TWI833625B - Modular bolt carrier group - Google Patents

Abstract

This invention reveals a modular bolt carrier group including a bolt carrier base and a bolt carrier cap, wherein: the bolt carrier base is a barrel-shaped or box-shaped shell containing a proximal end, a distal end, and a chamber partially covered by the shell located between the proximal end and the distal end; and the bolt carrier cap contains a baffle plate, and the bolt carrier cap can be attached to the distal end of the bolt carrier base and cover the chamber partly.

Description

Combined bolt unit

A bolt mechanism, especially a combined bolt mechanism.

Guns are the most common type of modern weapons and one of the common tools in the entertainment industry such as survival games. Guns can be classified according to different uses and functions, and different types of guns usually have their own unique designs and structures, and the bolt mechanism is one of the very important components of the gun. Different types of guns have different bolt designs. However, whether it is a pistol, rifle, submachine gun, shotgun or air gun, the bolt is usually designed to be integrally formed to ensure convenient manufacturing and structural sealing and rigidity to cope with the high pressure and reaction generated when the gun is fired. force.

However, the existing bolt mechanism design requires that the entire bolt mechanism be replaced when the bolt malfunctions, resulting in a significant increase in maintenance costs and a waste of materials. In addition, in order to ensure the durability and rigidity of the bolt, the thickness and weight of the bolt may be significantly increased, significantly increasing the amount of materials used, and increasing the weight of the gun, affecting operating comfort. In view of this, developing a modular bolt structure that can be assembled and disassembled has become an urgent development goal in related fields.

In order to solve the problems of high replacement cost of existing bolt carriers, the use of a large amount of raw materials and heavy weight, the present invention provides a combined bolt carrier assembly, which includes a bolt carrier and a bolt cover, wherein: the bolt carrier is a barrel A box-shaped or box-shaped casing, the casing includes a front end, a rear end and a And the housing part covers and defines a cavity between the rear ends; and the bolt cover includes a baffle, and the bolt cover is detachably fixedly connected to and covers the rear end of the bolt base. part of the cavity.

Wherein, the housing of the bolt base is box-shaped, the housing includes an air chamber opening and the front end opening and the rear end opening adjacent to the air chamber opening, and the rear end of the bolt base includes a first joint Mechanism; the bolt cover has a piece structure and is L-shaped. The piece body is integrally formed and connected by the baffle and a side piece, wherein the side piece is provided with a first joint mechanism corresponding to the first piece. The two joint mechanisms enable the baffle to completely cover the rear end opening of the bolt base when the bolt cover is combined with the bolt base, and the side panel can cover part of the air chamber opening.

Wherein, the first joint mechanism and the second joint mechanism are a corresponding sliding joint mechanism, and the sliding joint mechanism includes more than one groove and more than one strip-shaped protrusion corresponding to the groove, so that the gun The cover slides into and engages the rear end of the bolt carrier.

Wherein, the first joint mechanism and the second joint mechanism are closely combined to make the joint airtight.

Wherein, the rear end of the bolt base includes two first fixing holes, the bolt cover includes two second fixing holes, the first fixing hole and the second fixing hole are between the bolt base and the bolt After the covers are joined, they can correspond to each other in pairs.

Wherein, the bolt base includes two protruding bolt handle lugs outside the housing.

Wherein, the bolt base further includes a bolt retraction spring hole between the two bolt handle lugs and the housing, and the bolt retraction spring hole is a space parallel to the cavity. Penetrating the front end and the rear end of the bolt carrier.

Among them, the material of the gun cover is steel.

Among them, the material of the gun cover is high carbon steel.

Among them, the material of the bolt carrier is aluminum alloy.

As can be seen from the above description, the present invention has the following characteristics:

1. The combined bolt unit of the present invention can use the bolt cover as a sacrificial material. After repeated use and wear, only the bolt cover can be disassembled and replaced. It is not necessary to replace the entire bolt, which can reduce the need for replacement of the bolt due to wear and tear. costs and can save material resources.

2. The combined bolt unit of the present invention can improve the durability of the bolt simply by strengthening the material thickness and rigidity of the bolt cover. The bolt base can be made of lighter materials and its thickness can be reduced, so that the overall bolt is more durable. The weight is reduced and the materials required for manufacturing the gun can be reduced, thereby achieving the effect of lightweighting the gun and reducing costs.

3. The combined bolt action unit of the present invention can be used in various guns, and the bolt action can be replaced without modifying the design of the original gun, thereby achieving the effects of lightweighting the gun, extending the life of the gun, and reducing costs.

