Sealing mechanism for bullet nest and gun barrel of revolver

Abstract

The utility model discloses a sealing mechanism for a bullet nest and a gun barrel of a revolver in the field of firearms, which comprises a main body frame, the bullet nest and the gun barrel, a sealing nozzle is arranged at one end, facing the gun barrel, of each chamber on the bullet nest, a sealing sleeve is sleeved at one end, close to the bullet nest, of the gun barrel in a sliding manner, and a transmission mechanism is arranged between the sealing sleeve and a trigger. The transmission mechanism can promote the sealing sleeve to slide in the direction close to the bullet nest until the trigger reaches the shooting triggering position, the sealing sleeve is in sealed butt joint with the sealing nozzle, and when the trigger returns, the transmission mechanism enables the sealing sleeve to be separated from the sealing nozzle. A sealing nozzle is arranged at the front end of each chamber of a bullet nest, a sealing sleeve is arranged at the rear end of a gun barrel, and a transmission mechanism is arranged between the sealing sleeve and a trigger, so that when the trigger is pulled, the sealing sleeve can be driven by the transmission mechanism to slide along the gun barrel and is in sealing butt joint with the sealing nozzles, and therefore sealing connection between the bullet nest and the gun barrel is achieved, and the shooting distance is increased; and the gun barrel is of a fixed structure, so that the shooting precision is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of firearms, and in particular to a sealing mechanism for the cylinder and barrel of a revolver. Background Technology

[0002] The revolver is a mature light weapon used by the military and police. Its specific structure and firing principle will not be elaborated here. The main problem with current revolvers is that, because the cylinder rotates during firing and reloading, the cylinder and barrel are in a disengaged state with a certain gap. During firing, when the bullet is struck and ignited, the explosive gas generated by the internal propellant leaks through the gap between the cylinder and the barrel, thereby reducing the impact force on the bullet and affecting the shooting distance.

[0003] Patent document CN105841547A discloses a novel gas-tight high-performance revolver. Its main feature is a movable vector barrel housed within a fixed barrel. When the trigger is pulled, a lever system moves the vector barrel backward to abut against the front of the magazine, sealing the magazine and barrel. Its main drawback is that the movable vector barrel allows the bullet to move and wobble during firing, affecting shooting accuracy. Utility Model Content

[0004] To overcome the aforementioned shortcomings of existing revolvers, the technical problem to be solved by this utility model is to provide a sealing mechanism for the cylinder and barrel of a revolver that has good airtightness and does not affect shooting accuracy, and is limited to military or police use.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] The sealing mechanism of the cylinder and barrel of a revolver includes a main frame, a cylinder, and a barrel. Each chamber of the cylinder has a sealing nozzle at the end facing the barrel. A sealing sleeve is fitted onto the end of the barrel near the cylinder, and the inner wall of the sealing sleeve is slidably connected to the outer wall of the barrel. The mechanism also includes a transmission mechanism, which is mounted on the main frame and connected between the sealing sleeve and the trigger of the revolver. When the trigger is pulled, the transmission mechanism causes the sealing sleeve to slide towards the cylinder and seals the sealing nozzle before the bullet is fired. When the trigger returns to its original position, the transmission mechanism causes the sealing sleeve to move away from the cylinder and disengage from the sealing nozzle.

[0007] Furthermore, the transmission mechanism includes a sliding rod and a connecting rod. A sleeve is provided on the main frame located in front of the trigger. The sliding rod is slidably disposed in the sleeve in the front-back direction. A first spring is provided between the front end of the sliding rod and the front end of the sleeve. The connecting rod connects the front end of the sliding rod and the sealing sleeve. A first driving block is provided at the front end of the trigger. A first driving inclined surface is provided on the first driving block. The sliding rod compresses the first spring backward so that the connecting block at its rear end slides and engages with the first driving inclined surface. When the trigger is pulled, the first driving block causes the sliding rod to move backward, compressing the first spring, and at the same time, the sealing sleeve is moved backward through the connecting rod.

[0008] Furthermore, an auxiliary rod is provided between the connecting rod and the trigger. The connecting rod has a groove in the middle, which is an oblique groove with its upper end inclined towards the breech. The main frame has a vertical guide groove in the corresponding moving area of ​​the connecting rod. The front end of the auxiliary rod is slidably connected to both the groove and the vertical guide groove through a protrusion. The rear end of the auxiliary rod is hinged to the hinge shaft at the front end of the first drive block. A second spring is provided between the middle of the auxiliary rod and the main frame. When the first drive block drives the sliding rod to move backward, the auxiliary rod drives the connecting rod to move backward synchronously through the protrusion and compresses the second spring.

