CN114017482A

CN114017482A - Hydraulic torque converter

Info

Publication number: CN114017482A
Application number: CN202111341588.3A
Authority: CN
Inventors: 刘希忠
Original assignee: Ningbo Zhonghui Moulds Co ltd
Current assignee: Ningbo Zhonghui Moulds Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-02-08

Abstract

The application discloses torque converter belongs to car transmission parts technical field, still include the input connection spare including the pump impeller, first heat exchanger that looses, first sealed cowling, first casing, first class blade and first fender stream ring, first riveting groove that interior outer wall link up is seted up to first casing, first class blade is provided with first riveting end for the side of first casing, first class blade is through welding and first casing fixed connection again after first riveting end and first riveting groove peg graft, first fender stream ring sets up the second riveting groove that interior outer wall link up, first class blade is provided with the second riveting end for the side of first fender stream ring, the second riveting end is suitable for passing second riveting groove and rivets first fender stream ring and first class blade. The utility model provides the positioning accuracy of high blade when installing on the casing reduces the welding degree of difficulty of blade on the casing to improve torque converter's manufacturing efficiency, the design in the aspect of the structure reduces torque converter's use cost simultaneously.

Description

Hydraulic torque converter

Technical Field

The invention relates to the technical field of automobile transmission parts, in particular to a hydraulic torque converter.

Background

At present, a more smooth speed change process is realized by configuring a hydraulic torque converter in a transmission system of an automatic transmission vehicle, and compared with a traditional transmission structure, although the transmission efficiency of the hydraulic torque converter is lowered, the hydraulic torque converter is in soft connection with liquid in the speed change process, so that the jerking and contusion in the speed change process are greatly reduced, the damage to a transmission mechanism is smaller, and the driving experience of the vehicle can be well improved.

However, the existing torque converters still have some defects: for example, in the production process of a hydraulic torque converter, a blade needs to be fixed with a flow-limiting ring and a shell in a welding mode, the blade is a thin sheet which is small in size and has a curved surface, and a groove needs to be formed in the shell in order to facilitate quick positioning of the blade in the welding process, but the positioning capability of the groove is limited, especially the control on the inclination angle precision of the blade is poor, and the welding precision and efficiency are greatly influenced; and in the finished product aspect, current torque converter self radiating efficiency is not high, and it is comparatively serious to generate heat, only needs can carry out effectual heat dissipation with the help of supplementary radiating part, has improved torque converter's use cost. In order to better solve the above problems, a feasible optimization scheme is proposed.

Disclosure of Invention

The method aims to improve the positioning precision of the blade when the blade is installed on the shell and reduce the welding difficulty of the blade on the shell, so that the welding efficiency of the hydraulic torque converter is improved; meanwhile, the hydraulic torque converter is structurally designed, so that the spontaneous heat dissipation capability of the converter during working is improved, and the use cost of the hydraulic torque converter is reduced.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: the hydraulic torque converter comprises a pump impeller, a turbine and a guide wheel, wherein the pump impeller further comprises an input connecting piece, a first heat dissipation cover, a first sealing cover, a first shell, a first class of blades and a first flow blocking ring, the first shell is provided with a first riveting groove with a through inner wall and a through outer wall, the first riveting groove is produced by stamping and is used for facilitating positioning and installation of the blades, a first riveting end is arranged on the side edge of the first class of blades relative to the first shell, the first class of blades are fixedly connected with the first shell through welding after being spliced with the first riveting groove through the first riveting end, the first flow blocking ring is provided with a second riveting groove with a through inner wall and an through outer wall, a second riveting end is arranged on the side edge of the first class of blades relative to the first flow blocking ring, the second riveting end is suitable for being penetrated through the second riveting groove to rivet the first flow blocking ring and the first class of blades, the connecting difficulty of the first flow blocking ring and the first class of blades is reduced, the first sealing cover and the first heat dissipation cover are sequentially fixed on the outer side surface of the first shell, and the input connecting piece sequentially penetrates through the central holes of the first heat dissipation cover and the first sealing cover and is fixedly connected with the first shell to respectively play roles in sealing and dissipating heat of the pump wheel;

the turbine is used for lifting kinetic energy of oil liquid, the turbine is used for consuming the kinetic energy of the oil liquid and transmitting the kinetic energy to a next-stage gearbox, and the guide wheel is suitable for being arranged between the pump wheel and the turbine and used for changing a backflow angle of the oil liquid to increase torque.

