A transmission device of bidirectional input and single-direction output

Abstract

The utility model discloses a kind of transmission of two-way input rotation single-way output, comprising: drive shaft, for receiving the rotation input of two directions of positive, negative;Driving wheel, by first one-way bearing is installed on drive shaft;Output wheel, by second one-way bearing is installed on drive shaft, output wheel has output connection end, the rotation direction of second one-way bearing is opposite with the one-way rotation direction of first one-way bearing;Reversing mechanism, with driving wheel, output wheel transmission connection, for the rotation of driving wheel / output wheel is reversed transmission to output wheel / driving wheel.The transmission of the utility model, drive shaft positive rotation, second one-way bearing is in locking state, driving output wheel rotation positive rotation, output wheel drives driving wheel reverse rotation by the reversing mechanism;When drive shaft reverse rotation, first one-way bearing is in locking state, driving driving wheel reverse rotation, driving wheel drives output wheel positive rotation output by reversing mechanism.

Description

Technical Field

[0001] This utility model relates to the field of transmission mechanism technology, specifically to a transmission device that converts bidirectional input to unidirectional output. Background Technology

[0002] In the field of mechanical transmission, there are many application scenarios that require converting bidirectional reciprocating rotary input into unidirectional continuous rotary output. For example, in wave energy power generation devices, manual crank-type charging devices, certain functional fitness equipment, and bidirectional torque wrenches, the driving components (such as wave-driven floats and manual cranks) will perform reciprocating motion in both directions, while the actuating components (such as generators and energy storage mechanisms) require unidirectional rotation to work efficiently and stably.

[0003] Currently, there are some technical solutions for achieving bidirectional input to unidirectional output, but most of them have certain limitations.

[0004] A common existing technology uses a ratchet-pawl mechanism. When the input shaft rotates in the forward direction, the pawl pushes the ratchet to rotate; when the input shaft rotates in the reverse direction, the pawl slides back on the back of the ratchet teeth, achieving idle stroke, thus outputting intermittent unidirectional motion. However, this solution has significant drawbacks: First, its output is intermittent and discontinuous, resulting in fluctuations in output torque and speed, poor smoothness, and high noise. Second, the pawl and ratchet teeth collide and wear during engagement, leading to decreased reliability after long-term use and requiring frequent maintenance.

[0005] Another approach involves using a structure with two one-way clutches and a gear train. Typically, the two one-way clutches are installed in opposite directions, and the two power paths are coordinated by a relatively complex gear system (such as a reversing gear train consisting of multiple idler gears). While this approach can achieve a more continuous output, its structure is often very complex, with many parts, a large footprint, and high manufacturing costs. The complex gear transmission also leads to a loss of transmission efficiency, and requires stringent machining and assembly precision; otherwise, noise and vibration are likely to occur.

[0006] Furthermore, whether it is a ratchet mechanism or a complex gear reversing system, existing technical solutions often perform poorly in terms of structural compactness and lightweighting, making it difficult to meet the needs of modern, integrated equipment with strict limitations on installation space.

[0007] Therefore, there is an urgent need in the field for a bidirectional input to unidirectional output transmission device that is compact, has smooth transmission, high efficiency and good reliability, in order to overcome the above-mentioned defects of the prior art.

[0008] In view of the above, this utility model patent is hereby proposed. Utility Model Content

[0009] To solve the above problems, this utility model provides a transmission device that converts bidirectional input to unidirectional output, specifically, the following technical solution is adopted: A transmission device for converting bidirectional input to unidirectional output, comprising: The drive shaft is used to receive rotational input in both the forward and reverse directions; The drive wheel is mounted on the drive shaft via a first one-way bearing; An output wheel is mounted on the drive shaft via a second one-way bearing. The output wheel has an output connection end. The direction of rotation of the second one-way bearing is opposite to that of the unidirectional rotation of the first one-way bearing. The reversing mechanism is connected to the driving wheel and the output wheel for reversing the rotation of the driving wheel / output wheel to the output wheel / driving wheel; The drive shaft rotates in the forward direction, and the second one-way bearing is in a locked state, driving the output wheel to rotate for forward rotation output. The output wheel drives the drive wheel to rotate in the reverse direction through the reversing mechanism. When the drive shaft rotates in the reverse direction, the first one-way bearing is locked, causing the drive wheel to rotate in the reverse direction. The drive wheel then drives the output wheel to rotate in the forward direction through the reversing mechanism.

