Volute assembling component and turbocharger

Abstract

The utility model belongs to the technical field, and discloses a volute assembling component and a turbocharger, the volute assembling component comprises a volute, a rocker arm air door, a transition connecting plate and a lining, the lining is arranged on the volute, the lining is arranged at the end of the rocker arm air door in a penetrating mode, and a connector is arranged at the end, penetrating through the lining, of the rocker arm air door in a protruding mode. A connecting hole is formed in the transition connecting plate, the connector penetrates through the connecting hole and is fixedly connected to the connecting hole, the diameter of the end face of the end, facing the transition connecting plate, of the connector is smaller than that of the end, connected with the rocker air door, of the connector, and the aperture of the end, back to the connector, of the connecting hole is smaller than that of the end, facing the connector, of the connecting hole. The turbocharger comprises the volute assembling assembly. The volute assembling assembly and the turbocharger are simple in structure and high in practicability, reverse installation of the transition connecting plate can be effectively avoided, assembling reworking and scrapped parts are avoided, production efficiency is guaranteed, and unnecessary cost increase is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of turbochargers, in particular to a volute assembly component and a turbocharger. Background Art

[0002] The turbocharger uses the inertial force of the exhaust gas discharged by the engine to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller, which pressurizes the air sent from the air filter pipe and pressurizes it into the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, and the impeller compresses more air into the cylinder. The increase in air pressure and density can burn more fuel, increase the fuel amount and adjust the engine speed accordingly, thereby effectively improving the engine's output power.

[0003] With the increasing demand of users for engine power and economy, turbocharging technology is increasingly being applied to various engines, among which turbochargers with wastegate structures are widely used. A bushing is provided on the volute of the turbocharger, and a rocker arm damper passes through the bushing to connect to the volute. One end of the rocker arm damper passing through the bushing is fixedly connected to the transition connecting plate. Specifically, the rocker arm damper and the transition connecting plate are connected by fitting through the axial hole and fixed by welding. In the existing production and assembly process, due to negligence of the operator and other reasons, the rocker arm damper and the transition connecting plate may be installed reversely. If not discovered in time, product rework and other situations may occur. In severe cases, scrapped parts may be generated, which affects production efficiency and increases production costs. Utility Model Content

[0004] The utility model aims to provide a volute assembly component and a turbocharger, which have a simple structure and strong practicability and can effectively avoid reverse installation of a transition connecting plate.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A volute assembly assembly comprises a volute, a rocker damper, a transition connecting plate and a bushing, wherein the bushing is arranged on the volute, the end of the rocker damper is penetrated by the bushing, one end of the rocker damper penetrated by the bushing is provided with a connector, a connecting hole is opened on the transition connecting plate, the connector is penetrated by the connecting hole and the connector is fixedly connected to the connecting hole; wherein,

[0007] The end face diameter of the connector facing the transition connecting plate is smaller than the end face diameter of the connector connecting the connector and the rocker arm damper, and the hole diameter of the connecting hole facing away from the connector is smaller than the hole diameter of the connecting hole facing the connector.

[0008] Preferably, the side end surface of the connecting head and the inner peripheral wall of the connecting hole are smoothly transitioned.

[0009] Preferably, the connecting head is configured as a stepped shaft, and the connecting hole is correspondingly configured as a stepped hole.

[0010] Preferably, the connecting head includes a first shaft portion provided on the rocker arm damper and a second shaft portion provided at the end of the first shaft portion, and the diameter of the first shaft portion is greater than the diameter of the second shaft portion; the connecting hole includes a first hole portion and a second hole portion which are connected to each other, and the first hole portion is opened at one end facing the connecting head, and the diameter of the first hole portion is greater than the diameter of the second hole portion.

[0011] Preferably, the connecting head is integrally formed with the end of the rocker arm damper.

[0012] Preferably, the diameter of the end surface of the connecting head and the connecting end of the rocker arm damper is smaller than the end diameter of the rocker arm damper.

[0013] Preferably, the axial length of the connecting head is greater than the axial length of the connecting hole.

[0014] Preferably, the connecting head and the connecting hole are fixed by welding.

[0015] Preferably, the fitting relationship between the connecting head and the connecting hole is an interference fit.

[0016] A turbocharger comprises the volute assembly assembly described in any one of the above items.