Preferably, the number of the first type of blades is several, the first type of blades are uniformly distributed in an annular shape around a central shaft of the first shell, the number of the second riveting ends is two or three times, preferably two times, that of the first type of blades, and the second riveting ends are flattened on the first flow blocking ring in the same direction to realize riveting, so that the heat generated by oil due to friction can be effectively reduced in the distribution mode.

Preferably, the first sealing cover is tightly attached to the outer arc surface of the first shell, and the edge of the first sealing cover is fixedly connected with the first shell in a welding mode, so that the first sealing cover in close contact can play a good role in sealing the first shell even if the welding is not very tight.

Preferably, the arc-shaped heat dissipation sheet formed by pressing through a stamping process is arranged on the first heat dissipation cover, the contact area between the first heat dissipation cover and air can be effectively increased, meanwhile, air is stirred to accelerate heat dissipation when the pump wheel rotates, and the first heat dissipation cover is tightly attached to the outer side cambered surface of the first sealing cover and is fixedly connected with the first sealing cover through welding at the edge.

Preferably, the first heat dissipation cover, the first sealing cover and the first shell are fixedly connected at the central hole through welding, the first heat dissipation cover is fixedly connected with the input connecting piece through welding, the structural stability of the pump wheel during high-speed rotation can be guaranteed without extra connecting pieces in the fixing mode, meanwhile, the welding direction is single, and the machining efficiency is higher.

Preferably, the turbine also comprises a second flow blocking ring, a second type of blades, a second heat dissipation cover, an output connecting piece, a second shell and a second sealing cover, a plurality of groups of fourth riveting grooves which are uniformly distributed in a ring shape are arranged on the second shell, a fourth riveting end is arranged on one side of the second type of blade opposite to the second shell, the second type of blade is fixedly connected with the second shell through welding after being spliced with the fourth riveting groove through the fourth riveting end, and a third riveting end is arranged on one side of the second blade, which is first opposite to the second flow blocking ring, the second flow blocking ring is provided with third riveting grooves corresponding to the third riveting ends in position and quantity, and a plurality of third riveting ends correspondingly penetrate through the third riveting grooves and then are flattened on the second flow blocking ring in the same direction to realize riveting fixation.

Preferably, the second sealing cover is tightly attached to the outer arc surface of the second housing, and the edge of the second sealing cover is fixedly connected with the second housing through welding.

Preferably, the side surface of the second heat dissipation cover is provided with an arc-shaped heat dissipation sheet made by stamping, the second heat dissipation cover is tightly attached to the outer arc surface of the second sealing cover, and the edge of the second heat dissipation cover is fixedly connected with the second sealing cover by welding.

Preferably, the output connecting piece sequentially penetrates through the center holes of the second heat dissipation cover and the second sealing cover and then is fixedly connected with the second shell through welding.

Preferably, the second heat dissipation cover, the second sealing cover and the second shell are fixedly connected at the central through hole by welding, the second heat dissipation cover is fixedly connected with the output connecting piece by welding, and the components and the connection relationship among the components are consistent with those of the pump impeller, so that the structural advantage of the turbine is the same as that of the pump impeller.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the clamping structure is arranged between the blade and the shell, so that the positioning effect and the mounting precision of the blade during mounting are effectively improved, the subsequent welding and fixing are facilitated, the combination difficulty of the main body part of the torque converter is reduced, and the production efficiency of the hydraulic torque converter is improved;

(2) through addding the sealed cowling and radiating cover, can guarantee the leakproofness of the back casing that punches on the one hand, can to a great extent improve the spontaneous radiating efficiency of torque converter simultaneously, save the use cost of supplementary radiating part, further reduced use cost when having reduced manufacturing cost.

