Constant compression force helical spring clutch with angular self-adjustment

Abstract

This invention discloses a constant clamping force helical spring clutch with adaptive angle adjustment, relating to the field of automotive clutches. The clutch comprises a pressure plate, an intermediate plate, a pressure plate cover, two driven plates, a release bearing, a release rod, a support flange, multiple sets of obliquely positioned clamping springs, a spring seat, an adjusting plate, and an adjusting gear assembly. The clamping springs are obliquely arranged between the pressure plate cover and the support flange, and compensate for the clamping force attenuation caused by friction plate wear through adaptive angle changes, achieving a basically constant clamping force throughout its lifespan. The release rod forms a lever amplification mechanism with the adjusting plate as a fulcrum. The adjusting plate is connected to the pressure plate cover via a rectangular threaded connection, and the axial height is finely adjusted by the adjusting gear assembly. The dual-plate structure improves torque capacity and wear life. This invention offers stable clamping force, low release force, precise compensation, and long lifespan, making it suitable for high-torque conditions in heavy commercial vehicles and construction machinery.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile clutches, in particular to an angle self-adaptive constant compression force helical spring clutch. BACKGROUND

[0002] In the transmission system of heavy vehicles and engineering machinery, the clutch is the core component to ensure smooth power transmission and cut-off.

[0003] The current mainstream pull-type helical spring clutch adopts a parallel spring structure, which has the following technical defects: 1. Significant compression force attenuation: when the friction plate wears out, the spring compression amount decreases, and the compression force will decrease accordingly, requiring frequent adjustment to ensure the stability of the transmitted torque.

[0004] 2. Insufficient wear compensation capability: the traditional structure cannot adapt to the wear amount of the friction plate, and long-term use can easily cause clutch slip, ablation, and shorten the service life.

[0005] 3. Large separation operating force: the parallel arranged springs need to overcome a large axial resistance when separating, resulting in heavy pedal operation and affecting the driving experience. SUMMARY

[0006] The present application aims to overcome the shortcomings of the prior art and provide an angle self-adaptive constant compression force helical spring clutch, which solves the problems of the prior art, such as the compression force of the helical spring clutch easily attenuating with the wear of the friction plate, insufficient wear compensation capability, leading to clutch slip, ablation, and shortened service life, and large torque transmission instability and large separation operating force in high torque and high load conditions, and realizes constant output of the compression force of the clutch during the entire wear period of the friction plate, optimizes the separation operating performance, improves the reliability, durability, and adaptability of the clutch, and meets the use requirements of heavy commercial vehicles, engineering machinery, and other high torque and high load conditions.

[0007] The purpose of the present application is achieved by the following technical solution: the angle self-adaptive constant compression force helical spring clutch comprises: a pressure plate; a pressure plate cover, which is covered on the pressure plate to form a cavity therebetween, a plurality of sets of separation springs and compression springs are evenly distributed in the circumferential direction in the cavity, and the separation springs and the compression springs are staggered; a driven disc assembly, which is arranged on the side of the pressure plate away from the pressure plate cover; a support flange, which is arranged at the center of the cavity, each separation spring is installed parallel to the horizontal plane between the pressure plate cover and the support flange, each compression spring is installed inclined to the horizontal plane between the pressure plate cover and the support flange, and a clamping groove is formed on the outer wall of the support flange; The release bearing assembly passes through the pressure plate cover and is installed in the inner hole of the support flange, and the release bearing assembly is pressed against the support flange by a built-in spring; The adjusting plate is detachably mounted on the top wall of the pressure plate cover via an external thread on its outer circle. An internal spline is provided on the inner circle of the adjusting plate. Several hooks are evenly arranged along the circumference on the surface of the adjusting plate away from the pressure plate cover. Several separating rods, the number of which matches the number of hooks, one end of each separating rod is installed in the slot, and the other end of each separating rod is assembled with the corresponding hook through a window. A forming fulcrum is set on the side of the separating rod facing the pressure plate for contacting and pressing the pressure plate, so that the separating rod forms a force-saving lever structure with the adjusting plate as the fulcrum, the forming fulcrum as the resistance point, and the supporting flange as the power point. Several transmission plates are evenly distributed along the circumference of the outer edge of the pressure plate. One end of each transmission plate is fixed to the pressure plate by bolts, and the other end of each transmission plate is riveted to the pressure plate cover by rivets; and The adjusting gear assembly includes a bracket mounted on the pressure plate cover, an adjusting bolt passing through the bracket, and an adjusting gear connected and driven by the adjusting bolt. The adjusting gear is placed in the cavity and meshes with the internal spline for transmission. When the adjusting bolt is turned, the adjusting gear drives the adjusting disc to rotate relative to the pressure plate cover, thereby adjusting the position and height of the release bearing assembly. When the driven disk assembly wears, the separating rod and the support flange move further to one side of the driven disk assembly, the spring force F1 generated by the compression spring decreases, and the angle θ between F1 and its axial component force F3 also decreases, making F3 = F1 × cosθ relatively constant.