[0009] Furthermore, the first driving ramp includes a transition section and a driving section. The rear end of the auxiliary rod is provided with a strip-shaped hole, and the hinge shaft at the front end of the first driving block slides through the strip-shaped hole. During the initial stroke of pulling the trigger, the transition section of the first driving ramp contacts the connecting block, and the hinge shaft slides from the front end of the strip-shaped hole to the rear end without moving the sliding rod and the connecting rod. During the subsequent stroke of pulling the trigger, the driving section of the first driving ramp contacts the connecting block again, and at the same time, the hinge shaft contacts the rear end of the strip-shaped hole, and moves the sliding rod and the connecting rod backward as the trigger rotates.

[0010] Furthermore, the connecting rod has a sleeve at one end connected to the sealing sleeve. Two oblique guide grooves, penetrating the sleeve and not parallel to the sleeve's axis in length, are provided on opposite sides of the sleeve. A limiting part is provided at the end of the oblique guide groove near the front end of the sleeve. The two oblique guide grooves are symmetrically arranged around the sleeve's axis. The main frame has a sliding part that slides with the sleeve. A limiting oblique groove aligned with the two oblique guide grooves is provided on the sliding part. An anti-rotation groove is provided at the end of the limiting oblique groove near the breech. The sealing sleeve is slidably and rotatably disposed inside the sleeve. A limiting post is provided on each side of the sealing sleeve. The limiting post passes through the oblique guide grooves on both sides and slides with the limiting oblique groove. During the movement and rotation of the sealing sleeve driven by the sleeve, when the limiting post simultaneously enters the limiting part of the oblique guide groove and the anti-rotation groove of the limiting oblique groove, the sealing sleeve is precisely sealed and connected to the sealing nozzle.

[0011] Furthermore, the transmission mechanism includes a sliding block and a first drive rod. A sliding frame is provided on the main frame in front of the trigger. The sliding block is slidably disposed within the sliding frame in the front-back direction. A third spring is provided between the front end of the sliding block and the front end of the sliding frame. An arc-shaped block is provided at the rear end of the sliding block. A sliding inclined surface is provided below the middle of the sliding block. A first wedge-shaped block is provided at the lower end of the sealing sleeve. A tension spring is provided between the sealing sleeve and the main frame. The first drive rod is slidably disposed on the sliding frame in the up-down direction. A first guide block is provided at its upper end, which is slidably connected to the inclined surface of the first wedge-shaped block. A guide block is provided at its lower end, which is slidably connected to the sliding frame. The sliding ramp of the moving block is connected to the groove. A fourth spring is provided between the middle of the first drive rod and the main frame. A second drive block is provided at the front end of the trigger. A second drive ramp is provided at the front end of the second drive block. The arc-shaped block at the rear end of the sliding block abuts against the second drive ramp under the action of the third spring. When the trigger is pulled, the second drive block causes the sliding block to move forward, compressing the third spring. Under the action of the sliding ramp, the first drive rod moves downward, compressing the fourth spring. The first drive rod drives the sealing sleeve to move backward through the ramp of the first guide block and the first wedge block, while stretching the tension spring.

[0012] Furthermore, the transmission mechanism also includes a pull rod and a second drive rod. The pull rod is slidably mounted on the main frame above the magazine in the front-back direction. The front end of the pull rod is fixedly connected to the sealing sleeve, and a second wedge block is provided below the rear end. The second drive rod is slidably mounted on the main frame behind the magazine in the up-down direction. The upper end of the second drive rod is provided with a second guide block that is slidably connected to the inclined surface of the second wedge block, and the lower end is provided with a sliding column. A third drive block is provided at the rear end of the trigger. The sliding column is slidably connected to the guide groove on the third drive block. When the trigger is pulled, the third drive block moves the second drive rod upward through the guide groove. The second drive rod drives the sealing sleeve to move backward through the cooperation of the inclined surface of the second guide block and the second wedge block.

[0013] Furthermore, it also includes a locking rotating plate, which is fitted and coaxially rotated with the trigger. The second drive block and the third drive block are respectively located at the front and rear ends of the locking rotating plate. The front of the locking rotating plate is provided with a fan-shaped groove, and the back of the trigger is provided with a fan-shaped protrusion embedded in the fan-shaped groove. The central angle corresponding to the fan-shaped protrusion is smaller than the central angle corresponding to the fan-shaped groove. In the natural state, the front end of the fan-shaped protrusion abuts against the front end of the fan-shaped groove. When the trigger is pulled, the rear end of the fan-shaped protrusion abuts against the rear end of the fan-shaped groove after the trigger moves to the right for a certain distance. Then the locking rotating plate rotates synchronously with the trigger.

[0014] Furthermore, the lower end of the locking plate is also provided with a locking hook. When the trigger is rotated to the point where the rear end of the fan-shaped protrusion abuts against the rear end of the fan-shaped groove, the locking hook overlaps with the hook on the trigger.