Drawings

FIG. 1 is a schematic illustration of the torque converter in assembled relation;

FIG. 2 is a sectional view showing an internal structure of the torque converter;

FIG. 3 is an exploded view of the impeller structure of the torque converter;

FIG. 4 is an enlarged view of a portion of the torque converter at A of FIG. 3;

FIG. 5 is an enlarged fragmentary view of the torque converter at B of FIG. 3;

FIG. 6 is a perspective view of a first type of blade of the torque converter;

FIG. 7 is an assembled perspective view of the turbine of the torque converter and the guide rail;

FIG. 8 is an enlarged fragmentary view of the torque converter at C of FIG. 7;

FIG. 9 is a schematic perspective view of a turbine of the torque converter;

FIG. 10 is a perspective view of a second type of blade of the torque converter;

fig. 11 is an internal structural view of a second housing of the torque converter.

In the figure: 1. a pump impeller; 101. an input connector; 102. a first heat dissipation cover; 103. a first seal cover; 140. a first housing; 141. a first riveting groove; 150. a first type of blade; 151. a first riveted end; 152. a second riveted end; 160. a first flow blocking ring; 161. a second riveting groove; 2. a turbine; 210. a second baffle ring; 211. a third riveting groove; 220. a second type of blade; 221. a fourth riveted end; 222. a third riveted end; 203. a second heat dissipation cover; 204. an output connector; 250. a second housing; 251. a fourth riveting groove; 206. a second seal cap; 3. and (4) a guide wheel.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The torque converter shown in fig. 1-11 comprises three main components, namely a pump impeller 1, a turbine impeller 2 and a guide wheel 3:

wherein, pump impeller 1 comprises a plurality of parts, includes: an input connection 101 adapted to connect the entire impeller 1 with the output of the engine; the first heat dissipation cover 102 can well help the pump impeller 1 to dissipate heat by tilting an arc-shaped sheet punched on the surface; a first seal cover 103 for sealing the inner space of the pump impeller 1 and performing a heat conduction function; the first shell 140 is formed by a plurality of groups of first riveting grooves 141 which are formed in a punching mode, are arranged in an annular and equidistant mode and are communicated with the inner wall and the outer wall; the first-class blade 150 is of an arc-shaped structure formed by stamping, wherein a first riveting end 151 is reserved on one side edge of the first-class blade, and a second riveting end 152 is reserved on the other side edge of the first-class blade; the first baffle ring 160 is also made by stamping process and has a plurality of groups of second riveting grooves 161 with uniformly arranged annular sheets.

The final product of the pump wheel 1 is an integrated structure, and the combination steps of the components are as follows: firstly, squaring a first shell 140, then inserting a first riveting end 151 of a first type of blade 150 into a first riveting groove 141 of the first shell 140, wherein the first type of blade 150 can stably stand on the first shell 140, a plurality of groups of the first type of blade 150 correspond to the first riveting groove 141, and the first riveting groove 141 can be welded after being sequentially fully inserted, and the first type of blade 150 standing in the first shell 140 has good position and angle accuracy without being positioned again, so that the welding efficiency and quality are effectively improved; the first flow blocking ring 160 is installed after all the first type blades 150 are welded, and as the fixed first type blades 150 are very regular in directivity and are annularly and equidistantly arranged, the second riveting ends 152 on the first type blades 150 are also relatively regular, the second riveting grooves 161 on the first flow blocking ring 160 corresponding to the first type blades 150 in number can be easily inserted, and after all the second riveting ends 152 are inserted, each second riveting end 152 is flattened in the same direction by using a small hammer, so that the first flow blocking ring 160 can be installed; although the first-type blades 150 are fixed on the first shell 140 by welding, the first riveting groove 141 on the first shell 140 cannot be completely sealed, so that the first shell 140 is covered by the first sealing cover 103 on the outer side of the first shell 140 and is welded with the first shell 140 densely along the edge of the first sealing cover 103, and the welding speed is very high because the welding directionality of the first sealing cover 103 and the first shell 140 is very consistent; similarly, the first heat dissipation cover 102 is welded on the outer side of the first sealing cover 103, so that the heat can be dissipated automatically when the hydraulic torque converter works; and finally, the input connecting piece 101 is sequentially inserted into the first heat radiating cover 102, the first sealing cover 103 and the first shell 140 and is welded and fixed, so that the integrated processing and manufacturing of the pump wheel 1 can be completed.

