Hydraulic torque converter with multifunctional retainer

Abstract

The invention relates to a hydraulic torque converter, in particular to a hydraulic torque converter with a multifunctional retainer, and solves the technical problems that when a guide wheel and a turbine in an existing hydraulic torque converter relatively rotate at a high speed, the guide wheel or the turbine is seriously abraded due to direct contact, and parts in the guide wheel are easy to fall off. The hydraulic torque converter with the multifunctional retainer comprises a cover wheel, a turbine, the retainer, a guide wheel and a pump wheel which are sequentially arranged around the same rotating shaft in the axial direction. The cover wheel and the pump wheel are buckled to form a mounting cavity; the turbine and the guide wheel are arranged in the mounting cavity; the retainer is nested in the guide wheel and comprises N roller pins, a cover ring, a retainer and a protective seat; the cover ring and the protective seat form a mounting ring cavity; the retainer and the roller pin are positioned in the mounting ring cavity; n needle holes matched with the rolling needles are uniformly distributed on the retainer along the circumference; the roller pins are arranged in the pin holes and used for rotating and moving in the circumferential direction of the protection base when the turbine rotates at a high speed. The protective seat is used for reducing abrasion of the turbine to the guide wheel when the turbine rotates at a high speed.

Description

Technical Field

[0001] The invention relates to a hydraulic torque converter, in particular to a hydraulic torque converter with a multifunctional retaining ring. Background Art

[0002] The guide wheel and turbine in the automotive torque converter need to rotate at a relatively high speed. The axial direction is subject to the impact force brought by the high-intensity oil pressure. Direct contact between the guide wheel and the turbine will cause serious wear of the guide wheel or the turbine, and it is easy for the parts in the guide wheel to fall out.

[0003] The coordination between the guide wheel and the turbine in the prior art has the following two disadvantages: first, the torque converter adopts a needle roller bearing assembly to coordinate with the retaining ring part in the guide wheel assembly, but the coordination method is surface contact, and the surface of the needle roller bearing will cause serious wear to the surface of the retaining ring; second, the needle roller bearing assembly occupies a certain axial space and increases the installation process, causing certain economic losses in terms of materials and installation time.

[0004] Therefore, in order to prevent the above situation, it is necessary to design a device that can support the rotation of the turbine while protecting the guide wheel. Summary of the invention

[0005] The purpose of the present invention is to solve the technical problem that when the guide wheel and the turbine in the existing torque converter rotate at a relatively high speed, their direct contact will cause serious wear of the guide wheel or the turbine and easily cause the parts in the guide wheel to fall out, and to provide a torque converter with a multifunctional retaining ring.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A hydraulic torque converter with a multifunctional retainer, which is special in that it comprises a cover wheel, a turbine, a retainer, a guide wheel and a pump wheel which are sequentially arranged along the axial direction around the same rotating shaft; the cover wheel and the pump wheel are buckled to form an installation cavity; the turbine and the guide wheel are arranged in the installation cavity;

[0008] The guard ring is nested in the guide wheel, and includes N needle rollers and a cover ring, a retaining frame, and a guard seat arranged in sequence along the axial direction of the rotating shaft; the cover ring and the guard seat form a mounting ring cavity; the retaining frame and the needle roller are located in the mounting ring cavity; N≥2;

[0009] N pinholes matching the needle rollers are evenly distributed along the circumference of the cage;

[0010] The needle roller is arranged in the needle hole, and the needle roller is a cylindrical structure, and is in linear contact with the cover ring and the guard seat respectively, and is used to rotate and move along the circumference of the guard seat at the same time when the turbine rotates at high speed;

[0011] The axial length of the cover ring is greater than the diameter of the needle roller, and is used to buckle the retaining frame and the needle roller onto the guard seat, and a gap is provided between the cover ring and the guard seat; the guard seat is pressed into the inside of the guide wheel, and the cover ring is in contact with the turbine, and is used to reduce the wear of the turbine on the guide wheel when the turbine rotates at high speed.

