Structure for preventing piston insert ring from falling off

Abstract

The utility model is suitable for the field of piston manufacturing, and particularly relates to a structure for preventing a piston insert ring from falling off, which comprises a piston insert ring arranged on a piston body, the piston insert ring is embedded in the piston body, the piston insert ring comprises an insert ring body and a fixing part, and the fixing part and the insert ring body are integrally formed. The fixing part and the piston body are fixedly connected in an embedded mode. The fixing part comprises an extension layer and a fixing layer, the fixing layer is arranged on the outer side of the extension layer, and the fixing layer and the extension layer are integrally formed. The joint of the fixed layer and the extension layer is subjected to fillet treatment; and the sections of the upper and lower ends of the fixed layer are barb-shaped. The sections of the upper end and the lower end of the fixing layer are in the barb shape, the fixing layer is arranged to be in the barb shape, the upper face and the lower face of the fixing layer respectively generate reverse hooking force, and therefore the piston insert ring can be tightly fixed in the insert ring body through the structure, and the function of preventing the piston insert ring from falling off is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of pistons, and specifically relates to a structure for preventing piston rings from falling off. Background Technology

[0002] Piston inserts are components that are integrated with the piston ring groove area (or head) through an aluminizing casting process. They are mainly used to enhance the durability of the piston under high temperature and high pressure environments and are commonly found in high-performance engines or diesel engines. For example, cast iron or alloy inserts are inlaid in the ring groove of aluminum alloy pistons to reduce wear and improve lifespan.

[0003] The existing piston insert has a U-shaped cross-section. During the subsequent manufacturing process of the piston, if the cutting force of the cutting tool exceeds the bonding force of the insert, it will cause the insert to separate from the body, resulting in scrap and damage to the cutting tool. Secondly, when the engine is running, the insert will be subjected to the combined effects of heat and various forces, gradually detaching from the body, which will then cause piston damage and engine failure.

[0004] In conclusion, there is an urgent need for a new piston ring structure to solve the problem that existing piston ring structures are prone to detaching from the piston body when subjected to vibration or impact. Utility Model Content

[0005] This utility model provides a structure to prevent piston rings from falling off, aiming to solve the problem that existing piston ring structures are prone to falling off from the piston body when subjected to vibration or impact.

[0006] The present invention is implemented as follows:

[0007] A structure for preventing piston rings from falling off includes:

[0008] The piston body has a piston ring embedded in it. The piston ring includes a ring body and a fixing part. The fixing part is integrally formed with the ring body and is fixedly connected to the piston body by embedding.

[0009] Furthermore, the fixing part includes an extension layer and a fixing layer, with the fixing layer disposed on the outside of the extension layer, and the fixing layer and the extension layer being integrally formed.

[0010] Furthermore, the connection between the fixing layer and the extension layer is rounded, and the upper and lower ends of the fixing layer have a hook-shaped cross-section.

[0011] The beneficial effects achieved by this utility model are:

[0012] This invention features a hook-shaped cross-section at both ends of the fixing layer, creating a counter-hooking force on both the top and bottom surfaces. This structure ensures that the piston ring is firmly fixed to the ring body, preventing it from falling off. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure for preventing piston rings from falling off, provided by this utility model.

[0014] Figure 2 This is a partially enlarged schematic diagram of A provided by this utility model.

[0015] Icon labels:

[0016] 100. A structure to prevent the piston ring from falling off;

[0017] 101. Piston body; 102. Piston ring; 103. Fixing part; 104. Ring body; 105. Extension layer; 106. Fixing layer. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] The cross-sections at the top and bottom of the fixing layer are barbed. By setting the fixing layer in a barbed shape, a counter-hooking force is generated on both the top and bottom of the fixing layer. In this way, the piston ring will be tightly fixed in the ring body through this structure, which can prevent it from falling off.

