tensioning mechanism

Abstract

The application provides a tensioning mechanism. The tensioning mechanism comprises a base plate, an adapter plate, a first pulley, a second pulley and a flexible transmission member. The first pulley is rotatably mounted on the adapter plate. The second pulley is rotatably mounted on the base plate. The flexible transmission member is arranged around the outer circumferential walls of the first pulley and the second pulley. The adapter plate is movably mounted on the base plate and is configured to adjust the distance between the first pulley and the second pulley so that the flexible transmission member is tensioned when the first pulley moves away from the second pulley. The application can adjust the tightness of the flexible transmission member at any time, ensure smooth transmission and improve transmission efficiency.

Description

Technical Field

[0001] This application relates to the field of tensioning technology, and more specifically, to a tensioning mechanism. Background Technology

[0002] Belt drives are a type of mechanical transmission consisting of one or more belts tightly wound around two pulleys. They transmit motion and power through the friction between the belts and the pulleys. Due to the inherent elasticity and durability of the belts, they gradually stretch and loosen over time, leading to a decrease in the mechanical efficiency of the belt drive. Therefore, the belt tension needs to be adjusted regularly to ensure the smooth operation of the belt drive. Utility Model Content

[0003] This application addresses the shortcomings of existing methods by proposing a tensioning mechanism to solve the technical problem in related technologies where belts are prone to loosening, leading to reduced efficiency.

[0004] This application provides a tensioning mechanism, including: a base plate, an adapter plate, a first pulley, a second pulley, and a flexible transmission component; The first pulley is rotatably mounted on the adapter plate; The second pulley is rotatably mounted on the base plate; The flexible transmission component is wound around the outer peripheral wall of the first pulley and the second pulley; The adapter plate is movably mounted on the base plate and is configured to adjust the distance between the first pulley and the second pulley, such that the flexible transmission element is tensioned when the first pulley moves away from the second pulley.

[0005] Optionally, the first pulley is rotatably disposed relative to the adapter plate about a first axis; The adapter plate is rotatably disposed relative to the substrate around the second axis; there is a gap between the first axis and the second axis, and the movement trajectory of the first axis is a circle or arc centered on the second axis.

[0006] Optionally, the tensioning mechanism may also include a limiting structure; The limiting structure is connected to the substrate and cooperates with the adapter plate, and is configured to restrict the adapter plate from rotating about the second axis.

[0007] Optionally, the limiting structure includes: At least one limiting groove is provided on the adapter plate with the second axis as the center line and around the second axis; A limiting component is provided in at least one limiting groove; One end of the limiting member passes through the corresponding limiting groove and is connected to the substrate, and is configured to restrict the adapter plate from rotating along the limiting groove.

[0008] Optionally, the limiting element includes: The rod has threads on the outer peripheral wall of the first end; The cap is fixed to the second end of the rod and is located on the side of the adapter plate away from the base plate; the radial dimension of the cap is larger than the radial dimension of the limiting groove. The substrate has a threaded hole, and the first end of the rod passes through the corresponding limiting groove and is threaded to the substrate. The limiting member has: a fixed position for fixing the adapter plate against the base plate by pressing the cap against the base plate; and a limiting position for releasing the cap from the adapter plate so that the adapter plate can rotate along the limiting groove.

[0009] Optionally, the number of limiting slots and limiting components may be multiple, and they may be configured in a one-to-one correspondence; and / or, The limiting components include screws.

[0010] Optionally, the tensioning mechanism may also include a drive unit; The drive unit is fixedly mounted on the adapter plate; The drive unit is connected to the first pulley and is configured to drive the first pulley to rotate around the first axis.

[0011] Optionally, the tensioning mechanism may also include a locking structure; The locking structure is connected to the substrate and mates with or connects to the adapter plate, and is configured to lock the adapter plate in the target position.

[0012] Optionally, the locking structure includes: Installation Department; Fasteners are configured to securely mount the mounting portion onto the base plate; The pressure plate is fixedly connected to the mounting part and is located on the side of the adapter plate away from the substrate. It is configured to press the adapter plate onto the substrate when the mounting part is fixedly mounted on the substrate.

