Bidirectional clutch structure

Abstract

The utility model provides a bidirectional clutch structure, and relates to the technical field of hubs. Through the arranged bidirectional clutch structure, the first connecting base and the second connecting base rotate reversely under transmission of the reversing transmission assembly, when the first connecting base and the flywheel body rotate forwards, the first one-way connecting piece achieves connection between the first connecting base and the first-stage clutch insert block, and the hub assembly is driven to rotate forwards; when the flywheel main body rotates reversely, the second one-way connecting piece achieves connection between the second connecting base and the second-stage clutch insert block so as to drive the hub assembly to rotate forwards, and the first connecting base and the first-stage clutch insert block do not conduct transmission. By means of the arrangement, the flywheel body can provide forward driving force for the hub assembly no matter whether the flywheel body rotates forwards or reversely, the design is of great significance to riding of a user, forward power can be effectively provided no matter pedals are pedaled forwards or reversely, and convenience is provided for riding.

Description

Technical Field

[0001] The utility model relates to the technical field of hubs, and in particular to a bidirectional clutch structure. Background Art

[0002] As an essential core component of the wheel structure, the hub not only bears the heavy responsibility of supporting the vehicle's weight and ensuring a smooth ride, but also plays a vital role in power transmission and handling response. In a wide range of vehicles, such as bicycles, the hub's performance and design are directly related to the vehicle's overall performance and user experience.

[0003] Traditional hub designs rely on a direct mechanical connection between the flywheel and the hub, or a one-way clutch mechanism to achieve effective power transmission. This design is generally adequate for basic power transmission: when the flywheel rotates forward, power is smoothly transferred to the wheels through the hub, propelling the vehicle forward. However, this one-way transmission characteristic means that when the flywheel rotates backward, the hub often loses effective driving force, making it difficult to maintain forward rotation. Therefore, we have improved this by proposing a two-way clutch structure. Summary of the Invention

[0004] The purpose of the utility model is to address the problem that the existing transmission characteristics make it difficult for the hub to continue to obtain effective driving force when the flywheel rotates in the reverse direction, thereby making it difficult to maintain the forward rotation requirement of the hub.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention provides a two-way clutch structure to improve the above-mentioned problem.

[0006] The specific application is as follows:

[0007] A two-way clutch structure includes a hub assembly and a main shaft passing through the middle of the hub assembly. A primary clutch insert and a secondary clutch insert are fixedly disposed in the hub assembly. A reversing transmission assembly is disposed on the outer surface of the main shaft and is located between the primary clutch insert and the secondary clutch insert.

[0008] The outer surface of the main shaft is connected to a first connecting seat and a second connecting seat respectively located on both sides of the reversing transmission assembly through a bearing, the first connecting seat is located in the primary clutch insert and a first one-way connecting member is provided between the first clutch insert, the second connecting seat is located in the secondary clutch insert and a second one-way connecting member is provided between the secondary clutch insert, one end of the first connecting seat extends to the outside of the hub assembly and is fixedly connected to the flywheel body; the first one-way connecting member is used to realize the connection between the first connecting seat and the primary clutch insert when the flywheel body rotates forward, so as to drive the hub assembly to rotate forward, and the second one-way connecting member is used to realize the connection between the second connecting seat and the secondary clutch insert when the flywheel body is reversed, so as to drive the hub assembly to rotate forward.

[0009] As a preferred technical solution of the present application, the reversing transmission assembly includes a secondary shaft vertically arranged in the middle of the main shaft, and both ends of the secondary shaft are rotatably connected to reversing bevel gears through bearings. The two reversing bevel gears are symmetrically arranged, and the input end bevel gear and the output end bevel gear are meshed between the two secondary shafts.

[0010] As a preferred technical solution of the present application, the input end bevel gear and the output end bevel gear are respectively located on both sides of the secondary shaft, the input end bevel gear is fixedly connected to the first connecting seat, and the output end bevel gear is fixedly connected to the second connecting seat.

[0011] As a preferred technical solution of the present application, the first connecting seat and the second connecting seat realize reverse rotation under the action of the input end bevel gear, the output end bevel gear and the counter shaft.

[0012] As a preferred technical solution of the present application, the first one-way connecting member includes a plurality of first one-way grooves opened on the inner wall of the primary clutch insert and a plurality of first pawls arranged on the outer peripheral side of the first connecting seat through spring wires.