[0017] Beneficial effects:

[0018] The utility model provides a volute assembly component and a turbocharger, wherein the end face diameter of the connector facing the transition connecting plate is smaller than the end face diameter of the connector and the rocker arm damper connecting end, and the aperture of the connecting hole facing away from the connector is smaller than the aperture of the connecting hole facing the connector. This arrangement enables an anti-reverse installation structure to be formed between the connector and the connecting hole. If the transition connecting plate is reversely installed, that is, the small-aperture end of the connecting hole faces the connector, the connector cannot be installed in the connecting hole, thereby avoiding reverse installation of the transition connecting plate. The reverse installation can also be discovered in time, avoiding assembly rework and the generation of scrapped parts, ensuring production efficiency, and avoiding unnecessary cost increases. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the volute assembly component provided by the utility model;

[0020] Figure 2 It is an exploded view of a rocker damper and a transition connecting plate provided by an optional embodiment of the utility model;

[0021] Figure 3 It is an exploded view of a rocker arm damper and a transition connecting plate provided in an optional embodiment of the utility model.

[0022] In the figure:

[0023] 1. Volute;

[0024] 2. rocker arm damper; 21. connector; 211. first shaft portion; 212. second shaft portion;

[0025] 3. transition connecting plate; 31. connecting hole; 311. first hole portion; 312. second hole portion;

[0026] 4. Bushing. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] This embodiment provides a scroll housing 1 assembly component. Figures 1 to 3 As shown, the volute 1 assembly component includes a volute 1, a rocker damper 2, a transition connecting plate 3 and a bushing 4, wherein the bushing 4 is arranged on the volute 1, the end of the rocker damper 2 is penetrated by the bushing 4, and a connector 21 is protruded from one end of the rocker damper 2 through which the bushing 4 is penetrated, and a connecting hole 31 is opened on the transition connecting plate 3, and the connecting head 21 is penetrated by the connecting hole 31 and fixedly connected to the connecting hole 31. Among them, the end face diameter of the connecting head 21 facing the end of the transition connecting plate 3 is smaller than the end face diameter of the connecting head 21 and the rocker damper 2, and the aperture of the end of the connecting hole 31 facing away from the connecting head 21 is smaller than the aperture of the end of the connecting hole 31 facing the connecting head 21.

[0032] In this embodiment, the end face diameter of the connector 21 facing the transition connector plate 3 is smaller than the end face diameter of the connector 21 connected to the rocker arm damper 2, and the aperture of the end of the connecting hole 31 facing away from the connector 21 is smaller than the aperture of the end of the connecting hole 31 facing the connector 21. This arrangement enables an anti-reverse installation structure to be formed between the connector 21 and the connecting hole 31. If the transition connector plate 3 is reversed, that is, the small aperture end of the connecting hole 31 faces the connector 21, the connector 21 cannot be installed in the connecting hole 31, thereby avoiding the reverse installation of the transition connector plate 3. The reverse installation can also be discovered in time, avoiding assembly rework and the generation of scrapped parts, ensuring production efficiency, and avoiding unnecessary cost increases.

[0033] As an optional implementation, refer to Figure 2 As shown, the side end face of the connector 21 and the inner peripheral wall of the connecting hole 31 are smoothly transitioned. Specifically, the side end face of the connector 21 is smoothly transitioned from the end face facing one end of the connecting plate to the end face connected to the rocker arm damper 2, that is, the projection of the longitudinal section of the connector 21 is trapezoidal. The inner peripheral wall of the connecting hole 31 is smoothly transitioned from the end facing away from the connector 21 to the end facing the connector 21, that is, the projection of the longitudinal section of the connecting hole 31 is trapezoidal. Specifically, when the transition connecting plate 3 is inverted, the small aperture end of the connecting hole 31 is directly opposite to the small shaft diameter end of the connector 21, so that the connector 21 cannot be installed in the connecting hole 31, effectively avoiding the reverse installation of the transition connecting plate 3.

[0034] Optionally, the side end surface of the connector 21 and the inner wall of the connecting hole 31 can be smoothly transitioned and can also be configured as follows: the side end surface of the connector 21 and the inner wall of the connecting hole 31 are both configured as smooth curved surfaces. Such a configuration can effectively avoid stress concentration and ensure overall strength.

[0035] As an optional implementation, refer to Figure 3 As shown, the connector 21 is configured as a stepped shaft, and the connecting hole 31 is correspondingly configured as a stepped hole. The stepped shaft and the stepped hole may be configured with a stepped end face, or may be configured with a plurality of stepped end faces. In this embodiment, the stepped shaft and the stepped hole may be configured with a stepped end face. Specifically, the connector 21 includes a first shaft portion 211 provided on the rocker arm damper 2 and a second shaft portion 212 provided at the end of the first shaft portion 211, and the diameter of the first shaft portion 211 is greater than the diameter of the second shaft portion 212. The connecting hole 31 includes a first hole portion 311 and a second hole portion 312 which are connected and arranged. The first hole portion 311 is opened at one end facing the connector 21, and the second hole portion 312 is opened at one end facing away from the connector 21. The diameter of the first hole portion 311 is greater than the diameter of the second hole portion 312. Specifically, when the transition connecting plate 3 is placed upright, the second shaft portion 212 is arranged opposite to the first hole portion 311, the connector 21 is inserted into the connecting hole 31, the first shaft portion 211 is plugged into the first hole portion 311, and the second shaft portion 212 is plugged into the second hole portion 312. When the transition connecting plate 3 is placed inverted, the second shaft portion 212 is arranged opposite to the second hole portion 312, and the second shaft portion 212 cannot extend further after passing through the second hole portion 312, so that the connector 21 cannot be installed in the connecting hole 31, effectively avoiding the reverse installation of the transition connecting plate 3.