In addition, the turbine 2 is also composed of similar components, and comprises a second baffle ring 210, wherein a plurality of third riveting grooves 211 which are annularly arranged, equidistantly arranged and are through are punched on the side surface of the second baffle ring by a stamping process; a second blade 220 formed by stamping and having a third riveting end 222 on one side and a fourth riveting end 221 on the other side; the second shell 250 is also provided with a plurality of groups of annular equidistant arrangement and penetrates through the fourth riveting grooves 251 under the stamping action, and is suitable for efficiently and accurately mounting the second type of blades 220; a second sealing cap 206 sealing an inner space of the second housing 250; a second heat radiation cover 203 for accelerating the heat radiation speed of the turbine 2; an output connection 204 for connecting the turbine 2 to the input of the gearbox.

The final product of the turbine 2 is also a unitary structure, whose assembly steps of the parts are similar to those of the impeller 1: similarly, the second shell 250 is squared, then the fourth rivet ends 221 of the second blades 220 are correspondingly inserted into the fourth rivet grooves 251 of the second shell 250, and then welded and fixed, after all the second blades 220 are fixed on the second shell 250, the second baffle ring 210 can be placed on the second blade 220 group arranged in order, and each third rivet end 222 on the second blades 220 correspondingly penetrates into the third rivet groove 211 of the second baffle ring 210, then the third rivet ends 222 are installed in one direction and are flattened on the second baffle ring 210, so that the second baffle ring 210 can be fixed, the second sealing cover 206 and the second heat dissipation cover 203 are sequentially fixed on the outer side surface of the second shell 250 through welding, so that the sealing and heat dissipation effects on the turbine 2 are distributed, and finally the output connecting piece 204 sequentially penetrates through the second sealing cover 203, the second heat dissipation cover 206 and the second shell 250 to fix the three together through welding, the integrated machining and manufacturing of the turbine 2 is completed.

When the final pump impeller 1 and the turbine 2 are used in a matched manner, the guide wheel 3 is nested between the first flow baffle ring 160 and the second flow baffle ring 210, and the flow direction and the flow mode of oil are well limited by the blocking effect of the first flow baffle ring 160 and the second flow baffle ring 210.

The working principle is as follows: the pump impeller 1 receives power transmitted by an engine, the first type of blades 150 drive oil to rotate at a high speed, the oil can be thrown out through the outer side of the first flow blocking ring 160 and enters the turbine 2 through the outer side of the second flow blocking ring 210, the oil impacts the second type of blades 220 to transmit kinetic energy to the turbine 2, the oil with reduced kinetic energy impacts the blades of the guide wheel 3 through the inner ring of the second flow blocking ring 210, the flowing direction of the oil can be changed and returns to the pump impeller 1 through the inner ring of the first flow blocking ring 160, the rotating speeds of the pump impeller 1 and the turbine 2 are different in the process, soft connection of power transmission is achieved, when the rotating speed difference between the pump impeller 1 and the turbine impeller is large, the transmitted torque is large, and torque conversion is achieved.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. The utility model provides a torque converter, includes pump impeller, turbine and guide pulley, its characterized in that: the pump impeller further comprises an input connecting piece, a first heat dissipation cover, a first sealing cover, a first shell, a first class of blades and a first flow blocking ring, wherein the first shell is provided with a first riveting groove with communicated inner and outer walls, the first class of blades are provided with first riveting ends on the side edge relative to the first shell, the first class of blades are fixedly connected with the first shell through welding after being spliced with the first riveting grooves through the first riveting ends, the first flow blocking ring is provided with a second riveting groove with communicated inner and outer walls, the first class of blades are provided with second riveting ends on the side edge relative to the first flow blocking ring, the second riveting ends are suitable for penetrating through the second riveting grooves to rivet the first flow blocking ring and the first class of blades, the first sealing cover and the first heat dissipation cover are sequentially fixed on the outer side surface of the first shell, and the input connecting piece sequentially penetrates through center holes of the first heat dissipation cover and is fixedly connected with the first shell Fixedly connecting;