[0013] As a preferred technical solution of the present application, the first pawl engages with the first one-way groove when the flywheel body rotates forward, so as to realize the forward rotation of the first connecting seat, the first-stage clutch insert and the hub assembly, and the first pawl separates from the first one-way groove when the flywheel body and the first connecting seat rotate reversely.

[0014] As a preferred technical solution of the present application, the second one-way connecting member includes a plurality of second one-way grooves opened on the inner wall of the secondary clutch insert and a plurality of second pawls arranged on the outer peripheral side of the second connecting seat through spring wires.

[0015] As a preferred technical solution of the present application, the second pawl is separated from the first one-way groove when the flywheel body and the first connecting seat rotate forward, and the second pawl is engaged with the second pawl when the flywheel body and the first connecting seat rotate reversely to realize the forward rotation of the hub assembly.

[0016] As a preferred technical solution of the present application, the hub assembly includes a hub body mounted on the outer surface of a first connecting seat through a bearing sleeve, the first connecting seat is connected to an end cover by bolts on a side away from the flywheel body, the primary clutch insert is fixedly connected to the inner wall of the hub body, and the secondary clutch insert is fixedly connected to the end cover.

[0017] As a preferred technical solution of the present application, a plurality of spoke connection holes are provided on the hub body, and the spoke connection holes are used for connecting wheel spokes.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the scheme of this application:

[0020] In order to solve the problem in the prior art that the transmission characteristics adopted make it difficult for the hub to continue to obtain effective driving force when the flywheel reverses, and thus it is difficult to maintain the forward rotation requirement of the hub, the present application sets up a two-way clutch structure, and the first connecting seat and the second connecting seat realize reverse rotation under the transmission of the reversing transmission assembly. When the first connecting seat and the flywheel main body rotate forward, the first one-way connecting member realizes the connection between the first connecting seat and the primary clutch block, driving the hub assembly to rotate forward, while the second connecting seat and the secondary clutch block do not transmit transmission. When the flywheel main body reverses, the second one-way connecting member realizes the connection between the second connecting seat and the secondary clutch block, driving the hub assembly to rotate forward, while the first connecting seat and the primary clutch block do not transmit transmission. This arrangement enables the flywheel main body to provide positive driving force for the hub assembly regardless of whether it rotates forward or reverse. This design is of great significance to the user's riding. Whether pedaling forward or reverse, it can effectively provide positive power, providing convenience for riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of the bidirectional clutch structure provided in this application;

[0022] Figure 2 A schematic structural diagram of a reversing assembly of a bidirectional clutch structure provided in this application;

[0023] Figure 3 A schematic structural diagram of the first one-way notch and the second one-way notch of the two-way clutch structure provided by the present application;

[0024] Figure 4 The bidirectional clutch structure provided in this application Figure 2 Schematic diagram of the top view structure.

[0025] Indicated in the figure:

[0026] 1. Hub body; 2. End cover; 3. Flywheel body; 4. Main shaft; 5. Primary clutch insert; 501. First one-way slot; 6. Secondary clutch insert; 601. Second one-way slot; 7. Input bevel gear; 8. First connecting seat; 801. First pawl; 9. Second connecting seat; 901. Second pawl; 10. Output bevel gear; 11. Countershaft; 12. Reversing bevel gear; 13. Hub assembly; 14. Reversing transmission assembly; 15. Spoke connecting hole. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] As described in the background, conventional hub designs mostly rely on a direct mechanical connection between the flywheel and the hub, or a one-way clutch mechanism to achieve effective power transmission. This design is sufficient for basic power transmission tasks in most cases. That is, when the flywheel rotates forward, power is smoothly transmitted to the wheels through the hub, propelling the vehicle forward. However, the one-way transmission characteristic means that when the flywheel rotates backward, the hub often cannot continue to obtain effective driving force, making it difficult to maintain the required forward rotation of the hub.

[0029] In order to solve this technical problem, the utility model provides a two-way clutch structure, which is applied to a bicycle.

