WO2021023216A1

WO2021023216A1 - Stator assembly and manufacturing method therefor, and hydraulic torque converter comprising stator assembly

Info

Publication number: WO2021023216A1
Application number: PCT/CN2020/107064
Authority: WO
Inventors: 张金鹏; 胡勋
Original assignee: 法雷奥凯佩科液力变矩器(南京)有限公司
Priority date: 2019-08-05
Filing date: 2020-08-05
Publication date: 2021-02-11
Also published as: JP7465949B2; CN112324884A; MX2022001613A; KR102629874B1; JP2022543311A; KR20220036367A

Abstract

A stator assembly for a hydraulic torque converter comprises: a stator (10, 10'), the stator (10, 10') comprising a stator main body (11, 11') and multiple blades (12, 12') radially extending outwards from the periphery of the stator main body (11, 11'), the stator main body (11, 11') comprising a through-hole (13, 13'), and a second end (132, 132') of the through-hole (13, 13') comprising a first flange (15, 15'); a one-way clutch (20) comprising an outer ring (21), an inner ring (22), and a wheel stop spacer accommodating portion (23) provided between the outer ring (21) and the inner ring (22) and accommodating a wheel stop spacer (24), wherein the one-way clutch (20) is at least partially mounted in the through-hole (13, 13'), and is axially supported at least by the first flange (15, 15'); and a holding plate (30) mounted on the stator main body (11, 11') on a first end side of the through-hole (13, 13'). The multiple blades (12, 12') and the stator main body (11, 11') are integrally formed, and are bent such that radially outermost ends of the multiple blades (12, 12') are inclined from a plane perpendicular to a rotation axis of the stator (10, 10'). Radially outermost ends of adjacent blades among the multiple blades (12, 12') are separated from each other. The invention also relates to a method for manufacturing the stator assembly, a hydraulic torque converter comprising the stator assembly, and a corresponding motor vehicle.

Description

Stator assembly and manufacturing method thereof, and hydraulic torque converter including the stator assembly

Technical field

The present invention relates to a stator assembly for a hydraulic torque converter and a manufacturing method thereof, and also relates to a hydraulic torque converter including the stator assembly, and also relates to a motor vehicle including such a hydraulic torque converter.

Background technique

Known hydraulic torque converters include an impeller fixed to a cover integral with a flexible disk, the impeller being able to drive the turbine to rotate by fluid. The turbine is integrated with a hub for rotatably connecting to the input shaft of the gearbox. The stator is provided with a plurality of blades arranged in the circumferential direction on the periphery of the stator main body for guiding the working fluid therein and changing the flow direction of the hydraulic torque converter when it is working. Such stators are also called guide wheels, reactors, etc. in the art. The shape, surface area, orientation and profile of the stator blades can have an important impact on the performance of the torque converter.

In the prior art, the stator used in the hydraulic torque converter is usually formed by casting. A large amount of redundant materials need to be removed by casting to form a stator. Such a process is very difficult to perform, and a large amount of material is wasted while consuming time, and the manufacturing cost and material cost are correspondingly high. Moreover, the rigidity of the stator itself formed by casting is often not high enough, and therefore it is often necessary to reinforce the retaining ring at the radially most distal end of the stator blade, making the manufacturing process more complicated, requiring more materials, and insufficient rigidity tends to cause it The operation is not robust and the life cycle is short. At the same time, the casting process lacks flexibility, and the blades formed by casting cannot achieve various complex curved surface profiles with high precision, which makes it difficult to meet various performance requirements, and therefore is not conducive to the standardized manufacturing of the stator, which further improves the manufacturing cost.

Summary of the invention

The present invention aims to overcome the shortcomings in the prior art by proposing an improved stator assembly. Such a stator assembly is simple in structure, easy to manufacture, saves materials, is convenient to assemble, is cost-effective, and can easily meet different performance requirements because of its more flexible design and structure.

According to the first aspect of the present invention, the present invention provides a stator assembly for a hydraulic torque converter, including:

The stator includes:

The stator body includes a through hole in the center, the through hole includes a first end and a second end that are open and axially opposite, and the second end includes a first end extending radially inwardly from the periphery of the through hole A flange, and

A plurality of blades extending radially outward from the periphery of the stator body;

The one-way clutch includes an outer ring, an inner ring, and a wheel stop pad accommodating portion provided between the outer ring and the inner ring, and a wheel stop pad is accommodated in the wheel stop accommodating portion, the The one-way clutch is used to be at least partially assembled in the through hole and at least axially supported by the first flange;

A holding plate for installing on the stator body at the first end side of the through hole, the holding plate is in the form of a torus,

This stator set will be remarkable in that the plurality of blades are formed integrally with the stator body and are bent so that the radially outermost ends of the plurality of blades are inclined from a plane perpendicular to the rotation axis of the stator , The radially outermost ends of adjacent blades of the plurality of blades are separated from each other.

In the stator assembly for a torque converter according to the first aspect of the present invention, a plurality of blades of the stator are integrally formed with the stator body, and radially outermost ends of adjacent blades of the plurality of blades are separated from each other Therefore, a retaining ring that surrounds the radially most distal end of the stator blade and holds and fixes the blade is no longer needed, which reduces material cost and manufacturing process complexity, and can reduce the volume of the stator assembly or increase its effective volume. The radially outermost ends of the plurality of blades of the stator are inclined from a plane perpendicular to the rotation axis of the stator, so that they can better guide and deflect the working fluid.

According to a preferred modification of the stator assembly according to the first aspect of the present invention, the plurality of blades are stamped and formed at the axial end of the stator body on the first end side of the through hole.

The provision of the plurality of blades at the axial end ensures the feasibility of the stamping process, while the integral formation of the plurality of blades on the stator body by stamping ensures better rigidity of the stator without removing redundancy The subsequent complicated and time-consuming process of materials saves materials and man-hours and further improves cost-effectiveness.