[0015] Furthermore, the sealing sleeve is funnel-shaped at the end facing the magazine, and its inner wall is provided with multiple rings of inner sealing teeth. The barrel is provided with a conical section at the end near the magazine, and the outer wall of the conical section is provided with multiple rings of first outer sealing teeth. The sealing nozzle is frustoconical at the end facing the barrel, and its outer wall is provided with multiple rings of second outer sealing teeth. When the sealing sleeve and the sealing nozzle are tightly connected, the first and second outer sealing teeth abut against the inner sealing teeth one by one.

[0016] The beneficial effects of this utility model are as follows: by setting a sealing nozzle at the front end of each chamber of the magazine, setting a sealing sleeve at the rear end of the barrel, and setting a transmission mechanism between the sealing sleeve and the trigger, when the trigger is pulled, the transmission mechanism can drive the sealing sleeve to slide along the barrel and seal with the sealing nozzle, thereby achieving a sealed connection between the magazine and the barrel, increasing the shooting distance, and the barrel is a fixed structure, which does not affect the shooting accuracy. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of Scheme 1 of this utility model;

[0018] Figure 2 This is an exploded view of the first embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of Scheme 2 of this utility model;

[0020] Figure 4 This is an exploded view of the second embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the missile pod of this utility model;

[0022] Figure 6 This is a cross-sectional view of the sealing sleeve and sealing nozzle of this utility model.

[0023] The markings in the diagram are as follows: 110-sliding rod, 111-connecting block, 120-connecting rod, 121-slide groove, 130-first spring, 140-auxiliary rod, 141-protrusion, 142-strip hole, 150-second spring, 160-sleeve, 161-sloping guide groove, 162-limiting part, 210-sliding block, 211-arc block, 212-sliding inclined surface, 220-first driving rod, 221-first guide block, 222-groove, 223-fourth spring, 230-third spring, 310-pull rod, 311-second wedge block, 320-second driving rod, 321-second guide block, 322-sliding column, 400-main frame, 410-sleeve, 420-sliding frame, 430-sliding part. 431-Limiting groove, 432-Anti-rotation groove, 440-Vertical guide groove, 500-Cylinder, 510-Sealing nozzle, 511-Second outer sealing tooth, 600-Barrel, 610-Conical section, 611-First outer sealing tooth, 700-Sealing sleeve, 710-Limiting post, 720-First wedge block, 730-Tension spring, 740-Inner sealing tooth, 800-Trigger, 810-First drive block, 820-First drive ramp, 821-Transition section, 822-Drive section, 830-Hinge shaft, 840-Fan-shaped protrusion, 910-Locking rotating plate, 911-Fan-shaped groove, 912-Locking hook, 920-Second drive block, 921-Second drive ramp, 930-Third drive block, 931-Guide groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] It should be noted that if this utility model contains directional indicators such as up, down, left, right, front, and back, these terms are used to describe the relative positional relationships between components and are not specific references to the absolute positions of the components or the relationships between them. They are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly. If this utility model contains terms related to quantity such as "many," "multiple," or "several," these terms specifically refer to two or more.

[0026] like Figure 1As shown, the sealing mechanism for the cylinder and barrel of a revolver provided by this utility model includes a main frame 400, a cylinder 500, and a barrel 600. Each chamber of the cylinder 500 has a sealing nozzle 510 at its end facing the barrel 600. A sealing sleeve 700 is fitted onto the end of the barrel 600 near the cylinder 500, and the inner wall of the sealing sleeve 700 is slidably connected to the outer wall of the barrel 600. The mechanism also includes a transmission mechanism, which is mounted on the main frame 400 and connected between the sealing sleeve 700 and the trigger 800 of the revolver. The sealing nozzle 510 and the cylinder 500 are integrally formed. Compared to traditional revolvers, the main frame 400 of this application has an additional structure between the front of the trigger 800 and the rear of the barrel 600 for mounting the sealing sleeve 700 and the transmission mechanism. A sliding seal can be achieved between the sealing sleeve 700 and the barrel 600 by using a ceramic fiber gasket. The working process of this utility model is as follows: When the trigger 800 is pulled, the transmission mechanism causes the sealing sleeve 700 to slide towards the cylinder 500, and before the bullet is fired, the sealing sleeve 700 seals and engages with the sealing nozzle 510, ensuring that the chamber of the cylinder 500 and the barrel 600 are sealed when the bullet is fired, thereby preventing gas leakage and increasing the firing range; after firing, when the trigger 800 returns to its original position, the transmission mechanism moves in the opposite direction, causing the sealing sleeve 700 to move away from the cylinder 500 and disengage from the sealing nozzle 510. This cycle ensures that the sealing sleeve 700 engages with one sealing nozzle 510 each time it is fired, and the sealing sleeve 700 retracts after firing, without affecting the rotation of the cylinder 500 for the next firing.