[0008] As a further technical solution, the driven plate assembly includes an outer driven plate assembly located away from the pressure plate, an inner driven plate assembly located close to the pressure plate, and an intermediate plate located between the outer driven plate assembly and the inner driven plate assembly. The outer circle of the intermediate plate is uniformly provided with a number of positioning bosses along the circumferential direction, and a number of ears are provided along the outer circumference of the pressure plate cover. The positioning bosses are embedded one-to-one into the positioning grooves opened on the ears, so that the intermediate plate is positioned relative to the pressure plate cover.

[0009] As a further technical solution, several sets of columnar protrusions and spherical protrusions are evenly distributed along the circumferential direction on the outer wall of the support flange, and the columnar protrusions and spherical protrusions are staggered; columnar protrusions and spherical protrusions are set on the top wall of the pressure plate cover in a one-to-one correspondence with the support flange, so that the two ends of the separation spring rest between the spherical protrusions of the support flange and the pressure plate cover, and the two ends of the compression spring rest between the columnar protrusions of the support flange and the pressure plate cover through the spring seat.

[0010] As a further technical solution, three sets of both the release spring and the compression spring are provided, with the compression springs arranged in pairs as a group.

[0011] As a further technical solution, a step is provided on the top wall of the pressure plate cover, and an internal thread is provided on the inner wall of the pressure plate cover corresponding to the step to cooperate with the external thread.

[0012] As a further technical solution, the adjusting gear assembly also includes an adjusting spring and a fixing bolt. A notch is made on the pressure plate cover at a position corresponding to the adjusting gear assembly. The adjusting gear assembly is fixed to the notch by the fixing bolt, and an adjusting spring is set between the adjusting bolt and the bracket.

[0013] The beneficial effects of this invention are as follows: 1. The pressure spring is arranged at an angle, which automatically reduces the axial force when the clutch is disengaged. Combined with the force-saving lever (disengagement lever amplification mechanism) structure, it significantly reduces the pedal disengagement force. The axial resistance that needs to be overcome during disengagement is smaller, making pedal operation more comfortable and improving the driving experience. 2. The clamping force is constant throughout the entire process. It adopts the principle of adaptive compensation of the angle of the inclined helical spring. After the friction plate wears, the spring inclination angle automatically decreases. The cosine value of the angle is increased to compensate for the decrease in spring force, so that the clamping force of the clutch remains basically unchanged throughout the entire wear cycle. This completely solves the problems of the clamping force of traditional clutches decreasing with wear, easy slippage, and burning, and ensures stable and reliable power transmission under high torque conditions. 3. The dual-plate structure design allows for twice the wear of the friction plates compared to a single-plate clutch, effectively extending its service life. Combined with the manual precision compensation mechanism of the adjusting gear assembly and adjusting disc, the clutch working height can be quickly restored without frequent disassembly and adjustment, making maintenance more convenient and durable. 4. The dual driven disc assembly allows for twice the wear of a single disc. When the clutch engages, it gradually presses together with the intermediate disc, resulting in a smooth and gentle clutch engagement process and a more stable start. The torque peak is smaller when the transmission shifts gears quickly, which can effectively reduce the impact on the transmission system, protect the transmission and transmission components, and extend the life of the entire vehicle's transmission system. 5. It adopts three pairs of six obliquely placed helical springs (compression springs) evenly arranged around the circumference, and is combined with release springs. It has symmetrical force distribution, smooth operation, and strong impact resistance. It is specially adapted to high-load and high-torque usage scenarios such as heavy vehicles and construction machinery. The overall structure has high strength and stable operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0015] Figure 2 for Figure 1 PP sectional view.