10: Gun unit

20: Bolt mount

21:First fixing hole

22: First joint mechanism

23: Bolt handle bump

24: Bolt back spring hole position

25: Air chamber opening

30: Bolt cover

31:Second fixing hole

32: Second joint mechanism

33:Block

34: Side panel

A:Rifle

B: Fire control component

C: Trigger

D: hammer

Figure 1 is a three-dimensional explosion schematic diagram of an embodiment of the present invention.

Figure 2 is a three-dimensional explosion schematic diagram of an embodiment of the present invention.

Figure 3 is a schematic three-dimensional appearance diagram of an embodiment of the present invention.

Figure 4 is a schematic three-dimensional appearance diagram of an embodiment of the present invention.

Figure 5 is a schematic diagram of the bolt cover sliding relative to the bolt base according to an embodiment of the present invention.

Figure 6 is a schematic diagram of the position of an embodiment of the present invention relative to a rifle.

Figure 7 is a partial schematic diagram of the position relative to the rifle when firing according to an embodiment of the present invention.

Figure 8 is a partial schematic diagram of the position relative to the rifle when loading according to an embodiment of the present invention.

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following drawings that are required to be used in the description of each embodiment are briefly introduced. Obviously, the drawings in the following description are only These are some examples or embodiments of the present invention. For those of ordinary skill in the art, the present invention can also be applied to other similar scenarios based on these drawings without exerting creative efforts. Unless obvious from the locale or otherwise stated, the same reference numbers in the figures represent the same structure or operation.

As shown in this invention and the claims, the words "a", "an", "an" or "the" do not specifically refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "include" and "include" only imply the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or apparatus may also include other steps or elements.

Flowcharts are used in the present invention to illustrate operations performed by the system according to embodiments of the present invention. It should be understood that preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. At the same time, you can add other operations to these processes, or remove a step or steps from these processes.

Please refer to FIGS. 1 to 5 , which are schematic three-dimensional views of an embodiment of a combined bolt action assembly 10 according to the present invention. The combined bolt unit 10 of the present invention includes a bolt base 20 and a bolt cover 30, wherein the bolt base 20 is a cylindrical or box-shaped housing, and the housing includes a front end, a rear end and a rear end. A cavity is located between the front end and the rear end and is partially covered and defined by the housing. The cavity is used to accommodate a firing pin structure, so that the combined bolt assembly 10 can strike the hammer with a hammer. When the bolt cover 30 or a gas gas fills the cavity, the firing pin structure moves toward the front end, thereby firing a bullet; and the bolt cover 30 includes a baffle 33, and the bolt cover 30 is detachably engaged. The cavity is located at the rear end of the bolt carrier 20 and partially covers it. After the combined bolt unit 10 is installed with a gun, the bolt cover 30 will be in contact with the gun when it is moved. One strike hammer contact.

Further, the rear end of the bolt base 20 includes a first engagement mechanism 22; and the bolt cover 30 includes a baffle 33 and a second engagement mechanism 32 corresponding to the first engagement mechanism 22, so that the gun The machine cover 30 is detachably fixedly connected to the rear end of the bolt base 20 and covers part of the cavity.

In one embodiment, the housing of the bolt base 20 is box-shaped, and the housing includes an air chamber opening 25 and the front end opening and the rear end opening adjacent to the air chamber opening 25. The bolt base 20 The rear end of 20 includes a first joint mechanism 22; the bolt cover 30 is generally a piece structure, including a baffle 33 and a side piece 34 that are integrally formed and connected, wherein the side piece 34 is provided with the first joint. A joint mechanism 22 corresponds to a second joint mechanism 32. When the bolt cover 30 is combined with the bolt base 20, the side piece 34 extends in the direction of the front end and the rear end and the blocking piece 33 protrudes from The rear end position of the side piece 34 makes the bolt cover 30 have an L shape, and the blocking piece 33 can completely cover the rear end opening of the bolt base 20 when the bolt cover 30 is combined with the bolt base 20 , and the side panel 34 can cover part of the air chamber opening 25 .

Preferably, the first engagement mechanism 22 and the second engagement mechanism 32 are a corresponding sliding engagement mechanism, and the sliding engagement mechanism includes more than one groove and more than one strip-shaped protrusion corresponding to the groove. , so that the bolt cover 30 can be slidably combined with the bolt base 20 . In one embodiment, the first engagement mechanism 22 is two parallel grooves extending along the rear edge of the housing, and the second engagement mechanism 32 is two parallel strip protrusions corresponding to the grooves. , so that the bolt cover 30 can slide into the rear end of the bolt base 20 and engage, as shown in Figures 4 and 5 .

