Soft bomb launching calibrator

Abstract

The utility model discloses a soft bomb launching calibrator, which comprises a hard main body pipe, a soft calibration pipe and a gun barrel adapter, the gun barrel adapter can be fixed at the end part of the hard main body pipe, the soft calibration pipe is fixed in the hard main body pipe through the gun barrel adapter, and the axial leads of the hard main body pipe, the soft calibration pipe and the gun barrel adapter coincide. A plurality of spiral calibration groove lines are evenly and positively engraved on the inner surface of the soft calibration tube in the axial lead direction, the calibration groove lines are in an oblique line shape on the soft calibration tube, and the calibration groove lines are parallel to one another. The device is installed on the gun barrel of the toy gun, after the soft bullet is shot out of the gun barrel, extrusion interference can be carried out through the carved spiral calibration groove line, part of advancing kinetic energy of the soft bullet is converted into a certain rotating speed, and therefore the soft bullet can be made to rotate at a certain rotating speed through the Bernoulli principle in the flying process. The flying stability of the soft projectile in the air is guaranteed through rotation movement, and therefore the purposes of reducing the landing walking area and increasing the firing range are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of children's toy guns, in particular to a soft bullet launching calibrator. Background Art

[0002] Soft bullet guns are a type of toy guns. In order to protect children's safety, they usually use long non-expanding sponge soft bullets as firing bullets. Because of its novel gameplay, it not only brings fun to children's lives, but also has a certain improvement on their early intellectual development, so it is deeply loved and sought after by children.

[0003] There are many documents related to soft bullet guns in the prior art. For example, the patent document with the announcement number CN220818724U discloses a soft bullet launcher and a toy gun. The toy gun adopts an elastic air bag, an ejection assembly, a three-way air valve, and a bullet barrel combination as the power structure of the launcher, and has the advantages of good air tightness and good gas impulse performance. However, after careful analysis, it is found that the prior art represented by the toy gun usually adopts a method of improving air tightness to improve the accuracy of shooting. Although this method also has a certain improvement effect, since the weight of the soft bullet is very light and the volume of the toy gun is fixed, after the soft bullet is ejected from the barrel by the high-pressure gas of the launcher, due to air resistance, the flight trajectory will be irregular and the landing point will be scattered. Therefore, it still has technical problems of low accuracy and short flight distance of the soft bullet in actual use. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned problems existing in the prior art, and provide a soft bullet launching calibrator. The utility model is installed on the barrel of a toy gun, and can use the embossed spiral calibration groove line to perform extrusion interference after the soft bullet is fired out of the barrel, so as to convert part of the forward kinetic energy of the soft bullet into a certain rotation speed, so that the soft bullet can use the Bernoulli principle in flight to ensure the stability of the soft bullet flying in the air through rotational motion, thereby achieving the purpose of reducing the landing dispersion area and increasing the shooting range.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A soft bullet launch calibrator comprises a hard main body tube, a soft calibration tube and a barrel adapter, wherein the barrel adapter is detachably fixed to the end of the hard main body tube, the soft calibration tube is fixed in the hard main body tube through the barrel adapter, and the axis center lines of the hard main body tube, the soft calibration tube and the barrel adapter coincide with each other, and the inner surface of the soft calibration tube is uniformly engraved with a plurality of spiral calibration groove lines along the axis center line direction, the calibration groove lines are in the shape of oblique lines on the soft calibration tube, and the calibration groove lines are parallel to each other.

[0007] The cross section of the calibration slot line is square or triangle.

[0008] The inner diameter of the positive line of the calibration groove line is 0.1-0.3mm smaller than the outer diameter of the soft elastic.

[0009] The inclination angle of the calibration groove line on the soft calibration tube is 20-40 degrees.

[0010] The outer surface of the soft calibration tube is provided with a hollow structure.

[0011] A limiting boss is arranged inside the left end of the hard main body tube, a gun barrel adapter is fixedly sleeved inside the right end of the hard main body tube, and a soft calibration tube is located between the limiting boss and the gun barrel adapter.

[0012] The gun barrel adapter comprises an integrally formed small cylindrical section and a large cylindrical section, the small cylindrical section is fixed in the end of the hard main body tube by threads, and the large cylindrical section is used to be fixedly sleeved on the gun barrel by threads.

[0013] The left end of the hard main body tube is provided with a bell mouth.

[0014] The hard main body tube is a circular cylinder made of hard plastic or hard metal.

[0015] The soft calibration tube is a round cylinder made of TPU, nitrile, fluororubber or silicone.

