A variable-section nozzle ring for adjusting blade opening by driving a mounting plate

Abstract

The present invention discloses a variable-section nozzle ring for adjusting the blade opening by driving a mounting disk, comprising: a fixed disk provided with a through hole, the through hole being provided with a limiting hole extending radially therethrough, a guide pin being installed in the limiting hole; a mounting disk, the mounting disk being an annular disk-shaped structure, mounted in the fixed disk, a sliding groove extending circumferentially provided on the side surface of the mounting disk, the sliding groove being fan-shaped, one end of the guide pin being embedded in the sliding groove; further comprising a plurality of blades, the blades being provided with blade shafts; the mounting disk being provided with a plurality of axial holes along the circumference, the blade shafts being installed in the axial holes; limiting the maximum and minimum openings of the blades by the two side surfaces of the sliding groove on the mounting disk is conducive to simplifying the structure and reducing the number of parts; adjusting the blade opening by driving the mounting disk can effectively reduce the transmission ratio compared with adjusting by driving the toggle disk.

Description

Technical Field

[0001] The invention relates to the field of superchargers, in particular to a variable-section nozzle ring for driving a mounting plate to adjust blade openings. Background Art

[0002] With technological advancements, the demands placed on automotive engines are becoming increasingly stringent. They must not only deliver powerful power but also extremely high efficiency and sufficiently clean emissions. This requires the engine to operate at its most efficient state under all operating conditions, thus satisfying the intake air volume requirements under each operating state. This requires that all engine components be able to adapt to varying operating conditions. Examples include the familiar variable valve timing / lift and variable intake manifold technologies. Another example is the VGT (variable geometry turbocharger) technology commonly found in diesel engines. Regarding the structural drive structure of VGT components, relevant companies in the industry currently utilize a VGT shift fork that drives a shift plate, which in turn rotates the shift fork to adjust the vane opening. This complex structure utilizes a nozzle ring structure in which a mounting plate and rear cover serve as fixed supports during the vane opening and closing process. Summary of the Invention

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the title of the invention of this application to avoid blurring the purpose of this section, the abstract of the specification and the title of the invention, and such simplifications or omissions cannot be used to limit the scope of the invention.

[0004] In view of the above problems and / or the problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the technical problem to be solved by the present invention is that relevant companies in the industry all use the VGT fork to drive the toggle plate, and the toggle plate drives the fork to rotate to adjust the blade opening. The nozzle ring structure, during the blade switching process, the mounting plate and the rear cover serve as a fixed support structure, and the structure is complex.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a variable-section nozzle ring for adjusting the blade opening by driving a mounting plate, comprising: a fixed plate having a through hole therethrough, the through hole being provided with a radially extending limiting hole, the limiting hole being provided with a guide pin;

[0007] The mounting plate is an annular disc structure and is installed in the fixed plate. A sliding groove extending along the circumferential direction is provided on the side of the mounting plate. The sliding groove is fan-shaped, and one end of the guide pin is embedded in the sliding groove.

[0008] As a preferred solution of the variable-section nozzle ring for adjusting the blade opening by driving the mounting disk as described in the present invention, it further comprises a plurality of blades, each of which is provided with a blade shaft; the mounting disk is provided with a plurality of shaft holes along the circumference, and the blade shaft is installed in the shaft holes.

[0009] As a preferred solution of the variable-section nozzle ring for adjusting the blade opening of the drive mounting disk of the present invention, the fixed disk is provided with an annular boss, a fork groove is provided on the annular boss along the circumference, a fork is connected to the fork groove, a protrusion is provided at one end of the fork, and a mounting hole is provided at the other end, the protrusion is embedded in the fork groove, and the blade shaft passes through the mounting hole and is fixedly connected.

[0010] As a preferred solution of the variable-section nozzle ring for adjusting the blade opening by driving the mounting disk as described in the present invention, it further includes a rear cover, which is an annular disk structure, and the rear cover is located on one side of the fixed disk. The blades are installed between the fixed disk and the rear cover, and the fixed disk and the rear cover are connected by fixing parts, and the fixing parts are evenly distributed between the rear cover and the fixed disk.