According to another preferred modification of the stator assembly according to the first aspect of the present invention, the stator main body is folded in the axial direction by means of its radially outward extension provided at the first end and returns to form a return end, so The plurality of blades are stamped and formed from the stator body at the return end. The return end may be arranged in the axial direction to be flush with the second end of the through hole of the stator body, or between the first end and the second end of the through hole, or protrude relative to the second end.

The rigidity of the stator constructed in this way is further enhanced, and the axial positions of the plurality of blades relative to the first end and the second end of the stator body can be set according to actual needs such as space requirements, performance requirements, and installation requirements. Flexible adaptation to the installation space available for the stator assembly makes compact installation feasible. It also makes it possible to use a standardized one-way clutch, because the construction and positioning of the multiple blades will not be affected by the one-way clutch.

According to a further preferred embodiment of the stator assembly of the first aspect of the present invention, the stator is stamped from a plate to form a single piece. According to a non-limiting example, the stator is stamped from a sheet metal part into a single piece.

Such a stator can meet the highest manufacturing accuracy, and the manufacturing process is simpler, further greatly saving installation time and materials, and maximizing cost-effectiveness. Moreover, the stator manufactured in this way has a simpler structure and a smaller volume, for example, the volume can be reduced by 50% compared to a casting, thereby making it lighter and more compact.

According to a modification of the stator assembly of the first aspect of the present invention, when the one-way clutch is installed in the through hole, the first flange at least axially supports at least one axial end surface of the inner ring Part.

This makes it possible to avoid the use of other supporting parts for supporting the one-way clutch, while ensuring the stable support and precise positioning of the one-way clutch with a simple structure and manner, and further reducing the number of component parts.

According to another preferred modification of the stator assembly according to the first aspect of the present invention, the one-way clutch is provided with a first circumferential shoulder, a first radial shoulder surface of the first circumferential shoulder extends into the inner ring, and The first flange axially supports the first radial shoulder surface.

In such a stator assembly, the first flange does not protrude with respect to the axial end of the one-way clutch, so that the axial size of the stator assembly can be reduced if necessary.

Further preferably, the one-way clutch is provided with a second circumferential shoulder axially offset from the first circumferential shoulder, and a second radial shoulder surface of the second circumferential shoulder extends to the outer circumference of the inner ring, The stator body is correspondingly provided with a second flange that is complementary in shape to the second circumferential shoulder and is configured to extend radially inwardly from the periphery of the through hole and pass through the shaft The extension portion is connected to the first flange and is radially offset and parallel to the first flange, and the second flange axially supports the outer ring and the stop pad accommodating portion An axial end face.

This way of the second flange can be easily realized by stamping or other bending processes, and it can share the axial pressure of the stator body, making the support of the one-way clutch more stable.

Alternatively, the one-way clutch is provided with a second circumferential shoulder axially offset from the first circumferential shoulder, a second radial shoulder surface of the second circumferential shoulder extends into the outer ring, and The stator body is correspondingly provided with a second flange that is complementary in shape to the second circumferential shoulder and is configured to extend radially inwardly from the periphery of the through hole and extend through the axial direction. Part connected with the first flange and radially offset and parallel to the first flange, the second flange axially supports at least a part of an axial end surface of the outer ring, the first The flange axially supports at least one axial end surface of the wheel stop accommodating portion and the inner ring.

The stamping process can change the structure of the stator body in a simple manner, so that it can be matched with different types of one-way clutches.

Further preferably, a first rib or a first groove is provided on the inner periphery of the through hole of the stator body, and a second groove or a second groove is correspondingly provided on the outer periphery of the outer ring of the one-way clutch. Rib, the first rib is matched with the second groove or the first groove is matched with the second rib to prevent relative rotation between the stator body and the outer ring.

Thus, by stamping and forming ribs or grooves on the stator main body, it is possible to prevent the relative rotation between the outer ring of the one-way clutch and the stator main body in a simple manner while satisfying compact assembly.

Further preferably, on the first end side of the through hole of the stator main body, an engagement groove is provided in the axial end surface of the stator main body, and an engagement groove is provided on the radially outer periphery of the retaining plate. Locking claws matched with grooves.

As a result, the engagement groove can be provided in the axial end surface of the stator main body by a simple punching process, thereby ensuring the engagement connection with the holding plate.

Further preferably, the plurality of blades are offset from each other in the circumferential direction and are configured to have a curved profile.

The more complicated curved surface profile of the blade can be formed by stamping, and the curvature of the curved surface can be conveniently adjusted according to actual needs, so as to ensure good performance of the stator and meet different needs.

According to the second aspect of the present invention, the present invention also relates to a method for manufacturing the stator assembly for a hydraulic torque converter as described above, the method comprising the following steps:

A stator is provided, the stator is configured to include:

The stator body has a through hole formed in the center thereof, so that the through hole includes a first end and a second end that are open and axially opposite, and the second end is formed to extend radially inward from the periphery of the through hole The first flange, and

A plurality of blades extending radially outward are formed from the periphery of the stator body;

A one-way clutch is provided, including an outer ring, an inner ring, and a wheel stop pad accommodating portion provided between the outer ring and the inner ring, and a wheel stop pad is accommodated in the wheel stop accommodating portion;

Assembling the one-way clutch at least partially in the through hole and at least axially supported by the first flange;

A holding plate is provided, the holding plate is shaped into the form of a torus, and it is mounted on the stator body at the first end side of the through hole.

Wherein, the step of providing the stator further includes forming the plurality of blades integrally with the stator body, and bending the plurality of blades to have their radially outermost ends from a plane perpendicular to the rotation axis of the stator. Incline and configure the plurality of blades such that the radially outermost ends of adjacent blades are separated from each other.