[0030] Specifically, please refer to Figure 1-Figure 4 , the bidirectional clutch structure specifically includes:

[0031] A hub assembly 13 and a main shaft 4 passing through the middle of the hub assembly 13, wherein a primary clutch insert 5 and a secondary clutch insert 6 are fixedly disposed in the hub assembly 13, and a reversing transmission assembly 14 is disposed on the outer surface of the main shaft 4 and is located between the primary clutch insert 5 and the secondary clutch insert 6;

[0032] The outer surface of the main shaft 4 is connected to the first connecting seat 8 and the second connecting seat 9 located on both sides of the reversing transmission assembly 14 through a bearing. The first connecting seat 8 is located in the primary clutch block 5 and a first one-way connecting member is provided between the first connecting seat 8 and the primary clutch block 5. The second connecting seat 9 is located in the secondary clutch block 6 and a second one-way connecting member is provided between the secondary clutch block 6. One end of the first connecting seat 8 extends to the outside of the hub assembly 13 and is fixedly connected to the flywheel body 3; the first one-way connecting member is used to realize the connection between the first connecting seat 8 and the primary clutch block 5 when the flywheel body 3 rotates forward, so as to drive the hub assembly 13 to rotate forward, and the second one-way connecting member is used to realize the connection between the second connecting seat 9 and the secondary clutch block 6 when the flywheel body 3 reverses, so as to drive the hub assembly 13 to rotate forward.

[0033] The two-way clutch structure provided by the present invention is a two-way clutch structure set up in this application. The first connecting seat 8 and the second connecting seat 9 realize reverse rotation under the transmission of the reversing transmission assembly 14. When the first connecting seat 8 and the flywheel body 3 rotate forward, the first one-way connecting member realizes the connection between the first connecting seat 8 and the primary clutch insert 5, driving the hub assembly 13 to rotate forward, while the second connecting seat 9 and the secondary clutch insert 6 do not transmit transmission. When the flywheel body 3 is reversed, the second one-way connecting member realizes the connection between the second connecting seat 9 and the secondary clutch insert 6, driving the hub assembly 13 to rotate forward, while the first connecting seat 8 and the primary clutch insert 5 do not transmit transmission. This arrangement enables the flywheel body 3 to provide a positive driving force for the hub assembly 13 regardless of whether it rotates forward or reverse.

[0034] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0037] Example 1, please refer to Figure 1-Figure 4 , a two-way clutch structure, including a hub assembly 13 and a main shaft 4 passing through the middle of the hub assembly 13, a primary clutch insert 5 and a secondary clutch insert 6 are fixedly provided in the hub assembly 13, and a reversing transmission assembly 14 is provided on the outer surface of the main shaft 4 between the primary clutch insert 5 and the secondary clutch insert 6;

[0038] The outer surface of the main shaft 4 is connected to a first connecting seat 8 and a second connecting seat 9 located on both sides of the reversing transmission assembly 14 through bearings. The first connecting seat 8 is located in the primary clutch insert 5 and a first one-way connecting member is provided between the first connecting seat 8 and the primary clutch insert 5. The second connecting seat 9 is located in the secondary clutch insert 6 and a second one-way connecting member is provided between the second clutch insert 6. One end of the first connecting seat 8 extends to the outside of the hub assembly 13 and is fixedly connected to the flywheel body 3; the first one-way connecting member is used to connect the first connecting seat 8 with the primary clutch insert 5 when the flywheel body 3 rotates forward, thereby driving the hub assembly 13 to rotate forward; the second one-way connecting member is used to connect the second connecting seat 9 with the secondary clutch insert 6 when the flywheel body 3 rotates reversely, thereby driving the hub assembly 13 to rotate forward; this arrangement enables the flywheel body 3 to provide positive driving force for the hub assembly 13 regardless of whether it is rotating forward or reverse. This design is of great significance to the user's riding. Whether pedaling in the forward or reverse direction, it can effectively provide positive power, providing convenience for riding.

[0039] Further, such as Figure 3-Figure 4 As shown, the reversing transmission assembly 14 includes a countershaft 11 vertically arranged in the middle of the main shaft 4, and both ends of the countershaft 11 are rotatably connected to the reversing bevel gears 12 through bearings. The two reversing bevel gears 12 are symmetrically arranged, and the input end bevel gear 7 and the output end bevel gear 10 are meshed between the two countershafts 11. The reversing bevel gears 12 can be supported by the countershaft 11, and the input end bevel gear 7 and the output end bevel gear 10 realize opposite rotation directions under the transmission of the reversing bevel gear 12.