[0016] Figure 3 for Figure 2 A magnified view of a portion of region A (diagram of spring clamping force and its axial component).

[0017] Figure 4 This is a schematic diagram of the rear view structure of the present invention.

[0018] Figure 5 This is a three-dimensional structural diagram of the present invention with the driven disk assembly hidden.

[0019] Figure 6 This is a three-dimensional structural diagram of the present invention after concealing the driven disk assembly and pressure plate.

[0020] Figure 7 This is a three-dimensional structural diagram of the present invention after concealing the driven disk assembly, pressure plate, and part of the separation rod.

[0021] Figure 8 This is a three-dimensional structural diagram of the pressure plate cover in this invention.

[0022] Figure 9 This is a three-dimensional structural diagram of the present invention with the driven disk assembly and pressure plate cover concealed.

[0023] Figure 10 This is a schematic diagram of the assembly structure of the adjusting disc and adjusting gear assembly in this invention.

[0024] Figure 11 This is a schematic diagram of the assembly structure of the supporting flange, the separation spring, the compression spring, and the separation rod in this invention.

[0025] Explanation of reference numerals in the attached drawings: 1. Outer driven plate assembly; 2. Intermediate plate; 2-1. Positioning boss; 3. Inner driven plate assembly; 4. Pressure plate; 5. Transmission plate; 6. Bolt; 7. Adjusting plate; 7-1. Hook; 7-2. External thread; 7-3. Internal spline; 8. Separation spring; 9. Support flange; 9-1. Slot; 10. Separation bearing assembly; 10. Internal spring; 10-1. Spring seat; 11. Pressure plate cover; 12. Internal thread; 12-1. Notch; 12-2. Step; 12-3. Ear; 12-4. Positioning groove; 12-5. Compression spring; 13. Separation rod; 14. Window; 14-1. Forming fulcrum; 14-2. Adjusting gear assembly; 15. Bracket; 15-1. Adjusting gear; 15-2. Adjusting spring; 15-3. Adjusting bolt; 15-4. Fixing bolt; 15-5. Columnar protrusion; 16. Spherical protrusion; 17. Rivet; 18. Cavity; 19. Elastic force F1; Radial component force F2; Axial component force F3. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings: Example: As attached Figures 1-11 As shown, this angle-adaptive constant clamping force helical spring clutch includes a pressure plate 4, a pressure plate cover 12, a driven plate assembly, a support flange 9, a release bearing assembly 10, an adjusting plate 7, several release rods 14, several transmission plates 5, and an adjusting gear assembly 15.

[0027] Reference Appendix Figure 1 , 2 The pressure plate cover 12 is mounted on the pressure plate 4, forming a cavity 19 between them, such as... Figure 2 , 9 As shown, three sets of separation springs 8 and three sets of compression springs 13 are evenly distributed along the circumference inside the cavity 19. Preferably, as shown... Figure 1 As shown, the release spring 8 and the compression spring 13 are staggered. In addition, the compression spring 13 is arranged in pairs side by side as a group. In this embodiment, three pairs of six obliquely placed compression springs 13 are evenly arranged circumferentially, and together with the release spring 8, they have the advantages of symmetrical force distribution, smooth operation, and strong impact resistance. They are specially adapted to high-load and high-torque usage scenarios such as heavy vehicles and construction machinery, and have high overall structural strength and stable operation.

