Modularized design coach bomb

Abstract

The utility model discloses a modular design coach bomb. The modular design coach bomb comprises a head part, a middle assembly and a tail part which are sequentially connected. A first threaded hole is formed in the axis of the tail end of the head part; the middle assembly comprises a connecting piece, a first screw rod is arranged at the head end of the connecting piece, and the first screw rod is in threaded connection with the first threaded hole; the connecting piece is provided with a lightening hole, and the lightening hole is provided with an internal thread close to the tail part of the connecting piece; the middle assembly further comprises a sleeving piece, and the sleeving piece is connected to the outer side of the connecting piece in a sleeving mode. The tail part is provided with a second screw rod which is in threaded connection with the lightening hole; the head end of the sleeving piece is connected with a first elastic belt, the tail end of the sleeving piece is connected with a second elastic belt, and the outer diameter of the first elastic belt and the outer diameter of the second elastic belt are larger than the maximum outer diameter of the head piece, the sleeving piece and the tail piece. The scheme has the beneficial effects that according to the description of the scheme, the structure is simple, the design is reasonable, the modular design is adopted, the weight and the gravity center are convenient to adjust, the easy-to-wear bullet belt is convenient to replace, and the service life of the bullet belt is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of training bullets, in particular to a training bullet with a modular design. Background Art

[0002] At present, the training bullets used for shooting training adopt an integrated structure. Due to the friction between the bullet and the barrel during shooting, in order to reuse the bullet body, a belt is often installed on the bullet body. However, the wear rate of the belt is still too high, and it is not convenient to replace the belt. Utility Model Content

[0003] The utility model aims at the deficiencies in the prior art and provides a modular training bullet with a simple structure, reasonable design, modular design, convenient adjustment of weight and center of gravity, convenient replacement of easily worn bullet belts, and prolonged service life of the bullet belts.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a modular design training bullet, comprising a head component, a middle component and a tail component connected in sequence;

[0005] The head component is conical, and a first threaded hole is arranged at the axis of the tail end of the head component, and the first threaded hole is coaxial with the head component;

[0006] The middle component comprises a connecting piece, a first screw is provided at the first end of the connecting piece, and the first screw is threadedly connected with the first threaded hole;

[0007] The connecting piece is provided with a weight-reducing hole coaxial with the first screw rod from the tail end, and the weight-reducing hole is provided with an internal thread near the tail end of the connecting piece;

[0008] The middle component also includes a sleeve member, the outer wall of which is cylindrical, and the sleeve member is sleeved on the outer side of the connecting member;

[0009] The tail component comprises a truncated cone body, a second screw is arranged at the axial center position of the first end of the truncated cone body, the second screw is coaxial with the truncated cone body, and the second screw is threadedly connected to the weight-reducing hole;

[0010] The first elastic belt is connected to the front end of the sleeve, and the second elastic belt is connected to the rear end of the sleeve. The outer diameters of the first elastic belt and the second elastic belt are greater than the maximum outer diameters of the head component, the sleeve and the rear component.

[0011] Furthermore, the first elastic belt covers the outer side of the first end of the sleeve, the outer side of the first elastic belt near the first end is set as a frustum, and the outer side of the first elastic belt near the tail end is set as a cylindrical surface;

[0012] The frustum surface is located on the extension surface of the conical surface of the head component;

[0013] A first folded edge is provided at the front end of the first elastic band, and the first folded edge is squeezed between the head component and the sleeve component.

[0014] Furthermore, an arcuate groove is provided at the rear end edge of the head component, and an arcuate protrusion with the same diameter as the arcuate groove is provided at the first folded edge bend of the first elastic belt, and the arcuate protrusion is embedded in the arcuate groove.

[0015] Furthermore, the first elastic band gradually thickens near the first folded edge bend.

[0016] Furthermore, the outer side of the second elastic belt is a cylindrical surface;

[0017] The first end of the second elastic belt is provided with a second folded edge, and the second folded edge is squeezed between the tail component and the sleeve component;

[0018] The outer edge of the front end of the tail component is arranged to be an arc-shaped transition, and the second elastic belt is pressed onto the outer edge of the tail component from the second folded edge.

[0019] Furthermore, a hexagonal socket is provided at the tail end of the weight-reducing hole.

[0020] Furthermore, the connecting member includes a body, and a transition portion is connected to the head end of the body;

[0021] The first end of the transition portion is connected to the first screw;

[0022] The weight-reducing hole is arranged at the axis of the body;

[0023] The diameter of the body gradually increases from the head end to the tail end, the diameter of the head end of the body is larger than the diameter of the transition part, and the diameter of the transition part is larger than the diameter of the first screw.