[0016] The advantages of adopting the utility model are:

[0017] 1. The utility model adopts a combined calibration structure of a hard tube and a soft tube. The hard tube is used as the main body of the calibrator, which is beneficial to protect the soft tube and improve the overall structural strength of the calibrator. The soft calibration tube is fixed in the hard main body tube, and the spiral calibration groove is engraved on the inner surface of the soft calibration tube. After the soft bullet is fired out of the barrel, the engraved spiral calibration groove is used to perform extrusion interference, which exerts a uniform linear calibration torque on the soft bullet, converts part of the forward kinetic energy of the soft bullet into a certain rotation speed, so that the soft bullet can use the Bernoulli principle in flight to ensure the stability of the soft bullet in the air through rotational motion, which is not only beneficial to reduce the landing area, but also beneficial to improve the shooting accuracy of the soft bullet and the range of the soft bullet. In addition, the barrel adapter is not only beneficial to quickly fix the calibrator to the barrel of the toy gun, but also beneficial to the rapid replacement of the soft calibration tube.

[0018] 2. The soft calibration tube adopted by the utility model can form soft contact with the soft bullet, which ensures the flight calibration performance of the soft bullet. At the same time, it not only reduces the friction of the calibration groove line on the soft bullet projectile, but also reduces the drop value of the initial velocity of the launcher, and also improves the reuse rate of the soft bullet.

[0019] 3. The utility model sets the inner diameter of the positive line of the calibration groove line to be 0.1-0.3mm smaller than the outer diameter of the soft bullet. After testing, when the inner diameter of the positive line of the calibration groove line is greater than 0.3mm, the soft bullet will be severely squeezed, causing redundant friction, which will lead to a decrease in the firing performance of the soft bullet. When the inner diameter of the positive line of the calibration groove line is less than 0.1mm, it cannot have a suitable calibration effect on the soft bullet. Therefore, by setting the inner diameter of the positive line of the calibration groove line to be 0.1-0.3mm smaller than the outer diameter of the soft bullet, an effective calibration effect can be achieved on the soft bullet, which is beneficial to improving the shooting accuracy and range of the soft bullet.

[0020] 4. The utility model sets the inclination angle of the calibration groove on the soft calibration tube to 20-40 degrees. Under the existing safety power data line of soft bullet toy guns (1.8 joules / square centimeter), the calibration groove adopts an inclination angle of 20-40 degrees to achieve the effect of effective calibration accuracy, while increasing the angle will have the opposite effect. In addition, if the power source of the soft bullet toy gun exceeds the safety data line, the constraint force of the inclination angle will not only fail to produce an effective calibration effect, but also form a certain resistance and reduce the initial velocity of the launcher.

[0021] 5. The utility model can quickly replace the soft calibration tube, which is conducive to adapting to different equipment and application scenarios;

[0022] 6. The utility model adopts a positive spiral calibration groove line. Due to the limitation of soft materials, it can effectively prevent users from privately modifying and using it on other launchers and projectiles, thereby enhancing its anti-modification and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional structural schematic diagram of the utility model;

[0024] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0025] Figure 3 It is a left-side structural schematic diagram of the utility model;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 5 It is a cross-sectional three-dimensional structural schematic diagram of the utility model;

[0028] Figure 6 This is a schematic diagram of the main structure of the soft calibration tube in the utility model;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of the soft calibration tube in the utility model;

[0030] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the soft calibration tube in the utility model.

[0031] Marked in the figure: 1. Hard main tube, 2. Soft calibration tube, 3. Barrel adapter, 4. Calibration groove line, 5. Limit boss, 6. Bell mouth. DETAILED DESCRIPTION

[0032] Example 1

[0033] like Figure 1-8 As shown, this embodiment provides a soft bullet launch calibrator, including a hard main body tube 1, a soft calibration tube 2 and a barrel adapter 3. Among them, the hard main body tube 1 is a circular cylinder made of hard plastic or hard metal, the soft calibration tube 2 is a circular cylinder made of TPU, nitrile, fluororubber or silicone, and the barrel adapter 3 is preferably made of the same material as the hard main body tube 1, which is used to realize the fixation of the calibrator on the barrel of the toy gun. The barrel adapter 3 is detachably fixed to the end of the hard main body tube 1, and the soft calibration tube 2 is fixed in the hard main body tube 1 through the barrel adapter 3. Since a detachable connection structure is adopted between the barrel adapter 3 and the hard main body tube 1, the soft calibration tube 2 can be easily replaced to meet different needs. After fixation, the axis lines of the hard main body tube 1, the soft calibration tube 2 and the barrel adapter 3 coincide with each other to ensure that they have a better calibration effect on the soft bullet. In addition, the inner surface of the soft calibration tube 2 is uniformly engraved with a plurality of spiral calibration grooves 4 along the axial direction. Each calibration groove 4 is in the shape of an oblique line on the soft calibration tube 2 and each calibration groove 4 is parallel to each other.