[0020] Reference Figure 1 and Figure 2 In this embodiment of the present invention, a structure 100 for preventing piston ring 102 from falling off is provided, comprising: a piston body 101, wherein the piston body 101 is provided with piston ring 102, the piston ring is embedded in the piston body 101, the piston ring 102 includes a ring body 104 and a fixing part 103, the fixing part 103 is integrally formed with the ring body 104, and the fixing part 103 is fixedly connected to the piston body 101 by inlay. More specifically, the fixing part 103 includes an extension layer 105 and a fixing layer 106, the fixing layer 106 is disposed on the outside of the extension layer 105, the fixing layer 106 is integrally formed with the extension layer 105, the corners at the connection between the fixing layer 106 and the extension layer 105 are rounded, and the upper and lower ends of the fixing layer 106 are barbed.

[0021] In this embodiment, a novel piston ring 102 is embedded in the piston body 101. Compared with the existing piston ring 102, by adding a fixing part 103, the contact area between the piston ring 102 and the piston body 101 is increased, thereby increasing the friction between the piston ring 102 and the piston body 101, and thus making the piston ring 102 securely fixed in the piston body 101. By adding the fixing part 103, the fixing part 103 provides a force that hooks the piston ring 102 back into the piston body 101, so that the fixing part 103 can be better embedded in the piston body 101.

[0022] Specifically, the piston ring 102 is fixed inside the piston body 101 by embedding. The piston ring 102 is close to the cylinder wall to form a dynamic seal, preventing the high-temperature and high-pressure gas in the combustion chamber from leaking into the crankcase during the compression and power strokes. By providing the piston ring 102, a good seal is achieved between the piston and the cylinder, thereby ensuring the cylinder compression pressure, making the combustion more complete, thus providing strong power output, improving fuel economy, and reducing harmful emissions.

[0023] In this embodiment, the piston ring includes a ring body 104 and a fixing part 103. The ring body 104 and the fixing part 103 are integrally formed. The fixing part 103 is fixedly connected to the piston body 101 by inlay. The fixing part 103 is used to fix the piston ring 102 to the piston body 101. The cross-sectional shape of the fixing part 103 can be dovetail-shaped, barb-shaped, or other shapes that serve as hooks. In this embodiment, a barb shape is preferred. It should be noted that no matter what shape the fixing part 103 adopts, the corners of the fixing part 103 are always rounded. By using rounding, the stress of the fixing part 103 can be dispersed, avoiding stress concentration and cracking.

[0024] The fixing part 103 specifically includes an extension layer 105 and a fixing layer 106. The fixing layer 106 is fixedly connected to the piston body 101. The extension layer 105 extends into the interior of the piston body 101 and is disposed on the outside of the fixing layer 106. The extension layer 105 and the fixing layer 106 are integrally formed. The connection between the fixing layer 106 and the extension layer 105 is rounded. The rounded corners avoid stress concentration, which can increase the service life of the device, reduce the defect rate, and ensure the quality of the piston ring 102. Furthermore, the cross-sections of the upper and lower ends of the fixing layer 106 are barbed. By setting the fixing layer 106 as barbed, a counter-hooking force is generated on the upper and lower surfaces of the fixing layer 106. In this way, the piston ring 102 will be tightly fixed in the ring body 104 through this structure, which can prevent it from falling off.

[0025] In the description of this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] Furthermore, the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for preventing piston rings from falling off, characterized in that, include: The piston body has a piston ring embedded in it. The piston ring includes a ring body and a fixing part. The fixing part is integrally formed with the ring body and is fixedly connected to the piston body by embedding.

2. The structure for preventing piston ring detachment according to claim 1, characterized in that, The fixing part includes an extension layer and a fixing layer. The fixing layer is disposed on the outside of the extension layer and the fixing layer is integrally formed with the extension layer.

3. The structure for preventing piston ring detachment according to claim 2, characterized in that, The connection between the fixed layer and the extension layer is rounded, and the upper and lower ends of the fixed layer are hook-shaped.

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