[0010] As an optional embodiment of this utility model, the reversing mechanism includes a reversing shaft and a first reversing wheel and a second reversing wheel installed at both ends of the reversing shaft. The central axis of the reversing shaft is arranged in a different plane from the central axis of the drive shaft. The driving wheel, the output wheel, the first reversing wheel and the second reversing wheel are connected by the same conveyor belt.

[0011] As an optional embodiment of this utility model, the conveyor belt is an annular conveyor belt, with its two ends respectively fitted onto the first reversing wheel and the second reversing wheel, and the two middle sections of the annular conveyor belt respectively surrounding the driving wheel and the output wheel.

[0012] As an optional embodiment of this utility model, annular mounting grooves are provided on the outer peripheral walls of the drive wheel, output wheel, first reversing wheel and second reversing wheel, and the annular conveyor belt is wrapped around the annular mounting grooves of the first reversing wheel, drive wheel, second reversing wheel and output wheel.

[0013] As an optional embodiment of this utility model, the angle between the central axis of the reversing shaft and the central axis of the drive shaft is 90°.

[0014] As an optional embodiment of the present invention, a bidirectional input to unidirectional output transmission device of the present invention includes a housing with an internal mounting chamber. One end of the drive shaft extends into the mounting cavity inside the housing, and the other end is located outside the housing; The drive wheel is mounted on the drive shaft at one end located within the mounting cavity via the first one-way bearing; The output wheel is mounted on one end of the drive shaft located inside the mounting cavity via the second one-way bearing, and the output wheel has an output connection end extending outside the mounting cavity of the housing.

[0015] As an optional embodiment of this utility model, a first mounting port is formed on the shell wall of the housing, the first mounting port is connected to the mounting chamber, a first rolling bearing is installed in the first mounting port, and one end of the drive shaft passes through the first rolling bearing and extends into the mounting chamber.

[0016] As an optional embodiment of this utility model, a second mounting port is provided on the shell wall of the housing, the second mounting port is connected to the mounting chamber, the second mounting port and the first mounting port are arranged with the same central axis, one end of the drive shaft extending into the mounting chamber is located at the second mounting port, and the output wheel is mounted on the drive shaft near the end of the second mounting port; A second rolling bearing is installed in the second mounting port, one end of the output wheel extends out of the mounting chamber through the second rolling bearing, and the end of the output wheel extending out of the mounting chamber has the output connection end.

[0017] As an optional embodiment of this utility model, the output wheel includes an output wheel body and an output wheel cover; The output wheel body has a mounting hole inside, and the second one-way bearing is installed in the mounting hole and sleeved on the drive shaft; The output wheel body has a first wheel body section and a second wheel body section. The outer peripheral wall of the first wheel body section protrudes from the outer peripheral wall of the second wheel body section. The first wheel body section is connected to the conveyor belt for transmission. The inner ring of the second rolling bearing is sleeved on the outer peripheral wall of the second wheel body section. The output wheel cover is sealed at the free end of the second wheel body section, and the middle part of the output wheel cover has a protruding connecting shaft, which is the output connection end.

[0018] As an optional embodiment of this utility model, the reversing shaft is rotatably installed in the mounting cavity of the housing, and the first reversing wheel and the second reversing wheel are respectively fixedly installed at both ends of the reversing shaft.

[0019] By adopting the above technical solution, the technical solution of this utility model has the following technical effects compared with the prior art: This utility model provides a bidirectional input to unidirectional output transmission device. Through a clever "double unidirectional bearing + reversing mechanism," the output wheel can always maintain continuous and constant forward rotation output regardless of whether the drive shaft rotates in the forward or reverse direction. This completely solves the inherent "intermittent-impact" problem of the "ratchet mechanism" in the prior art, making the transmission process smooth and stable, greatly reducing vibration and noise, and is particularly suitable for transmission or power recovery applications with high requirements for output stability.

[0020] Therefore, the bidirectional input to unidirectional output transmission device provided by this utility model transforms bidirectional reciprocating input into continuous and stable output in a single direction. At the same time, it optimizes the compactness of the structure, transmission efficiency, working reliability and economy, and its comprehensive performance far exceeds that of the prior art.

[0021] Furthermore, the reversing mechanism of this invention, by having the central axis of the reversing shaft arranged out of plane with the central axis of the drive shaft, arranges the driving wheel and output wheel on the drive shaft, and the first reversing wheel and second reversing wheel on the reversing shaft, all wrapped by a closed conveyor belt, forming a complete transmission circuit. This design cleverly utilizes the two reversing wheels to change the winding path of the conveyor belt, thereby achieving a reversal of the transmission direction from the driving wheel to the output wheel. This "one belt, four wheels" layout eliminates complex gear meshing pairs and multiple transmission chains, realizing the reversing function with the fewest parts and the simplest structure, greatly improving the reliability of the transmission and the ease of assembly.