[0027] To ensure a proper seal between the sealing sleeve 700, the barrel 600, and the sealing nozzle 510, the preferred embodiment of this invention is as follows: Figure 6 As shown, the sealing sleeve 700 is flared at the end facing the magazine 500, and its inner wall is provided with multiple rings of inner sealing teeth 740. The barrel 600 is provided with a conical section 610 at the end near the magazine 500, and the outer wall of the conical section 610 is provided with multiple rings of first outer sealing teeth 611. The sealing nozzle 510 is frustoconical at the end facing the barrel 600, and its outer wall is provided with multiple rings of second outer sealing teeth 511. When the sealing sleeve 700 and the sealing nozzle 510 are tightly connected, the first outer sealing teeth 611 and the second outer sealing teeth 511 are all in one-to-one contact with the inner sealing teeth 740. This eliminates the need to consider the sliding seal between the sealing sleeve 700 and the barrel 600. Instead, the sealing sleeve 700 is sealed to the barrel 600 and the sealing nozzle 510 through a multi-layer labyrinth sealing structure formed by the inner sealing tooth 740, the first outer sealing tooth 611, and the second outer sealing tooth 511. Compared with the existing technology that only uses the docking method between the barrel and the cylinder end face, this practical solution can significantly improve the sealing effect between the barrel 600 and the cylinder 500.

[0028] For the transmission mechanism, this utility model provides the following two embodiments:

[0029] Example 1:

[0030] like Figure 2 As shown, the transmission mechanism includes a sliding rod 110 and a connecting rod 120. A sleeve 410 is provided on the main frame 400 located in front of the trigger 800. The sliding rod 110 is slidably disposed within the sleeve 410 in the front-rear direction. A first spring 130 is provided between the front end of the sliding rod 110 and the front end of the sleeve 410. The connecting rod 120 connects the front end of the sliding rod 110 and the sealing sleeve 700. A first driving block 810 is provided at the front end of the trigger 800. A first driving inclined surface 820 is provided on the first driving block 810. The sliding rod 110 compresses the first spring 130 backward so that its rear connecting block 111 slides and engages with the first driving inclined surface 820. The sliding direction of the sliding rod 110 is preferably consistent with the length direction of the barrel 600 so as to smoothly drive the sealing sleeve 700 to slide. Its operation process is as follows: In the initial state, the sealing sleeve 700 is located away from the cylinder 500. When the trigger 800 is pulled, the first drive block 810 rotates downward. Through the sliding connection between the first drive inclined surface 820 and the connecting block 111, the sliding rod 110 is moved backward, compressing the first spring 130. The connecting rod 120 moves with the sliding rod 110, driving the sealing sleeve 700 to move backward until it mates with the sealing nozzle 510. After the trigger 800 is released, the first spring 130 returns to its original position, causing the sliding rod 110 to move forward, so that the sealing sleeve 700 is disengaged from the sealing nozzle 510.

[0031] Considering the potentially large torque that the connecting rod 120 may experience during movement, a preferred embodiment is an auxiliary rod 140 provided between the connecting rod 120 and the trigger 800. The connecting rod 120 has a groove 121 in its middle section, which is an inclined groove with its upper end tilted towards the breech 500. The main frame 400 has a vertical guide groove 440 within the movable area of ​​the connecting rod 120. The front end of the auxiliary rod 140 is slidably connected to both the groove 121 and the vertical guide groove 440 via a protrusion 141. The rear end of the auxiliary rod 140 is hinged to the hinge shaft 830 at the front end of the first drive block 810. A second spring 150 is provided between the middle of the auxiliary rod 140 and the main frame 400. The auxiliary rod 140 can be configured as an arc shape to avoid occupying too much space in front of the trigger 800. When the trigger is pulled, the protrusion 141 at the upper end of the auxiliary rod 140 slides downward along the vertical guide groove 440. Simultaneously, the engagement of the protrusion 141 with the slide groove 121 causes the connecting rod 120 to move closer to the cartridge 440, thereby improving the stability of the connecting rod 120's operation. Additionally, the auxiliary rod 140 also provides some tension to the connecting rod 120, which helps increase the clamping force between the sealing sleeve 700 and the sealing nozzle 510, ensuring a good seal. The transmission connection between the auxiliary rod 140, the connecting rod 120, and the trigger 800 requires precise design to ensure that when the first drive block 810 drives the sliding rod 110 to move backward, the auxiliary rod 140 can synchronously drive the connecting rod 120 to move backward via the protrusion 141, allowing them to work in synergy and avoiding problems such as movement jamming or uneven force on the connecting rod 120 due to asynchrony. During the movement of the auxiliary rod 140, the second spring 150 is compressed. After the trigger 800 is released, the second spring 150 resets the auxiliary rod 140.