According to a variant of the method of the second aspect of the present invention, the step of providing the stator further includes forming the plurality of blades by stamping at the axial end of the stator body on the first end side of the through hole .

According to another variant of the method of the second aspect of the present invention, the step of providing the stator further includes forming a radially outward extension on the stator body at the first end and passing through the extension The stator body is folded back in the axial direction to form a return end, and the plurality of blades are stamped from the stator body at the return end.

Further preferably, the step of providing the stator further includes forming the stator into a single piece by stamping a plate.

Also preferably, according to the method of the second aspect of the present invention, in the step of installing the one-way clutch in the through hole, the first flange is made to axially support at least one axial direction of the inner ring At least part of the end face.

Also preferably, the method according to the second aspect of the present invention further includes the following steps:

A first circumferential shoulder is provided on the one-way clutch, and the first circumferential shoulder is configured such that a first radial shoulder surface extends into the inner ring;

The first flange axially supports the first radial shoulder surface.

According to an embodiment of the method of the second aspect of the present invention, it further includes the following steps:

A second circumferential shoulder axially offset from the first circumferential shoulder is provided on the one-way clutch, and the second circumferential shoulder is configured such that its second radial shoulder extends to the outer circumference of the inner ring;

Correspondingly, a second flange that is complementary and matched to the second circumferential shoulder is provided on the stator body, and the second flange is configured to extend radially inwardly from the periphery of the through hole and pass through The axial extension part is connected with the first flange and is radially offset and parallel to the first flange;

The second flange is made to axially support an axial end surface of the outer ring and the stop wheel accommodating portion.

According to another embodiment of the method of the second aspect of the present invention, it further includes the following steps:

A second circumferential shoulder that is axially offset from the first circumferential shoulder is provided on the one-way clutch, and the second circumferential shoulder is configured such that a second radial shoulder surface extends into the outer ring;

The second flange is made to axially support at least a part of an axial end surface of the outer ring, and the first flange is made to axially support at least one shaft of the stop pad accommodating portion and the inner ring To the end face.

Providing a first rib or a first groove on the inner periphery of the through hole of the stator body;

Correspondingly provide a second groove or a second rib on the outer periphery of the outer ring of the one-way clutch;

The first rib and the second groove or the first groove and the second rib are made to cooperate to prevent relative rotation between the stator body and the outer ring.

Also preferably, the method according to the second aspect of the present invention further includes the following steps: on the first end side of the through hole of the stator body, an engagement groove is provided in the axial end surface of the stator body, and An engaging claw matched with the engaging groove is provided on the radially outer periphery of the plate.

Also preferably, the method according to the second aspect of the present invention further includes the step of: offsetting the plurality of blades from each other in the circumferential direction and configuring them to have a curved profile.

As a result, the stator assembly that can meet different performance requirements can be manufactured by the method according to the present invention with relatively simple process steps, which is conducive to standardized production, and this manufacturing method saves materials and man-hours and can achieve higher cost-effectiveness.

According to a third aspect of the present invention, the present invention proposes a hydraulic torque converter including the stator assembly as described above.

According to the fourth aspect of the present invention, the present invention proposes a hydraulic torque converter including a stator assembly manufactured by the method described above.

According to a fifth aspect of the present invention, the present law proposes a motor vehicle including the torque converter as described above.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments of the present invention will be briefly introduced below. Among them, the drawings are only used to show some embodiments of the present invention, rather than limiting all the embodiments of the present invention to these. In the attached picture:

Figure 1 shows a perspective view of a stator assembly according to the present invention, wherein the retaining plate is not installed on the stator assembly;

Figure 2 shows a perspective view of an embodiment of the stator used in the stator assembly according to the present invention;

Figure 3 shows a top view of the stator shown in Figure 2;

Figure 4 shows an axial cross-sectional view of another embodiment of the stator used in the stator assembly according to the present invention;

Figure 5 shows an axial cross-sectional view of a stator assembly according to an embodiment of the present invention, in which the retaining plate, the one-way clutch and the stator are assembled together;

Figure 6 shows an axial cross-sectional view of a stator assembly according to a modification of the embodiment shown in Figure 5, in which the retaining plate, the one-way clutch and the stator are assembled together;

Figure 7 shows an axial cross-sectional view of the stator described in the stator assembly according to another embodiment of the present invention;

Figure 8 shows an axial cross-sectional view of the stator assembly according to the present invention, which uses the stator shown in Figure 7;

FIG. 9 shows an axial cross-sectional view according to a modification of the stator assembly shown in FIG. 8.

detailed description

The same elements in different drawings have the same or similar reference signs.

In order to make the objectives, technical solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely in conjunction with the drawings of specific embodiments of the present invention. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Unless otherwise defined, the technical terms or scientific terms used herein shall be the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the specification and claims of the patent application of the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not necessarily indicate quantitative restrictions. "Include" or "include" and other similar words mean that the element or item appearing before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. Similar words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right", etc. are only used to indicate the relative position relationship. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

As shown in FIGS. 1-4, the stator assembly 1, 1'for a hydraulic torque converter according to the first aspect of the present invention includes stators 10, 10', a one-way clutch 20 and a retaining plate intended to be assembled together. 30. The stator 10, 10' includes a stator body 11, 11' and a plurality of blades 12, 12' extending radially outward from the periphery of the stator body 11, 11', and the plurality of blades 12, 12' are preferably in the circumferential direction Distributed regularly, the stator main bodies 11, 11' include through holes 13, 13' in the center, and the through holes 13, 13' include open and axially opposite first ends 131, 131' and second ends 132, 132', The second ends 132, 132' include first flanges 15, 15' extending radially inwardly from the periphery of the through holes 13, 13'. The one-way clutch 20 includes an outer ring 21, an inner ring 22, and a wheel stop accommodating portion 23 provided between the outer ring 21 and the inner ring 22. The wheel stop accommodating portion 23 contains a wheel stop 24, preferably A plurality of wheel stop pads 24 are contained in the ground, and the plurality of wheel stop pads and the wheel stop accommodating portion 23 are regularly distributed in the circumferential direction. The one-way clutch 20 is intended to be at least partially fitted in the through holes 13, 13' and at least axially supported by the first flanges 15, 15' of the stator main bodies 11, 11'. The holding plate 30 is used to install on the stator main body 11, 11' on the side of the first ends 131, 131' of the through holes 13, 13', the holding plate 30 is in the form of a torus, and the annular surface of the holding plate 30 is configured In order to be able to cover and hold the plurality of wheel stop pads 24 in the installed state.