[0022] Meanwhile, this utility model utilizes the inherent advantages of belt drives, such as buffering, vibration absorption, and low noise. This solution incorporates these advantages throughout the entire reversing process, fundamentally avoiding the vibration, impact, and squealing caused by gear meshing compared to gear reversing. Furthermore, the manufacturing and maintenance costs of pulleys and drive belts are typically lower than those of precision gears, achieving both noise reduction and cost reduction. Attached Figure Description

[0023] Figure 1 A cross-sectional view of the overall structure of a transmission device that converts bidirectional input to unidirectional output according to an embodiment of this utility model; Figure 2 This utility model provides a three-dimensional structural diagram of a transmission device that converts bidirectional input to unidirectional output (without the housing). Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] See Figures 1-2 As shown, a bidirectional input to unidirectional output transmission device according to this embodiment includes: The drive shaft 200 is used to receive rotational input in both the forward and reverse directions; The drive wheel 300 is mounted on the drive shaft 200 via a first one-way bearing 500; The output wheel 400 is mounted on the drive shaft 200 via a second one-way bearing 600. The output wheel 400 has an output connection end 404. The direction of rotation of the second one-way bearing 600 is opposite to the one-way rotation direction of the first one-way bearing 500. The reversing mechanism is connected to the driving wheel 300 and the output wheel 400 for reversing the rotation of the driving wheel 300 / output wheel 400 to the output wheel 400 / driving wheel 300. The drive shaft 200 rotates in the forward direction, and the second one-way bearing 600 is in a locked state, driving the output wheel 400 to rotate in the forward direction for output. The output wheel 400 drives the drive wheel 300 to rotate in the reverse direction through the reversing mechanism. When the drive shaft 200 rotates in the reverse direction, the first one-way bearing 500 is in a locked state, driving the drive wheel 300 to rotate in the reverse direction. The drive wheel 300 drives the output wheel 400 to rotate in the forward direction for output through the reversing mechanism.

[0030] The bidirectional input to unidirectional output transmission device provided in this embodiment, through a clever "double unidirectional bearing + reversing mechanism," ensures that the output wheel 400 maintains continuous and constant forward rotation output regardless of whether the drive shaft 200 rotates in the forward or reverse direction. This completely solves the inherent "intermittent-impact" problem of the "ratchet mechanism" in the prior art, making the transmission process smooth and stable, greatly reducing vibration and noise, and is particularly suitable for transmission or power recovery applications with high requirements for output stability.

[0031] Therefore, the bidirectional input to unidirectional output transmission device provided in this embodiment transforms bidirectional reciprocating input into continuous and stable output in a single direction. At the same time, it optimizes the structure, transmission efficiency, operational reliability and economy, and its overall performance far exceeds that of the prior art.

[0032] The reversing mechanism of this embodiment is used to reverse the rotation of the driving wheel 300 / output wheel 400 to the output wheel 400 / driving wheel 300, and can be implemented using existing gear reversing transmission mechanisms. However, the reversing mechanism of this embodiment adopts an innovative structural design, the specific solution of which is as follows: The reversing mechanism of this embodiment includes a reversing shaft 1000 and a first reversing wheel 1100 and a second reversing wheel 1200 installed at both ends of the reversing shaft 1000. The central axis of the reversing shaft 1000 is arranged in a different plane from the central axis of the drive shaft 200. The driving wheel 300, the output wheel 400, the first reversing wheel 1100 and the second reversing wheel 1200 are connected by transmission through the same conveyor belt 900.

[0033] In this embodiment, the reversing mechanism is configured with the central axis of the reversing shaft 1000 being parallel to the central axis of the drive shaft 200. A drive wheel 300 and an output wheel 400 are arranged on the drive shaft 200, while a first reversing wheel 1100 and a second reversing wheel 1200 are arranged on the reversing shaft 1000. These are all wrapped by a closed conveyor belt 900, forming a complete transmission loop. This design cleverly utilizes the two reversing wheels to change the winding path of the conveyor belt 900, thereby reversing the transmission direction from the drive wheel 300 to the output wheel 400. This "one belt, four wheels" layout eliminates complex gear meshing pairs and multiple transmission chains, achieving the reversing function with the fewest parts and the simplest structure, greatly improving the reliability and ease of assembly of the transmission.

