A hydraulic torque converter with concave guide

Abstract

The invention relates to a hydraulic torque converter with a concave guide, comprising: a housing, a pump wheel, a guide wheel and a turbine, the pump wheel comprising a plurality of first blades and a first guide ring, the first blades are inclined and diverge outward from the center of the pump wheel, the first guide ring is arranged on the inner edge of the first blade, a first auxiliary blade is arranged in the front quarter of the first blade, the bending direction of the first auxiliary blade is opposite to the inclination direction of the first blade, a plurality of longitudinal holes and transverse holes are arranged on the first auxiliary blade, the longitudinal holes and the transverse holes are connected to each other, the turbine comprises a plurality of second blades and a second guide ring, the second blades are arranged in a curved shape and diverge outward from the center of the turbine, the bending direction of the second blades is the same as the inclination direction of the first blades, the second guide ring is arranged on the inner edge of the second blade, the second blades are also arc-shaped in cross section, the thickness of the second blades gradually decreases from the head and tail ends to the middle, and the guide wheel comprises a plurality of third blades surrounding the guide wheel.

Description

Technical Field

[0001] The invention relates to the field of hydraulic torque converters, and in particular to a hydraulic torque converter with a concave guide. Background Art

[0002] The hydraulic torque converter is also called "hydraulic torque converter", "turbine torque converter" or "dynamic hydraulic torque converter". It is a type of hydraulic transmission component. It consists of a pump wheel, a turbine wheel and a guide wheel. The pump wheel is connected to the driving shaft and can convert the mechanical energy input by the driving shaft into the kinetic energy and pressure head of the liquid by the action of centrifugal force for the turbine to do work. The turbine is connected to the driven shaft and can output the kinetic energy of the liquid and the energy contained in the pressure head from the driven shaft. The existing widely used hydraulic torque converter has the ability of stepless continuous speed change and torque change, and has good automatic adjustment and adaptability to external loads. It makes the car start smoothly and accelerate quickly and evenly. Its shock absorption effect reduces the dynamic load and torsional vibration of the transmission system, prolongs the service life of the transmission system, and improves comfort, passability, safety and average driving speed.

[0003] However, the hydraulic torque converters currently in use generally have the problem that the turbine torque cannot be increased more quickly. Summary of the invention

[0004] Purpose of the invention:

[0005] In order to overcome the disadvantage pointed out in the background art, that is, the problem that the turbine torque of the hydraulic torque converter cannot be increased more quickly, an embodiment of the present invention provides a hydraulic torque converter with a concave guide.

[0006] Technical solution:

[0007] A hydraulic torque converter with a concave guide, comprising: a housing, a pump wheel, a guide wheel and a turbine, wherein the pump wheel is connected and fixed to one side of the housing, the turbine is arranged on a side of the housing opposite to the pump wheel and is not fixed to the housing, the guide wheel is arranged at a middle position between the pump wheel and the turbine, the pump wheel comprises a plurality of first blades and a first guide ring, the first blades are inclined and diverge outward from the center of the pump wheel, the first guide ring is arranged on the inner edge of the first blade, a first auxiliary blade is arranged at the front quarter of the first blade, and the bending direction of the first auxiliary blade is the same as that of the first blade The inclination direction is opposite to that of the first auxiliary blade, a plurality of longitudinal holes and transverse holes are arranged on the first auxiliary blade, the longitudinal holes and the transverse holes are communicated with each other, the turbine comprises a plurality of second blades and a second guide ring, the second blades are arranged in a curved shape and diverge outward from the center of the turbine, the bending direction of the second blades is the same as the inclination direction of the first blades, the second guide ring is arranged on the inner eaves of the second blades, the second blades are also arc-shaped in cross section, and the thickness of the second blades gradually decreases from the head and tail ends to the middle, the guide wheel comprises a plurality of third blades, and the third blades surround the guide wheel.