[0040] Further, such as Figure 4 As shown, the input end bevel gear 7 and the output end bevel gear 10 are respectively located on both sides of the countershaft 11, the input end bevel gear 7 is fixedly connected to the first connecting seat 8, and the output end bevel gear 10 is fixedly connected to the second connecting seat 9, so that the first connecting seat 8 and the input end bevel gear 7 can rotate synchronously, and the output end bevel gear 10 and the second connecting seat 9 can rotate synchronously.

[0041] Furthermore, the first connecting seat 8 and the second connecting seat 9 rotate in opposite directions under the action of the input-end bevel gear 7 , the output-end bevel gear 10 and the countershaft 11 .

[0042] Example 2 further optimizes the bidirectional clutch structure provided in Example 1. Specifically, Figure 2 and Figure 3 As shown, the first one-way connecting member includes a plurality of first one-way grooves 501 opened on the inner wall of the primary clutch insert 5 and a plurality of first pawls 801 arranged on the outer peripheral side of the first connecting seat 8 through spring wires. A groove for accommodating and limiting the first pawls 801 is provided on the outer surface of the first connecting seat 8.

[0043] Furthermore, the first pawl 801 engages with the first one-way groove 501 when the flywheel body 3 rotates forward, so as to realize the forward rotation of the first connecting seat 8, the primary clutch insert 5 and the hub assembly 13. The first pawl 801 separates from the first one-way groove 501 when the flywheel body 3 and the first connecting seat 8 rotate reversely, so as to realize the one-way transmission between the first connecting seat 8 and the primary clutch insert 5.

[0044] Further, such as Figure 2 and Figure 3 As shown, the second one-way connecting member includes a plurality of second one-way grooves 601 opened on the inner wall of the secondary clutch block 6 and a plurality of second pawls 901 arranged on the outer peripheral side of the second connecting seat 9 through spring wires. A groove for accommodating and limiting the second pawls 901 is provided on the outer surface of the second connecting seat 9.

[0045] Furthermore, the second pawl 901 is separated from the first one-way groove 501 when the flywheel body 3 and the first connecting seat 8 rotate forward, and the second pawl 901 is engaged with the second pawl 901 when the flywheel body 3 and the first connecting seat 8 rotate reversely to achieve forward rotation of the hub assembly 13.

[0046] Example 3 further optimizes the bidirectional clutch structure provided in Example 1 or 2. Specifically, Figure 1 As shown, the hub assembly 13 includes a hub body 1 mounted on the outer surface of a first connecting seat 8 through a bearing sleeve, the first connecting seat 8 is connected to an end cover 2 by bolts on a side away from the flywheel body 3, the primary clutch insert 5 is fixedly connected to the inner wall of the hub body 1, and the secondary clutch insert 6 is fixedly connected to the end cover 2.

[0047] Further, such as Figure 1 As shown, the hub body 1 is provided with a plurality of spoke connection holes 15 , which are used for connecting wheel spokes.

[0048] The use process of the bidirectional clutch structure provided by the utility model is as follows:

[0049] When the flywheel body 3 rotates forward, the flywheel body 3 drives the first connecting seat 8 to rotate forward. At this time, the first pawl 801 engages with the first one-way slot 501, so that the primary clutch block 5 follows the first connecting seat 8 to rotate forward, and then the primary clutch block 5 drives the hub body 1 to rotate forward. At the same time, the first connecting seat 8 drives the output end bevel gear 10 to rotate in the opposite direction through the input end bevel gear 7 and the reversing bevel gear 12. During the reverse rotation of the output end bevel gear 10, the second pawl 901 cannot engage with the second one-way slot 601 to transmit the power.

[0050] When the flywheel body 3 rotates in the opposite direction, the flywheel body 3 drives the first connecting seat 8 to rotate in the opposite direction. At this time, the first pawl 801 and the first one-way groove 501 cannot engage and transmit. At the same time, the first connecting seat 8 drives the output end bevel gear 10 to rotate forward through the input end bevel gear 7 and the reversing bevel gear 12. During the forward rotation of the output end bevel gear 10, the second pawl 901 engages and transmits with the second one-way groove 601, so that the second one-way groove 601 drives the hub body 1 to rotate forward through the end cover 2.

[0051] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0052] Obviously, the embodiments described above are only some of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of protection of the patent of the present invention.