[0024] Furthermore, the head component, the connecting component and the tail component are made of 38CRSI structural alloy steel;

[0025] The sleeve is made of PA66 high-strength nylon;

[0026] The first elastic belt and the second elastic belt are made of brass.

[0027] During assembly, the first elastic band made of brass is sleeved on the head end of the sleeve piece made of nylon, and then the connecting piece is inserted into the sleeve piece, and then the connecting piece is threadedly connected with the head piece.

[0028] In this way, when the connecting piece is squeezed from inside to outside and from back to front, the first elastic band will be firmly squeezed on the head end of the sleeve piece, and the first elastic band will be firmly squeezed between the head piece and the sleeve piece.

[0029] Then place the second elastic band at the outer edge of the tail component, and thread the tail component and the connecting piece together, so that the second elastic band will be squeezed between the tail component and the sleeve.

[0030] During the firing of the training bullet, the first and second bullet belts rub against the barrel. At this time, the first and second bullet belts are subjected to the backward friction force of the barrel, but because the first and second bullet belts are both provided with folded edges, the first and second bullet belts will not retreat backwards or curl.

[0031] Moreover, due to the structure of the second elastic belt, the second elastic belt gradually thickens near the bend. The second elastic belt also gradually thickens near the bend, which further prevents the first elastic belt and the second elastic belt from fading away under the friction of the gun barrel.

[0032] And because the diameter of the connector body increases gradually from the beginning to the end, the sleeve is not easy to be compressed backwards, and even if it is compressed, it is easy to recover. Moreover, there is a step barrier between the transition part and the body.

[0033] When the first elastic belt and the second elastic belt are repeatedly used and worn out and need to be replaced, first remove the tail component in a spiral manner. Due to the arc transition extrusion between the second elastic belt and the tail end of the tail component, when the extrusion force is lost, it is easy to remove it toward the head end of the tail component.

[0034] Then remove the connector by the hexagonal screw. Since the diameter of the connector body gradually increases from the beginning to the end, it is relatively easy to remove the connector.

[0035] Once the connecting piece is removed, the sleeve loses the squeezing force from the inside to the outside, the pressure on the first elastic band is reduced, and it is easy to remove.

[0036] The beneficial effects of this scheme can be known from the description of the above scheme. It has a simple structure and reasonable design and has the following advantages:

[0037] 1. The training bullet is a whole in appearance. After adopting modular design, the overall weight and center of gravity can be adjusted by adjusting the size and material of the components without changing the overall size, so that it has the same weight and center of gravity as the real bullet;

[0038] 2. Due to the modular design, and the outer diameter of the first and second elastic belts is larger than the diameter of other parts, the wear only occurs on the elastic belts. Even if the sleeve is deformed to a certain extent due to force conduction, only the first and second elastic belts and the sleeve need to be replaced during replacement. The head and tail parts made of alloy steel can be reused.

[0039] 3. The front ends of the first and second ammunition belts are provided with folded edges, and gradually thickened near the folded edges, which can prevent the front part from wrinkling or rolling up during friction with the gun barrel, thus extending the service life of the ammunition belts;

[0040] 4. An arc groove is arranged on the edge of the head component, and an arc protrusion is arranged at the front end of the first ammunition belt to be embedded in the arc groove, so as to prevent the front end edge of the ammunition belt with the largest diameter from rolling back due to friction with the gun barrel;

[0041] 5. An arc-shaped transition is arranged at the outer edge of the front end of the tail component, and the second elastic band is squeezed at the arc-shaped transition of the tail component, which not only increases the thickness of the bending part of the second elastic band to prevent curling; but also provides axial support force; further, when disassembling, it is easy to remove the second elastic band forward;

[0042] 6. Low production cost, strong practicality and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural schematic diagram of the utility model;

[0044] Figure 2 It is a cross-sectional view of the utility model along the axis line;

[0045] Figure 3 for Figure 2 A magnified view of part I;

[0046] Figure 4 for Figure 2 A magnified view of part II;

[0047] Figure 5 It is a structural schematic diagram of the connecting piece of the utility model;

[0048] In the figure, 1, head component; 2, middle component; 3, tail component; 4, first threaded hole; 5, connecting piece; 6, first screw; 7, weight-reducing hole; 8, socket; 9, second screw; 10, first elastic band; 11, second elastic band; 12, first folded edge; 13, arc-shaped protrusion; 14, second folded edge; 15, hexagonal groove; 16, main body; 17, transition part. DETAILED DESCRIPTION