[0008] As a preferred embodiment of the present invention, it also includes a flywheel, a rotating shaft, a transmission connecting shaft input shaft and a fixed shaft, the flywheel is connected to the back side of the shell, the rotating shaft is connected to the flywheel, an open pipe is arranged on the front side of the shell, the turbine and the pump wheel are at a position where the central axes coincide, the transmission connecting shaft input shaft is connected to the center position of the turbine and extends from the opening of the shell, the fixed shaft is connected to the center position of the guide wheel through a one-way clutch and extends from the opening of the shell connected to the pump wheel, and the fixed shaft is fixed to an external component.

[0009] As a preferred embodiment of the present invention, the cross section of the pump wheel, the cross section of the turbine wheel and the cross section of the guide wheel visually form a complete ring.

[0010] As a preferred embodiment of the present invention, the third blade is provided with a third auxiliary blade, the third auxiliary blade is vertically arranged relative to the third blade, and the third auxiliary blade is bent toward the outermost side of the third blade.

[0011] As a preferred embodiment of the present invention, the shell also includes a gasket, which is annular and has a convex cross-section. The convex portion of the gasket contacts the back side of the turbine, and the outer edge and inner edge of the gasket are fixed to the inner side of the shell. The gasket is made of soft material.

[0012] As a preferred embodiment of the present invention, a concave ring is arranged on the back of the shell, the concave ring corresponds to the convex part of the gasket, the concave ring and the convex part of the gasket form an annular space, a plurality of springs are arranged in the annular space, one end of the spring is connected to the front side of the concave ring, and the other end is connected to the back side of the gasket.

[0013] As a preferred embodiment of the present invention, the turbine also includes a second auxiliary blade, the shape proportions of the second auxiliary blade are consistent with those of the second blade, the length of the second auxiliary blade is shorter than that of the second blade, the second auxiliary blade is arranged parallel to the second blade, the second auxiliary blade is located at the inner edge of the turbine, and the second auxiliary blade is adjacent to the guide wheel.

[0014] As a preferred embodiment of the present invention, the transmission connecting shaft is provided with a plurality of fourth blades, the fourth blades extend to the guide wheel and are adjacent to the guide wheel, the fourth blades are inclined and the inclination direction is opposite to the bending direction of the second blades.

[0015] The present invention achieves the following beneficial effects:

[0016] 1. The present invention increases the flow rate of the oil from the pump wheel to the turbine by adjusting the size of the opening through which the oil passes when rushing from the pump wheel to the turbine, thereby increasing the impact force of the oil rushing to the turbine, thereby making the output torque of the turbine further greater than the input torque of the pump wheel.

[0017] 2. The present invention increases the flow rate of the oil in part of the second blade of the turbine by setting the second blade of the turbine to be concave, thereby increasing the flow rate of the overall oil, thereby increasing the reaction force obtained by the turbine when the turbine rushes towards the guide wheel, and further increasing the output torque of the turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the pump wheel, guide wheel and turbine when they are stationary;

[0020] Figure 3 This is a brief schematic diagram of the oil flow when the present invention is working;

[0021] Figure 4 Schematic diagram of the axial direction of the pump wheel of the present invention (positive);

[0022] Figure 5 Schematic diagram of the turbine axial direction of the present invention (reverse);

[0023] Figure 6 It is a radial schematic diagram of the guide wheel of the present invention. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] like Figure 1-6 A hydraulic torque converter with concave guide includes: a housing 1, a pump wheel 2, a guide wheel 3 and a turbine 4, wherein the pump wheel 2 is connected and fixed to one side of the housing 1, the turbine 4 is arranged on the side of the housing 1 opposite to the pump wheel 2 and is not fixed to the housing 1, the guide wheel 3 is arranged at the middle position between the pump wheel 2 and the turbine 4, the pump wheel 2 includes a plurality of first blades 5 and a first guide ring 6, the first blade 5 is inclined and diverges outward from the center of the pump wheel 2, the first guide ring 6 is arranged on the inner edge of the first blade 5, the first auxiliary blade 7 is arranged in the front quarter of the first blade 5, and the bending direction of the first auxiliary blade 7 is the same as that of the first The inclination directions of the blades 5 are opposite. A plurality of longitudinal holes and transverse holes are arranged on the first auxiliary blade 7. The longitudinal holes are connected to the transverse holes. The turbine 4 includes a plurality of second blades 8 and a second guide ring 9. The second blades 8 are arranged in a curved shape and radiate outward from the center of the turbine 4. The bending direction of the second blades 8 is the same as the inclination direction of the first blades 5. The second guide ring 9 is arranged on the inner edge of the second blade 8. The second blade 8 is also arc-shaped in cross section. The thickness of the second blade 8 gradually decreases from the head and tail ends to the middle. The guide wheel 3 includes a plurality of third blades 10, and the third blades 10 surround the guide wheel 3.

