Hydraulic torque converter connecting device
By designing a liquid torque converter connection device including the outer fixing block, the inner fixing block, and the spring ring, the problem of the existing liquid torque converter cover the difficulty of controlling the accuracy of the pores of the threaded pores, and the high -precision thread connect.
Patent Information
- Application Number
- CN202411370052.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-01-28
AI Technical Summary
The threaded hole position and dimensional accuracy of existing torque converter cover assembly is difficult to control, and welding deformation will affect the position and size of the thread.
A liquid torque converter connection device is designed, including the outer fixing block, the inner fixing block and the spring ring. The outer fixing block and the lid assembly are connected through gas protection welding, and the inner fixing block is connected to the outer fixing block through the step hole. The spring ring is coordinated in the circular groove to limit the movement of the inner fixed block to ensure the accuracy of the thread.
Through this device, the position of the position of the step hole is high, and it is not affected by the fixed block welding deformation. The screw size and accuracy of the inner fixed block are not affected by welding deformation, and the thread accuracy is higher.
Smart Images
Figure CN119373847A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of automobile torque converters, and in particular to a torque converter connection device. Background Art
[0002] The automobile torque converter is a key component used in cars with automatic transmissions such as AT and CVT. The torque converter uses the flow of liquid to smoothly transfer the engine torque to the automatic transmission. The torque converter is composed of multiple parts, which are filled with automatic transmission oil and installed between the engine and the automatic transmission. At present, the single-stage two-phase three-element locking integrated torque converter composed of a pump assembly, a turbine assembly, a guide wheel assembly, a cover assembly and a locking clutch assembly is widely used in cars.
[0003] The fixed block on the cover assembly of the existing torque converter is connected to the flywheel by threads, and the fixed block of the cover assembly is connected to the cover by gas shielded welding. Among them: the fixed block is heat treated and the threaded hole is processed. After the fixed block is connected to the cover by gas shielded welding, the position of the threaded hole of the fixed block needs to be controlled. The existing method for controlling the position of the threaded hole of the torque converter cover assembly is to ensure it by positioning the welding tool with the threaded hole of the fixed block. Due to the problem of welding deformation, the position of the thread and the size of the threaded hole will change after welding. At the same time, after the welding positioning tool is positioned with the threaded hole of the fixed block, there is a risk of damaging the threaded hole of the fixed block during the welding deformation process. At the same time, it is difficult to control the position and the size accuracy of the threaded hole of the fixed block after welding.
[0004] Therefore, it is of great significance to develop a torque converter connection device.
[0005] Invention patent content
[0006] The purpose of this patent is to provide a hydraulic torque converter connection device to solve the problems existing in the prior art.
[0007] The technical solution adopted to achieve the patent purpose of the present invention is as follows: a torque converter connection device includes an outer fixing block, an inner fixing block and a spring ring.
[0008] The outer fixing block is a rectangular block as a whole. The lower end of the outer fixing block is fixedly connected to the cover assembly by gas shielded welding. A step hole is provided on the upper surface of the outer fixing block. The step hole includes a large diameter section and a small diameter section from top to bottom. An annular groove I is provided on the inner wall of the small diameter section.
[0009] The inner fixed block is a stepped rotating body as a whole. The stepped rotating body includes a large diameter cylinder and a small diameter cylinder from top to bottom. An annular groove II is provided on the outer wall of the small diameter cylinder. The stepped rotating body is provided with threaded holes penetrating the upper and lower surfaces along the axial direction.
[0010] The spring ring is a circular ring structure. The spring ring is sleeved in the annular groove II. The spring ring and the annular groove II are interference fit.
[0011] The inner fixing block is press-fitted into the step hole. The small diameter cylinder is embedded in the small diameter section. The small diameter cylinder and the small diameter section are interference fit. The annular groove I and the annular groove II enclose an annular cavity. The spring ring is accommodated in the annular cavity. The large diameter cylinder is embedded in the large diameter section. The large diameter cylinder and the large diameter section are clearance fit. The flywheel is connected to the inner fixing block through a threaded hole.
[0012] Furthermore, the outer diameter of the large diameter cylinder is 0.02 mm to 0.3 mm smaller than the aperture of the large diameter section. The outer diameter of the small diameter cylinder is 0.02 mm to 0.1 mm larger than the aperture of the small diameter section.
[0013] Furthermore, the maximum outer diameter of the cover assembly is 240 mm to 290 mm. The diameter of the small diameter section is 14 mm to 18 mm. The hole depth of the small diameter section is 9 mm to 15 mm. The diameter of the large diameter section is 16 mm to 22 mm. The hole depth of the large diameter section is 2 mm to 4 mm. The groove depth of the annular groove I is 0.3 mm to 0.6 mm. The groove width of the annular groove I is 1 mm to 2 mm. The distance between the annular groove I and the lower end of the large diameter section is 2 mm to 4 mm.