In another embodiment, the first engaging mechanism 22 is two parallel strip protrusions extending along the rear end of the cavity, and the second engaging mechanism 32 is two parallel grooves corresponding to the groove. , so that the bolt cover 30 can slide into the rear end of the bolt base 20 and engage. Preferably, the first joint mechanism 22 of the bolt base 20 is tightly coupled with the second joint mechanism 32 of the bolt cover 30. In one embodiment, the corresponding groove and the strip-shaped protrusion are The combination makes the bolt base 20 and the bolt cover 30 tightly combined and makes the joint airtight. Such a sealed bolt can be applied to a gas gun bolt, so that the combined bolt unit 10 can be used as a cylinder at the same time, and the compressed gas that enters when the air gun is fired will not flow from the bolt base 20 to the bolt. The joint of the bolt cover 30 leaks.

Preferably, after the bolt base 20 and the bolt cover 30 are joined, a fixing mechanism is further used to fix the bolt base 20 and the bolt cover 30, so as to further ensure that the bolt cover 30 is firmly connected to the bolt cover 30. bolt action Seat 20 is engaged. Wherein, after the bolt base 20 and the bolt cover 30 are joined, the rear end of the bolt base 20 includes two first fixing holes 21, and the bolt cover 30 includes two holes corresponding to the first fixing holes 21. Two second fixing holes 31. The first fixing hole 21 and the second fixing hole 31 can correspond to each other after the bolt base 20 and the bolt cover 30 are joined. A perforation is formed between the machine cover 30 so that a bolt pin can penetrate all the first fixing holes 21 and the second fixing hole 31 and completely close the first fixing hole 21 and the second fixing hole 31 to securely combine the The bolt base 20 and the bolt cover 30 seal the hole, and the bolt pin can be used as a fixing pin for objects placed in the cavity. In one embodiment, the bolt pin is fixedly placed in the cavity and connected to one end of a spring.

The bolt base 20 further includes two bolt handle protrusions 23 on the outside of the housing on the opposite side of the air chamber opening 25. The bolt handle protrusions 23 are protrusions on the housing and can be connected with a gun. The hole of the machine connecting rod is engaged, so that the bolt carrier 20 is connected to the bolt connecting rod, and the bolt connecting rod drives the displacement movement of the combined bolt unit 10 in a gun to facilitate the movement of the gun. Smooth firing and reloading.

Further, the bolt base 20 further includes a bolt recoil spring hole 24 between the two bolt handle bumps 23 and the housing on the opposite side of the air chamber opening 25. The bolt recoil spring The hole 24 is a space parallel to the cavity. The bolt cover spring hole 24 penetrates the front end and the rear end of the bolt base 20 so that a recoil spring group can pass through the bolt cover. The recoil spring hole 24 moves in translation relative to the combined bolt assembly 10, and the recoil spring assembly can absorb, slow down or eliminate the recoil and reaction force generated after the firearm fires bullets.

Please refer to FIG. 6 , which is a schematic diagram of the relative position of the combined bolt action group 10 of the present invention in a rifle A in one embodiment. The combined bolt unit 10 is located in the upper receiver of the rifle A. Please refer to FIG. 7 and FIG. 8 together. In this embodiment, when the rifle A moves, the relative position of the combined bolt assembly 10 and the fire control component B of the rifle A is schematically shown. FIG. 7 is a schematic diagram of when a user presses the button After the trigger C is pulled down, the hammer D hits the combined bolt unit 10. A partial schematic diagram of the firing action. When firing, the hammer D will strike the block 33 of the bolt cover 30 of the combined bolt group 10 . Figure 8 shows the Schematic diagram of the position of the fire control component B relative to the combined bolt unit 10 during the loading process of the rifle A after firing. At this time, the combined bolt assembly 10 will slide against the hammer D in the fire control assembly B, causing the bolt covers 30 to contact and displace, wherein the hammer D will contact the bolt cover 30 The side panels 34 slide. In most semi-automatic or fully automatic rifles, the rifle A will quickly move the combined bolt group 10 toward the rear end after being fired, so that the hammer D can be reloaded and fired again, resulting in the hammer D being in contact with the combined bolt unit 10. The bolt group 10 slides quickly with relative friction. After the bolt cover 30 is deformed or scratched due to repeated impacts and sliding by the hammer D, due to the modular design of the combined bolt unit 10, the bolt cover 30 can be disassembled from the bolt base 20 It can be replaced without replacing the entire bolt unit.

