A press-in core structure
Patent Information
- Application Number
- CN202522640613.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-12-12
AI Technical Summary
该结构装配较为复杂，在装配时较为繁琐，所以目前该结构的零件成本和装配成本较高
[0006] The beneficial effects of this utility model are as follows: the intermediate body and sealing plate are designed in a split manner. When connecting them, the intermediate body only needs to be embedded into the embedding groove of the sealing plate to obtain the core body. This simplifies the sealing connection of the core body, reduces the number of parts, reduces assembly and processing steps, and reduces production costs.
Smart Images
Figure CN224859599U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of turbochargers, and in particular to a press-fitted core structure. Background Technology
[0002] As a crucial component of high-end automotive engines, the turbocharger's primary function is to increase the intake air density, resulting in more complete fuel combustion and increased engine power. A typical turbocharger consists of three main parts: the turbine housing, the compressor housing, and the core. The core connects the turbine and compressor, providing rotational support for both. Because turbochargers operate at extremely high speeds, typically ranging from tens of thousands to hundreds of thousands of revolutions per minute, the core, as its rotating rotor, requires stringent lubrication systems. This necessitates stable sealing of the lubrication system even at high speeds. To ensure this stable sealing, a sealing plate is typically installed at the compressor end of the core to seal the oil passages.
[0003] like Figure 1 , Figure 2 As shown, in existing structures, the sealing plate is typically sealed using a sealing ring, and then fixedly connected using a retaining ring or bolts. This structure is relatively complex and cumbersome to assemble, resulting in high component and assembly costs. Utility Model Content
[0004] The purpose of this invention is to design a core structure for embedding in the core to solve the above problems.
[0005] This utility model achieves the above objectives through the following technical solutions: An embedded core structure includes: an intermediate body, a sealing plate, and a connector. The intermediate body and the sealing plate are fixedly connected by the connector. The connector includes a fitting ring, an embedding groove, a first connecting platform, and a second connecting platform. The fitting ring and the intermediate body are integrally formed by die casting. The embedding groove is disposed on the sealing plate, and the outer wall of the fitting ring is in extrusion contact with the embedding groove. The first connecting platform and the second connecting platform are respectively disposed on the intermediate body and the sealing plate, and are in extrusion contact with each other.
[0006] The beneficial effects of this utility model are as follows: the intermediate body and sealing plate are designed in a split manner. When connecting them, the intermediate body only needs to be embedded into the embedding groove of the sealing plate to obtain the core body. This simplifies the sealing connection of the core body, reduces the number of parts, reduces assembly and processing steps, and reduces production costs. Attached Figure Description
[0007] Figure 1 It is the core structure of existing technology; Figure 2It is the second core structure of existing technology; Figure 3 This is a schematic diagram of the structure of a core body for pressing and embedding according to the present invention; Figure 4 This is a schematic diagram of the tooth profile of the annular groove structure of the embedded slot in the core body structure of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the tooth profile of the annular groove structure of the embedded slot in the core body structure of the present invention. Figure 2 ; Figure 6 This invention relates to a threaded joint in an embedded core structure for a grooved groove. Schematic diagram of tooth structure Figure 3 ; The corresponding figure labels are: 1-Intermediate body, 2-Sealing plate, 3-Matching ring, 4-Embedded groove, 5-First connecting platform, 6-Second connecting platform, 7-Avoidance ring groove, 8-Annular groove structure, 9-Triangular structure, 10-Trapezoidal structure, 11-Right-angled trapezoidal structure, 12-First waist edge, 13-Second waist edge, 14-Third waist edge, 15-Fourth waist edge, 16-Sealing ring, 17-Sealing plate screw, 18-Angled retaining ring. Detailed Implementation
[0008] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0009] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0010] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0011] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0012] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0013] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0014] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0015] like Figures 3-6 As shown, a die-embedded core structure includes: an intermediate body 1, a sealing plate 2, and a connector. The intermediate body 1 and the sealing plate 2 are both die-cast and are fixedly connected by the connector.
[0016] The connector includes a fitting ring 3, an embedding groove 4, a first connecting platform 5, and a second connecting platform 6. The fitting ring 3 and the intermediate body 1 are integrally formed by die casting. The embedding groove 4 is disposed on the sealing plate 2, and the outer wall of the fitting ring 3 is in extrusion contact with the embedding groove 4. The first connecting platform 5 and the second connecting platform 6 are disposed on the intermediate body 1 and the sealing plate 2, respectively, and are in extrusion contact.