[0032] Furthermore, since the cylinder 500 rotates simultaneously when the trigger 800 is pulled, until the chamber aligns with the barrel 600, the transmission mechanism needs to prevent interference between the sealing sleeve 700 and the sealing nozzle 510 during the rotation of the cylinder 500. A specific solution is to increase the stroke of the sealing sleeve 700. When the trigger 800 moves from its initial position to the position where the cylinder 500 has rotated, the sealing sleeve 700 is just in front of the sealing nozzle 510. Then, with the inertia of pulling the trigger 800, the sealing sleeve 700 moves backward a certain distance to seal and engage with the sealing nozzle 510. Considering the compactness of the structure, this invention provides a preferred embodiment, such as... Figure 2As shown, the first driving inclined surface 820 includes a transition section 821 and a driving section 822. The rear end of the auxiliary rod 140 is provided with a strip hole 142, and the hinge shaft 830 at the front end of the first driving block 810 slides through the strip hole 142. During the initial stroke of trigger 800, that is, from the initial position to the rotation of the magazine 500 into position, the transition section 821 of the first drive ramp 820 contacts the connecting block 111, and at the same time, the hinge shaft 830 slides from the front end to the rear end of the slot 142. During this process, the first drive block 810 does not drive the sliding rod 110 and the connecting rod 120 to move. At the critical point when the magazine 500 is rotated into position, the connecting block 111 reaches the connection between the transition section 821 and the drive section 822. At the same time, the hinge shaft 830 contacts the rear end of the slot 142. During the subsequent stroke of trigger 800, that is, from the rotation of the magazine 500 into position to the hammer hitting the bullet, the drive section 822 of the first drive ramp 820 and the hinge shaft 830 drive the sliding rod 110 and the connecting rod 120 to move backward, and seal the sealing sleeve 700 and the sealing nozzle 510 before the hammer hits the bullet.

[0033] In addition, when the airflow generated after the bullet is fired enters the space formed by the sealing sleeve 700 and the sealing nozzle 510, it will generate a forward impact force on the sealing sleeve 700, thereby impacting the transmission mechanism. Although the auxiliary rod 140 can provide some support, it is still not safe enough. Therefore, a further solution is to provide a sleeve 160 at the end of the connecting rod 120 connected to the sealing sleeve 700. Each of the two opposite sides of the sleeve 160 is provided with an oblique guide groove 161 that passes through the sleeve 160 and whose length direction is not parallel to the axis of the sleeve 160. A limiting part 162 is provided at the end of the oblique guide groove 161 near the front end of the sleeve 160. The two oblique guide grooves 161 are symmetrically arranged around the axis of the sleeve 160. The main frame 400 is provided with a sliding part 430 that is slidably connected to the sleeve 160. The sliding part 430 is provided with a limiting oblique groove 431 that is aligned with the two oblique guide grooves 161. An anti-rotation groove 432 is provided at the end of the limiting oblique groove 431 near the crater 500. The sealing sleeve 700 is slidably and rotatably disposed inside the sleeve 160. A limiting post 710 is provided on each side of the sealing sleeve 700. The limiting post 710 passes through the oblique guide grooves 161 on both sides and is slidably connected to the limiting oblique groove 431. After the trigger 800 is pulled, the sleeve 160 moves backward with the connecting rod 120. With the cooperation of the limiting post 710, the inclined guide groove 161, and the limiting inclined groove 431, the sealing sleeve 700 moves along the axis of the sleeve 160 and rotates around it. When the limiting post 710 simultaneously enters the limiting part 162 of the inclined guide groove 161 and the anti-rotation groove 432 of the limiting inclined groove 431, the limiting post 710 will be stuck in the anti-rotation groove 432, and the sealing sleeve 700 will be perfectly sealed and connected with the sealing nozzle 510. The groove surfaces on both sides of the anti-rotation groove 432 are perpendicular to the axis of the sliding part 430, thus providing axial limiting for the limiting post 710 located therein. The impact force generated on the sealing sleeve 700 when the bullet is fired will be transmitted to the sliding part 430 of the main frame 400 through the limiting post 710, thereby preventing impact on the transmission mechanism.

[0034] Example 2:

[0035] like Figure 3 , Figure 4As shown, the transmission mechanism includes a sliding block 210 and a first drive rod 220. A sliding frame 420 is provided on the main frame 400 located in front of the trigger 800. The sliding block 210 is slidably disposed within the sliding frame 420 in the front-rear direction. A third spring 230 is provided between the front end of the sliding block 210 and the front end of the sliding frame 420. An arc-shaped block 211 is provided at the rear end of the sliding block 210. A sliding inclined surface 212 is provided below the middle of the sliding block 210. A first wedge-shaped block 720 is provided at the lower end of the sealing sleeve 700. A tension spring 730 is provided between the sealing sleeve 700 and the main frame 400. The drive rod 220 is slidably mounted on the sliding frame 420 in the vertical direction. Its upper end is provided with a first guide block 221 that is slidably connected to the inclined surface of the first wedge block 720, and its lower end is provided with a groove 222 that is slidably connected to the sliding inclined surface 212 of the sliding block 210. A fourth spring 223 is provided between the middle of the first drive rod 220 and the main frame 400. The front end of the trigger 800 is provided with a second drive block 920, and the front end of the second drive block 920 is provided with a second drive inclined surface 921. The arc-shaped block 211 at the rear end of the sliding block 210 abuts against the second drive inclined surface 921 under the action of the third spring 230. Its operation is as follows: In the initial state, the sealing sleeve 700 is located away from the cylinder 500 under the action of the tension spring 730. When the trigger 800 is pulled, the second drive block 920 causes the sliding block 210 to move forward, compressing the third spring 230, and under the action of the sliding inclined surface 212, the first drive rod 220 moves downward, compressing the fourth spring 223. The first drive rod 220 drives the sealing sleeve 700 to move backward through the inclined surface cooperation of the first guide block 221 and the first wedge block 720, while stretching the tension spring 730. When the trigger 800 is released, the sliding block 210 is reset under the action of the third spring 230, the first drive rod 220 is reset under the action of the fourth spring 223, and the sealing sleeve 700 is reset under the action of the tension spring 730.

[0036] To increase the clamping force of the transmission mechanism on the sealing sleeve 700, and to resist the impact force from the sealing sleeve 700, such as Figure 4As shown, the transmission mechanism further includes a pull rod 310 and a second drive rod 320. The pull rod 310 is slidably mounted on the main frame 400 above the magazine 500 in the front-back direction. The front end of the pull rod 310 is fixedly connected to the sealing sleeve 700, and a second wedge block 311 is provided below the rear end. The second drive rod 320 is slidably mounted on the main frame 400 behind the magazine 500 in the vertical direction. The upper end of the second drive rod 320 is provided with a second guide block 321 that is slidably connected to the inclined surface of the second wedge block 311, and the lower end is provided with a sliding column 322. The rear end of the trigger 800 is provided with a third drive block 930, and the sliding column 322 is slidably connected to the guide groove 931 on the third drive block 930. When the trigger 800 is pulled, the third drive block 930 moves the second drive rod 320 upward through the guide groove 931. The second drive rod 320 drives the sealing sleeve 700 to move backward through the cooperation of the second guide block 321 and the inclined surface of the second wedge block 311. When designing the structure, it is necessary to ensure that the movement of the sealing sleeve 700 driven by the pull rod 310 is completely synchronized with the movement of the sealing sleeve 700 driven by the first drive rod 220. This will enable a synergistic effect and increase the clamping force on the sealing sleeve 700. In addition, the front and rear sides of the first drive rod 220 and the second drive rod 320 are supported on the main frame 400 to ensure that they can withstand the impact force from the sealing sleeve 700.

[0037] Similarly, to avoid interference between the sealing sleeve 700 and the sealing nozzle 510 when the cylinder 500 rotates, a locking rotating plate 910 can be added. The locking rotating plate 910 is fitted with the trigger 800 and rotates coaxially. The second drive block 920 and the third drive block 930 are respectively set at the front and rear ends of the locking rotating plate 910. The front of the locking rotating plate 910 is provided with a fan-shaped groove 911, and the back of the trigger 800 is provided with a fan-shaped protrusion 840 embedded in the fan-shaped groove 911. The central angle corresponding to the fan-shaped protrusion 840 is smaller than the central angle corresponding to the fan-shaped groove 911. In its natural state, the front end of the fan-shaped protrusion 840 abuts against the front end of the fan-shaped groove 911. When the trigger 800 is pulled, the trigger 800 moves to the right for a certain distance before the rear end of the fan-shaped protrusion 840 abuts against the rear end of the fan-shaped groove 911. This distance is from the initial state to the state where the cylinder 500 is rotated into place. Afterward, as the trigger 800 rotates, the locking plate 910 rotates synchronously, realizing the docking process between the sealing sleeve 700 and the sealing nozzle 510.

[0038] Furthermore, to prevent the trigger 800 from disengaging from the locking plate 910, a locking hook 912 is provided at the lower end of the locking plate 910. When the trigger 800 rotates to the point where the rear end of the fan-shaped protrusion 840 abuts against the rear end of the fan-shaped groove 911, the locking hook 912 overlaps with the hook on the trigger 800. Subsequently, when the trigger 800 is pulled, the locking hook 912 can be pulled at the same time to ensure the stable operation of the transmission mechanism.