[0014] Furthermore, the groove depth of the annular groove II is 0.5 mm to 0.9 mm, the groove width of the annular groove II is 1 mm to 2 mm, and the distance between the annular groove II and the lower end surface of the large diameter cylinder is 2 mm to 4 mm.
[0015] Furthermore, the spring ring is made of spring steel.
[0016] The technical effect of the patent of this invention is unquestionable: the position tolerance accuracy of the stepped hole is high and is not affected by the welding deformation of the fixed block. The thread size and accuracy of the inner fixed block are not affected by the welding deformation, and its thread accuracy is higher. The spring ring limits the movement of the inner fixed block relative to the outer fixed block along the press-fitting direction, solving the problem that the thread size accuracy is not affected by the welding of the fixed block. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a working schematic diagram of the torque converter connection device;
[0018] Figure 2 is a structural schematic diagram of a cover assembly;
[0019] Figure 3 This is an exploded view of the cover assembly;
[0020] Figure 4 This is a cross-sectional diagram of the fixed block.
[0021] In the figure: pump wheel assembly 1, guide wheel assembly 2, pump wheel thrust bearing 3, turbine thrust bearing 4, turbine assembly 5, locking clutch assembly 6, cover assembly 7, outer fixing block 8, step hole 801, large diameter section 8011, small diameter section 8012, annular groove I 802, inner fixing block 9, large diameter cylinder 901, small diameter cylinder 902, annular groove II 903, threaded hole 904, spring ring 10. DETAILED DESCRIPTION
[0022] The present invention is further described below in conjunction with the embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to the common technical knowledge and customary means in the field, which should be included in the protection scope of the present invention.
[0023] Embodiment 1:
[0024] See also Figure 2 , Figure 3 and Figure 4 This embodiment provides a torque converter connection device, including an outer fixing block 8, an inner fixing block 9 and a spring ring 10.
[0025] The outer fixing block 8 is a rectangular block as a whole. The lower end of the outer fixing block 8 is fixedly connected to the cover assembly 7 by gas shielded welding. A step hole 801 is provided on the upper surface of the outer fixing block 8. The step hole 801 includes a large diameter section 8011 and a small diameter section 8012 from top to bottom. An annular groove I 802 is provided on the inner wall of the small diameter section 8012.
[0026] The inner fixing block 9 is a stepped rotating body. The stepped rotating body includes a large diameter cylinder 901 and a small diameter cylinder 902 from top to bottom. An annular groove II 903 is provided on the outer wall of the small diameter cylinder 902. The stepped rotating body is provided with a threaded hole 904 penetrating the upper and lower surfaces along the axial direction.
[0027] The spring ring 10 is a circular ring structure. The spring ring 10 is sleeved in the annular groove II 903. The spring ring 10 and the annular groove II 903 are interference fit.
[0028] The inner fixing block 9 is press-fitted into the step hole 801. The small diameter cylinder 902 is embedded in the small diameter section 8012. The small diameter cylinder 902 and the small diameter section 8012 are interference fit. The annular groove I 802 and the annular groove II 903 enclose an annular cavity. The spring ring 10 is accommodated in the annular cavity. The large diameter cylinder 901 is embedded in the large diameter section 8011. The large diameter cylinder 901 and the large diameter section 8011 are clearance fit. The flywheel is connected to the inner fixing block 9 through the threaded hole 904.
[0029] In this embodiment, the outer fixing block 8 and the cover assembly 7 are connected by gas shielded welding, and the step hole 801 is processed after welding to ensure the position accuracy of the step hole 801. Then the inner fixing block 9 is connected to the outer fixing block 8 by press fitting. The device has a simple structure and has the advantages of high thread position accuracy, simple control, and small thread size change.
[0030] Embodiment 2:
[0031] The main contents of this embodiment are the same as those of embodiment 1, wherein the outer diameter of the large diameter cylinder 901 is 0.02mm to 0.3mm smaller than the aperture of the large diameter section 8011. The outer diameter of the small diameter cylinder 902 is 0.02mm to 0.1mm larger than the aperture of the small diameter section 8012. The maximum outer diameter of the cover assembly 7 is 240mm to 290mm. The diameter of the small diameter section 8012 is 14mm to 18mm. The hole depth of the small diameter section 8012 is 9mm to 15mm. The diameter of the large diameter section 8011 is 16mm to 22mm. The hole depth of the large diameter section 8011 is 2mm to 4mm. The groove depth of the annular groove I802 is 0.3mm to 0.6mm. The groove width of the annular groove I802 is 1mm to 2mm. The distance between the annular groove I802 and the lower end of the large diameter section 8011 is 2mm to 4mm. The depth of the annular groove II 903 is 0.5 mm to 0.9 mm. The width of the annular groove II 903 is 1 mm to 2 mm. The distance between the annular groove II 903 and the lower end surface of the large diameter cylinder 901 is 2 mm to 4 mm.