[0036] In this embodiment, the connector 21 is integrally formed with the end of the rocker arm damper 2. This arrangement is convenient for processing and avoids assembly between multiple parts to reduce production efficiency.

[0037] In this embodiment, the diameter of the end surface of the connection end of the connector 21 and the rocker damper 2 is smaller than the end diameter of the rocker damper 2. This arrangement enables the connection between the connector 21 and the rocker damper 2 to form a limiting end surface, which can abut against the transition connecting plate 3 when the connector 21 is plugged into place, and can effectively support the transition connecting plate 3.

[0038] In this embodiment, the axial length of the connector 21 is greater than the axial length of the connecting hole 31. This arrangement allows the connector 21 to fully pass through the connecting hole 31, so that the entire connecting hole 31 is sleeved on the connector 21, which is reliable and stable.

[0039] In this embodiment, the connection head 21 is fixed to the connection hole 31 by welding. The welding connection method is simple to operate, fast in connection speed, low in labor intensity, and reliable and stable in connection effect.

[0040] In this embodiment, the fitting relationship between the connector 21 and the connecting hole 31 is an interference fit, which ensures that the connector 21 can be fixed when inserted into the connecting hole 31, avoids relative movement between the connector 21 and the transition connecting plate 3, and is also conducive to the reliable completion of the subsequent welding process.

[0041] This embodiment also provides a turbocharger. The turbocharger is provided with the above-mentioned volute assembly component, so that all the beneficial effects of the above-mentioned volute assembly component can be obtained, and no further elaboration is made here.

[0042] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A volute assembly, characterized in that: The invention comprises a volute (1), a rocker damper (2), a transition connecting plate (3) and a bushing (4), wherein the bushing (4) is arranged on the volute (1), the end of the rocker damper (2) is penetrated by the bushing (4), a connecting head (21) is protruding from one end of the rocker damper (2) through which the bushing (4) is penetrated, a connecting hole (31) is opened on the transition connecting plate (3), the connecting head (21) is penetrated by the connecting hole (31) and the connecting head (21) is fixedly connected to the connecting hole (31); wherein: The diameter of the end face of the connecting head (21) facing the transition connecting plate (3) is smaller than the diameter of the end face of the connecting head (21) connected to the rocker damper (2), and the diameter of the end of the connecting hole (31) facing away from the connecting head (21) is smaller than the diameter of the end of the connecting hole (31) facing the connecting head (21).

2. The volute assembly according to claim 1, characterized in that: The side end surface of the connecting head (21) and the inner peripheral wall of the connecting hole (31) are both smoothly transitioned.

3. The volute assembly according to claim 1, characterized in that: The connecting head (21) is configured as a stepped shaft, and the connecting hole (31) is correspondingly configured as a stepped hole.

4. The volute assembly according to claim 3, characterized in that: The connecting head (21) comprises a first shaft portion (211) arranged on the rocker arm damper (2) and a second shaft portion (212) arranged at the end of the first shaft portion (211), the diameter of the first shaft portion (211) being greater than the diameter of the second shaft portion (212); the connecting hole (31) comprises a first hole portion (311) and a second hole portion (312) which are arranged in communication, the first hole portion (311) being opened at one end facing the connecting head (21), the diameter of the first hole portion (311) being greater than the diameter of the second hole portion (312).

5. The volute assembly according to claim 1, characterized in that: The connecting head (21) and the end of the rocker arm damper (2) are integrally formed.

6. The volute assembly according to claim 1, characterized in that: The diameter of the end surface of the connecting head (21) and the rocker damper (2) is smaller than the diameter of the end of the rocker damper (2).

7. The volute assembly according to claim 1, characterized in that: The axial length of the connecting head (21) is greater than the axial length of the connecting hole (31).

8. The volute assembly according to claim 1, characterized in that: The connecting head (21) and the connecting hole (31) are fixed by welding.

9. The volute assembly according to claim 1, characterized in that: The matching relationship between the connecting head (21) and the connecting hole (31) is an interference fit.

10. A turbocharger, characterized in that: A volute assembly comprising the volute assembly component described in any one of claims 1-9.

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