[0013] Optionally, the number of locking structures is at least two; At least two locking structures are arranged around the periphery of the adapter plate along its circumference.

[0014] Optionally, the tensioning mechanism may also include a rotation-resistant structure; At least a portion of the anti-rotation structure is rotatably disposed relative to the substrate. The anti-rotation structure cooperates with the adapter plate and is configured to prevent the adapter plate from rotating in the direction that brings the first pulley closer to the second pulley, so as to lock the flexible transmission member in a tensioned state.

[0015] Optionally, the anti-rotation structure includes a ratchet, a pawl, and an elastic element; the ratchet is fixedly connected to the adapter plate, and the pawl is rotatably mounted on the base plate; the elastic element is mounted on the base plate and engages or connects with the pawl, configured to apply a force to the pawl to engage with the ratchet teeth, thereby preventing the ratchet from rotating in the opposite direction; or... The resistive structure includes a one-way bearing or a one-way clutch, and the adapter plate is rotatably connected to the base plate in one direction via the one-way bearing or one-way clutch.

[0016] The beneficial technical effects of the technical solutions provided in this application include: Both the first pulley and the second pulley are rotatably arranged. A flexible transmission component is wrapped around the outer peripheral wall of the first pulley and the second pulley. The movement and power transmission between the first pulley and the second pulley can be realized through the flexible transmission component.

[0017] The first pulley is mounted on the adapter plate, and the second pulley is mounted on the base plate. The adapter plate is mounted on the base plate and is movably disposed. The adapter plate can drive the first pulley to move relative to the base plate, so that the first pulley gradually moves away from or closer to the second pulley, thereby adjusting the distance between the first pulley and the second pulley.

[0018] In this embodiment, by driving the adapter plate to move relative to the base plate, the first pulley can be driven to gradually move away from or closer to the second pulley, thereby gradually increasing or decreasing the distance between the first and second pulleys. This achieves the adjustment of the distance between the first and second pulleys, which can gradually tighten or loosen the flexible transmission component. This allows for real-time adjustment of the tightness of the flexible transmission component, ensuring that it is always tightly fitted onto the first and second pulleys. This guarantees the effective transmission of motion and power, smooth transmission, and improved mechanical efficiency.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 A schematic diagram of a specific example of a tensioning mechanism provided in this application embodiment; Figure 2 for Figure 1 A top view of a tensioning mechanism; Figure 3 for Figure 2 A cross-sectional view of a tensioning mechanism along the AA direction; Figure 4 A schematic diagram of another specific example of a tensioning mechanism provided in this application embodiment; Figure 5 for Figure 4 A top view of a tensioning mechanism; Figure 6 for Figure 5 A cross-sectional view of a tensioned structure along the BB direction; Figure 7 This is a partial structural schematic diagram of another specific example of a tensioning mechanism provided in the embodiments of this application.

[0021] Figure label: 100 - Tensioning mechanism; 10-Substrate; 11-Threaded hole; 12-First through hole; 13-Third through hole; 20 - Adapter plate; 21 - Second through hole; 30 - First pulley; 40 - Second pulley; 50 - Flexible transmission components; 60 - Limiting structure; 61 - Limiting groove; 62 - Limiting component; 621 - Rod; 622 - Cap; 70 - Drive unit; 71 - Assembly parts; 80 - Locking structure; 81 - Mounting part; 82 - Fastener; 83 - Pressure plate part; 90 - Rotation arrestor structure; 91 - Pawl; 92 - Elastic element; L1 - First axis; L2 - Second axis; L3 - Third axis; d - Spacing. Detailed Implementation

[0022] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0023] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in the specification of this application means the presence of the stated features, integers, operations, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0025] The tensioning mechanism provided in this application is intended to solve the aforementioned technical problems in related technologies.

[0026] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. It should be noted that the following embodiments can be referenced, borrowed, or combined with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be described again.