[0028] like Figure 2 As shown, the driven plate assembly is located on the side of the pressure plate 4 opposite to the pressure plate cover 12. Further, the driven plate assembly includes an outer driven plate assembly 1 located away from the pressure plate 4, an inner driven plate assembly 3 located closer to the pressure plate 4, and an intermediate plate 2 located between the outer driven plate assembly 1 and the inner driven plate assembly 3. When installed in the vehicle, the pressure plate 4 and the inner driven plate assembly 3 are always in contact (engaged). When separated, a separation gap is generated between the outer driven plate assembly 1 and the inner driven plate assembly 3. When the clutch pedal is slowly released, the pressure plate 4 gradually presses the inner driven plate assembly 3 and the outer driven plate assembly 1 together, eliminating the gap. (See attached diagram) Figure 4 , 8 Four positioning bosses 2-1 (four in this embodiment, but other numbers are also possible) are evenly arranged along the circumference of the outer circle of the middle disk 2. Four ears 12-4 (four in this embodiment, but other numbers are also possible) are arranged along the outer circumference of the pressure plate cover 12. The positioning bosses 2-1 are embedded one-to-one into the positioning grooves 12-5 opened on the ears 12-4, so that the middle disk 2 is positioned relative to the pressure plate cover 12.

[0029] Reference Appendix Figure 2 , 9 11. The support flange 9 is located at the center of the cavity 19. Each release spring 8 is installed parallel to the horizontal plane between the pressure plate cover 12 and the support flange 9. Each clamping spring 13 is installed obliquely to the horizontal plane between the pressure plate cover 12 and the support flange 9. When the release bearing assembly 10 moves towards the gearbox side via the release fork (clutch disengagement action), the release spring 8 provides a force towards the gearbox side, mainly to reduce the clutch disengagement force. Further, as... Figure 8 , 9As shown in Figure 11, three sets of columnar protrusions 16 and three sets of spherical protrusions 17 are evenly distributed along the circumference on the outer wall of the supporting flange 9, and the columnar protrusions 16 and spherical protrusions 17 are staggered. Columnar protrusions 16 and spherical protrusions 17 are correspondingly arranged on the top wall of the pressure plate cover 12 to the supporting flange 9, so that the two ends of the separating spring 8 rest between the supporting flange 9 and the spherical protrusions 17 of the pressure plate cover 12, and the two ends of the clamping spring 13 rest between the supporting flange 9 and the columnar protrusions 16 of the pressure plate cover 12 through the spring seat 11. An annular groove 9-1 is also formed on the outer wall of the supporting flange 9 away from the pressure plate cover 12.

[0030] like Figure 2 , 8 As shown in Figure 10, the adjusting disc 7 is detachably mounted on the top wall of the pressure plate cover 12 via an external thread 7-2 on its outer circumference. The inner circumference of the adjusting disc 7 is provided with an internal spline 7-3, and several hooks 7-1 are evenly arranged circumferentially on the surface of the adjusting disc 7 facing away from the pressure plate cover 12. Preferably, a step 12-3 is provided on the top wall of the pressure plate cover 12, and an internal thread 12-1 is provided on the inner wall of the pressure plate cover 12 corresponding to the step 12-3, which can engage with the external thread 7-2.

[0031] Reference Appendix Figure 6 , 7 10. The number of separating rods 14 matches the number of hooks 7-1. One end of each separating rod 14 is installed in the slot 9-1, and the other end of each separating rod 14 is assembled with the corresponding hook 7-1 through the opening 14-1. A forming fulcrum 14-2 is provided on the side of the separating rod 14 facing the pressure plate 4, which can contact and press the pressure plate 4, so that the separating rod 14 forms a force-saving lever structure with the adjusting plate 7 as the fulcrum, the forming fulcrum 14-2 as the resistance point, and the supporting flange 9 as the power point. Figure 2 , 3 As shown in Figure 11, the force-saving lever structure significantly reduces the pedal disengagement force, resulting in less axial resistance to overcome during clutch disengagement, more comfortable pedal operation, and an improved driving experience. Figure 2 For example, when the clutch is engaged, the support flange 9 and the release bearing assembly 10 move to the left to press the clutch disc (i.e., the friction disc of the driven disc assembly) with the hook 7-1 of the adjustment disc 7 (corresponding to the window 14-1 of the release rod 14) as the fulcrum; when the clutch is disengaged, the support flange 9 and the release bearing assembly 10 move to the right to release the clutch disc.