Claims

1. Bidirectional clutch structure, characterized in that: It comprises a hub assembly (13) and a main shaft (4) passing through the middle of the hub assembly (13), wherein a primary clutch insert (5) and a secondary clutch insert (6) are fixedly arranged in the hub assembly (13), and a reversing transmission assembly (14) located between the primary clutch insert (5) and the secondary clutch insert (6) is arranged on the outer surface of the main shaft (4); The outer surface of the main shaft (4) is connected to a first connecting seat (8) and a second connecting seat (9) respectively located on both sides of the reversing transmission assembly (14) through a bearing, the first connecting seat (8) is located in the primary clutch insert (5) and a first one-way connecting member is provided between the first connecting seat (8) and the primary clutch insert (5), the second connecting seat (9) is located in the secondary clutch insert (6) and a second one-way connecting member is provided between the second clutch insert (6), one end of the first connecting seat (8) extends to the outside of the hub assembly (13) and is fixedly connected to the flywheel body (3); the first one-way connecting member is used to realize the connection between the first connecting seat (8) and the primary clutch insert (5) when the flywheel body (3) rotates forward, so as to drive the hub assembly (13) to rotate forward, and the second one-way connecting member is used to realize the connection between the second connecting seat (9) and the secondary clutch insert (6) when the flywheel body (3) rotates reversely, so as to drive the hub assembly (13) to rotate forward.

2. The two-way clutch structure according to claim 1, characterized in that: The reversing transmission assembly (14) includes a secondary shaft (11) vertically arranged in the middle of the main shaft (4), both ends of the secondary shaft (11) are rotatably connected to reversing bevel gears (12) through bearings, the two reversing bevel gears (12) are symmetrically arranged, and an input end bevel gear (7) and an output end bevel gear (10) are meshed between the two secondary shafts (11).

3. The two-way clutch structure according to claim 2, characterized in that: The input end bevel gear (7) and the output end bevel gear (10) are respectively located on both sides of the secondary shaft (11); the input end bevel gear (7) is fixedly connected to the first connecting seat (8); and the output end bevel gear (10) is fixedly connected to the second connecting seat (9).

4. The two-way clutch structure according to claim 3, characterized in that: The first connecting seat (8) and the second connecting seat (9) rotate in opposite directions under the action of the input end bevel gear (7), the output end bevel gear (10) and the countershaft (11).

5. The two-way clutch structure according to claim 4, characterized in that: The first one-way connecting member comprises a plurality of first one-way slots (501) formed on the inner wall of the primary clutch insert (5) and a plurality of first pawls (801) formed on the outer peripheral side of the first connecting seat (8) via spring wires.

6. The two-way clutch structure according to claim 5, characterized in that: The first pawl (801) is engaged with the first one-way slot (501) when the flywheel body (3) rotates forward, thereby realizing forward rotation of the first connecting seat (8), the primary clutch insert (5) and the hub assembly (13); and the first pawl (801) is separated from the first one-way slot (501) when the flywheel body (3) and the first connecting seat (8) rotate reversely.

7. The two-way clutch structure according to claim 4, characterized in that: The second one-way connecting member comprises a plurality of second one-way slots (601) formed on the inner wall of the secondary clutch insert (6) and a plurality of second pawls (901) formed on the outer peripheral side of the second connecting seat (9) via spring wires.

8. The two-way clutch structure according to claim 7, characterized in that: The second pawl (901) is separated from the first one-way slot (501) when the flywheel body (3) and the first connecting seat (8) rotate forward, and the second pawl (901) is engaged with the second pawl (901) when the flywheel body (3) and the first connecting seat (8) rotate reversely to achieve forward rotation of the hub assembly (13).

9. The two-way clutch structure according to claim 1, characterized in that: The hub assembly (13) comprises a hub body (1) mounted on the outer surface of a first connecting seat (8) via a bearing sleeve, the first connecting seat (8) having a side away from the flywheel body (3) connected to an end cover (2) via bolts, the primary clutch insert (5) being fixedly connected to the inner wall of the hub body (1), and the secondary clutch insert (6) being fixedly connected to the end cover (2).

10. The two-way clutch structure according to claim 9, characterized in that: The hub body (1) is provided with a plurality of spoke connection holes (15), and the spoke connection holes (15) are used for connecting wheel spokes.

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