[0032] Embodiment 3:
[0033] The main contents of this embodiment are the same as those of Embodiment 1 or 2, wherein the material of the spring ring 10 is spring steel.
[0034] Embodiment 4:
[0035] This embodiment applies any one of the embodiments 1 to 3 to a single-stage two-phase three-element locking type integrated hydraulic torque converter widely used in cars. Figure 1The hydraulic torque converter includes a pump wheel assembly 1, a guide wheel assembly 2, a pump wheel thrust bearing 3, a turbine thrust bearing 4, a turbine assembly 5, a locking clutch assembly 6 and a cover assembly 7. The pump wheel assembly 1 is an active component, which is connected to the flywheel by being fixedly connected to the cover assembly 7, converting mechanical energy into liquid energy, guiding the liquid to impact the turbine blades, causing the blades to rotate and drive the turbine assembly 5, thereby realizing the conversion of liquid energy into mechanical energy. The turbine assembly 5 is a passive component connected to the transmission input shaft, and the guide wheel assembly 2 between the two impellers is fixed to the automatic transmission oil pump cover through a one-way clutch and a guide wheel sleeve, while the locking clutch assembly 6 is installed between the cover assembly 7 and the turbine assembly 5.
Claims
1. A torque converter connection device, characterized in that: It comprises an outer fixing block (8), an inner fixing block (9) and a spring ring (10); The outer fixing block (8) is a rectangular block as a whole; the lower end of the outer fixing block (8) is fixedly connected to the cover assembly (7) by gas shielded welding; a step hole (801) is provided on the upper surface of the outer fixing block (8); the step hole (801) includes a large diameter section (8011) and a small diameter section (8012) from top to bottom; an annular groove I (802) is provided on the inner wall of the small diameter section (8012); The inner fixing block (9) is a stepped rotating body as a whole; the stepped rotating body comprises a large diameter cylinder (901) and a small diameter cylinder (902) from top to bottom; an annular groove II (903) is provided on the outer wall of the small diameter cylinder (902); the stepped rotating body is provided with threaded holes (904) penetrating the upper and lower surfaces along the axial direction; The spring ring (10) is a circular ring structure; the spring ring (10) is sleeved in the annular groove II (903); the spring ring (10) and the annular groove II (903) are interference fit; The inner fixing block (9) is press-fitted into the step hole (801); the small diameter cylinder (902) is embedded in the small diameter section (8012); the small diameter cylinder (902) and the small diameter section (8012) are interference fit; the annular groove I (802) and the annular groove II (903) enclose an annular cavity; the spring ring (10) is accommodated in the annular cavity; the large diameter cylinder (901) is embedded in the large diameter section (8011); the large diameter cylinder (901) and the large diameter section (8011) are clearance fit; the flywheel is connected to the inner fixing block (9) via a threaded hole (904).
2. A torque converter connection device according to claim 1, characterized in that: The outer diameter of the large-diameter cylinder (901) is 0.02 mm to 0.3 mm smaller than the aperture of the large-diameter section (8011); the outer diameter of the small-diameter cylinder (902) is 0.02 mm to 0.1 mm larger than the aperture of the small-diameter section (8012).
3. A torque converter connection device according to claim 1, characterized in that: The maximum outer diameter of the cover assembly (7) is 240 mm to 290 mm; the diameter of the small diameter section (8012) is 14 mm to 18 mm; the hole depth of the small diameter section (8012) is 9 mm to 15 mm; the diameter of the large diameter section (8011) is 16 mm to 22 mm; the hole depth of the large diameter section (8011) is 2 mm to 4 mm; the groove depth of the annular groove I (802) is 0.3 mm to 0.6 mm; the groove width of the annular groove I (802) is 1 mm to 2 mm; and the distance between the annular groove I (802) and the lower end of the large diameter section (8011) is 2 mm to 4 mm.
4. A torque converter connection device according to claim 3, characterized in that: The groove depth of the annular groove II (903) is 0.5 mm to 0.9 mm; the groove width of the annular groove II (903) is 1 mm to 2 mm; and the distance between the annular groove II (903) and the lower end surface of the large diameter cylinder (901) is 2 mm to 4 mm.
5. A torque converter connection device according to claim 1, characterized in that: The material of the spring ring (10) is spring steel.