[0032] like Figure 2 , 6 As shown in Figures 7 and 8, the transmission plates 5 (four in this embodiment, but other quantities are also possible) are evenly distributed along the circumferential direction of the outer edge of the pressure plate 4. One end of each transmission plate 5 is fixed to the pressure plate 4 by bolts 6, and the other end of each transmission plate 5 is riveted to the pressure plate cover 12 by rivets 18.

[0033] likeFigure 2 , 9 As shown, during assembly, the release bearing assembly 10 is passed through the pressure plate cover 12 and installed in the inner hole of the support flange 9.

[0034] Reference Appendix Figure 6 , 7 9, 10. The adjusting gear assembly 15 includes a bracket 15-1 mounted on the pressure plate cover 12, an adjusting bolt 15-4 passing through the bracket 15-1, and an adjusting gear 15-2 driven by the adjusting bolt 15-4. The adjusting gear 15-2 is placed inside the cavity 19 and meshes with the internal spline 7-3 for transmission. When the position height of the release bearing assembly 10 further decreases due to wear of the friction plates of the driven disc assembly (at this time, the release bearing assembly 10 and the support flange 9 move together with the wear of the friction plates), the adjusting bolt 15-4 can be turned by using a socket wrench, which drives the adjusting disc 7 to rotate relative to the pressure plate cover 12, thereby adjusting the position height of the release bearing assembly 10. Figure 1 As shown, adjusting clockwise will restore the mounting height of the release bearing assembly 10.

[0035] Furthermore, such as Figure 8 , 10 As shown, the adjusting gear assembly 15 also includes an adjusting spring 15-3 and a fixing bolt 15-5. A notch 12-2 is provided on the pressure plate cover 12 at a position corresponding to the adjusting gear assembly 15. The adjusting gear assembly 15 is fixed to the notch 12-2 by the fixing bolt 15-5. An adjusting spring 15-3 is provided between the adjusting bolt 15-4 and the bracket 15-1. The adjusting spring 15-3 makes it easy to tighten the adjusting bolt 15-4 by hand without the need for external tools, making the adjustment more flexible and convenient.

[0036] like Figure 2 , 3 As shown, after installation (assembly), the release bearing assembly 10 presses the support flange 9 with its built-in spring 10-1. The support flange 9, in turn, presses the pressure plate 4 with the release rod 14. The pressure plate 4 is in close contact with the friction surface of the inner driven plate assembly 3, maintaining its follow-up motion. When the driven plate assembly wears, the release rod 14 and the support flange 9 move further towards the side where the driven plate assembly is located (i.e., Figure 2 On the left side, Figure 3 When the spring force F1 generated by the compression spring 13 decreases, the angle θ between F1 and its axial component force F3 also decreases, making F3 = F1 × cosθ relatively constant. F2 is the radial component force.

[0037] The working principle and process of this invention: The principle of constant (relative) clamping force, such as Figure 3 As shown.

[0038] F3 = COSθ × F1 × 6 × Leverage Ratio Taking the angle θ = 45° between F1 and F3 as an example, the number of compression springs 13 is 6, the force F1 after compression of the compression springs 13 is 720N, and the lever ratio is 7.2:1, then the following formula is obtained. F3=cos45°×720N×6×7.2≈22000N When the driven disc assembly wears 1 mm, the release lever 14 and the support flange 9 move further downwards, at which point the angle θ between F1 and F3 decreases. If the angle decreases to 40°, the spring compression force decreases to 680 N, then the clamping force is... F3=cos40°×680N×6×7.2≈22500N This shows that after the friction plates of the driven disc assembly wear, the force value remains relatively constant.