the component composition and the hierarchical relation of the turbine are consistent with the pump wheel, and the guide wheel is suitable for being arranged between the pump wheel and the turbine.

2. A hydrodynamic torque converter as defined in claim 1 wherein: the number of the first type of blades is a plurality, the first type of blades are uniformly distributed in an annular mode around a central shaft of the first shell, the number of the second riveting ends is two or three times that of the first type of blades, and the second riveting ends are knocked flat on the first flow blocking ring in the same direction to realize riveting.

3. A hydrodynamic torque converter as defined in claim 1 wherein: the first sealing cover is tightly attached to the outer side arc surface of the first shell, and the edge of the first sealing cover is fixedly connected with the first shell in a welding mode.

4. A hydrodynamic torque converter as defined in claim 3 wherein: the first heat dissipation cover is provided with an arc-shaped heat dissipation sheet pressed by a stamping process, the first heat dissipation cover is tightly attached to the outer side arc surface of the first sealing cover, and the edge of the first heat dissipation cover is fixedly connected with the first sealing cover through welding.

5. A hydrodynamic torque converter as defined in claim 4 wherein: the first heat dissipation cover, the first sealing cover and the first shell are fixedly connected through welding at the central hole, and the first heat dissipation cover is fixedly connected with the input connecting piece through welding.

6. A hydrodynamic torque converter as defined in claim 1 wherein: the turbine also comprises a second flow blocking ring, a plurality of groups of fourth riveting grooves which are uniformly distributed in an annular mode, a second heat dissipation cover, an output connecting piece, a second shell and a second sealing cover, wherein the second shell is provided with a fourth riveting end on one side opposite to the second shell, the second blades are fixedly connected with the second shell through welding after being spliced with the fourth riveting grooves through the fourth riveting ends, a third riveting end is arranged on one side of the second blades which is first opposite to the second flow blocking ring, the second flow blocking ring is provided with third riveting grooves corresponding to the third riveting ends in position and number, and the third riveting ends correspondingly penetrate through the third riveting grooves and then are flattened on the second flow blocking ring in the same direction to realize riveting fixation.

7. A hydrodynamic torque converter as defined in claim 6 wherein: the second sealing cover is tightly attached to the outer arc surface of the second shell, and the edge of the second sealing cover is fixedly connected with the second shell through welding.

8. A hydrodynamic torque converter as defined in claim 7 wherein: the side of the second heat dissipation cover is provided with an arc-shaped heat dissipation sheet made by stamping, the second heat dissipation cover is tightly attached to the outer side arc surface of the second sealing cover, and the edge of the second heat dissipation cover is fixedly connected with the second sealing cover through welding.

9. A hydrodynamic torque converter as defined in claim 6 wherein: the output connecting piece penetrates through the center holes of the second heat dissipation cover and the second sealing cover in sequence and then is fixedly connected with the second shell through welding.

10. A hydrodynamic torque converter as defined in claim 9 wherein: the second heat dissipation cover, the second sealing cover and the second shell are fixedly connected at the central through hole through welding, and the second heat dissipation cover is fixedly connected with the output connecting piece through welding.