[0012] Furthermore, the guard seat includes an annular body and a limit piece coaxially arranged inside the annular body; the axial length of the limit piece is smaller than the axial length of the cover ring; the annular body is arranged inside the guide wheel, and its outer diameter is adapted to the inner diameter of the mounting hole of the guide wheel; the limit piece is connected to the inner wall of the annular body, and its inner diameter is adapted to the outer diameter of the rotating shaft.

[0013] Furthermore, the retaining frame includes an inner ring, M convex connectors and an outer ring coaxially arranged on the outside of the inner ring, M≥2; the axial height of the convex connector is smaller than the diameter of the needle roller, one end of the convex connector is connected to the outer wall of the inner ring, and the other end is connected to the inner wall of the outer ring; the M convex connectors form M pinholes with the inner ring and the outer ring; the inner diameter of the inner ring is matched with the outer diameter of the limiter; the outer diameter of the outer ring is matched with the inner diameter of the cover ring.

[0014] Furthermore, the cover ring includes an annular cover body extending axially and an annular cover plate extending radially; one end of the annular cover body is connected to the outer side of the annular cover plate; the inner diameter of the annular cover body is matched with the outer diameter of the outer ring.

[0015] Furthermore, a plurality of protrusions are arranged on the inner wall of the limiting member, and limiting grooves are formed between adjacent protrusions.

[0016] Furthermore, a plurality of first buckles are provided at the end of the outer side wall of the limiting member corresponding to the inner ring.

[0017] Furthermore, a plurality of second buckles are provided on the inner side wall of the other end of the annular cover body for limiting the axial movement of the outer ring.

[0018] Furthermore, there are six protrusions, which are evenly arranged on the inner wall of the limiting member.

[0019] Furthermore, the rolling needle is clearance-matched with the needle hole.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention discloses a hydraulic torque converter with a multifunctional guard ring. A cover ring, a retaining frame, a needle roller and a guard seat are arranged between a turbine and a guide wheel. The guard seat is pressed onto the guide wheel of the hydraulic torque converter to limit the axial displacement of parts in the guide wheel and protect the guide wheel. The cover ring is brought into contact with the turbine to achieve high-speed relative rotation of the turbine and the guide wheel. At the same time, the guard seat blocks the damage to the guide wheel caused by the impact force of the turbine, thereby shortening the axial space of the hydraulic torque converter.

[0022] 2. The torque converter with a multifunctional guard ring of the present invention utilizes roller needles to directly contact the cover ring and the guard seat respectively, thereby realizing rolling contact and reducing wear on the guide wheel.

[0023] 3. In the torque converter with a multifunctional retainer of the present invention, the axial length of the limiter is smaller than the axial length of the cover ring, so as to prevent the end face of the limiter from contacting with the turbine and avoid wear.

[0024] 4. In a hydraulic torque converter with a multifunctional retainer of the present invention, M convex connectors and the inner ring and the outer ring form M pinholes, and the M pinholes are used to limit the range of motion of the needle roller, thereby ensuring the relative movement of the annular cover body and the limiter.

[0025] 5. The present invention provides a torque converter with a multifunctional guard ring, wherein the protruding height of the convex connecting piece is smaller than the diameter of the needle roller, one end of the convex connecting piece is connected to the outer wall of the inner ring, and the other end is connected to the inner wall of the outer ring, thereby replacing the guard ring parts in the existing two components (needle roller bearing component and guide wheel component), reducing the number of parts, shortening the axial distance, and increasing the internal space of the torque converter.

[0026] 6. In a hydraulic torque converter with a multifunctional retainer of the present invention, a plurality of protrusions are arranged on the inner wall of the limiter, and a limit groove is formed between adjacent protrusions to limit the axial movement of the limiter and facilitate the oil in the hydraulic torque converter to pass through.