[0039] The magnitude of the axial component F3 of the pressure spring 13 is related not only to the magnitude of its deformation along its axis, but also to the magnitude of its angle θ with the horizontal line. Thus, the magnitude of its axial component does not decrease due to wear of the friction plates. When the clutch disengages, the inclined pressure spring 13 twists further, making its axis steeper; at this point, its axial horizontal component actually decreases, further reducing the pedal operating force.

[0040] Due to wear of the friction plates, the height of the release bearing assembly 10 further decreases (at this time, the release bearing assembly 10 and the support flange 9 move together with the wear of the friction plates). The release bearing assembly 10 can be adjusted to the desired height by adjusting the inner spline 7-3 of the inner ring of the adjusting disc 7 through the external spline teeth (adjusting gear 15-2) of the adjusting gear assembly 15. This adjusting gear assembly 15 is mainly achieved by pressing down on the adjusting bolt 15-4 with an Allen wrench and then adjusting it clockwise.

[0041] A dual-plate clutch allows for twice the wear of a single-plate clutch, thus its service life is longer. Because two friction plates (outer driven plate assembly 1 and inner driven plate assembly 3) work in parallel, the clutch engages gradually, resulting in smoother starting and lower torque peaks during rapid gear shifts, thus extending the transmission's lifespan.

[0042] When the clutch is in the engaged position, the axial force of the pressure spring 13 is amplified by the release rod 14 with a certain leverage ratio and pressed tightly onto the pressure plate 4. The pressing force is axially transmitted to the inner driven plate assembly 3, the intermediate plate 2 and then to the outer driven plate assembly 1.

[0043] When the clutch disengages, the release bearing assembly 10, which is installed in the inner hole of the support flange 9, is pulled outward together, and the obliquely placed compression spring 13 is further twisted. The pressure plate 4 is no longer subjected to the working pressure of the compression spring 13. At the same time, the pressure plate 4 is pulled away by the transmission plate 5 and does not contact the friction plate of the inner driven plate assembly 3. At this time, the clutch is completely disengaged.

[0044] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this invention should fall within the scope of protection of the appended claims.

Claims

1. A constant clamping force helical spring clutch with adaptive angle adjustment, characterized in that, include: Press plate (4); Pressure plate cover (12) is mounted on pressure plate (4) to form a cavity (19) between the two. Several sets of separation springs (8) and compression springs (13) are evenly distributed in the circumferential direction in the cavity (19), and the separation springs (8) and compression springs (13) are staggered. The driven plate assembly is located on the side of the pressure plate (4) away from the pressure plate cover (12); A support flange (9) is set at the center of the cavity (19). Each separation spring (8) is installed parallel to the horizontal plane between the pressure plate cover (12) and the support flange (9). Each clamping spring (13) is installed obliquely to the horizontal plane between the pressure plate cover (12) and the support flange (9). A slot (9-1) is opened on the outer wall of the support flange (9). The release bearing assembly (10) passes through the pressure plate cover (12) and is installed in the inner hole of the support flange (9), and the release bearing assembly (10) presses the support flange (9) by the built-in spring (10-1). The adjusting plate (7) is detachably mounted on the top wall of the pressure plate cover (12) by means of the external thread (7-2) set on its outer circle. The inner circle of the adjusting plate (7) is provided with an internal spline (7-3). Several hooks (7-1) are evenly arranged in the circumferential direction on the surface of the adjusting plate (7) away from the pressure plate cover (12). A number of separating rods (14) are matched with the number of hooks (7-1). One end of each separating rod (14) is installed in the slot (9-1), and the other end of each separating rod (14) is assembled with the corresponding hook (7-1) through the opening window (14-1). A forming fulcrum (14-2) is set on the side of the separating rod (14) facing the pressure plate (4) for contacting and pressing the pressure plate (4), so that the separating rod (14) forms a force-saving lever structure with the adjusting plate (7) as the fulcrum, the forming fulcrum (14-2) as the resistance point, and the supporting flange (9) as the power point. Several transmission plates (5) are evenly distributed along the circumferential direction of the outer edge of the pressure plate (4). One end of each transmission plate (5) is fixed to the pressure plate (4) by bolts (6), and the other end of each transmission plate (5) is riveted to the pressure plate cover (12) by rivets (18); and The adjusting gear assembly (15) includes a bracket (15-1) mounted on the pressure plate cover (12), an adjusting bolt (15-4) passing through the bracket (15-1), and an adjusting gear (15-2) connected and driven by the adjusting bolt (15-4). The adjusting gear (15-2) is placed in the cavity (19) and meshes with the internal spline (7-3) for transmission. When the adjusting bolt (15-4) is turned, the adjusting gear (15-2) drives the adjusting plate (7) to rotate relative to the pressure plate cover (12), thereby adjusting the position height of the release bearing assembly (10). When the driven disk assembly wears, the separating rod (14) and the support flange (9) move further to one side of the driven disk assembly, the elastic force F1 generated by the compression spring (13) decreases, and the angle θ between F1 and its axial component force F3 also decreases, so that F3 = F1 × cosθ is relatively constant.

