Automatic centrifugal drive shaft disc pushing and lifting mechanism

Abstract

The invention provides an automatic centrifugal driving shaft disc pushing and lifting mechanism. The automatic centrifugal driving shaft disc pushing and lifting mechanism comprises a driving shaft disc, a plurality of centrifugal rollers, a driven clutch disc and a plurality of elastic pieces. The driving shaft disc is provided with a first surface and a second surface; the plurality of guide chutes are formed on the first surface; the multiple guide holes penetrate through the driving shaft disc, and each guide hole is located between any two adjacent guide sliding grooves. The centrifugal roller is arranged in the guide sliding groove. The driven clutch disc is coaxially arranged on the driving shaft disc and is provided with a disc body, a plurality of assembling pieces and a plurality of abutting pieces, and the disc body is in contact with the centrifugal roller; the assembly piece is arranged in the guide hole in a penetrating manner; the abutting piece is arranged on the assembling piece. The elastic piece is arranged on the assembling piece, and one end of the elastic piece abuts against the abutting piece. By drawing the position of the elastic piece relative to the centrifugal roller in the radial direction, the torque borne by the elastic piece can be reduced, and the risk of breakage is reduced.

Description

Technical Field

[0001] The invention relates to a component of a power transmission system, in particular to a clutch structure, and specifically to an automatic centrifugal drive shaft disc pushing mechanism. Background Art

[0002] The clutch is a device used to transfer the engine power of a machine to the wheel axle of a vehicle in a switch-like manner. The operating principle of the clutch in the prior art is to first rotate a disc in the engine, and use centrifugal force to throw the centrifugal roller on the disc along the slope. During the throwing process, the centrifugal roller squeezes the push-up disc, so that the clutch plate on the push-up disc and the clutch housing contact and rub against each other to drive the clutch housing to rotate, so as to achieve the purpose of power transmission. However, the torsional transmission of this design is mainly borne by a single columnar guide pin on the disc, the lower end of which is connected to the disc, and the upper end is connected to the push-up disc; therefore, when the engine accelerates or decelerates, the upper and lower ends of the columnar guide pin will be out of sync. Therefore, after long-term use, if the columnar guide pin has uneven material, it may crack or even break due to stress concentration; in this way, the synchronous operation of the clutch will stop instantly, the engine will idle and lose power, causing great driving risks.

[0003] To solve the aforementioned problems, a person skilled in the art has proposed a clutch as proposed in the invention patent with publication number TWI582316B in Taiwan, China. In the clutch, after the driving shaft rotates, the centrifugal roller will be thrown out along the slope. During the throwing process, the centrifugal roller squeezes and pushes the passive clutch plate, and then the passive clutch plate and the driving plate are in surface contact with each other in a large area, thereby driving the driving plate to rotate and achieving the purpose of power output; in this, a plurality of cylindrical assembly parts are provided on the side of the passive clutch plate facing the driving plate, and a plurality of elastic parts are sleeved on the assembly parts, and the two ends of the elastic parts are respectively in contact with the passive clutch plate and the driving plate to ensure that the distance of the passive clutch plate during displacement is equidistant displacement, thereby avoiding the problem of uneven contact.

[0004] However, in the radial direction, the position where the assembly and the passive clutch plate are connected to each other and the position of the elastic member are different from the position of the centrifugal roller; specifically, the assembly and the elastic member are located at a relatively inner circle position, while the centrifugal roller rolls at a relatively outer circle position. In other words, the assembly, the elastic member, and the centrifugal roller are not on the same ring plane; therefore, during the operation of the clutch, the centrifugal roller moves radially outward while pushing up the passive clutch plate, and moves farther and farther away from the assembly and the elastic member in the radial direction. Therefore, the assembly and the elastic member will be subjected to torque and cause stress to be concentrated at the connection between the elastic member and the passive clutch plate. After long-term use, the elastic member may be deformed or broken, resulting in the passive clutch plate not being displaced equidistantly and the contact between the driving plate being uneven, thereby reducing the efficiency of the synchronous rotation or making the linkage effect unstable. In addition, because heat is generated during the operation of the clutch, and the elastic member is set inside the clutch and is difficult to dissipate heat, it is necessary to spend a relatively high cost to use elastic members made of more heat-resistant materials.