As shown in FIGS. 1-4, in the stator assembly 1, 1'according to the present invention, the plurality of vanes 12, 12' are integrally formed with the stator main bodies 11, 11' and are bent into the plurality of vanes The radially outermost ends of 12, 12' are inclined from a plane perpendicular to the rotation axis of the stator 10, 10', that is, from a radial plane, the radially most adjacent blades of the plurality of blades 12, 12' The outer ends are separated from each other. Therefore, when manufacturing such a stator, since the radially outermost ends of adjacent blades among the plurality of blades 12, 12' are separated from each other, there is no need to use a retaining ring for holding the radially outermost ends of the blades 12, 12'. , Further reducing materials and manufacturing process steps, and improving cost efficiency.

As shown in FIGS. 1-3 and 5-9, according to a specific embodiment of the stator assembly 1 of the present invention, the plurality of blades 12 are located on the shaft of the stator body 11 on the first end 131 side of the through hole 13 Stamped to the end. The arrangement of the plurality of blades 12 at the axial end ensures the feasibility of the stamping process, and at the same time, the integration of the plurality of blades 12 and the stator body 11 can be realized in the most material-saving manner and with the simplest structure. Manufacturing eliminates the need for subsequent complicated and time-consuming processes for removing redundant materials, saving materials and man-hours, and further improving cost efficiency. At the same time, the overall better rigidity of the stator 10 is ensured through such stamping manufacturing.

As shown in FIG. 4, according to another specific embodiment of the stator assembly 1'of the present invention, the stator main body 11' of the stator 10' is provided at the first end 131' through its radially outwardly extending extension 19' is folded back in the axial direction to form a return end 191' at which the plurality of blades 12' are stamped and formed from the stator main body 11'. The return end 191' is optionally arranged in the axial direction to be flush with the second end 132' of the through hole 13' of the stator body 11', or at the first end 131' and the second end 132 of the through hole 13' Protruding between or relative to the second end 132' of the through hole 13'. Alternatively, a reinforcement (not shown) for reinforcing the stator main body 11' may be provided between the axially folded return portion and the periphery of the through hole 13'. In such a stator 10', the rigidity of the stator main body 11' can be further enhanced due to the existence of the extending portion 19' extending radially outward. And since the axial positions of the plurality of blades 12' relative to the stator main body 11' can be set more flexibly, different space requirements, performance requirements, installation requirements, etc. can be met, thereby realizing a more compact stator assembly. And since the one-way clutch does not affect the structure and positioning of the plurality of blades 12' of the stator 10', a relatively standardized one-way clutch can be used, thereby further reducing the cost of the stator assembly.

Preferably, as shown in Figs. 1-4, in the stator assembly 1, 1'according to the present invention, the stator 10, 10' is stamped from a plate to form a single piece. Further preferably, the stators 10, 10' are stamped from sheet metal parts into a single piece. That is, the stator as a whole is formed as a single stamping piece, so that a simple and easy-to-operate manufacturing process can be used to form a stator that can meet the highest manufacturing accuracy, further greatly saving manufacturing time and materials, and maximizing cost-effectiveness. Moreover, the structure of the stator manufactured in this way is simpler, lighter, and smaller in size. For example, compared with castings, the volume can be reduced by 50%, and the mass can also be reduced by 50%, thereby making it more compact and making it possible to increase Its effective working volume, such as increasing the surface area of its blades according to actual needs, ensures its superior performance.

According to an embodiment of the stator assembly 1, 1'of the present invention, as shown in FIGS. 5-9, the one-way clutch 20 is installed in a through hole located in the center of the stator body 11, 11' of the stator 10, 10' In 13 and 13', the first flanges 15 and 15' of the stator main bodies 11 and 11' axially support at least a part of one axial end surface 221 of the inner ring 22 of the one-way clutch 20. Of course, the first flange 15, 15' can be arranged to axially support the entire axial end surface 221 of the inner ring 22 according to actual needs. Preferably, the through holes 13, 13' in the center of the stator main bodies 11, 11' contact the outer peripheral surface of the outer ring 21 of the one-way clutch 20.

As shown in FIG. 5, according to a specific embodiment, the one-way clutch 20 includes the outer ring 21, the stop pad receiving portion 23, and the lower axial end surface of the inner ring 22 in the radial direction from outer to inner. In the assembled state of the stators 10, 10' and the one-way clutch 20, the first flanges 15, 15' of the stator main bodies 11, 11' are axially held and held outside these flush axial end faces. Support these axial end faces. This makes it possible to avoid the use of other supporting parts for supporting the one-way clutch, especially to avoid the use of separate supporting parts, which helps to reduce the number of component parts. At the same time, a simple structure and method are used to ensure the stable support and precise positioning of the one-way clutch.

According to a modification of the embodiment of the stator assembly 1, 1'of the present invention, as shown in FIG. 6, the one-way clutch 20 is provided with a first circumferential shoulder 25, and a first radial shoulder 251 of the first circumferential shoulder 25 It extends into the inner ring 22 of the one-way clutch 20, and the first flanges 15, 15' of the stator main bodies 11, 11' axially support the first radial shoulder 251.