[0017] The first connecting platform 5 is equipped with a clearance ring groove 7, which can reduce the machining allowance.
[0018] The inner wall of the embedding groove 4 is recessed with an annular groove structure 8, and multiple annular groove structures 8 are arranged in an array along the central axis of the embedding groove 4.
[0019] like Figure 4 As shown, the tooth profile of the annular groove structure 8 is a triangular structure 9.
[0020] like Figure 5 As shown, the tooth shape of the annular groove structure 8 is a trapezoidal structure 10. The distance between the upper base of the trapezoidal structure 10 and the central axis of the embedding groove 4 is greater than the distance between the lower base of the trapezoidal structure 10 and the central axis of the embedding groove 4. The acute angle between the first waist 12 of the trapezoidal structure 10 and the central axis of the embedding groove 4 is smaller than the acute angle between the second waist 13 of the trapezoidal structure 10 and the central axis of the embedding groove 4. The direction from the second waist 13 to the first waist 12 is the moving direction when the fitting ring 3 is embedded and installed into the embedding groove 4. The angle between the first waist 12 and the second waist 13 is in the range of 0-60°, which is beneficial to the embedding of the fitting ring 3 during extrusion deformation.
[0021] like Figure 6 As shown, the tooth profile of the annular groove structure 8 is a right-angled trapezoidal structure 11. The direction from the third waist 14 to the fourth waist 15 of the right-angled trapezoidal structure 11 is the moving direction when the fitting ring 3 is inserted into the insertion groove 4. The angle between the third waist 14 and the central axis of the insertion groove 4 is a right angle to prevent the fitting ring 3 from coming out after being inserted.
[0022] During assembly, the fitting ring 3 of the sealing plate 2 is deformed by the extrusion of the conical mandrel and embedded into the embedding groove 4 on the intermediate body 1, thus completing the connection between the sealing plate 2 and the intermediate body 1.
[0023] By employing a press-fit process, the sealing connection of the core is simplified, the number of parts is reduced, assembly steps are simplified, and production costs are reduced.
[0024] The technical solution of this utility model is not limited to the specific embodiments described above. All technical modifications made based on the technical solution of this utility model shall fall within the protection scope of this utility model.
Claims
1. A core structure for pressing and embedding, characterized in that, include: The intermediate body, the sealing plate, and the connector are fixedly connected by the connector. The connector includes a fitting ring, an embedding groove, a first connecting platform, and a second connecting platform. The fitting ring and the intermediate body are integrally formed by die casting. The embedding groove is disposed on the sealing plate, and the outer wall of the fitting ring is in extrusion contact with the embedding groove. The first connecting platform and the second connecting platform are respectively disposed on the intermediate body and the sealing plate, and the first connecting platform and the second connecting platform are in extrusion contact.
2. The embedded core structure according to claim 1, characterized in that, The first connecting platform is equipped with a clearance ring groove.
3. The embedded core structure according to claim 1, characterized in that, The inner wall of the embedding groove is recessed with an annular groove structure, and multiple annular groove structures are arranged in an array along the central axis of the embedding groove.
4. The embedded core structure according to claim 3, characterized in that, The tooth profile of the annular groove structure is triangular.
5. The embedded core structure according to claim 3, characterized in that, The tooth profile of the annular groove structure is a trapezoidal structure. The distance between the upper base of the trapezoid and the central axis of the insertion groove is greater than the distance between the lower base of the trapezoid and the central axis of the insertion groove. The acute angle between the first waist of the trapezoid and the central axis of the insertion groove is smaller than the acute angle between the second waist of the trapezoid and the central axis of the insertion groove. The direction from the second waist to the first waist is the direction of movement when the fitting ring is inserted into the insertion groove. The angle between the first waist and the second waist ranges from 0 to 60°.
6. The embedded core structure according to claim 3, characterized in that, The tooth profile of the annular groove structure is a right-angled trapezoidal structure. The direction from the third waist to the fourth waist of the right-angled trapezoidal structure is the direction of movement when the fitting ring is inserted into the insertion groove. The angle between the third waist and the central axis of the insertion groove is a right angle.