[0027] 7. In a hydraulic torque converter with a multifunctional retaining ring of the present invention, a plurality of first buckles are arranged at the end of the outer wall of the limiter corresponding to the inner ring, and the first buckles are used to limit the axial displacement of the retaining frame to prevent excessive gap between the retaining frame and the track surface of the annular body, thereby avoiding the needle roller from falling out.

[0028] 8. In a hydraulic torque converter with a multifunctional retainer of the present invention, a plurality of second buckles are arranged on the inner side wall of the annular cover body corresponding to the outer ring, which can prevent the annular cover plate from separating from the retainer.

[0029] 9. In the torque converter with a multifunctional retainer of the present invention, the clearance between the needle roller and the needle hole is matched, so that the needle roller can rotate better and prevent the needle roller from being worn on only one side. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an exploded view of an embodiment of a hydraulic torque converter with a multifunctional retainer of the present invention;

[0031] Figure 2 It is a structural schematic diagram of a guard seat in an embodiment of a hydraulic torque converter with a multifunctional guard ring of the present invention;

[0032] Figure 3 It is a structural schematic diagram of a retainer in an embodiment of a hydraulic torque converter with a multifunctional retainer ring of the present invention;

[0033] Figure 4 It is a structural schematic diagram of a cover ring of a hydraulic torque converter embodiment with a multifunctional retainer ring according to the present invention;

[0034] Figure 5 It is a structural schematic diagram of a needle roller of an embodiment of a hydraulic torque converter with a multifunctional retainer of the present invention;

[0035] Figure 6 It is a cross-sectional view of a cover ring, a retaining frame, and a needle roller installed on a retaining seat of an embodiment of a hydraulic torque converter with a multifunctional retaining ring of the present invention;

[0036] Figure 7 The present invention is a schematic diagram of an embodiment of a hydraulic torque converter with a multifunctional retaining ring, wherein a cover ring, a retaining frame, a needle roller and a retaining seat are installed between a turbine and a guide wheel.

[0037] Description of reference numerals:

[0038] 1-cover ring, 11-annular cover body, 12-annular cover plate, 13-second buckle, 2-retaining frame, 21-needle hole, 22-inner ring, 23-convex connector, 24-outer ring, 3-needle roller, 4-guard seat, 41-annular body, 42-limiting piece, 43-first buckle, 44-protrusion, 45-limiting groove, 5-turbine, 7-guide wheel. DETAILED DESCRIPTION

[0039] like Figure 1 , Figure 7 As shown, a hydraulic torque converter with a multifunctional retainer includes a cover wheel, a turbine 5, a retainer, a guide wheel 7 and a pump wheel arranged in sequence along the axial direction around the same rotating shaft; the cover wheel and the pump wheel are buckled to form a mounting cavity; the turbine 5 and the guide wheel 7 are arranged in the mounting cavity; the retainer is nested in the guide wheel 7, as shown in FIG. Figure 6 As shown, the retaining ring includes N needle rollers 3 and a cover ring 1, a retaining frame 2, and a retaining seat 4 arranged in sequence along the axial direction of the rotating shaft; the cover ring 1 and the retaining seat 4 form a mounting ring cavity; the retaining frame 2 and the needle rollers 3 are located in the mounting ring cavity, and the retaining frame 2 can rotate freely between the cover ring 1 and the retaining seat 4; N=30; N needle holes 21 are evenly distributed along the circumference of the retaining frame 2 and are adapted to the needle rollers 3; as shown Figure 5 As shown, the needle roller 3 is arranged in the needle hole 21, and the needle roller 3 is a cylindrical structure, which is in line contact with the cover ring 1 and the guard seat 4 respectively. The needle roller 3 and the needle hole 21 are matched with a gap, which is used to rotate and move circumferentially along the guard seat 4 when the turbine 5 rotates at a high speed; the axial length of the cover ring 1 is greater than the diameter of the needle roller 3, and a gap is provided between the cover ring 1 and the guard seat 4, which is used to buckle the retaining frame 2 and the needle roller 3 on the guard seat 4; the guard seat 4 is pressed into the guide wheel 7, and the cover ring 1 is in contact with the turbine 5, which is used to reduce the wear of the turbine 5 on the guide wheel 7 when the turbine 5 rotates at a high speed.

