CN209877757U - Self-tightening bore opening device - Google Patents
Self-tightening bore opening device Download PDFInfo
- Publication number
- CN209877757U CN209877757U CN201920741682.XU CN201920741682U CN209877757U CN 209877757 U CN209877757 U CN 209877757U CN 201920741682 U CN201920741682 U CN 201920741682U CN 209877757 U CN209877757 U CN 209877757U
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- center hole
- self
- center
- hole
- gun barrel
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Abstract
The utility model discloses a from tight thorax mouth device belongs to the firearms field. The gun barrel is characterized by comprising a cylindrical body, wherein a through center hole is formed in the body, the center hole and the gun barrel are coaxial, an internal thread which is screwed in a matched mode with the gun barrel is formed in the center hole at one end of the body, a plurality of exhaust holes which are communicated with the center hole are formed in the peripheral surface at the other end of the body and used for spraying gunpowder gas, and an eccentric distance is formed between the center line of each exhaust hole and the circle center of the body and used for generating torque which is consistent with the screwing direction of the thread to the body when.
Description
Technical Field
The utility model belongs to the firearms field relates to a from tight thorax mouth device.
Background
At present, the connection mode between the rifling port device and the gun barrel is mainly two, namely threaded connection and pin connection.
Interference fit is between the thorax mouth device of round pin connection and the barrel, need use special pressure equipment to assist the utensil, still need process thorax mouth device fixed pin mounting hole between thorax mouth device and barrel after the pressure equipment, installs thorax mouth device fixed pin again, and whole installation process is many, and production efficiency is low, consequently uses more is threaded connection.
The threaded muzzle device has the problem of unreliable fixation, and the muzzle device has the possibility of falling off from the gun barrel during shooting.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem and providing a self-tightening chamber opening device.
The utility model discloses the following technical scheme of accessible realizes: a self-tightening muzzle device is characterized in that: the gun barrel is characterized by comprising a cylindrical body, wherein a through center hole is formed in the body, the center hole and the gun barrel are coaxial, an internal thread which is screwed in a matched mode with the gun barrel is formed in the center hole at one end of the body, a plurality of exhaust holes which are communicated with the center hole are formed in the peripheral surface at the other end of the body and used for spraying gunpowder gas, and an eccentric distance is formed between the center line of each exhaust hole and the circle center of the body and used for generating torque which is consistent with the screwing direction of the thread to the body.
Preferably, the central hole at the other end of the body is trumpet-shaped.
Preferably, the number of the exhaust holes is five, and the five exhaust holes are annularly arranged on the circumferential surface of the other end of the body.
Preferably, the peripheral surface of one end of the body is provided with a ring groove for sealing air flow when the muzzle grenade is launched.
Compared with the prior art, the utility model discloses there is following beneficial effect: the utility model discloses when self-tightening thorax mouth device uses, internal thread and barrel threaded connection through body one end, and the eccentric distance has between the centre of a circle of the central line of the exhaust hole of setting on the body other end is global and the body, and the central line in exhaust hole does not pass through the centre of a circle of body promptly, and when firearms shooting, gunpowder gas from exhaust hole blowout, produce a moment of torsion unanimous with the screw thread direction of screwing to the body, guarantee that the body screws on the barrel, avoided thorax mouth device to have the risk of coming off from the barrel.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is a sectional view taken along line a-a of fig. 2.
Reference numerals
1 is a body, 11 is a central hole of the body, 111 is an internal thread, 12 is an exhaust hole, 13 is a ring groove, o is the center of the body, and d is the eccentric distance between the center line of the exhaust hole and the center of the body.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
In the present embodiment, the terms "upper", "lower", "left", "right", "front", "rear", "upper end", "lower end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, but do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, an embodiment of a self-tightening muzzle device comprises a cylindrical body 1, a through center hole 11 is formed in the body 1, the center hole 11 is a stepped hole, the center hole 11 and a barrel are coaxial, an internal thread 111 screwed with the barrel in a matching manner is formed in the center hole 11 at one end of the body 1, a plurality of exhaust holes 12 communicated with the center hole 11 are formed in the peripheral surface at the other end of the body 1 and used for spraying gunpowder gas, and an eccentric distance d is formed between the center line of each exhaust hole 12 and the circle center o of the body 1 and used for generating torque consistent with the screwing direction of the threads on the body 1 when the gunpowder gas is sprayed.
The center hole 11 at the other end of the body 1 is trumpet-shaped. Is favorable for the full expansion of the airflow and plays a role in cooling.
The number of the exhaust holes 12 is five, and the five exhaust holes 12 are annularly arranged on the circumferential surface of the other end of the body 1.
The peripheral surface of one end of the body 1 is provided with a ring groove 13 for sealing air flow when shooting the muzzle grenade. The gas sprayed from the tail of the grenade can be effectively prevented from leaking out too early.
The working process is as follows:
when the gun is shot, gunpowder gas is sprayed out of the exhaust hole 12, the gunpowder gas generates an acting force opposite to the spraying direction on the body 1, the acting force is superposed with the central line of the exhaust hole 12, and a certain eccentric distance d is reserved between the central line of the exhaust hole 12 and the circle center o of the body 1, so that a torque is formed on the body 1, the direction of the torque is consistent with the direction of the thread locking, and the connection between the body 1 and the gun barrel is ensured not to be loosened.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (4)
1. A self-tightening muzzle device is characterized in that: the gun barrel is characterized by comprising a cylindrical body, wherein a through center hole is formed in the body, the center hole and the gun barrel are coaxial, an internal thread which is screwed in a matched mode with the gun barrel is formed in the center hole at one end of the body, a plurality of exhaust holes which are communicated with the center hole are formed in the peripheral surface at the other end of the body and used for spraying gunpowder gas, and an eccentric distance is formed between the center line of each exhaust hole and the circle center of the body and used for generating torque which is consistent with the screwing direction of the thread to the body.
2. The self-tightening muzzle device of claim 1, wherein: the center hole at the other end of the body is trumpet-shaped.
3. The self-tightening muzzle device of claim 1, wherein: the number of the exhaust holes is five, and the five exhaust holes are annularly arranged on the circumferential surface of the other end of the body.
4. The self-tightening muzzle device of claim 1, wherein: the peripheral surface of one end of the body is provided with a ring groove for sealing air flow when the muzzle grenade is launched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920741682.XU CN209877757U (en) | 2019-05-22 | 2019-05-22 | Self-tightening bore opening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920741682.XU CN209877757U (en) | 2019-05-22 | 2019-05-22 | Self-tightening bore opening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209877757U true CN209877757U (en) | 2019-12-31 |
Family
ID=68947718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920741682.XU Active CN209877757U (en) | 2019-05-22 | 2019-05-22 | Self-tightening bore opening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209877757U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030871A (en) * | 2019-05-22 | 2019-07-19 | 重庆建设工业(集团)有限责任公司 | A kind of self-tightening muzzle attachment |
-
2019
- 2019-05-22 CN CN201920741682.XU patent/CN209877757U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030871A (en) * | 2019-05-22 | 2019-07-19 | 重庆建设工业(集团)有限责任公司 | A kind of self-tightening muzzle attachment |
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