[0034] It should be noted that Figure 1 Taking the direction shown as an example, the calibration groove line 4 on the soft calibration tube 2 is in the shape of an oblique line, which means that the calibration groove line 4 as a whole can be regarded as an oblique line, and its two ends are at different heights on the soft calibration tube 2, and the calibration groove line 4 forms a certain inclination angle with the axis of the soft calibration tube 2 itself.

[0035] According to a preferred implementation of this embodiment, Figure 1 , 4 As shown in FIGS. 5 and 8 , the cross section of the calibration slot line 4 is a square or a triangle. Of course, the cross section of the calibration slot line 4 can also be other different shapes according to the needs of different usage scenarios.

[0036] According to a preferred implementation of this embodiment, Figure 1 As shown, a limiting boss 5 is provided inside the left end of the hard main body tube 1, a barrel adapter 3 is fixedly sleeved inside the right end of the hard main body tube 1, and a soft calibration tube 2 is fixed between the limiting boss 5 and the barrel adapter 3 by the barrel adapter 3.

[0037] According to a preferred implementation of this embodiment, Figure 1 , 2 As shown in FIG. 4 , the right end of the hard main body tube 1 is provided with a thread inside, and the gun barrel adapter 3 includes a small cylindrical section and a large cylindrical section formed in one piece, the small cylindrical section is provided with a thread outside, and the large cylindrical section is provided with a thread inside. During installation, the small cylindrical section can be fixed in the end of the hard main body tube 1 by a thread, and the large cylindrical section can be fixedly sleeved on the gun barrel by a thread, which is convenient for the calibrator itself to be folded and replaced, and the calibrator and the gun barrel to be disassembled and assembled.

[0038] According to a preferred implementation of this embodiment, the left end of the hard main body tube 1 has a bell mouth 6, which is located between the left end face of the hard main body tube 1 and the limiting boss 5, and its inner diameter gradually increases from right to left. The bell mouth 6 has the function of gradually diffusing redundant airflow, so that the soft bullet will not form irregular end flow at the tail when leaving the bell mouth 6, thereby avoiding affecting the trajectory of the soft bullet.

[0039] The implementation principle of this embodiment is:

[0040] After the calibrator is installed on the barrel of the toy gun through the barrel adapter 3, the toy gun is used to fire the soft bullet. When the soft bullet is fired into the calibrator, the spiral calibration groove line 4 engraved on the inner surface of the soft calibration tube 2 will contact and squeeze the soft bullet, thereby exerting a uniform linear calibration torque on the soft bullet, thereby converting a part of the forward kinetic energy of the soft bullet into a certain rotational speed, so that the soft bullet can use the Bernoulli principle in flight to ensure the stability of the soft bullet in the air through rotational motion, thereby making the soft bullet have a longer range and can hit the target more accurately.

[0041] In addition, the applicant has tested the calibrator of this embodiment, as follows:

[0042] Test conditions: The test was conducted using Hasbro's NERF series soft bullet toy launcher Elite series A0710 in its original factory power state. The test target was to shoot at a target paper the size of A4 paper at a distance of 10m.

[0043] Test process: When the calibrator is not used, the target hitting rate of the soft bullet toy launcher is 60%, the centering rate of A4 paper is only 20%, and the initial velocity of the soft bullet projectile is not lost.

[0044] After using the calibrator of this embodiment, the target hit rate of the soft bullet toy launcher is 80%, the centering rate of the A4 paper is 70%, and the initial velocity of the soft bullet projectile is reduced by 5%. Since the soft calibrator in this solution has a lower impact on the initial velocity of the projectile, the projectile can fly at a higher initial velocity and the trajectory is straighter, which can correspondingly improve the range and hit rate of the soft bullet.

[0045] Example 2

[0046] Based on Example 1, this example further optimizes the structure of the soft calibration tube 2.

[0047] In order to reduce the materials used to prepare the soft calibration tube 2 and reduce the cost while ensuring the required structural strength of the soft calibration tube 2, as Figure 6-8 As shown, in this embodiment, a hollow structure is provided on the outer surface of the soft calibration tube 2.

[0048] It should be noted that this embodiment does not limit the specific shape of the hollow structure. Figure 6-8 The hollow structure of the axial oblique ribs and radial transverse ribs shown may also be other hollow structures, as long as the hollow structure can reduce the cost and ensure its structural strength.