[0026] In one embodiment, the torque converter also includes a flywheel 11, a rotating shaft 12, a transmission connecting shaft 13 input shaft and a fixed shaft, the flywheel 11 is connected to the back of the housing 1, the rotating shaft 12 is connected to the flywheel 11, an open pipe is arranged on the front of the housing 1, the turbine 4 and the pump wheel 2 are at a position where the center axes coincide, the transmission connecting shaft 13 input shaft is connected to the center position of the turbine 4 and extends from the opening of the housing 1, the fixed shaft is connected to the center position of the guide wheel 3 through a one-way clutch and extends from the opening of the housing connected to the pump wheel 2, and the fixed shaft is fixed to an external component.

[0027] In one embodiment, the cross section of the pump wheel 2 , the cross section of the turbine wheel 4 , and the cross section of the stator wheel 3 visually form a complete ring.

[0028] In one embodiment, the third blade 10 is provided with a third auxiliary blade 14 , the third auxiliary blade 14 is vertically arranged relative to the third blade 10 , and the third auxiliary blade 14 is bent toward the outermost side of the third blade 10 .

[0029] As a preferred embodiment of the present invention, the shell 1 also includes a gasket 15, which is annular and has a convex cross-section. The convex portion of the gasket 15 contacts the back side of the turbine 4, and the outer edge and inner edge of the gasket 15 are fixed to the inner side of the shell 1. The gasket 15 is made of soft material.

[0030] In one embodiment, a concave ring is provided on the back of the shell 1, and the concave ring corresponds to the convex portion of the gasket 15. The concave ring and the convex portion of the gasket 15 form an annular space, and a plurality of springs 16 are provided in the annular space, and one end of the spring 16 is connected to the front side of the concave ring, and the other end is connected to the back side of the gasket 15.

[0031] In one embodiment, the turbine 4 also includes a second auxiliary blade 17, the shape proportions of the second auxiliary blade 17 are consistent with those of the second blade 8, the length of the second auxiliary blade 17 is shorter than that of the second blade 8, the second auxiliary blade 17 is arranged parallel to the second blade 8, the second auxiliary blade 17 is located at the inner edge of the turbine 4, and the second auxiliary blade 17 is adjacent to the guide wheel 3.

[0032] In one embodiment, the transmission connecting shaft 13 is provided with a plurality of fourth blades, the fourth blades extending to the guide wheel 3 and adjacent to the guide wheel 3 , the fourth blades are inclined and the inclination direction is opposite to the bending direction of the second blades 8 .

[0033] In the specific implementation process, Figure 1 In the AA direction, Figure 2 For example, the flywheel 11 rotates clockwise to drive the connected housing 1 to rotate clockwise, and the pump wheel 2 is connected and fixed to the housing 1, so that the pump wheel 2 also rotates clockwise, and the turbine 4 is arranged in the housing 1. Although it is not connected and fixed to the housing 1, it is affected by the rotation of the housing 1 and the transmission oil transmitted by the pump wheel 2, and the turbine 4 can also rotate clockwise very quickly.

[0034] For the oil set in the torque converter, when the housing 1 drives the pump wheel 2 to rotate, the oil will flow from the inner edge to the outer edge of the first blade 5 under the action of centrifugal force. In the process of flowing to the outer edge, the oil will pass through the first auxiliary blade 7. Since the bending direction of the first auxiliary blade 7 is opposite to the inclination direction of the first blade 5, that is, the first auxiliary blade 7 and the first blade 5 essentially reduce the inlet of the oil from the pump wheel 2 to the turbine 4. However, due to the bending of the first auxiliary blade 7, the distance that the oil actually flows is increased. Therefore, the oil can be further affected by the centrifugal force, so that the oil leaves the pump wheel 2 at a faster speed.