As shown in FIG. 6, according to a specific embodiment of this modification, the first radial shoulder surface 251 of the first circumferential shoulder 25 of the one-way clutch 20 and the corresponding shaft of the outer ring 21 and the stop pad receiving portion 23 The facing end faces are substantially flush in the axial direction, and the first flanges 15, 15' of the stator main bodies 11, 11' simultaneously axially support the outer ring 21 and the corresponding axial end faces of the stop pad receiving portion 23 and the first diameter To the mirror 251. Preferably, in such a stator assembly, the first flange 15, 15' of the stator main body 11, 11' and the first circumferential shoulder 25 of the one-way clutch 20 are matched to make the first flange 15, 15' not It protrudes relative to the axial end of the one-way clutch 20, so that the axial size of the stator assembly can be reduced if necessary, which is beneficial to realize an axially compact stator assembly. As shown in Figures 7-8, according to a further preferred embodiment of the stator assembly 1, 1'of the present invention, the one-way clutch 20 is provided with a second circumferential shoulder 26 that is axially offset from the first circumferential shoulder 25, and the second The second radial shoulder 261 of the circumferential shoulder 26 extends to the outer circumference of the inner ring 22, and the stator main bodies 11, 11' are correspondingly provided with second flanges 16, 16' that are complementary in shape to the second circumferential shoulder 26 and cooperate with each other. The second flanges 16, 16' are configured to extend radially inwardly from the periphery of the through holes 13, 13' of the stator main bodies 11, 11', and pass through the axial extensions 14, 14' and the

first flanges

15, 15 15' is connected to and radially offset and parallel to the first flanges 15, 15', and the second flanges 16, 16' axially support the outer ring 21 of the one-way clutch 20 and the wheel stop accommodating portion 23 The corresponding axial end face.

As shown in FIG. 8, according to a specific implementation of this preferred embodiment, the above-mentioned corresponding axial end surfaces of the outer ring 21 of the one-way clutch 20 and the wheel stop accommodating portion 23 are substantially flush in the axial direction. , And constitute the second radial shoulder 261 of the second circumferential shoulder 26 axially supported by the second flanges 16, 16', the same as the first radial of the second radial shoulder 261 and the first circumferential shoulder 25 The shoulder 251 is staggered in the axial direction. As shown in Fig. 8, such a configuration makes the through holes 13, 13' in the center of the stator main bodies 11, 11' expand step by step from the lower axial end to the upper axial end. This structure, which can be easily realized by punching or other bending processes, facilitates the positioning and stable support of the one-way clutch 20 in the through holes 13, 13', and improves the robustness of the stator assembly.

As shown in Figures 7 and 9, according to another preferred embodiment of the stator assembly 1, 1'of the present invention, the first circumferential shoulder 25 provided on the one-way clutch 20 is axially offset from the second circumferential shoulder 26. Two radial shoulders 261 extend into the outer ring 21 of the one-way clutch 20, and second flanges 16, 16' that are complementary in shape to and cooperate with the second circumferential shoulder 26 are correspondingly provided on the stator main bodies 11, 11' , The second flanges 16, 16' extend radially inwardly from the periphery of the through holes 13, 13', and are connected to the first flanges 15, 15' through the axial extensions 14, 14', and are connected to the first The flanges 15, 15' are radially offset and parallel, that is, such second flanges 16, 16' axially support at least a part or all of the corresponding axial end surface of the outer ring 21 of the one-way clutch 20, and the first convex The

rims

15, 15 ′ are at least axially at the corresponding axial end surfaces of the supporting wheel washer receiving portion 23 of the one-way clutch 20 and the inner ring 22.

That is, through the stamping process, especially through the stamping of the plate, the structure of the stator body can be changed according to actual needs in an easy-to-operate manner, especially the multi-level flange or step can be conveniently formed, so that it can match different types of One-way clutch type. It should be noted that the radially extending surface of such a flange or stepped portion does not necessarily extend strictly in the radial direction, and it may also be inclined and form a tapered surface around the central rotation axis of the stator assembly. At the same time, it should be noted that any part of the periphery of the through hole of the stator body may form a tapered surface around the central rotation axis of the stator assembly obtainable by a stamping process. The tapered surface is particularly conducive to the stable assembly between the stator and the one-way clutch. It should also be noted that in the stator assembly according to the present invention, for the consideration of improved rigidity and ease of assembly, manufacturing and maintenance, any involved edges can be provided with chamfered parts, rounded parts or rounded transition parts as required.

Preferably, in all embodiments of the stator assembly 1, 1'according to the present invention, as shown in FIGS. 1-3, a first rib is provided on the inner periphery of the through holes 13, 13' of the stator main bodies 11, 11' Part 17 or first groove (not shown), a second groove (not shown) or second rib (not shown) is provided on the outer periphery of the outer ring 21 of the one-way clutch 20, A rib 17 cooperates with the second groove or the first groove cooperates with the second rib to prevent relative rotation between the

stator body

11, 11 ′ and the outer ring 21. Thus, forming ribs or grooves on the stator body preferably by stamping makes it possible to prevent the relative rotation between the outer ring of the one-way clutch and the stator body in a simple manner, while satisfying compact and stable assembly. Of course, the present invention does not exclude other feasible fixing methods between the stator body and the outer ring, such as welding, riveting, screwing, etc.

