Piston
By incorporating a reinforcing plate and a flexible connection structure within the piston body, the problems of complex structure, heavy weight, and low strength of traditional pistons are solved, achieving both weight reduction and enhanced strength while improving disassembly and assembly flexibility and sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional decoy launchers have piston structures that are complex, heavy, and weak, leading to unstable decoy launches and affecting their effectiveness.
A piston was designed by setting multiple reinforcing plates inside the piston body, and setting handle holes, threaded connecting sleeves and threaded connecting heads on them. Combined with connecting rods, connecting discs and limiting plates, the structural strength of the piston is enhanced, and flexible connection and disassembly are achieved through threaded connection and groove design.
The increased structural strength of the piston allows it to withstand greater pressure without easily deforming, while reducing weight and improving disassembly and assembly flexibility, ensuring stable connection and sealing between the piston and other components.
Smart Images

Figure CN224003148U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a piston and belongs to the field of piston technology. Background Technology
[0002] A piston is a mechanical component used to perform reciprocating motion within a cylinder to achieve a specific function. The piston body is the main part of the piston, usually cylindrical, and is generally made of high-strength aluminum alloy or cast iron to minimize weight while ensuring strength, in order to meet the requirements of high-speed reciprocating motion.
[0003] In the military and aviation fields, decoy devices are often used to confuse enemy radar or missile systems. The piston structure is an important component of the decoy launcher. However, the piston structure in traditional decoy launchers often suffers from problems such as complex structure, heavy weight, and low strength, which leads to unstable decoy launch and affects the effectiveness of use. To address these issues, we have developed a piston that solves the above problems. Utility Model Content
[0004] To solve the above problems, this utility model provides a piston, the specific technical solution of which is as follows:
[0005] A piston includes a piston body, with multiple reinforcing plates fixedly connected to the inner bottom wall of the piston body. Each reinforcing plate has a handle hole on one side away from each other. A groove is formed on the upper surface of the piston body, and a threaded connecting sleeve is fixedly connected to the inner wall of the groove. A threaded connecting head is threadedly connected to the inner ring of the threaded connecting sleeve. Two annular grooves are formed on the outer surface of the piston body, and an upper sealing ring and a lower support ring are respectively provided inside the two annular grooves. A connecting rod is fixedly connected to the bottom end of the threaded connecting head.
[0006] Preferably, the bottom end of the connecting rod passes through the piston body and extends to the bottom of the piston body, and a limiting piece is fixedly connected to the outer surface of the connecting rod.
[0007] Preferably, a connecting plate is fitted onto the outer surface of the connecting rod, and a plurality of connecting holes are formed on the bottom surface of the connecting plate.
[0008] Preferably, a locking nut is provided below the connecting rod, the outer surface of the locking nut is adapted to the outer surface of the bottom end of the connecting rod, and the limiting piece is located above the locking nut.
[0009] Preferably, a limiting sealing gasket is fixedly connected to the inner bottom wall of the threaded connecting sleeve, and the upper surface of the limiting sealing gasket is in close contact with the bottom surface of the threaded connecting head.
[0010] Preferably, the outer surface of the upper sealing ring and the outer surface of the lower support ring are in close contact with the inner walls of the two annular grooves, respectively.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] This piston, with multiple reinforcing plates inside the piston body, enhances the structural strength of the piston body, enabling it to withstand greater pressure without easily deforming. It reduces weight while maintaining the overall strength of the piston body. The handle holes on the reinforcing plates facilitate the removal and placement of the piston body without adding other mechanisms. The threaded connector in the threaded connection sleeve, in cooperation with the connecting rod and connecting plate, allows for more flexible connection and disassembly of the piston body with other components, improving the flexibility of assembly and disassembly. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural schematic diagram of the front view of this utility model;
[0014] Figure 2 This is a sectional view of the front view of this utility model;
[0015] Figure 3 This is a three-dimensional structural schematic diagram of the piston body in this utility model, shown in the top view.
[0016] Figure 4 This is a sectional view of the front view of the threaded connecting sleeve in this utility model.
[0017] Figure descriptions: 1. Piston body; 2. Reinforcing plate; 3. Handle hole; 4. Threaded connector; 5. Groove; 6. Threaded connecting sleeve; 7. Connecting rod; 8. Limiting plate; 9. Connecting disc; 10. Connecting hole; 11. Locking nut; 12. Limiting sealing gasket; 13. Annular groove; 14. Lower support ring; 15. Upper sealing ring. Detailed Implementation
[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-4 In this utility model, a piston includes a piston body 1. Multiple reinforcing plates 2 are fixedly connected to the inner bottom wall of the piston body 1. Each reinforcing plate 2 has a handle hole 3 on one of its opposite sides. A groove 5 is formed on the upper surface of the piston body 1. A threaded connecting sleeve 6 is fixedly connected to the inner wall of the groove 5. A threaded connecting head 4 is threadedly connected to the inner ring of the threaded connecting sleeve 6. Two annular grooves 13 are formed on the outer surface of the piston body 1. An upper sealing ring 15 and a lower support ring 14 are respectively provided inside the two annular grooves 13. A connecting rod 7 is fixedly connected to the bottom end of the threaded connecting head 4. By setting the reinforcing plates 2, the structural strength of the piston body 1 can be enhanced, enabling it to withstand greater pressure without easily deforming. This reduces weight while ensuring the overall strength of the piston. The handle hole 3 on the reinforcing plate 2 allows for convenient loading and unloading without adding other mechanisms.