[0049] Example 3

[0050] In order to prevent the calibration groove line 4 from failing to play a soft and elastic role in achieving the calibration effect, or failing to achieve a suitable calibration effect, this embodiment further optimizes the calibration groove line 4 based on the first or second embodiment.

[0051] Specifically, the inner diameter of the positive line of the calibration groove line 4 is 0.1-0.3mm smaller than the outer diameter of the soft elastic, and the inclination angle of the calibration groove line 4 on the soft calibration tube 2 is 20-40 degrees. Preferably, the inner diameter of the positive line of the calibration groove line 4 is 0.2mm smaller than the outer diameter of the soft elastic, and the inclination angle of the calibration groove line 4 on the soft calibration tube 2 is 30 degrees. In this way, it can be ensured that the calibration groove line 4 has the best calibration effect on the soft elastic.

[0052] The applicant also tested the calibrator of this embodiment. The test conditions of this test were the same as those of Example 1. The test process was: 20 shots were made using calibrators with a positive line inner diameter smaller than the outer diameter of the soft bullet by 0.1mm, 0.2mm and 0.3mm, respectively. Among them, the target hit rate of the soft bullet toy launcher with a positive line inner diameter smaller than the outer diameter of the soft bullet by 0.1mm was 80%, the centering rate was 70%, and the initial velocity of the soft bullet projectile was reduced by 1%, which can be ignored; the target hit rate of the soft bullet toy launcher with a positive line inner diameter smaller than the outer diameter of the soft bullet by 0.2mm was 80%, the centering rate was 72%, and the initial velocity of the soft bullet projectile was reduced by 3%; the target hit rate of the soft bullet toy launcher with a positive line inner diameter smaller than the outer diameter of the soft bullet by 0.3mm was 80%, the centering rate was 75%, and the initial velocity of the soft bullet projectile was reduced by 5%.

[0053] It can be seen from the above tests that the present embodiment can achieve the best calibration effect by setting the inner diameter of the positive line of the calibration groove line 4 to be 0.1-0.3 mm smaller than the outer diameter of the soft elastic.

[0054] The above description is only a specific implementation method of the present utility model. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes; all disclosed features, or all methods or steps in the process, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. A soft bullet launching calibrator, characterized in that: The invention comprises a hard main body tube (1), a soft calibration tube (2) and a barrel adapter (3), wherein the barrel adapter (3) is detachably fixed to the end of the hard main body tube (1), the soft calibration tube (2) is fixed in the hard main body tube (1) through the barrel adapter (3), and the axis centers of the hard main body tube (1), the soft calibration tube (2) and the barrel adapter (3) coincide with each other, and the inner surface of the soft calibration tube (2) is uniformly engraved with a plurality of spiral calibration grooves (4) along the axis center direction, the calibration grooves (4) are in the shape of oblique lines on the soft calibration tube (2), and the calibration grooves (4) are parallel to each other.

2. A soft bullet launching calibrator according to claim 1, characterized in that: The cross section of the calibration groove line (4) is square or triangular.

3. The soft bullet launching calibrator according to claim 1, characterized in that: The inner diameter of the positive line of the calibration groove line (4) is 0.1-0.3 mm smaller than the outer diameter of the soft elastic.

4. A soft bullet launching calibrator according to any one of claims 1 to 3, characterized in that: The inclination angle of the calibration groove line (4) on the soft calibration tube (2) is 20-40 degrees.

5. The soft bullet launching calibrator according to claim 1, characterized in that: The outer surface of the soft calibration tube (2) is provided with a hollow structure.

6. The soft bullet launching calibrator according to claim 1, characterized in that: A limiting boss (5) is provided inside the left end of the hard main body tube (1), a gun barrel adapter (3) is fixedly sleeved inside the right end of the hard main body tube (1), and the soft calibration tube (2) is located between the limiting boss (5) and the gun barrel adapter (3).

7. A soft bullet launching calibrator according to any one of claims 1-3, 5-6, characterized in that: The gun barrel adapter (3) comprises an integrally formed small cylindrical section and a large cylindrical section, the small cylindrical section being fixed in the end of the hard main body tube (1) by means of threads, and the large cylindrical section being used to be fixedly sleeved on the gun barrel by means of threads.

8. The soft bullet launching calibrator according to claim 1, characterized in that: The left end of the hard main body tube (1) has a bell mouth (6).

9. The soft bullet launching calibrator according to claim 1, characterized in that: The hard main body tube (1) is a circular cylinder made of hard plastic or hard metal.

10. The soft bullet launching calibrator according to claim 1, characterized in that: The soft calibration tube (2) is a round cylinder made of TPU, nitrile, fluororubber or silicone.

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