[0011] As a preferred solution of the variable cross-section nozzle ring for adjusting the blade opening of the driving mounting plate of the present invention, the mounting plate is provided with a shifting protrusion, and the shifting protrusion is connected to a shift fork member.

[0012] As a preferred solution of the variable cross-section nozzle ring for adjusting the blade opening of the driving mounting plate of the present invention, it further includes a fork member, and a connecting hole is provided at one end of the fork member.

[0013] As a preferred solution of the variable cross-section nozzle ring for adjusting the blade opening by driving the mounting plate of the present invention, a groove is provided at one end of the fork member away from the connecting hole.

[0014] As a preferred solution of the variable-section nozzle ring for adjusting the blade opening of the drive mounting plate of the present invention, the annular boss is provided with an avoidance groove, the toggle protrusion is located in the avoidance groove and is connected to a fixed shaft, and one end of the fixed shaft is embedded in the groove.

[0015] As a preferred solution of the variable cross-section nozzle ring for adjusting the blade opening by driving the mounting plate of the present invention, there are three limiting holes, which are distributed along the circumference of the fixed plate.

[0016] As a preferred solution of the variable cross-section nozzle ring for adjusting the blade opening of the driving mounting plate of the present invention, one end surface of the fixing plate is provided with a frustum, and the limiting hole is provided on the frustum.

[0017] The beneficial effects of the present invention are as follows: a plurality of grooves are evenly distributed on the rear cover for cooperating with the shift fork. During the movement of the blade shaft, the shift fork slides radially in the groove. During the opening and closing process, the blade not only rotates around the blade shaft, but also rotates around the axis of the mounting plate.

[0018] The circumferential surface of the rear cover is provided with a plurality of radial limiting through holes, and the outer side of the circumferential surface of the mounting plate is provided with a plurality of radial sliding grooves. The limiting through holes on the rear cover correspond to the sliding grooves on the mounting plate one by one, and the guide pins are fitted with clearances between the through holes, and the guide pins are fitted with clearances between the rolling grooves. The guide pins limit the axial movement of the mounting plate, and the cylindrical surface of the rear cover limits the radial movement of the mounting plate. The mounting plate can rotate circumferentially, thereby realizing the functions of fixing the rear cover and rotating the mounting plate.

[0019] There is a boss on the radial direction of the mounting plate for installing the VGT adjustment pin, which makes it easy to place the rotation center of the VGT adjustment pin on the inside and reduce the radial size of the nozzle ring;

[0020] The maximum and minimum opening of the blades are limited by the two sides of the sliding groove on the mounting plate, which is conducive to simplifying the structure and reducing the number of parts;

[0021] The blade opening is adjusted by driving the mounting plate, which effectively reduces the transmission ratio compared to adjusting it by driving the dial. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0023] Figure 1 A schematic structural diagram of a variable-section nozzle ring for adjusting blade openings with a drive mounting plate according to an embodiment of the present invention;

[0024] Figure 2 A schematic cross-sectional view of a fixed disk in a variable-section nozzle ring for adjusting blade openings using a drive mounting disk according to an embodiment of the present invention;

[0025] Figure 3 A schematic structural diagram of a mounting plate in a variable-section nozzle ring for adjusting blade openings using a driving mounting plate according to an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a fixed disk in a variable-section nozzle ring for adjusting blade openings with a driven mounting disk according to an embodiment of the present invention;

[0027] Figure 5A schematic structural diagram of a fixed disk and a rear cover in a variable-section nozzle ring with a drive mounting disk for adjusting blade opening according to an embodiment of the present invention;

[0028] Figure 6 A schematic cross-sectional view of a variable-section nozzle ring for adjusting blade openings by a drive mounting plate according to an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the transmission relationship of a variable-section nozzle ring for adjusting the blade opening by driving a mounting plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, these schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0033] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Example