[0035] In order to avoid the problem of the first auxiliary blade 7 and the first blade 5 reducing the oil flow rate due to the inlet of the oil from the pump wheel 2 to the turbine 4, a plurality of longitudinal holes and transverse holes are opened on the first auxiliary blade 7, so that a part of the oil can be output outward through the longitudinal holes and the transverse holes. Since the diameters of the longitudinal holes and the transverse holes are very small, the oil passing through the longitudinal holes and the transverse holes is less than the oil flowing through the entire first auxiliary blade 7 and out of the opening left between the first auxiliary blade 7 and the first blade 5. Therefore, it can be ensured that the oil can flow out of the first blade 5 normally, and the flow rate of part of the oil can be kept at a higher state.

[0036] After the oil flows out from the first blade 5 and enters the second blade 8, the oil will impact the second blade 8. Since the second blade 8 is bent, the impact of the oil on the second blade 8 will cause the second blade 8 to be subjected to additional force, thereby causing the second blade 8 to rotate faster, thereby increasing the rotation speed of the turbine 4.

[0037] Furthermore, since the second auxiliary blade 17 is provided next to the second blade 8, the originally only one space between the two second blades 8 is divided into two, which makes the space volume and opening of the space smaller on the inside, thereby increasing the flow rate under the condition of unchanged flow rate, thereby increasing the speed of oil entering the guide wheel 3 from the turbine 4. After the oil enters the guide wheel 3, since a plurality of third auxiliary blades 14 are provided on the third blade 10, and the bending direction of the third auxiliary blade 14 is toward the outer edge, that is, the bending direction is along the radial direction, the oil in the guide wheel 3 can have a given flow channel under the action of centrifugal force, so that the oil can flow into the pump wheel 2 again in a direction, thereby completing a cycle.

[0038] When the turbine 4 rotates, it will generate a certain axial vibration. After the axial vibration, the turbine 4 will be displaced in the axial direction. After the displacement backward, it will squeeze the gasket 15, and the gasket 15 will squeeze the spring 16, so that the axial vibration of the turbine 4 can be mitigated to a certain extent. The fourth blade can give the oil leaked from the pump wheel 2-turbine 4-guide wheel 3 cycle a flow track that can be determined under the action of centrifugal force, so that the leaked oil can return to the pump wheel 2-turbine 4-guide wheel 3 cycle from the junction of the fourth blade and the second blade 8 under the action of centrifugal force.

[0039] For the second blade 8 of the turbine 4, as Figure 3 , B represents the pump wheel 2, W represents the turbine 4, and D represents the guide wheel 3. The oil rushes toward the turbine 4 at a relatively high speed through the centrifugal action of the pump wheel 2 and the guidance of the first blade 5, so that the turbine 4 is impacted by the oil and generates a tangential impact force, thereby driving the turbine 4 to rotate, and the oil flowing out from the second blade 8 of the turbine 4 impacts the third blade 10 of the guide wheel 3. Since the guide wheel 3 is fixed, the force of the oil impacting the guide wheel 3 will react with the turbine 4, thereby further accelerating the rotation of the turbine 4.

[0040] Since the shape of the second blade 8 is designed as described above, Figure 3 That is, there is a depression in the curved part of the second blade 8 relative to the overall shape of the second blade 8, that is, in fact, the flow rate of the oil on the side a is greater than the flow rate on the side b, so that the overall flow rate of the oil from the turbine 4 into the guide wheel 3 is accelerated, thereby making the impact force stronger and the reaction force stronger, thereby further increasing the rotation speed of the turbine 4, and allowing the turbine 4 to enter the coupling working point faster.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0045] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable technicians familiar with the technical field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

[0046] In the above mentioned drawings:

[0047] Shell-1;

[0048] Pump wheel-2;

[0049] Guide wheel-3;

[0050] Turbo-4;

[0051] First blade - 5;

[0052] First guide ring - 6;

[0053] First secondary blade - 7;

[0054] Second blade - 8;

[0055] Second guide ring - 9;

[0056] Third blade - 10;

[0057] Flywheel-11;

[0058] Shaft - 12;

[0059] Transmission connecting shaft-13;

[0060] The third blade - 14;

[0061] Spacer - 15;

[0062] Spring - 16 ;

[0063] Second blade - 17.