[0049] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0050] like Figure 1-5 As shown, this embodiment is a modular design training bullet, comprising a head component 1, a middle component 2 and a tail component 3 connected in sequence;

[0051] The head component 1 is conical, and a first threaded hole 4 is provided at the axis of the tail end of the head component 1, and the first threaded hole 4 is coaxial with the head component 1;

[0052] The middle component 2 includes a connecting member 5, a first screw rod 6 is provided at the first end of the connecting member 5, and the first screw rod 6 is threadedly connected with the first threaded hole 4;

[0053] The connecting member 5 is provided with a weight-reducing hole 7 coaxial with the first screw rod 6 from the tail end, and the weight-reducing hole 7 is provided with an internal thread near the tail end of the connecting member 5;

[0054] The middle component 2 also includes a sleeve member 8, the outer wall of the sleeve member 8 is cylindrical, and the sleeve member 8 is sleeved on the outer side of the connecting member 5;

[0055] The tail member 3 includes a truncated cone body, a second screw 9 is arranged at the axial center position of the front end of the truncated cone body, the second screw 9 is coaxial with the truncated cone body, and the second screw 9 is threadedly connected to the weight-reducing hole 7;

[0056] The first elastic band 10 is connected to the front end of the sleeve 8, and the second elastic band 11 is connected to the rear end of the sleeve 8. The outer diameters of the first elastic band 10 and the second elastic band 11 are larger than the maximum outer diameters of the head component 1, the sleeve 8 and the rear component 3.

[0057] Furthermore, the first elastic belt 10 covers the outer side of the head end of the sleeve 8, the outer side of the first elastic belt 10 is arranged near the head end thereof as a frustum, and the outer side of the first elastic belt 10 is arranged near the tail end thereof as a cylindrical surface;

[0058] The frustum surface is located on the extension surface of the conical surface of the head component 1;

[0059] A first folded edge 12 is provided at the front end of the first elastic band 10 , and the first folded edge 12 is squeezed between the head component 1 and the sleeve component 8 .

[0060] Furthermore, an arc groove is provided at the rear end edge of the head component 1, and an arc protrusion 13 with the same diameter as the arc groove is provided at the bending part of the first folded edge 12 of the first elastic band 10, and the arc protrusion 13 is embedded in the arc groove.

[0061] Furthermore, the first elastic band 10 gradually thickens near the bending portion of the first folded edge 12 .

[0062] Furthermore, the outer side of the second elastic belt 11 is a cylindrical surface;

[0063] A second folded edge 14 is provided at the head end of the second elastic belt 11, and the second folded edge 14 is squeezed between the tail component 3 and the sleeve component 8;

[0064] The outer edge of the front end of the tail component 3 is configured as an arc-shaped transition, and the second elastic band 11 is pressed onto the outer edge of the tail component 3 from the second folded edge 14 .

[0065] Furthermore, a hexagonal socket 15 is provided at the tail end of the lightening hole 7 .

[0066] Furthermore, the connecting member 5 includes a body 16, and a transition portion 17 is connected to the first end of the body 16;

[0067] The first end of the transition portion 17 is connected to the first screw rod 6;

[0068] The body 16 is provided with a weight-reducing hole 7 at its axis;

[0069] The diameter of the body 16 gradually increases from the head end to the tail end. The head end diameter of the body 16 is larger than the transition portion 17 , and the transition portion 17 is larger than the first screw 6 .

[0070] Furthermore, the head component 1, the connecting component 5 and the tail component 3 are made of 38CRSI structural alloy steel;

[0071] The sleeve 8 is made of PA66 high-strength nylon;

[0072] The first elastic belt 10 and the second elastic belt 11 are made of brass.

[0073] During assembly, the first elastic band 10 made of brass is first sleeved on the head end of the sleeve 8 made of nylon, and then the connecting member 5 is inserted into the sleeve 8, and then the connecting member 5 is threadedly connected to the head member 1.

[0074] In this way, when the connecting member 5 is squeezed from the inside to the outside and from the back to the front, the first elastic band 10 will be firmly squeezed at the head end of the sleeve member 8, and the first elastic band 10 will be firmly squeezed between the head member 1 and the sleeve member 8.

[0075] Then, the second elastic band 11 is placed at the outer edge of the tail component 3 , and the tail component 3 and the connecting member 5 are threadedly connected. The second elastic band 11 will be squeezed between the tail component 3 and the sleeve 8 .

[0076] During the firing of the training bullet, the first and second bullet belts 10, 11 rub against the barrel. At this time, the first and second bullet belts 10, 11 are subjected to the friction force from the barrel backwards. However, since the first and second bullet belts 10, 11 are both provided with folded edges, the first and second bullet belts 10, 11 will not retreat backwards or curl.