[0034] Furthermore, the belt drive 900 in this embodiment inherently possesses advantages such as buffering, vibration absorption, and low noise. This solution incorporates these advantages throughout the entire reversing process, fundamentally avoiding the vibration, impact, and squealing caused by gear meshing compared to gear reversing. Simultaneously, the manufacturing and maintenance costs of pulleys and drive belts are typically lower than those of precision gears, achieving the dual effects of noise reduction and cost reduction.

[0035] In summary, the reversing mechanism of this embodiment not only efficiently completes the reversing function with a minimalist structure, but also achieves a high degree of integration in three-dimensional space through the creative layout of "opposite axes", laying a core foundation for the miniaturization, lightweighting and high reliability of the entire transmission device.

[0036] Specifically, in this embodiment, the conveyor belt 900 is an annular conveyor belt. The two ends of the annular conveyor belt are respectively fitted onto the first reversing wheel 1100 and the second reversing wheel 1200, and the two middle sections of the annular conveyor belt respectively surround the driving wheel 300 and the output wheel 400.

[0037] Meanwhile, in this embodiment, annular mounting grooves are provided on the outer peripheral walls of the drive wheel 300, output wheel 400, first reversing wheel 1100 and second reversing wheel 1200, and the annular conveyor belt is wrapped around the annular mounting grooves of the first reversing wheel 1100, drive wheel 300, second reversing wheel 1200 and output wheel 400.

[0038] As an optional implementation of this embodiment, the angle between the central axis of the reversing shaft 1000 and the central axis of the drive shaft 200 is 90°. This avoids interference between the annular conveyor belt and the transmission process, thus preventing any impact on the transmission effect.

[0039] This embodiment of a bidirectional input to unidirectional output transmission device includes a housing 100 with an internal mounting chamber; one end of a drive shaft 200 extends into the mounting chamber inside the housing 100, and the other end is located outside the housing 100; a drive wheel 300 is mounted on the drive shaft 200 at one end located inside the mounting chamber via a first one-way bearing 500; an output wheel 400 is mounted on the drive shaft 200 at one end located inside the mounting chamber via a second one-way bearing 600, and the output wheel 400 has an output connection end 404 extending outside the mounting chamber of the housing 100.

[0040] Furthermore, in order to enable the drive shaft 200 to be installed in both forward and reverse rotation, a first mounting port 101 is provided on the shell wall of the housing 100 in this embodiment. The first mounting port 101 communicates with the mounting chamber. A first rolling bearing 700 is installed in the first mounting port 101, and one end of the drive shaft 200 extends into the mounting chamber through the first rolling bearing 700.

[0041] Meanwhile, in this embodiment, a second mounting port 102 is formed on the shell wall of the housing 100. The second mounting port 102 communicates with the mounting chamber. The second mounting port 102 and the first mounting port 101 are arranged along the same central axis. One end of the drive shaft 200 extending into the mounting chamber is located at the second mounting port 102. The output wheel 400 is mounted on the drive shaft 200 near one end of the second mounting port 102. A second rolling bearing 800 is installed in the second mounting port 102. One end of the output wheel 400 passes through the second rolling bearing 800 and extends out of the mounting chamber. The end of the output wheel 400 extending out of the mounting chamber has the output connection end 404.

[0042] Specifically, the output wheel 400 described in this embodiment includes an output wheel body and an output wheel cover 403.

[0043] In this embodiment, the output wheel body has a mounting hole inside, and the second one-way bearing 600 is installed in the mounting hole and sleeved on the drive shaft 200. The output wheel body has a first wheel body section 401 and a second wheel body section 402. The outer peripheral wall of the first wheel body section 401 protrudes from the outer peripheral wall of the second wheel body section 402. The first wheel body section 401 is connected to the conveyor belt 900 for transmission. The inner ring of the second rolling bearing 800 is sleeved on the outer peripheral wall of the second wheel body section 402.

[0044] In this embodiment, the output wheel cover 403 is sealed at the free end of the second wheel body section 402. The output wheel cover 403 has a protruding connecting shaft in the middle, and the connecting shaft is the output connecting end 404.

[0045] In this embodiment, the drive wheel 300 has a mounting hole inside, and the first one-way bearing 500 is installed in the mounting hole and sleeved on the drive shaft 200. The drive wheel 300 has a third wheel body segment and a fourth wheel body segment. The outer peripheral wall of the third wheel body segment protrudes from the outer peripheral wall of the fourth wheel body segment, and the third wheel body segment is connected to the conveyor belt 900 for transmission.

[0046] As an optional implementation of this embodiment, the reversing shaft 1000 is rotatably installed in the mounting cavity of the housing 100, and the first reversing wheel 1100 and the second reversing wheel 1200 are respectively fixedly installed at both ends of the reversing shaft 1000.