Claims

1. A torque converter with concave guide, characterized in that: include: case; Pump wheel; The pump wheel is connected and fixed to one side of the housing; turbine; The turbine is disposed on a side of the housing opposite to the pump wheel and is not fixed to the housing; and A guide wheel; the guide wheel is arranged at a middle position between the pump wheel and the turbine; The pump wheel comprises a plurality of first blades and a first guide ring, the first blades are inclined and diverge outward from the center of the pump wheel, the first guide ring is arranged on the inner edge of the first blade, a first auxiliary blade is arranged in the front quarter of the first blade, the bending direction of the first auxiliary blade is opposite to the inclination direction of the first blade, and a plurality of longitudinal holes and transverse holes are arranged on the first auxiliary blade, and the longitudinal holes and the transverse holes are connected to each other; The turbine includes a plurality of second blades and a second guide ring. The second blades are arranged in a curved shape and diverge outward from the center of the turbine. The bending direction of the second blades is the same as the inclination direction of the first blades. The second guide ring is arranged on the inner edge of the second blades. The second blades are also arc-shaped in cross section. The thickness of the second blades gradually decreases from the head and tail ends to the middle. Wherein, the guide wheel includes a plurality of third blades surrounding the guide wheel.

2. A hydraulic torque converter with concave guide according to claim 1, characterized in that: It also includes a flywheel, a rotating shaft, a transmission connecting shaft input shaft and a fixed shaft; Wherein, the flywheel is connected to the back side of the shell, the rotating shaft is connected to the flywheel, an open pipe is arranged on the front side of the shell, the turbine and the pump wheel are at a position where the central axes coincide, the transmission connecting shaft input shaft is connected to the center position of the turbine and extends out from the opening of the shell, the fixed shaft is connected to the center position of the guide wheel through a one-way clutch and extends out from the opening of the shell connected to the pump wheel, and the fixed shaft is fixed to an external component.

3. A hydraulic torque converter with concave guide according to claim 2, characterized in that: The cross section of the pump wheel, the cross section of the turbine wheel and the cross section of the stator wheel visually form a complete ring.

4. A hydraulic torque converter with concave guide according to claim 3, characterized in that: The third blade is provided with a plurality of third auxiliary blades, the third auxiliary blades are vertically arranged relative to the third blade, and the third auxiliary blades are bent toward the outermost side of the third blade.

5. A hydraulic torque converter with concave guide according to claim 4, characterized in that: The shell also includes a gasket, which is annular and has a convex cross-section. The convex portion of the gasket contacts the back of the turbine. The outer edge and inner edge of the gasket are fixed to the inner side of the shell. The gasket is made of soft material.

6. A hydraulic torque converter with concave guide according to claim 5, characterized in that: A concave ring is arranged on the back of the shell, and the concave ring corresponds to the convex part of the gasket. The concave ring and the convex part of the gasket form an annular space. A plurality of springs are arranged in the annular space, and one end of the spring is connected to the front side of the concave ring, and the other end is connected to the back side of the gasket.

7. A hydraulic torque converter with concave guide according to claim 6, characterized in that: The turbine also includes a second auxiliary blade, the shape proportions of the second auxiliary blade are consistent with those of the second blade, the length of the second auxiliary blade is shorter than that of the second blade, the second auxiliary blade is arranged parallel to the second blade, the second auxiliary blade is located at the inner edge of the turbine, and the second auxiliary blade is adjacent to the guide wheel.

8. A hydraulic torque converter with concave guide according to claim 7, characterized in that: The transmission connecting shaft is provided with a plurality of fourth blades, the fourth blades extending to the guide wheel and adjacent to the guide wheel, the fourth blades being inclined and the inclination direction being opposite to the bending direction of the second blades.

Images