[0005] In summary, it is necessary to propose a new technical means to solve the above-mentioned problems. Summary of the invention

[0006] The main purpose of the present invention is to provide an automatic centrifugal drive shaft disc pushing mechanism, which can reduce the force applied to the assembly or the torque applied to the elastic member, thereby reducing the risk of deformation or breakage of the assembly or the elastic member.

[0007] In order to achieve the above-mentioned purpose, the automatic centrifugal drive shaft disc pushing mechanism proposed by the present invention has:

[0008] A drive shaft disc having:

[0009] A first surface and a second surface, the first surface and the second surface are two opposite disk surfaces of the driving shaft disk;

[0010] A plurality of guide grooves, which are recessed on the first surface, are radially symmetrically distributed, and a bottom surface of each guide groove is inclined relative to the first surface; and

[0011] A plurality of guide holes, which penetrate the driving shaft disc, and each of the guide holes is located between any two adjacent guide grooves;

[0012] A plurality of centrifugal rollers, which are respectively disposed on the plurality of guide grooves and can move along the plurality of guide grooves;

[0013] A passive clutch plate is coaxially arranged on the drive shaft disc and can move relative to the drive shaft disc, and the passive clutch plate has:

[0014] A body, which contacts with the plurality of centrifugal rollers;

[0015] A plurality of assembly parts, one end of each of the assembly parts is connected to the sheet body, and the other ends of the plurality of assembly parts are respectively passed through the plurality of guide holes; and

[0016] A plurality of abutting members, which are respectively arranged at the other ends of the plurality of assembly members; and

[0017] A plurality of elastic members are respectively arranged on a plurality of the assembly members, and one end of each of the elastic members respectively abuts against the abutting member of the corresponding assembly member.

[0018] Therefore, the advantage of the present invention is that, since the guide hole is located between two adjacent guide slots, the position of the elastic member penetrating the guide hole and the centrifugal roller arranged in the guide slot are close in the radial direction, unlike the elastic member and the centrifugal roller described in the prior art, which are far apart in the radial direction; therefore, the torque received by the elastic member of the present invention is relatively reduced, and the stress concentration can be reduced; in addition, the passive clutch plate has a plurality of components, so when the speed of the drive shaft disc increases or decreases, the plurality of components can disperse the force, reduce the risk of material fatigue, even deformation or fracture caused by stress concentration, and further improve driving safety. In addition, because the elastic member is arranged on the outside of the clutch, rather than being arranged inside the clutch as in the prior art, the elastic member can be exempted from receiving the heat generated inside the clutch, and can also smoothly dissipate the conducted heat, so it is not necessary to spend a lot of money to use elastic members made of heat-resistant materials.

[0019] As described above, in the automatic centrifugal drive shaft disc pushing mechanism, each of the assembly parts is a convex column, and each of the elastic parts is a compression spring; each of the elastic parts is sleeved on the corresponding assembly part.

[0020] As described above, in the automatic centrifugal drive shaft disc pushing mechanism, the number of the plurality of elastic members corresponds to the number of the plurality of assembly members.

[0021] As described above, the automatic centrifugal drive shaft disc pushing mechanism, wherein the drive shaft disc also has a plurality of abutment grooves, which are recessed and formed on the second surface, and the plurality of abutment grooves are radially symmetrically distributed; the plurality of guide holes are respectively located at the positions of the plurality of abutment grooves, and the other end of each of the elastic members abuts against the bottom surface of the abutment groove.

[0022] As described above, the automatic centrifugal drive shaft disc pushing mechanism, wherein the drive shaft disc has an axial direction, which is perpendicular to the first surface; and the position of the bottom surface of each abutting groove in the axial direction is between the first surface and the bottom of the plurality of guide grooves.

