CVT (continuously variable transmission) device

Abstract

The invention discloses a CVT (continuously variable transmission). Telescopic one-way ratchets are arranged at the two ends in a steel chain unit hole, and a spring is arranged between the two one-way ratchets to achieve the telescopic effect. A plurality of positive and negative ratchets can axially stretch out and draw back the chain units and are connected into a complete steel chain through pin shafts. Forward and reverse one-way ratchets capable of axially stretching out and drawing back on the steel chain and one-way ratchets fixed on left and right cone discs of the driving and driven reducing wheels are in transmission in a right-angle-to-right-angle meshing mode, and the problem that the CVT does not slip during stepless speed change is solved.

Description

Technical Field

[0001] The present invention relates to a CVT continuously variable transmission device, in particular to a continuously variable transmission with a steel chain meshing with the teeth of a V-grooved pulley. Background Art

[0002] Currently, in the well-known CVT continuously variable transmission, the steel belt or steel chain and the V-grooved pulley are in frictional meshing transmission. The steel chain or steel belt relies on a very strong tension to press against the V-grooved pulley to transmit power, which is not suitable for large-torque transmission. Summary of the Invention

[0003] In order to overcome the problem of easy slipping of the CVT continuously variable transmission under large torque, the present invention provides a continuously variable transmission that will not slip regardless of the size of the transmitted torque, and the steel chain can easily transmit power without being tightened tightly.

[0004] The technical solution adopted by the present invention to solve the technical problem is: The main body of the steel chain link unit is a rectangular parallelepiped with a wider outer width and a narrower inner width. The center of the rectangular parallelepiped chain link unit is a round hole, in which a spring is installed in the middle, and axially telescopic one-way ratchets are installed at both ends of the hole. The axially telescopic one-way ratchet meshes with the fixed one-way ratchets on the left and right sides of the V-grooved pulley for transmission.

[0005] To achieve the purpose of a continuously variable transmission with increased torque and no slipping.

[0006] The beneficial effect of the present invention is that it changes from frictional meshing to tooth meshing continuously variable transmission, increases torque without slipping, and only uses two types of axially telescopic one-way ratchets in the positive and negative directions on both sides of the transmission steel chain, with a simple structure. Brief Description of the Drawings

[0007] The present invention will be further described below in conjunction with the drawings and embodiments.

[0008] Figure 1 It is a front cross-sectional view of the axially telescopic positive one-way ratchet steel chain unit of the present invention.

[0009] Figure 2 It is a top view of the axially telescopic positive one-way ratchet steel chain unit.

[0010] Figure 3 It is a general structural schematic diagram of the pin shaft.

[0011] Figure 4 It is a top view of the axially telescopic reverse one-way ratchet steel chain unit.

[0012] Figure 5 It is a left view of the axially telescopic positive one-way ratchet steel chain unit.

[0013] Figure 6 It is a front view of the right cone disk of the V-grooved pulley and several long and short radial one-way ratchets.

[0014] Figure 7It is the right conical disk of the V-grooved pulley, and the top view of several long and short radial lines of positive unidirectional ratchets.

[0015] Figure 8 It is the left sectional view of the right conical disk of the V-grooved pulley, with several long and short radial lines of positive unidirectional ratchets.

[0016] Figure 9 It is the left sectional view of the left conical disk of the V-grooved pulley, with several long and short radial lines of reverse unidirectional ratchets.

[0017] In the figure, 1. The pin ring of the positive unidirectional ratchet steel chain unit that can axially expand and contract, 2. The positive unidirectional ratchet that can axially expand and contract, 3. The spring, 4. The end sealing covers at both ends of the unidirectional ratchet steel chain unit that can axially expand and contract, 5. The housing of the unidirectional steel chain unit that can axially expand and contract, 6. The pin shaft, 7. The reverse unidirectional ratchet that can expand and contract, 8. The fixed unidirectional ratchets with several long and short radial lines on the conical disk, 9. The fixed unidirectional ratchet on the right conical disk, 10. The fixed unidirectional ratchet on the left conical disk. Detailed implementation mode

[0018] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the drawings and embodiments.

[0019] As Figures 1 to 9 shown, for the unidirectional ratchet, then the cover plate (4) is welded to seal both ends. The reverse unidirectional ratchet (7) and the spring (3) are installed in the central hole of the retractable reverse unidirectional ratchet steel chain unit (7) in the same way, and the cover plate (4) is welded to seal. One positive unidirectional ratchet steel chain unit and one reverse unidirectional ratchet steel chain unit are arranged in this way and connected into a complete steel chain with the pin shaft (6).

[0020] The left and right conical disks of the variable-diameter driving wheel are reverse unidirectional ratchets. The left and right conical disks of the variable-diameter driven wheel are positive unidirectional ratchets. Both sides of the steel chain are positive and reverse unidirectional ratchets that can axially expand and contract, and are respectively meshed with the fixed unidirectional ratchets on the left and right conical disks of the variable-diameter driving and driven wheels at right angles to right angles. When the retractable unidirectional ratchet of the steel chain meshes with the fixed ratchet of the conical disk during diameter change, the retractable ratchet advances and retreats smoothly. The end of the short radial line unidirectional ratchet on the conical disk facing the center is a slope, so that the retractable ratchet will not be jammed when moving outwards. The steel chain has both pulling force and pushing force during transmission.

[0021] The above has introduced in detail a CVT stepless speed change device provided by the present invention. The description of the specific embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A CVT stepless transmission device mainly consists of three main components: a driving variable-diameter pulley, a driven variable-diameter pulley, and an intermediate steel chain medium. Its characteristics are as follows: There are positive and negative one-way ratchets that can axially expand and contract on both the left and right sides of the drive steel chain.

2. The continuously variable transmission driving variable diameter pulley and driven variable diameter pulley according to claim 1, characterized in that: On the left and right conical discs, there are several fixed one-way ratchets of long and short radiation lines.

3. The left and right sides of the steel chain according to claim 1 or 2 can axially expand and contract with two types of one-way ratchets in positive and negative directions. The driving variable-diameter wheel and the driven variable-diameter wheel are fixed with one-way ratchets on the left and right conical discs. It is characterized in that: The positive and negative one-way ratchets are driven by a method of right-angle to right-angle meshing.

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