[0035] Reference Figures 1 to 7 The present embodiment provides a variable-section nozzle ring for adjusting the blade opening by driving a mounting plate, including a fixed plate 100, wherein the fixed plate 100 is an annular disc-shaped structure for mounting and fixing in the middle position of the VGT assembly, and is provided with a through hole A to form a ring. The through hole A is provided with a radially extending limiting hole 101, and a guide pin 200 is installed in the limiting hole 101. The guide pin 200 is clearance-fitted with the limiting hole 101, and the guide pin 200 can move axially in the limiting hole 101.

[0036] The mounting plate 300 is also included. The mounting plate 300 is an annular disc-shaped structure that is mounted within the fixed plate 100 and is loosely fitted with the through hole A of the fixed plate 100. A circumferentially extending sliding groove 301 is provided on the side of the mounting plate 300. The sliding groove 301 is fan-shaped, and one end of the guide pin 200 is embedded in the sliding groove 301. The mounting plate 300 can rotate within the fixed plate 100, and the range of rotation is determined by the range of motion of the guide pin 200 within the sliding groove 301. The maximum and minimum openings of the blades are limited by the two side surfaces of the sliding groove 301 on the mounting plate. The number of sliding grooves 301 is the same as that of the limiting holes 101, and their positions correspond to each other.

[0037] Furthermore, the mounting plate 300 includes a plurality of blades 400, each of which is provided with a blade shaft 401. The mounting plate 300 is provided with a plurality of shaft holes 302 along the circumference, and the blade shaft 401 is installed in the shaft hole 302. The blade 400 can rotate with the shaft hole 302 as the center of the circle.

[0038] Furthermore, the fixed disk 100 is provided with an annular boss 102, and a fork groove 102a is provided along the circumference of the annular boss 102. The fork groove 102a is connected to the fork 500. A protrusion 501 is provided at one end of the fork 500, and a mounting hole 502 is provided at the other end. The protrusion 501 is embedded in the fork groove 102a. The fork groove 102a can swing in the fork groove 102a with the protrusion 501 as the origin. At the same time, the blade shaft 401 passes through the mounting hole 502 and is fixedly connected. When the fork 500 swings, the mounting hole 502 rotates with the blade shaft 401, thereby adjusting the opening of the blade.

[0039] Specifically, during the movement of the blade shaft, the shift fork slides radially in the shift fork slot 102a. During the switching process of the blade, the blade not only rotates around the blade shaft, but also rotates around the axis of the mounting plate.

[0040] It should be noted that the back cover 600 is also included. The back cover 600 is an annular disc structure and is located on one side of the fixed disc 100. The blades 400 are installed between the fixed disc 100 and the back cover 600. The fixed disc 100 and the back cover 600 are connected by fixing members 601. The fixing members 601 are evenly distributed between the back cover 600 and the fixed disc 100. The fixing members 601 are rod-shaped structures that securely connect the back cover 600 to the fixed disc 100. The mounting disc 300 is provided with a shifting protrusion 303, which is connected to a shifting fork 304. The shifting fork 304 has a connecting hole 304a at one end. The operating principle of the shifting fork 304 is conventional and will not be described in detail.

[0041] Preferably, a groove 304b is provided at one end of the fork member 304 away from the connecting hole 304a. The annular boss 102 is provided with an avoidance groove 102b, and the shifting protrusion 303 is located in the avoidance groove 102b and is connected to the fixed shaft 103. One end of the fixed shaft 103 is embedded in the groove 304b, which facilitates the operation of the fork member 304.

[0042] Preferably, three limiting holes 101 are provided, and preferably, they are evenly distributed along the circumference of the fixing plate 100 .

[0043] In order to facilitate the installation of the guide pin 200 , a truncated platform 104 is provided on one end surface of the fixing plate 100 , and the limiting hole 101 is provided on the truncated platform 104 .