[0023] As described above, the automatic centrifugal drive shaft disc pushing mechanism, wherein each of the guide slide grooves also has a guide rail, which is formed at the bottom of the guide slide groove, and the guide rail extends along the radial direction of the drive shaft disc; and each of the centrifugal rollers also has a guide portion, which is formed around the outer peripheral surface of the centrifugal roller and extends along the circumferential direction of the centrifugal roller, and the centrifugal roller can move along the extension direction of the guide rail.

[0024] As described above, the automatic centrifugal drive shaft disc pushing mechanism, wherein the guide rail is a protruding structure and protrudes from the bottom of the guide groove, and the guide portion is a recessed structure and is recessed inwardly along the radial direction of the centrifugal roller; the guide rail is located in the guide portion.

[0025] As described above, the automatic centrifugal drive shaft disc pushing mechanism, wherein each of the centrifugal rollers further comprises two ends, each of which is cylindrical; and a connecting portion, which is cylindrical, with both ends of the connecting portion respectively connected to the two ends and coaxially arranged with the two ends, and the outer diameter of the connecting portion is smaller than the outer diameter of the two ends.

[0026] As described above, the automatic centrifugal drive shaft disc pushing mechanism, wherein the disc body is in a circular ring shape.

[0027] As described above, the automatic centrifugal drive shaft disc pushing mechanism, wherein the drive shaft disc further comprises a central through hole, which is formed through the drive shaft disc, and a plurality of the guide grooves are radially distributed with the center of the central through hole as a reference. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0029] Figure 1 It is a three-dimensional appearance schematic diagram of the present invention.

[0030] Figure 2 It is a schematic diagram of the three-dimensional appearance from another viewing angle of the present invention.

[0031] Figure 3 It is a three-dimensional exploded schematic diagram of the present invention.

[0032] Figure 4 It is a partial side sectional schematic diagram of the present invention, which shows that the centrifugal roller is arranged in the guide groove.

[0033] Figure 5 It is a side sectional schematic diagram of the present invention.

[0034] Figure 6 It is a side cross-sectional schematic diagram of the present invention, which shows that the passive clutch plate is pushed up by the centrifugal roller. DETAILED DESCRIPTION

[0035] The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should all be considered to belong to the scope of the present invention.

[0036] First, please refer to Figures 1 to 3 The present invention provides an automatic centrifugal drive shaft disc pushing mechanism, which includes a drive shaft disc 10, a plurality of centrifugal rollers 20, a passive clutch plate 30, and a plurality of elastic members 40.

[0037] The drive shaft disc 10 has a first surface 11, a second surface 12, a central through hole 13, a plurality of guide grooves 14, a plurality of abutment grooves 15, and a plurality of guide holes 16. The first surface 11 and the second surface 12 are two opposite disc surfaces of the drive shaft disc 10, and the drive shaft disc 10 has an axial direction A, which is perpendicular to the first surface 11; the central through hole 13 is formed through the drive shaft disc 10 along the axial direction A, so that a bearing (not shown in the figure) can be inserted therein. In this embodiment, the outer peripheral surface of the drive shaft disc 10 and the second surface 12 are connected to each other in a rounded manner, but this is not limited thereto.

[0038] Please refer to Figures 3 to 5 The guide groove 14 is recessed and formed on the first surface 11 of the drive shaft disc 10, and the plurality of guide grooves 14 are radially symmetrically distributed with the center of the central through hole 13 as the reference. Specifically, the plurality of guide grooves 14 are arranged along the circumferential direction of the drive shaft disc 10 and are spaced apart from each other, and each guide groove 14 extends along the radial direction of the drive shaft disc 10; the bottom of each guide groove 14 is inclined relative to the first surface 11, and specifically, the guide groove 14 is an arc-shaped groove, and its bottom gradually approaches the first surface 11 from the inside to the outside along the radial direction of the drive shaft disc 10.