[0021] Preferably, the bottom end of the connecting rod 7 passes through the piston body 1 and extends to the bottom of the piston body 1. A limiting piece 8 is fixedly connected to the outer surface of the connecting rod 7. A connecting plate 9 is sleeved on the outer surface of the connecting rod 7. Multiple connecting holes 10 are opened on the bottom surface of the connecting plate 9. A locking nut 11 is provided below the connecting rod 7. The outer surface of the locking nut 11 is adapted to the outer surface of the bottom end of the connecting rod 7. The limiting piece 8 is located above the locking nut 11. By setting the limiting piece 8, it can limit the connection when connected and installed with the connecting plate 9. By using the connecting plate 9 and the connecting holes 10, and cooperating with the locking nut 11, it can be flexibly connected and installed with other mechanical parts.
[0022] Preferably, a limiting sealing gasket 12 is fixedly connected to the inner bottom wall of the threaded connecting sleeve 6. The upper surface of the limiting sealing gasket 12 is in close contact with the bottom surface of the threaded connecting head 4. The outer surface of the upper sealing ring 15 and the outer surface of the lower support ring 14 are in close contact with the inner walls of the two annular grooves 13, respectively. By setting the limiting sealing gasket 12, the threaded connecting sleeve 6 and the threaded connecting head 4 can be installed, sealed, and buffered, making the seal tighter. By setting the annular grooves 13, the upper sealing ring 15 and the lower support ring 14 can be installed, which will make the piston body 1 fit tightly with the inner wall of the launching tube, thereby pushing the piston to launch along the predetermined pipeline.
[0023] The working principle of this utility model is as follows:
[0024] In use, the piston body 1 is first strengthened by multiple reinforcing plates 2, which enables it to withstand greater pressure and is not easily deformed. Then, the handle holes 3 provided on the reinforcing plates 2 can be used to facilitate the handling and installation of the piston body 1. Next, the rotation of the threaded connector 4 inside the threaded connector sleeve 6 can connect the piston body 1 with the connecting rod 7, which will make it easier to connect and disassemble the piston body 1 with other components.
[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
[0027] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.
Claims
1. A piston comprising a piston body (1), characterized in that: The inner bottom wall of the piston body (1) is fixedly connected with a plurality of reinforcing plates (2), the side face of each reinforcing plate (2) away from each other is provided with a handle hole (3), the upper surface of the piston body (1) is provided with a groove (5), the inner wall of the groove (5) is fixedly connected with a threaded connecting sleeve (6), the inner circle of the threaded connecting sleeve (6) is threadedly connected with a threaded connecting head (4), the outer surface of the piston body (1) is provided with two annular clamping grooves (13), the inner part of the two annular clamping grooves (13) is respectively provided with an upper sealing ring (15) and a lower supporting ring (14), and the bottom end of the threaded connecting head (4) is fixedly connected with a connecting rod (7).
2. A piston as claimed in claim 1, characterized in that: The bottom end of the connecting rod (7) penetrates the piston body (1) and extends below the piston body (1), and the outer surface of the connecting rod (7) is fixedly connected with a limiting sheet (8).
3. A piston as claimed in claim 1 wherein: The outer surface of the connecting rod (7) is sleeved with a connecting disc (9), and the bottom surface of the connecting disc (9) is provided with a plurality of connecting holes (10).
4. A piston as claimed in claim 2, wherein: The lower part of the connecting rod (7) is provided with a locking nut (11), the outer surface of the locking nut (11) is matched with the outer surface of the bottom end of the connecting rod (7), and the limiting sheet (8) is located above the locking nut (11).
5. A piston as claimed in claim 1 wherein: The inner bottom wall of the threaded connecting sleeve (6) is fixedly connected with a limiting sealing gasket (12), and the upper surface of the limiting sealing gasket (12) is in close contact with the bottom surface of the threaded connecting head (4).
6. A piston as claimed in claim 1 wherein: The outer surface of the upper sealing ring (15) and the outer surface of the lower supporting ring (14) are respectively in close contact with the inner walls of the two annular clamping grooves (13).