[0040] like Figure 2 As shown, the guard 4 includes an annular body 41 and a limit member 42 coaxially arranged in the annular body 41; the axial length of the limit member 42 is smaller than the axial length of the cover ring 1; the annular body 41 is arranged inside the guide wheel 7, and its outer diameter is adapted to the inner diameter of the mounting hole of the guide wheel 7; the limit member 42 is connected to the inner wall of the annular body 41, and its inner diameter is adapted to the outer diameter of the rotating shaft.

[0041] Preferably, a plurality of protrusions 44 are provided on the inner wall of the limiter 42, and a limit groove 45 is formed between adjacent protrusions 44 to facilitate the oil in the torque converter to pass through. A plurality of first buckles 43 are provided at the outer wall end of the limiter 42 corresponding to the inner ring 22 to limit the axial movement of the inner ring 22. There are six protrusions 44, and the six protrusions 44 are evenly arranged on the inner wall of the limiter 42.

[0042] like Figure 3 As shown, the retainer 2 includes an inner ring 22, M convex connectors 23 and an outer ring 24 coaxially arranged on the outside of the inner ring 22, and the M convex connectors 23 form M pinholes 21 with the inner ring 22 and the outer ring 24; M=30; the axial height of the convex connector 23 is smaller than the diameter of the needle roller 3, one end of the convex connector 23 is connected to the outer wall of the inner ring 22, and the other end is connected to the inner wall of the outer ring 24; the inner diameter of the inner ring 22 is matched with the outer diameter of the limit member 42; the outer diameter of the outer ring 24 is matched with the inner diameter of the cover ring 1.

[0043] like Figure 4 As shown, the cover ring 1 includes an annular cover body 11 extending in the axial direction and an annular cover plate 12 extending in the radial direction; one end of the annular cover body 11 is connected to the outer side of the annular cover plate 12; the inner diameter of the annular cover body 11 is adapted to the outer diameter of the outer ring 24. A plurality of second buckles 13 are provided on the inner side wall of the other end of the annular cover body 11 to limit the axial movement of the outer ring 24. A certain gap is left between the annular cover body 11 and the annular body 41 to prevent the annular body 41 from interfering with the circumferential movement of the annular cover body 11.

[0044] In this embodiment, the needle roller 3 is located on the retaining frame 2, and contacts the track surface of the annular cover body 11 and the track surface of the annular body 41 respectively, and can rotate freely between the cover ring 1 and the guard seat 4. The guard seat 4 is pressed on the guide wheel 7 of the torque converter to limit the axial displacement of the parts in the guide wheel 7 and protect the guide wheel 7. The cover ring 1 contacts the turbine 5 to achieve high-speed relative rotation of the turbine 5 and the guide wheel 7.

[0045] When the torque converter is working, the turbine 5 rotates at high speed, and the pressure at the front end of the turbine 5 inside the torque converter increases, pushing the turbine 5 to the side of the guide wheel 7. When the turbine 5 is in close contact with the cover ring 1, the cover ring 1 is driven to rotate at high speed. Since the cover ring 1 drives the needle roller 3 to roll on the track surface of the annular body 41, the wear of the guide wheel 7 by the high-speed rotating turbine 5 will be reduced. In this process, the turbine 5 will generate a strong impact force backwards. Due to the existence of the guard 4, the damage to the guide wheel 7 by this impact force is blocked, the axial space of the torque converter is shortened, and the guide wheel 7 can be protected while supporting the rotation of the turbine 5.