[0039] In this embodiment, each guide groove 14 may further have a guide rail 141, which is formed at the bottom of the guide groove 14 and extends along the radial direction of the drive shaft disk 10; in this embodiment, the guide rail 141 is a protruding structure, which protrudes from the bottom of the guide groove 14, but is not limited to this. The guide groove 14 may not have the guide rail 141, or the guide rail 141 may not be a protruding structure.

[0040] The abutment groove 15 is recessed and formed on the second surface 12 of the drive shaft disc 10. The abutment groove 15 is radially symmetrically distributed with the center of the central through hole 13 as the reference. Specifically, a plurality of abutment grooves 15 are spaced apart from each other along the circumferential direction. In this embodiment, the position of the groove bottom surface 151 of each abutment groove 15 in the axial direction A is between the first surface 11 and the bottom surface of the guide groove 14; in addition, in this embodiment, the position of each abutment groove 15 in the circumferential direction of the drive shaft disc 10 is located between two adjacent guide grooves 14, but it is not limited thereto; the position of each abutment groove 15 can be adjusted according to demand, as long as it is maintained in radial symmetry on the drive shaft disc 10.

[0041] The guide holes 16 penetrate the drive shaft disc 10 and are respectively located between two adjacent guide grooves 14 . Specifically, in this embodiment, each guide hole 16 is located at the position of the abutment groove 15 and passes through the first surface 11 and the groove bottom surface 151 of each abutment groove 15 .

[0042] The centrifugal rollers 20 are respectively disposed in the guide grooves 14 and can move along the guide grooves 14. Each centrifugal roller 20 may further have a guide portion 21, which surrounds the outer circumference of the centrifugal roller 20 and extends along the circumferential direction of the centrifugal roller 20, so that the centrifugal roller 20 can move along the extension direction of the guide rail 141; in this embodiment, Figure 4 As shown in FIG. 1 , the guide portion 21 is a concave structure and is concave inwardly along the radial direction of the centrifugal roller 20 , and the guide rail 141 of the guide groove 14 is located in the guide portion 21 , whereby the centrifugal roller 20 can roll along the guide rail 141 .

[0043] Specifically, if Figure 3 and Figure 4 As shown in , in this embodiment, each centrifugal roller 20 includes two end portions 22 and a connecting portion 23, each end portion 22 is cylindrical, and the connecting portion 23 is also cylindrical; the connecting portion 23 is coaxially arranged with the two end portions 22, and the two ends of the connecting portion 23 are respectively connected to the two end portions 22, and the outer diameter of the connecting portion 23 is smaller than the outer diameter of the two end portions 22, whereby the connecting portion 23 and the two end portions 22 can jointly form a concave structure of the guide portion 21. In addition, in this embodiment, the centrifugal roller 20 further has an axis 24, which penetrates and fixes the two end portions 22 and the connecting portion 23, but it is not limited thereto, and the detailed structure of the centrifugal roller 20 can be adjusted according to needs.

[0044] Please refer to Figures 1 to 4 The passive clutch plate 30 is coaxially arranged with the drive shaft disc 10 and can move relative to the drive shaft disc 10 along the axial direction A. The passive clutch plate 30 has a body 31, a plurality of assembly members 32, and a plurality of abutment members 33. Figure 4 As shown in FIG. 1 , the sheet body 31 and the centrifugal roller 20 are in contact with each other, and in this embodiment, the sheet body 31 is a flat ring, but the present invention is not limited thereto.

[0045] Please refer to Figure 2 and Figure 3 , each assembly member 32 is a convex column, and each assembly member 32 is inserted into each guide hole 16, one end of each assembly member 32 is connected to a surface of the sheet body 31 facing the drive shaft disc 10, and each abutment member 33 is respectively provided at the other end of the assembly member 32, and the abutment member 33 radially protrudes from the outer peripheral surface of the corresponding assembly member 32. In this embodiment, the abutment member 33 is a gasket, and the assembly member 32 is formed with a screw hole, which is screwed through the abutment member 33 and locked to the assembly member 32, but the present invention is not limited thereto.