[0077] Moreover, due to the structure of the second elastic belt 11, the second elastic belt 11 gradually thickens near the bend. The second elastic belt 11 also gradually thickens near the bend, which further prevents the first elastic belt 10 and the second elastic belt 11 from fading away under the friction of the gun barrel.

[0078] And because the diameter of the main body 16 of the connector 5 gradually increases from the beginning to the end, the sleeve 8 is not easy to be compressed backwards, and even if it is compressed, it is easy to recover. Moreover, there is a step between the transition part 17 and the main body 16 to block it.

[0079] When the first elastic belt 10 and the second elastic belt 11 are repeatedly used and worn out, they need to be replaced. First, the tail piece 3 is spirally removed. Due to the arc transition extrusion between the second elastic belt 11 and the tail piece 3 tail end, when the extrusion force is lost, it is easy to remove it toward the head end of the tail piece 3.

[0080] Then the connecting member 5 is removed by spirally removing the hexagonal groove 15. Since the diameter of the connecting member 5 body 16 gradually increases from the beginning to the end, it is relatively convenient to remove the connecting member 5.

[0081] Once the connecting member 5 is removed, the sleeve member 8 loses the squeezing force from the inside to the outside, and the pressure on the first elastic band 10 is reduced, so it is easy to remove.

[0082] The technical features not described in the present invention can be realized through or by adopting the existing technology, which will not be described here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A modular design training bomb, characterized in that: It includes a head component, a middle component and a tail component connected in sequence; The head component is conical, and a first threaded hole is arranged at the axis of the tail end of the head component, and the first threaded hole is coaxial with the head component; The middle component comprises a connecting piece, a first screw is provided at the first end of the connecting piece, and the first screw is threadedly connected with the first threaded hole; The connecting piece is provided with a weight-reducing hole coaxial with the first screw rod from the tail end, and the weight-reducing hole is provided with an internal thread near the tail end of the connecting piece; The middle component also includes a sleeve member, the outer wall of which is cylindrical, and the sleeve member is sleeved on the outer side of the connecting member; The tail component comprises a truncated cone body, a second screw is arranged at the axial center position of the first end of the truncated cone body, the second screw is coaxial with the truncated cone body, and the second screw is threadedly connected to the weight-reducing hole; The first elastic belt is connected to the front end of the sleeve, and the second elastic belt is connected to the rear end of the sleeve. The outer diameters of the first elastic belt and the second elastic belt are greater than the maximum outer diameters of the head component, the sleeve and the rear component.

2. A modular design training bullet according to claim 1, characterized in that: The first elastic band covers the outer side of the first end of the sleeve, the outer side of the first elastic band near the first end is provided with a frustum surface, and the outer side of the first elastic band near the tail end is provided with a cylindrical surface; The frustum surface is located on the extension surface of the conical surface of the head component; A first folded edge is provided at the front end of the first elastic band, and the first folded edge is squeezed between the head component and the sleeve component.

3. A modular design training bullet according to claim 2, characterized in that: An arcuate groove is arranged at the rear end edge of the head component, and an arcuate protrusion having the same diameter as the arcuate groove is arranged at the first folded edge bending part of the first elastic belt, and the arcuate protrusion is embedded in the arcuate groove.

4. A modular design training bullet according to claim 3, characterized in that: The first elastic band gradually thickens near the first folded edge.

5. A modular design training bullet according to claim 1, characterized in that: A cylindrical surface is arranged on the outer side of the second elastic belt; The first end of the second elastic belt is provided with a second folded edge, and the second folded edge is squeezed between the tail component and the sleeve component; The outer edge of the front end of the tail component is arranged to be an arc-shaped transition, and the second elastic belt is pressed onto the outer edge of the tail component from the second folded edge.

6. A modular design training bullet according to claim 1, characterized in that: The tail end of the weight-reducing hole is provided with a hexagonal socket.

7. A modular design training bullet according to claim 1, characterized in that: The connecting member comprises a body, and a transition portion is connected to the first end of the body; The first end of the transition portion is connected to the first screw; The weight-reducing hole is arranged at the axis of the body; The diameter of the body gradually increases from the head end to the tail end, the diameter of the head end of the body is larger than the diameter of the transition part, and the diameter of the transition part is larger than the diameter of the first screw.

8. A modular training bullet according to claim 1, characterized in that: The head component, connecting component and tail component are made of 38CRSI alloy structural steel; The sleeve is made of PA66 high-strength nylon; The first elastic belt and the second elastic belt are made of brass.

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