structure according to claim 5, characterized in that, The pressing end of the operation button (31) is flush with the rear end face of the stock.

7. A gunstock with an adjustable cheek rest structure according to claim 4, characterized in that, The movable cheek rest (1) includes a main body (101) and a pair of adjustable wings (102) symmetrically distributed on both sides of the main body (101). The guide grooves (11) are respectively opened on the adjustable wings (102) on both sides. The stock is provided with guide rails (42) on both sides that match the outer contour of the adjustable wings (102). The adjustable wings (102) are fitted into the guide rails (42) to form a vertically movable limiting structure.

8. A gunstock with an adjustable cheek rest structure according to claim 4, characterized in that, The stock is provided with a horizontally penetrating leverage space (43), which is located below the movable cheek rest (1).

9. A gunstock with an adjustable cheek rest structure according to claim 4, characterized in that, The stock has a through-hole (44), and the transverse limiting pin (2) passes through the through-hole (44) to form a sliding pair. The through-hole (44) is arranged parallel to the axial direction of the stock so that the transverse limiting pin (2) can move relative to the front and rear directions of the stock.

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