[0046] A plurality of elastic members 40 are respectively disposed on the assembly member 32, and the two ends of each elastic member 40 respectively abut against the groove bottom surface 151 of the abutting groove 15 and the abutting member 33 of the corresponding assembly member 32. Specifically, each elastic member 40 is a compression spring and is respectively sleeved on the assembly member 32, and the two ends of the elastic member 40 respectively abut against the abutting member 33 and the groove bottom surface 151 of the abutting groove 15, so that when the plate body of the passive clutch plate 30 moves in a direction away from the driving shaft disc 10, the elastic member 40 will be compressed. In addition, in this embodiment, the number of the elastic members 40 corresponds to the number of the assembly members 32, but is not limited thereto. For example, in other embodiments, the number of the elastic members 40 may be less than the number of the assembly members 32.

[0047] Please refer to Figure 5 and Figure 6 ,like Figure 5 As shown in FIG. 1 , when the drive shaft disc 10 has not yet started to rotate, the elastic member 40 abuts against the groove bottom surface 151 of the abutting groove 15, and the position of the groove bottom surface 151 in the axial direction A is close to the position of the centrifugal roller 20 in the axial direction A, and the drive shaft disc 10 also pushes the passive clutch plate 30 to rotate at this position; then as shown in FIG. Figure 6 As shown, when the drive shaft disc 10 rotates to a predetermined rotation speed, the centrifugal roller 20 will move outward in the radial direction due to the centrifugal force, and roll along the guide groove 14 to push the plate body 31 of the passive clutch plate 30 upward in the figure, so that the passive clutch plate 30 is away from the drive shaft disc 10, thereby contacting and driving the driven part of the clutch (not shown in the figure) to rotate.

[0048] Among them, when the passive clutch plate 30 is pushed, unlike the prior art, the centrifugal roller 20 will not be greatly away from the elastic member 40; since the distance between the elastic member 40 and the centrifugal roller 20 of the present invention in the radial direction is reduced compared with the prior art, the torque borne is relatively small, which can reduce the stress concentration and is less likely to cause deformation or fracture, so even an elastic member with a smaller elastic coefficient can be used without worrying about fracture; in addition, when the speed of the drive shaft disc 10 is increased or decreased, since the passive clutch plate 30 has multiple components 32, the force can be dispersed, the risk of fracture caused by stress concentration can be reduced, and the durability and safety of use can be improved.

[0049] In addition, when the present invention is assembled to the clutch, the other components of the clutch will be arranged on one side of the first surface 11 of the drive shaft disc 10, so the elastic member 40 is arranged on the relatively outer side of the clutch, rather than being arranged inside the clutch as in the prior art. Therefore, the elastic member 40 can be free from receiving the heat generated inside the clutch, and can also smoothly dissipate the heat conducted, avoiding the need to consume a lot of cost by using heat-resistant materials. At the same time, since the elastic member 40 is arranged on the outer side of the clutch, it is also convenient for the user to disassemble and adjust it, and the elastic member 40 can be assembled or adjusted without disassembling the entire clutch.

[0050] In summary, the present invention can reduce the torque borne by the elastic member 40 when the clutch is accelerated or decelerated by setting the position between the assembly member 32 and the elastic member 40 relative to the centrifugal roller 20, thereby reducing the risk of deformation or breakage of the elastic member 40; in addition, the plurality of assembly members 32 are provided to share the force of acceleration or deceleration of the drive shaft disc 10, which is different from the prior art in which only a single column-shaped guide pin bears all the force, further reducing the risk of clutch damage, improving durability, and enhancing vehicle safety.

[0051] The detailed explanation of the above-mentioned embodiments is only intended to explain the present invention so as to facilitate a better understanding of the present invention. However, these descriptions cannot be interpreted as limitations on the present invention for any reason. In particular, the various features described in different embodiments may also be arbitrarily combined with each other to form other embodiments. Unless there is a clear description to the contrary, these features should be understood to be applicable to any embodiment and are not limited to the described embodiments.