Claims

1. A torque converter with a multifunctional retainer, characterized in that: It comprises a cover wheel, a turbine (5), a retaining ring, a guide wheel (7) and a pump wheel which are arranged in sequence along the axial direction around the same rotating axis; The cover wheel and the pump wheel are buckled together to form a mounting cavity; the turbine (5) and the guide wheel (7) are arranged in the mounting cavity; The guard ring is nested in the guide wheel (7), and comprises N needle rollers (3) and a cover ring (1), a retaining frame (2), and a guard seat (4) arranged in sequence along the axial direction of the rotating shaft; the cover ring (1) and the guard seat (4) form a mounting ring cavity; the retaining frame (2) and the needle rollers (3) are located in the mounting ring cavity; N≥2; The retaining frame (2) has N needle holes (21) uniformly distributed along the circumference thereof and adapted to fit the needle rollers (3); The needle roller (3) is arranged in the needle hole (21), and the needle roller (3) is a cylindrical structure, and is in line contact with the cover ring (1) and the guard seat (4) respectively, and is used to rotate when the turbine (5) rotates at a high speed and move circumferentially along the guard seat (4); The axial length of the cover ring (1) is greater than the diameter of the needle roller (3), and is used to buckle the retaining frame (2) and the needle roller (3) onto the guard seat (4), and a gap is provided between the cover ring (1) and the guard seat (4); the guard seat (4) is pressed into the interior of the guide wheel (7), and the cover ring (1) is in contact with the turbine (5), and is used to reduce the wear of the turbine (5) on the guide wheel (7) when the turbine (5) rotates at a high speed.

2. A torque converter with a multifunctional retainer according to claim 1, characterized in that: The protective seat (4) comprises an annular body (41) and a limiting member (42) coaxially arranged in the annular body (41); the axial length of the limiting member (42) is smaller than the axial length of the cover ring (1); The annular body (41) is arranged inside the guide wheel (7), and its outer diameter is matched with the inner diameter of the mounting hole of the guide wheel (7); The limiting member (42) is connected to the inner wall of the annular body (41), and its inner diameter is matched with the outer diameter of the rotating shaft.

3. A torque converter with a multifunctional retainer according to claim 2, characterized in that: The retaining frame (2) comprises an inner ring (22), M convex connecting members (23) and an outer ring (24) coaxially arranged outside the inner ring (22), M≥2; The axial height of the convex connecting piece (23) is smaller than the diameter of the needle roller (3); one end of the convex connecting piece (23) is connected to the outer wall of the inner ring (22), and the other end is connected to the inner wall of the outer ring (24); M convex connecting pieces (23) and the inner ring (22) and the outer ring (24) form M needle holes (21); The inner diameter of the inner ring (22) is adapted to the outer diameter of the limiting member (42); The outer diameter of the outer ring (24) is matched with the inner diameter of the cover ring (1).

4. A hydraulic torque converter with a multifunctional retainer according to claim 3, characterized in that: The cover ring (1) comprises an annular cover body (11) extending in the axial direction and an annular cover plate (12) extending in the radial direction; One end of the annular cover body (11) is connected to the outer side of the annular cover plate (12); The inner diameter of the annular cover body (11) is matched with the outer diameter of the outer ring (24).

5. A hydraulic torque converter with a multifunctional retainer according to claim 4, characterized in that: A plurality of protrusions (44) are arranged on the inner wall of the limiting member (42), and limiting grooves (45) are formed between adjacent protrusions (44).

6. A hydraulic torque converter with a multifunctional retainer according to claim 5, characterized in that: The outer side wall end portion of the limiting member (42) corresponding to the inner ring (22) is provided with a plurality of first buckles (43) for limiting the axial movement of the inner ring (22).

7. A hydraulic torque converter with a multifunctional retainer according to claim 6, characterized in that: A plurality of second buckles (13) are provided on the inner side wall of the other end of the annular cover body (11) for limiting the axial movement of the outer ring (24).

8. The torque converter with a multifunctional retainer according to claim 5, characterized in that: There are six protrusions (44), and the six protrusions (44) are evenly arranged on the inner wall of the limiting member (42).

9. The torque converter with a multifunctional retainer according to claim 1, characterized in that: The rolling needle (3) and the needle hole (21) are clearance-matched.

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