2. The angle-adaptive adjustable constant clamping force helical spring clutch according to claim 1, characterized in that: The driven disk assembly includes an outer driven disk assembly (1) arranged away from the pressure plate (4), an inner driven disk assembly (3) arranged close to the pressure plate (4), and an intermediate disk (2) located between the outer driven disk assembly (1) and the inner driven disk assembly (3). The outer circle of the intermediate disk (2) is uniformly provided with a number of positioning bosses (2-1) along the circumferential direction, and a number of ears (12-4) are provided along the outer circumference of the pressure plate cover (12). The positioning bosses (2-1) are embedded one-to-one into the positioning grooves (12-5) opened on the ears (12-4) so ​​that the intermediate disk (2) is positioned relative to the pressure plate cover (12).

3. The angle-adaptive adjustable constant clamping force helical spring clutch according to claim 1, characterized in that: Several sets of columnar protrusions (16) and spherical protrusions (17) are evenly distributed along the circumferential direction on the outer wall of the supporting flange (9), and the columnar protrusions (16) and spherical protrusions (17) are staggered; columnar protrusions (16) and spherical protrusions (17) are set on the top wall of the pressure plate cover (12) in a one-to-one correspondence with the supporting flange (9), so that the two ends of the separation spring (8) are pressed between the supporting flange (9) and the spherical protrusions (17) of the pressure plate cover (12), and the two ends of the compression spring (13) are pressed between the supporting flange (9) and the columnar protrusions (16) of the pressure plate cover (12) through the spring seat (11).

4. The angle-adaptive adjustable constant clamping force helical spring clutch according to claim 1 or 3, characterized in that: The separation spring (8) and the compression spring (13) are each provided in three sets, and the compression spring (13) is arranged in two side by side as a set.

5. The angle-adaptive adjustable constant clamping force helical spring clutch according to claim 1, characterized in that: The pressure plate cover (12) has a step (12-3) on its top wall, and an internal thread (12-1) is provided on the inner wall of the pressure plate cover (12) corresponding to the step (12-3) to cooperate with the external thread (7-2).

6. The angle-adaptive adjustable constant clamping force helical spring clutch according to claim 1, characterized in that: The adjusting gear assembly (15) also includes an adjusting spring (15-3) and a fixing bolt (15-5). A notch (12-2) is made on the pressure plate cover (12) at a position corresponding to the adjusting gear assembly (15). The adjusting gear assembly (15) is fixed at the notch (12-2) by the fixing bolt (15-5), and an adjusting spring (15-3) is provided between the adjusting bolt (15-4) and the bracket (15-1).

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