Claims

1. An automatic centrifugal drive shaft disc pushing mechanism, characterized in that: The automatic centrifugal drive shaft disc pushing mechanism comprises: A drive shaft disc having: A first surface and a second surface, the first surface and the second surface are two opposite disk surfaces of the driving shaft disk; A plurality of guide grooves, which are recessed on the first surface, are radially symmetrically distributed, and the bottom surface of each guide groove is inclined relative to the first surface; and A plurality of guide holes, which penetrate the drive shaft disc, and each of the guide holes is located between any two adjacent guide grooves; A plurality of centrifugal rollers, which are respectively disposed on the plurality of guide grooves and can move along the plurality of guide grooves; A passive clutch plate is coaxially arranged on the drive shaft disc and can move relative to the drive shaft disc, and the passive clutch plate has: A body, which contacts with the plurality of centrifugal rollers; A plurality of assembly parts, one end of each of the assembly parts is connected to the sheet body, and the other ends of the plurality of assembly parts are respectively penetrated through the plurality of guide holes; as well as A plurality of abutting members, which are respectively arranged at the other ends of the plurality of the set members; as well as A plurality of elastic members are respectively arranged on a plurality of the assembly members, and one end of each of the elastic members abuts against the abutting member of the corresponding assembly member.

2. The automatic centrifugal drive shaft disc pushing mechanism according to claim 1, characterized in that: Each of the assembly components is a convex column, and each of the elastic components is a compression spring; each of the elastic components is sleeved on the corresponding assembly component.

3. The automatic centrifugal drive shaft disc pushing mechanism according to claim 2, characterized in that: The number of the plurality of elastic members corresponds to the number of the plurality of assembly members.

4. The automatic centrifugal drive shaft disc pushing mechanism according to claim 1, characterized in that: The drive shaft disc also features: A plurality of abutment grooves are formed concavely on the second surface, and the plurality of abutment grooves are radially symmetrically distributed; the plurality of guide holes are respectively located at the positions of the plurality of abutment grooves, and the other end of each elastic member abuts against the bottom surface of the abutment groove.

5. The automatic centrifugal drive shaft disc pushing mechanism according to claim 4, characterized in that: The drive shaft disc has an axial direction, which is perpendicular to the first surface; and The position of the groove bottom surface of each abutting groove in the axial direction is between the first surface and the groove bottoms of the plurality of guide grooves.

6. The automatic centrifugal drive shaft disc pushing mechanism according to any one of claims 1 to 5, characterized in that: Each guide chute also has: A guide rail is formed at the bottom of the guide groove, and the guide rail extends along the radial direction of the drive shaft disc; and Each of the centrifugal rollers also has: A guide portion is formed around the outer peripheral surface of the centrifugal roller and extends along the circumferential direction of the centrifugal roller. The centrifugal roller can move along the extending direction of the guide rail.

7. The automatic centrifugal drive shaft disc pushing mechanism according to claim 6, characterized in that: The guide rail is a protruding structure and protrudes from the bottom of the guide groove, and the guide portion is a concave structure and is concave inwardly along the radial direction of the centrifugal roller; the guide rail is located in the guide portion.

8. The automatic centrifugal drive shaft disc pushing mechanism according to claim 7, characterized in that: Each of the centrifugal rollers also comprises: two ends, each of which is cylindrical; and A connecting part is cylindrical, and the two ends of the connecting part are respectively connected to the two end parts and are coaxially arranged with the two end parts. The outer diameter of the connecting part is smaller than the outer diameters of the two end parts.

9. The automatic centrifugal drive shaft disc pushing mechanism according to claim 8, characterized in that: The sheet body is in the shape of a ring.

10. The automatic centrifugal drive shaft disc pushing mechanism according to claim 9, characterized in that: The drive shaft disc also includes: A central through hole is formed through the driving shaft disc, and a plurality of guide grooves are radially distributed with the center of the central through hole as a reference.

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