Preferably, in all embodiments of the stator assembly 1, 1'according to the present invention, as shown in FIGS. 1-3, at the first ends 131, 131' of the through holes 13, 13' of the stator main bodies 11, 11' On the other hand, engagement grooves 18 are provided in the axial end surfaces of the stator

main bodies

11 and 11 ′, and engagement claws 38 that cooperate with the engagement grooves 18 are provided on the radial outer periphery of the holding plate 30. As a result, the engagement groove can be provided in the axial end surface of the stator main body by a simple punching process, thereby ensuring the engagement connection with the holding plate. Of course, the present invention does not exclude other feasible fixing methods between the stator main body and the holding plate, such as gluing, riveting, screwing, etc. Alternatively, the retaining plate can also be fixed on the one-way clutch.

Preferably, in all embodiments of the stator assembly 1, 1'according to the present invention, as shown in Figures 1-3, the plurality of blades 12, 12' are offset from each other in the circumferential direction and are configured to have a curved profile. By stamping, a more complex curved surface profile of the blade can be formed, and the curvature of the curved surface can be conveniently adjusted according to actual needs, which can ensure the good performance of the stator and meet different needs. That is, when the stator has different performance requirements, only the structure of its blades can be changed without changing the structure of the stator body, so that relative standardization can be achieved, which is conducive to cost reduction and mass production.

According to the second aspect of the present invention, a method for manufacturing the stator assembly 1, 1'for a hydraulic torque converter as described above is also proposed. As shown in Figs. 1-4, the method includes the following steps:

A stator 10, 10' is provided, and the stator is configured to include:

The stator main bodies 11, 11' have through holes 13, 13' formed in their centers, so that the through holes include open and axially opposite first ends 131, 131' and second ends 132, 132', at the second end 132 , 132' form first flanges 15, 15' extending radially inward from the periphery of the through holes 13, 13';

A plurality of blades 12, 12' extending radially outward are formed from the periphery of the stator main body 11, 11';

A one-way clutch 20 is provided, which includes an outer ring 21, an inner ring 22, and a wheel stop pad accommodating portion 23 provided between the outer ring 21 and the inner ring 22, and the wheel stop pad accommodating portion 23 contains the wheel stop pad 24;

Assemble the one-way clutch 20 at least partially in the through holes 13, 13' and at least be axially supported by the first flanges 15, 15';

Provide a holding plate 30, shape the holding plate 30 into the form of a torus, and install it on the stator main body 11, 11' on the side of the first end 131, 131' of the through hole 13, 13',

Wherein, the step of providing the stator 10, 10' further includes forming the plurality of blades 12, 12' and the stator body 11, 11' integrally, and bending the plurality of blades 11, 11' to the outermost in the radial direction. The ends are inclined from a plane perpendicular to the rotation axis of the stator 10, 10', and the plurality of blades 12, 12' are configured such that the radially outermost ends of adjacent blades are separated from each other.

According to a preferred embodiment of the method of the second aspect of the present invention, the step of providing the stator 10, 10' further includes the shaft of the stator body 11, 11' at the first end 131, 131' side of the through hole 13, 13' The plurality of blades 12, 12' are formed by stamping toward the end.

According to another preferred embodiment of the method of the second aspect of the present invention, the step of providing the stator 10, 10' further includes forming a radially outward extension at the first end 131, 131' on the stator body 11, 11' And the stator main bodies 11, 11' are folded back in the axial direction through the extension part 19' to form a return end 191', and the plurality of blades 12, 11' are stamped from the stator main bodies 11, 11' at the return end 191'. 12'.

According to the method of the second aspect of the present invention, preferably, the step of providing the stator 10, 10' further includes forming the stator 10, 10' into a single piece by a sheet metal part. For example, the stators 10, 10' are formed as a single piece by stamping aluminum plates.

According to the method of the second aspect of the present invention, preferably, in the step of installing the one-way clutch 20 in the through holes 13, 13', the first flanges 15, 15' are made to axially support at least one shaft of the inner ring 22 To at least a part of the end surface 221.

The method according to the second aspect of the present invention, further preferably, further includes the following steps:

A first circumferential shoulder 25 is provided on the one-way clutch 20, and the first circumferential shoulder 25 is configured such that its first radial shoulder 251 extends into the inner ring 22;

The first flange 15, 15' axially supports the first radial shoulder 251.

A second circumferential shoulder 26 axially offset from the first circumferential shoulder 25 is provided on the one-way clutch 20, and the second circumferential shoulder 26 is configured such that its second radial shoulder 261 extends to the outer circumference of the inner ring 22;

The stator main bodies 11, 11' are correspondingly provided with second flanges 16, 16' that are complementary in shape to the second circumferential shoulder 26 and cooperate with each other. The second flanges 16, 16' are configured to extend from the through holes 13, 13' The periphery extends radially inward, and is connected to the first flanges 15, 15' through the axial extensions 14, 14', and is radially offset and parallel to the first flanges 15, 15';

The second flanges 16, 16' axially support one axial end surface of the outer ring 21 and the stop pad accommodating portion 23.

The method according to the second aspect of the present invention may optionally further include the following steps:

A second circumferential shoulder 26 axially offset from the first circumferential shoulder 25 is provided on the one-way clutch 20, and the second circumferential shoulder 26 is configured such that its second radial shoulder 261 extends into the outer ring 21;

The stator main bodies 11, 11' are correspondingly provided with second flanges 16, 16' that are complementary in shape to the second circumferential shoulder 26 and cooperate with each other. The second flanges 16, 16' are configured to extend from the through holes 13, 13' The periphery extends radially inward, and is connected to the first flanges 15, 15' through the axial extension portions 14, 14', and is radially offset and parallel to the first flanges 15, 15';

Make the second flanges 16, 16' axially support at least a part of an axial end surface of the outer ring 21, and make the first flanges 15, 15' axially support at least the wheel pad accommodation portion 23 and the inner ring 22 One axial end face.

A first rib 17 or a first groove is provided on the inner periphery of the through holes 13, 13' of the stator main bodies 11, 11';

Correspondingly provide a second groove or a second rib on the outer periphery of the outer ring 21 of the one-way clutch 20;

The first rib 17 cooperates with the second groove or the first groove cooperates with the second rib to prevent relative rotation between the stator body 11, 11' and the outer ring 21.