Claims

1. A sealing mechanism of a revolver handgun cartridge chamber and a barrel, comprising a main body frame (400), a cartridge chamber (500) and a barrel (600), characterized in that: Each chamber of the cylinder (500) is provided with a sealing nozzle (510) at one end facing the barrel (600). A sealing sleeve (700) is fitted on the end of the barrel (600) near the cylinder (500). The inner wall of the sealing sleeve (700) is slidably connected to the outer wall of the barrel (600). The cylinder also includes a transmission mechanism, which is set on the main frame (400) and connected between the sealing sleeve (700) and the trigger (800) of the revolver. When the trigger (800) is pulled, the transmission mechanism can cause the sealing sleeve (700) to slide towards the cylinder (500) and seal the sealing nozzle (510) before the bullet is fired. When the trigger (800) returns to its original position, the transmission mechanism can cause the sealing sleeve (700) to move away from the cylinder (500) and disengage from the sealing nozzle (510).

2. The seal mechanism of a revolver cartridge chamber and barrel as defined in claim 1, wherein: The transmission mechanism includes a sliding rod (110) and a connecting rod (120). A sleeve (410) is provided on the main frame (400) located in front of the trigger (800). The sliding rod (110) is slidably disposed in the sleeve (410) in the front-back direction. A first spring (130) is provided between the front end of the sliding rod (110) and the front end of the sleeve (410). The connecting rod (120) connects the front end of the sliding rod (110) and the sealing sleeve (700). The front end of the trigger (800) The first drive block (810) is provided at the end, and the first drive block (810) is provided with a first drive inclined surface (820). The sliding rod (110) compresses the first spring (130) backward so that the connecting block (111) at its rear end slides and engages with the first drive inclined surface (820). When the trigger (800) is pulled, the first drive block (810) causes the sliding rod (110) to move backward, compress the first spring (130), and drive the sealing sleeve (700) to move backward through the connecting rod (120).

3. The seal mechanism of a revolver cartridge chamber and barrel as defined in claim 2 wherein: An auxiliary rod (140) is also provided between the connecting rod (120) and the trigger (800). A groove (121) is provided in the middle of the connecting rod (120). The groove (121) is an oblique groove with its upper end inclined towards the crater (500). The main frame (400) is provided with a vertical guide groove (440) in the active area of ​​the corresponding connecting rod (120). The front end of the auxiliary rod (140) is connected to both the groove (121) and the vertical guide groove (440) through a protrusion (141). The guide groove (440) is slidably connected, and the rear end of the auxiliary rod (140) is hinged to the hinge shaft (830) at the front end of the first drive block (810). A second spring (150) is provided between the middle part of the auxiliary rod (140) and the main frame (400). When the first drive block (810) drives the sliding rod (110) to move backward, the auxiliary rod (140) drives the connecting rod (120) to move backward synchronously through the protrusion (141) and compresses the second spring (150).

4. The seal mechanism of a revolver cartridge chamber and barrel as defined in claim 3 wherein: The first driving ramp (820) includes a transition section (821) and a driving section (822). The rear end of the auxiliary rod (140) is provided with a strip hole (142). The hinge shaft (830) at the front end of the first driving block (810) slides through the strip hole (142). During the initial stroke of pulling the trigger (800), the transition section (821) of the first driving ramp (820) contacts the connecting block (111), and the hinge shaft (830)... The slides from the front end of the slot (142) to the rear end without moving the sliding rod (110) and the connecting rod (120). During the later stroke of the trigger (800), the driving section (822) of the first driving inclined surface (820) contacts the connecting block (111) again. At the same time, the hinge shaft (830) contacts the rear end of the slot (142) and moves the sliding rod (110) and the connecting rod (120) backward as the trigger (800) rotates.

5. The seal mechanism of a revolver handgun cartridge chamber and barrel according to claim 2, 3 or 4, characterized in that: The connecting rod (120) is connected to the sealing sleeve (700) at one end with a sleeve (160). Each of the two opposite sides of the sleeve (160) has a through-sleeve (161) that is not parallel to the axis of the sleeve (160) in length. A limiting part (162) is provided at one end of the inclined guide groove (161) near the front end of the sleeve (160). The two inclined guide grooves (161) are symmetrically arranged around the axis of the sleeve (160). The main frame (400) has a sliding part (430) that is slidably connected to the sleeve (160). The sliding part (430) has a limiting inclined groove (431) aligned with the two inclined guide grooves (161). The inclined groove (431) near the end of the crater (500) is provided with an anti-rotation groove (432). The sealing sleeve (700) is slidably and rotatably disposed in the sleeve (160). A limiting post (710) is provided on each side of the sealing sleeve (700). The limiting post (710) passes through the inclined guide groove (161) on both sides and is slidably connected to the limiting groove (431). During the process of the sleeve (160) driving the sealing sleeve (700) to move and rotate, when the limiting post (710) simultaneously enters the limiting part (162) of the inclined guide groove (161) and the anti-rotation groove (432) of the limiting groove (431), the sealing sleeve (700) is just sealed and connected with the sealing nozzle (510).