[0044] When the driving fork 304 rotates, the mounting plate is driven to rotate via the fixed shaft 103 , and the blade opening changes during the rotation of the mounting plate.

[0045] As shown in Table 1 and Figure 7 As shown, the drive shift plate structure and the drive mounting plate structure have a smaller angle transmitted to the shift fork at the same drive angle. If the required transmission ratio is larger, the other dimensions in the transmission chain can be adjusted to meet the requirements.

[0046] Table 1:

[0047] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0048] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0049] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A variable-section nozzle ring for adjusting blade opening by driving a mounting plate, characterized in that: include, The fixed disk (100) is provided with a through hole (A) extending therethrough, the through hole (A) is provided with a radially extending limiting hole (101), a guide pin (200) is installed in the limiting hole (101); the guide pin (200) is clearance-matched with the limiting hole (101), and the guide pin (200) can move axially in the limiting hole (101); a mounting plate (300), the mounting plate (300) being an annular disc structure and mounted in the fixed plate (100); a sliding groove (301) extending in a circumferential direction being provided on a side surface of the mounting plate (300); the sliding groove (301) being fan-shaped; one end of the guide pin (200) being embedded in the sliding groove (301); It also includes a plurality of blades (400), each of which is provided with a blade shaft (401); the mounting plate (300) is provided with a plurality of shaft holes (302) along the circumference, and the blade shaft (401) is installed in the shaft holes (302); The fixed disk (100) is provided with an annular boss (102), a shift fork groove (102a) is provided along the circumference of the annular boss (102), the shift fork groove (102a) is connected to the shift fork (500), one end of the shift fork (500) is provided with a protrusion (501), and the other end is provided with a mounting hole (502), the protrusion (501) is embedded in the shift fork groove (102a), and the blade shaft (401) passes through the mounting hole (502) and is fixedly connected; During the movement of the blade shaft (401), the shift fork (500) swings in the shift fork slot (102a). During the switching process of the blade (400), the blade (400) not only rotates around the blade shaft (401), but also rotates around the axis of the mounting plate (300).

2. The variable cross-section nozzle ring for adjusting the blade opening by driving the mounting plate according to claim 1, characterized in that: The invention also includes a back cover (600), which is an annular disc structure. The back cover (600) is located on one side of the fixed disc (100). The blades (400) are installed between the fixed disc (100) and the back cover (600). The fixed disc (100) and the back cover (600) are connected via fixing members (601). The fixing members (601) are evenly distributed between the back cover (600) and the fixed disc (100).

3. The variable cross-section nozzle ring for adjusting the blade opening by driving the mounting plate according to claim 2, characterized in that: The mounting plate (300) is provided with a toggle protrusion (303).

4. The variable cross-section nozzle ring for adjusting blade opening by driving the mounting plate according to claim 3, characterized in that: It also includes a shift fork member (304), one end of which is provided with a connection hole (304a).

5. The variable cross-section nozzle ring for adjusting blade opening by driving the mounting plate according to claim 4, characterized in that: A groove (304b) is provided at one end of the fork member (304) away from the connecting hole (304a).

6. The variable cross-section nozzle ring for adjusting blade opening by driving the mounting plate according to claim 5, characterized in that: The annular boss (102) is provided with an avoidance groove (102b), the toggling protrusion (303) is located in the avoidance groove (102b) and is connected to a fixed shaft (103), and one end of the fixed shaft (103) is embedded in the groove (304b).

7. The variable cross-section nozzle ring for adjusting the blade opening by driving the mounting plate according to any one of claims 1 or 3 to 6, characterized in that: Three limiting holes (101) are provided and are evenly distributed along the circumference of the fixing plate (100).

8. The variable cross-section nozzle ring for adjusting blade opening by driving the mounting plate according to claim 7, characterized in that: One end surface of the fixed disk (100) is provided with a truncated platform (104), and the limiting hole (101) is provided on the truncated platform (104).

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