According to the method of the second aspect of the present invention, further preferably, it further includes the following steps: on the side of the first end 131, 131' of the through hole 13, 13' of the stator body 11, 11', and on the side of the stator body 11, 11' An engagement groove 18 is provided in the axial end surface, and an engagement pawl 38 that cooperates with the engagement groove 18 is provided at the radial outer periphery of the holding plate 30.

The method according to the second aspect of the present invention, further preferably, further includes the following step: offsetting the plurality of blades 12, 12' from each other in the circumferential direction and configuring them to have a curved profile.

Therefore, the stator assembly as described above can be manufactured with relatively simple process steps by the method according to the present invention, which is beneficial to standardized production, and such a manufacturing method saves materials and man-hours, and can achieve higher cost-effectiveness.

According to a third aspect of the present invention, the present invention proposes a hydraulic torque converter, which includes the stator assembly 1, 1'according to the above.

According to the fourth aspect of the present invention, the present invention proposes a hydraulic torque converter including the stator assembly 1, 1'manufactured by the method described above.

The exemplary embodiments of the stator assembly for a hydraulic torque converter and its manufacturing method proposed by the present invention are described in detail above with reference to the preferred embodiments. However, those skilled in the art can understand that without departing from the present invention Under the premise of the concept, various modifications and modifications can be made to the above specific embodiments, and various technical features and structures proposed by the present invention can be combined in various ways without exceeding the protection scope of the present invention.

Claims

A stator assembly for a hydraulic torque converter, including:

A stator (10, 10'), the stator includes:

The stator body (11, 11') includes a through hole (13, 11') in the center, and the through hole includes an open and axially opposite first end (131, 131') and a second end (132, 132'), the second end (132, 132') includes a first flange (15, 15') extending radially inward from the periphery of the through hole (13, 13'), and

A plurality of blades (12, 12') extending radially outward from the periphery of the stator body (11, 11');

The one-way clutch (20) includes an outer ring (21), an inner ring (22), and a wheel stop accommodating portion (23) provided between the outer ring (21) and the inner ring (22), A wheel stop pad (24) is accommodated in the wheel stop pad accommodating portion (23), and the one-way clutch (20) is used to at least partially fit in the through hole (13, 13'), and At least axially supported by the first flange (15, 15');

A holding plate (30) for installing on the stator main body (11, 11') on the side of the first end (131, 131') of the through hole (13, 13'),

Wherein, the plurality of blades (12, 12') are integrally formed with the stator body (11, 11') and are bent such that the radially outermost ends of the plurality of blades (12, 12') are vertically The plane of the rotation axis of the stator (10, 10') is inclined, and the radially outermost ends of adjacent blades of the plurality of blades (12, 12') are separated from each other.
The stator assembly according to claim 1, wherein the plurality of blades are stamped and formed at an axial end of the stator body on the first end side of the through hole.
The stator assembly according to claim 1, wherein the stator main body is folded in the axial direction and returned to form a return end through its radially outwardly extending extension (19') provided at the first end ( 191'), the plurality of blades are stamped and formed from the stator body at the return end.
The stator assembly according to any one of claims 1 to 3, wherein the stator (10, 10') is stamped from a plate to form a single piece.
The stator assembly according to claim 3, wherein, when the one-way clutch (20) is installed in the through hole (13, 13'), the first flange (15, 15') is at least axially At least a part of an axial end surface (221) of the inner ring (22) is supported.
The stator assembly (1) according to claim 5, wherein the one-way clutch (20) is provided with a first circumferential shoulder (25), and a first radial shoulder (25) of the first circumferential shoulder (25) 251) extends into the inner ring (22), and the first flange (15, 15') axially supports the first radial shoulder (251).
The stator assembly according to claim 6, wherein the one-way clutch (20) is provided with a second circumferential shoulder (26) axially offset from the first circumferential shoulder (25), the second circumferential shoulder The second radial shoulder (261) of the shoulder (26) extends to the outer circumference of the inner ring (22), and the stator body (11, 11') is correspondingly provided with the second circumferential shoulder (26) A second flange (16, 16') with complementary shapes and mating, the second flange (16, 16') is configured to extend radially inward from the periphery of the through hole (13, 13'), And is connected to the first flange (15, 15') through the axial extension (14, 14') and is radially offset and parallel to the first flange (15, 15'), the first Two flanges (16, 16') axially support one axial end surface of the outer ring (21) and the wheel stop pad accommodating portion (23).
The stator assembly according to claim 6, wherein the one-way clutch (20) is provided with a second circumferential shoulder (26) axially offset from the first circumferential shoulder (25), the second circumferential shoulder The second radial shoulder surface (261) of the shoulder (26) extends into the outer ring (21), and the stator body (11, 11') is correspondingly provided with the shape of the second circumferential shoulder (26) Complementary and mating second flanges (16, 16'), the second flanges (16, 16') are configured to extend radially inwardly from the periphery of the through hole (13, 13'), and Connected with the first flange (15, 15') through the axial extension (14, 14') and radially offset and parallel to the first flange (15, 15'), the second The flange (16, 16') axially supports at least a part of an axial end surface of the outer ring (21), and the first flange (15, 15') at least axially supports the wheel stop accommodating portion ( 23) and an axial end surface of the inner ring (22).
The stator assembly according to any one of claims 1 to 3, wherein a first rib (17) is provided on the inner periphery of the through hole (13, 13') of the stator body (11, 11') Or a first groove, a second groove or a second rib is correspondingly provided on the outer periphery of the outer ring (21) of the one-way clutch (20), the first rib (17) and the The second groove cooperates or the first groove cooperates with the second rib to prevent relative rotation between the stator body (11, 11') and the outer ring (21).
The stator assembly according to any one of claims 1 to 3, wherein, on the first end (131, 131') side of the through hole (13, 13') of the stator body (11, 11'), An engagement groove (18) is provided in the axial end surface of the stator main body (11, 11'), and an engagement groove (18) is provided at the radial outer periphery of the retaining plate (30). The engaging claw (38).
The stator assembly according to any one of claims 1 to 3, wherein the plurality of blades (12, 12') are offset from each other in the circumferential direction and are configured to have a curved profile.
A method for manufacturing a stator assembly for a hydraulic torque converter includes the following steps:

A stator (10, 10') is provided, and the stator is configured to include:

The stator body (11, 11') has a through hole (13, 13') formed in its center, so that the through hole includes a first end (131, 131') and a second end (132) that are open and axially opposite. , 132'), forming a first flange (15, 15') extending radially inward from the periphery of the through hole (13, 13') at the second end (132, 132'), and

A plurality of blades (12, 12') extending radially outward are formed from the periphery of the stator main body (11, 11');

A one-way clutch (20) is provided, including an outer ring (21), an inner ring (22), and a wheel stop pad accommodating portion (23) provided between the outer ring (21) and the inner ring (22) , The wheel stop pad (24) is accommodated in the wheel stop pad accommodating portion (23);

Assembling the one-way clutch (20) at least partially in the through holes (13, 13') and at least axially supported by the first flange (15, 15');

Provide a holding plate (30) and install it on the stator body (11, 11') on the side of the first end (131, 131') of the through hole (13, 13'),

Wherein, the step of providing the stator (10, 10') further includes integrally forming the plurality of blades with the stator body, and bending the plurality of blades such that the radially outermost end thereof is perpendicular to the The plane of the rotation axis of the stator is inclined, and the plurality of blades (12, 12') are configured such that the radially outermost ends of adjacent blades are separated from each other.
The method according to claim 12, wherein the step of providing the stator further comprises forming the plurality of blades by stamping at an axial end of the stator body on the first end side of the through hole.
The method according to claim 12, wherein the step of providing the stator further comprises forming an extension (19') extending radially outward at the first end on the stator body and passing through the stator The extension part folds the stator body back in the axial direction to form a return end (191'), and stamps the plurality of blades from the stator body at the return end.
The method according to any one of claims 12 to 14, wherein the step of providing the stator (10, 10') further comprises forming the stator (10, 10') as a single piece by stamping a plate.
The method according to claim 15, wherein, in the step of installing the one-way clutch (20) in the through hole (13, 13'), the first flange (15, 15') ) At least a part of an axial end surface (221) of the inner ring (22) is axially supported at least.
The method according to claim 16, further comprising the following steps:

A first circumferential shoulder (25) is provided on the one-way clutch (20), and the first circumferential shoulder (25) is configured such that its first radial shoulder surface (251) extends to the inner ring (22) in;

The first flange (15, 15') is made to axially support the first radial shoulder (251).
The method according to claim 17, further comprising the following steps:

A second circumferential shoulder (26) axially offset from the first circumferential shoulder (25) is provided on the one-way clutch (20), and the second circumferential shoulder (26) is configured as its second diameter The shoulder surface (261) extends to the outer circumference of the inner ring (22);

The stator body (11, 11') is provided with a second flange (16, 16') that is complementary and matched in shape with the second circumferential shoulder (26), and the second flange (16) , 16') is configured to extend radially inward from the periphery of the through hole (13, 13') and pass through the axial extension (14, 14') and the first flange (15, 15') Connected and radially offset and parallel to the first flange (15, 15');

The second flange (16, 16') is made to axially support an axial end surface of the outer ring (21) and the stop wheel accommodating portion (23).
The method according to claim 17, further comprising the following steps:

A second circumferential shoulder (26) axially offset from the first circumferential shoulder (25) is provided on the one-way clutch (20), and the second circumferential shoulder (26) is configured as its second diameter The shoulder surface (261) extends into the outer ring (21);

The stator body (11, 11') is provided with a second flange (16, 16') that is complementary and matched in shape with the second circumferential shoulder (26), and the second flange (16) , 16') is configured to extend radially inward from the periphery of the through hole (13, 13'), and pass through the axial extension (14, 14') and the first flange (15, 15') Connected and radially offset and parallel to the first flange (15, 15');

Make the second flange (16, 16') axially support at least a part of an axial end surface of the outer ring (21), and make the first flange (15, 15') at least axially support An axial end surface of the wheel stop pad receiving portion (23) and the inner ring (22).
The method according to any one of claims 12 to 14, further comprising the following steps:

A first rib (17) or a first groove is provided on the inner periphery of the through hole (13, 13') of the stator body (11, 11');

A second groove or a second rib is correspondingly provided on the outer periphery of the outer ring (21) of the one-way clutch (20);

Make the first rib (17) cooperate with the second groove or the first groove with the second rib to prevent the stator main body (11, 11') from interacting with the outer The relative rotation between circles (21).
The method according to any one of claims 12 to 14, further comprising the following step: at the first end (131, 131) of the through hole (13, 13') of the stator body (11, 11') ') side, an engagement groove (18) is provided in the axial end surface of the stator main body (11, 11'), and an engagement groove (18) is provided at the radial outer periphery of the retaining plate (30). ) Matching claws (38).
The method according to any one of claims 12 to 14, further comprising the step of: offsetting the plurality of blades (12, 12') from each other in the circumferential direction and configuring them to have a curved profile.
A hydraulic torque converter comprising the stator assembly (1) according to any one of claims 1 to 11.
A hydraulic torque converter comprising a stator assembly (1) manufactured by the method according to any one of claims 12-22.
A motor vehicle comprising the torque converter according to claim 23 or 24.