6. The rotating wheel handgun cartridge chamber and barrel sealing mechanism of claim 1 wherein: The transmission mechanism includes a sliding block (210) and a first drive rod (220). A sliding frame (420) is provided on the main frame (400) in front of the trigger (800). The sliding block (210) is slidably disposed in the sliding frame (420) in the front-back direction. A third spring (230) is provided between the front end of the sliding block (210) and the front end of the sliding frame (420). An arc-shaped block (211) is provided at the rear end of the sliding block (210). A sliding inclined surface (212) is provided below the middle part of the sliding block (210). A first wedge block (720) is provided at the lower end of the sealing sleeve (700). A tension spring (730) is provided between the sealing sleeve (700) and the main frame (400). The first drive rod (220) is slidably disposed on the sliding frame (420) in the up-down direction. A first guide block (221) is provided at its upper end, which is slidably connected to the inclined surface of the first wedge block (720). A sliding inclined surface is provided at its lower end, which is slidably connected to the sliding block (210). The groove (222) is slidably connected to the surface (212). A fourth spring (223) is provided between the middle of the first drive rod (220) and the main frame (400). A second drive block (920) is provided at the front end of the trigger (800). A second drive slope (921) is provided at the front end of the second drive block (920). The arc-shaped block (211) at the rear end of the sliding block (210) abuts against the second drive slope (921) under the action of the third spring (230). When the trigger (800) is pulled, the second drive block (920) causes the sliding block (210) to move forward, compressing the third spring (230). Under the action of the sliding slope (212), the first drive rod (220) moves downward, compressing the fourth spring (223). The first drive rod (220) drives the sealing sleeve (700) to move backward through the slope cooperation of the first guide block (221) and the first wedge block (720), while stretching the tension spring (730).

7. The seal mechanism of a revolver cartridge chamber and barrel as defined in claim 6 wherein: The transmission mechanism further includes a pull rod (310) and a second drive rod (320). The pull rod (310) is slidably mounted on the main frame (400) above the magazine (500) in the front-back direction. The front end of the pull rod (310) is fixedly connected to the sealing sleeve (700), and a second wedge block (311) is provided below the rear end. The second drive rod (320) is slidably mounted on the main frame (400) behind the magazine (500) in the up-down direction. The upper end of the second drive rod (320) is provided with an inclined surface that is slidably connected to the second wedge block (311). The second guide block (321) has a sliding post (322) at its lower end. The trigger (800) has a third drive block (930) at its rear end. The sliding post (322) is slidably connected to the guide groove (931) on the third drive block (930). When the trigger (800) is pulled, the third drive block (930) causes the second drive rod (320) to move upward through the guide groove (931). The second drive rod (320) drives the sealing sleeve (700) to move backward through the inclined surface of the second guide block (321) and the second wedge block (311).

8. The rotary handgun cartridge chamber and barrel sealing mechanism of claim 7 wherein: It also includes a locking plate (910), which is fitted and coaxially rotated with the trigger (800). The second drive block (920) and the third drive block (930) are respectively disposed at the front and rear ends of the locking plate (910). The front of the locking plate (910) is provided with a fan-shaped groove (911), and the back of the trigger (800) is provided with a fan-shaped protrusion (840) embedded in the fan-shaped groove (911). The central angle corresponding to the fan-shaped protrusion (840) is smaller than the central angle corresponding to the fan-shaped groove (911). In the natural state, the front end of the fan-shaped protrusion (840) abuts against the front end of the fan-shaped groove (911). When the trigger (800) is pulled, the rear end of the fan-shaped protrusion (840) abuts against the rear end of the fan-shaped groove (911) after the trigger (800) moves to the right for a certain distance. Then the locking plate (910) rotates synchronously with the trigger (800).

9. The rotary handgun cartridge chamber and barrel sealing mechanism of claim 8 wherein: The lower end of the locking turn plate (910) is also provided with a locking hook (912). When the trigger (800) rotates to the point where the rear end of the fan-shaped protrusion (840) abuts against the rear end of the fan-shaped groove (911), the locking hook (912) overlaps with the hook on the trigger (800).

10. The rotating wheel handgun cartridge chamber and barrel sealing mechanism of claim 1 wherein: The sealing sleeve (700) is flared at the end facing the magazine (500), and its inner wall is provided with multiple rings of inner sealing teeth (740). The barrel (600) is provided with a conical section (610) at the end near the magazine (500), and the outer wall of the conical section (610) is provided with multiple rings of first outer sealing teeth (611). The sealing nozzle (510) is frustoconical at the end facing the barrel (600), and its outer wall is provided with multiple rings of second outer sealing teeth (511). When the sealing sleeve (700) and the sealing nozzle (510) are tightly connected, the first outer sealing teeth (611) and the second outer sealing teeth (511) are all in a one-to-one abutment with the inner sealing teeth (740).

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