[0047] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A transmission device for converting bidirectional input to unidirectional output, characterized in that, include: The drive shaft is used to receive rotational input in both the forward and reverse directions; The drive wheel is mounted on the drive shaft via a first one-way bearing; An output wheel is mounted on the drive shaft via a second one-way bearing. The output wheel has an output connection end. The direction of rotation of the second one-way bearing is opposite to that of the unidirectional rotation of the first one-way bearing. The reversing mechanism is connected to the driving wheel and the output wheel for reversing the rotation of the driving wheel / output wheel to the output wheel / driving wheel; The drive shaft rotates in the forward direction, and the second one-way bearing is in a locked state, driving the output wheel to rotate for forward rotation output. The output wheel drives the drive wheel to rotate in the reverse direction through the reversing mechanism. When the drive shaft rotates in the reverse direction, the first one-way bearing is locked, causing the drive wheel to rotate in the reverse direction. The drive wheel then drives the output wheel to rotate in the forward direction through the reversing mechanism.

2. The transmission device for bidirectional input to unidirectional output according to claim 1, characterized in that, The reversing mechanism includes a reversing shaft and a first reversing wheel and a second reversing wheel installed at both ends of the reversing shaft. The central axis of the reversing shaft is arranged in a different plane from the central axis of the drive shaft. The driving wheel, the output wheel, the first reversing wheel and the second reversing wheel are connected by the same conveyor belt.

3. The transmission device for bidirectional input to unidirectional output according to claim 2, characterized in that, The conveyor belt is a ring conveyor belt, with its two ends respectively fitted onto the first reversing wheel and the second reversing wheel, and the two middle sections of the ring conveyor belt respectively surrounding the drive wheel and the output wheel.

4. The transmission device for bidirectional input to unidirectional output according to claim 3, characterized in that, The outer peripheral walls of the drive wheel, output wheel, first reversing wheel and second reversing wheel are all provided with annular mounting grooves, and the annular conveyor belt is wrapped around the annular mounting grooves of the first reversing wheel, drive wheel, second reversing wheel and output wheel.

5. A transmission device for bidirectional input to unidirectional output according to claim 2, characterized in that, The angle between the central axis of the reversing shaft and the central axis of the drive shaft is 90°.

6. The transmission device for bidirectional input to unidirectional output according to claim 2, characterized in that, Includes a housing with an internal mounting chamber; One end of the drive shaft extends into the mounting cavity inside the housing, and the other end is located outside the housing; The drive wheel is mounted on the drive shaft at one end located within the mounting cavity via the first one-way bearing; The output wheel is mounted on one end of the drive shaft located inside the mounting cavity via the second one-way bearing, and the output wheel has an output connection end extending outside the mounting cavity of the housing.

7. A transmission device for bidirectional input to unidirectional output according to claim 6, characterized in that, A first mounting opening is formed on the shell wall of the housing, the first mounting opening communicates with the mounting chamber, a first rolling bearing is installed in the first mounting opening, and one end of the drive shaft passes through the first rolling bearing and extends into the mounting chamber.

8. The transmission device for bidirectional input to unidirectional output according to claim 7, characterized in that, A second mounting port is provided on the shell wall of the housing. The second mounting port communicates with the mounting chamber. The second mounting port and the first mounting port are arranged with the same central axis. One end of the drive shaft that extends into the mounting chamber is located at the second mounting port. The output wheel is mounted on the drive shaft near the end of the second mounting port. A second rolling bearing is installed in the second mounting port, one end of the output wheel extends out of the mounting chamber through the second rolling bearing, and the end of the output wheel extending out of the mounting chamber has the output connection end.

9. A transmission device for bidirectional input to unidirectional output according to claim 8, characterized in that, The output wheel includes an output wheel body and an output wheel cover; The output wheel body has a mounting hole inside, and the second one-way bearing is installed in the mounting hole and sleeved on the drive shaft; The output wheel body has a first wheel body section and a second wheel body section. The outer peripheral wall of the first wheel body section protrudes from the outer peripheral wall of the second wheel body section. The first wheel body section is connected to the conveyor belt for transmission. The inner ring of the second rolling bearing is sleeved on the outer peripheral wall of the second wheel body section. The output wheel cover is sealed at the free end of the second wheel body section, and the middle part of the output wheel cover has a protruding connecting shaft, which is the output connection end.

10. A transmission device for bidirectional input to unidirectional output according to claim 6, characterized in that, The reversing shaft is rotatably mounted in the mounting cavity of the housing, and the first reversing wheel and the second reversing wheel are respectively fixedly mounted at both ends of the reversing shaft.

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