Preferably, in order to avoid or slow down the deformation or damage of the bolt cover 30 caused by the heavy impact of the hammer D when the rifle A is fired and the friction of the hammer D when loading, the material of the bolt cover 30 is selected. steel. Preferably, the bolt cover 30 is made of high carbon steel to ensure that the bolt cover 30 is stronger and more wear-resistant, thereby reducing damage to the bolt cover 30 and extending the life of the bolt cover 30 .

Since the bolt base 20 will not come into contact with the hammer D in the fire control assembly B during shooting, lighter materials can be used to reduce the weight of the rifle A and reduce the difficulty of processing. Preferably, the bolt base 20 is made of aluminum alloy.

As can be seen from the foregoing description, the present invention achieves the following effects:

1. The combined bolt unit of the present invention can use the bolt cover as a sacrificial material. After repeated use and collision with the hammer, only the bolt cover can be disassembled and replaced. It is not necessary to replace the entire bolt, which can reduce the number of bolts. The cost of replacement due to wear and tear can be reduced and material resources can be saved.

2. The combined bolt unit of the present invention can improve the durability of the bolt simply by strengthening the material thickness and rigidity of the bolt cover. The bolt base can be made of lighter materials and its thickness can be reduced, so that the overall bolt is more durable. The weight is reduced and the materials required for manufacturing the gun can be reduced, thereby achieving the effect of lightweighting the gun and reducing costs.

3. The combined bolt action unit of the present invention can be used in various guns, and the bolt action can be replaced without modifying the design of the original gun, thereby achieving the effects of lightweighting the gun, extending the life of the gun, and reducing costs.

It should be noted that, based on the explanation and elaboration of the above description, those skilled in the art to which this disclosure belongs can also make changes and modifications to the above embodiments. Therefore, the present disclosure is not limited to the specific implementations disclosed and described above, and some equivalent modifications and changes to the present disclosure should also be within the protection scope of the claims of the present disclosure. In addition, although certain terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the invention.

10: Gun unit

20: Bolt mount

21:First fixing hole

22: First joint mechanism

23: Bolt handle bump

24: Bolt back spring hole position

25: Air chamber opening

30: Bolt cover

31:Second fixing hole

32: Second joint mechanism

33:Block

34: Side panel

Claims (10)

A combined bolt unit, which includes a bolt base and a bolt cover, wherein: the bolt base is a cylindrical or box-shaped housing, and the housing includes a front end, a rear end, and a front end and a rear end. The housing partially covers and defines a cavity between the rear ends, wherein the rear end of the bolt base includes a first engagement mechanism; and the bolt cover is a one-piece structure that includes a baffle and a The first joint mechanism corresponds to a second joint mechanism, so that the bolt cover is detachably fixedly joined to the rear end of the bolt base and covers at least part of the cavity. The combined bolt unit as claimed in claim 1, wherein the housing of the bolt base is box-shaped, and the housing includes an air chamber opening and the front end opening and the rear end opening adjacent to the air chamber opening; The bolt cover is L-shaped, and the piece body is integrally formed and connected by the blocking piece and a side piece, wherein the side piece is provided with the second joint mechanism, so that when the bolt cover is combined with the bolt base The blocking piece can completely cover the rear end opening of the bolt base, and the side piece can cover part of the air chamber opening. The combined bolt unit as claimed in claim 1 or 2, wherein the first engagement mechanism and the second engagement mechanism are a corresponding sliding engagement mechanism, and the sliding engagement mechanism includes more than one groove and a groove connected to the groove. The groove corresponds to one or more strip-shaped protrusions, so that the bolt cover can slide into the rear end of the bolt base and engage. The combined bolt unit as claimed in claim 3, wherein the first joint mechanism and the second joint mechanism are tightly coupled to make the joint airtight. The combined bolt unit as claimed in claim 4, wherein the rear end of the bolt base includes two first fixing holes, the bolt cover includes two second fixing holes, and the first fixing holes are connected with the second The fixing holes can correspond to each other in pairs after the bolt base and the bolt cover are joined. The combined bolt unit as claimed in claim 3, wherein the bolt base includes two protruding bolt handle lugs outside the housing. The combined bolt unit as described in claim 6, wherein the bolt base further includes a bolt retraction spring hole between the two bolt handle lugs and the housing, and the bolt retraction spring hole The position is a space parallel to the cavity and passing through the front end and the rear end of the bolt base. The combined bolt unit as claimed in claim 3, wherein the bolt cover is made of steel. The combined bolt unit as described in claim 8, wherein the bolt cover is made of high carbon steel. The combined bolt unit as described in claim 3, wherein the bolt base is made of aluminum alloy.

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