[0027] This application provides a tensioning mechanism 100, the structural schematic diagram of which is shown below. Figures 1 to 6 As shown, it includes: a base plate 10, an adapter plate 20, a first pulley 30, a second pulley 40, and a flexible transmission component 50.

[0028] The first pulley 30 is rotatably mounted on the adapter plate 20. The second pulley 40 is rotatably mounted on the base plate 10. The flexible transmission member 50 is wound around the outer peripheral wall of the first pulley 30 and the second pulley 40.

[0029] The adapter plate 20 is movably mounted on the base plate 10 and is configured to adjust the distance between the first pulley 30 and the second pulley 40 such that the flexible transmission member 50 is tensioned when the first pulley 30 moves away from the second pulley 40.

[0030] In this embodiment, the substrate 10 is used to support the adapter plate 20, the first pulley 30, the second pulley 40, and the flexible transmission member 50.

[0031] The first pulley 30 and the second pulley 40 are rotatably arranged. The flexible transmission member 50 is arranged around the outer peripheral wall of the first pulley 30 and the second pulley 40. The movement and power transmission between the first pulley 30 and the second pulley 40 can be realized through the flexible transmission member 50.

[0032] The first pulley 30 is mounted on the adapter plate 20, and the second pulley 40 is mounted on the base plate 10. The adapter plate 20 is mounted on the base plate 10 and is movably disposed. The adapter plate 20 can drive the first pulley 30 to move together with the base plate 10, so that the first pulley 30 gradually moves away from or gradually moves closer to the second pulley 40, thereby adjusting the distance between the first pulley 30 and the second pulley 40.

[0033] As the first pulley 30 gradually moves away from the second pulley 40 under the drive of the rotating adapter plate 20, the distance between the first pulley 30 and the second pulley 40 gradually increases. The flexible transmission member 50, which is wrapped around the outer peripheral wall of the first pulley 30 and the second pulley 40, is gradually tensioned, so that the flexible transmission member 50 is tightly fitted on the first pulley 30 and the second pulley 40. Thus, the tensioned flexible transmission member 50 enables effective movement and power transmission between the first pulley 30 and the second pulley 40, ensuring smooth transmission and improving the mechanical efficiency of the transmission.

[0034] As the first pulley 30 gradually approaches the second pulley 40 under the drive of the rotating adapter plate 20, the distance between the first pulley 30 and the second pulley 40 gradually decreases, and the flexible transmission component 50 wrapped around the outer peripheral wall of the first pulley 30 and the second pulley 40 gradually loosens. According to the actual situation and needs (for example, when assembling the first pulley 30, the second pulley 40 and the flexible transmission component 50, a preload is applied to the flexible transmission component 50 to avoid the flexible transmission component 50 being too tight, which would increase the friction between the flexible transmission component 50 and the first pulley 30, or between the flexible transmission component 50 and the second pulley 40, reduce the transmission efficiency and make the operation weak), the user can drive the adapter plate 20 to move the first pulley 30 closer to the second pulley 40, and gradually loosen the flexible transmission component 50 so that the flexible transmission component 50 obtains an appropriate preload (ensuring that the flexible transmission component 50 is not too tight) and is tightly fitted on the first pulley 30 and the second pulley 40, so as to realize effective movement and power transmission between the first pulley 30 and the second pulley 40, ensure smooth transmission, and improve the mechanical efficiency of transmission.

[0035] In this embodiment, by driving the adapter plate 20 to move relative to the base plate 10, the first pulley 30 can be driven to gradually move away from or gradually move closer to the second pulley 40, so that the distance between the first pulley 30 and the second pulley 40 gradually increases or decreases, thereby achieving the adjustment of the distance between the first pulley 30 and the second pulley 40. This allows the flexible transmission member 50 to be gradually tightened or gradually loosened, enabling the tightness of the flexible transmission member 50 to be adjusted at any time, so that the flexible transmission member 50 can always be tightly fitted on the first pulley 30 and the second pulley 40, thereby ensuring the effective transmission of motion and power, smooth transmission, and improving the mechanical efficiency of the transmission.

[0036] It should be noted that, in the embodiments of this application, the movement mode of "the adapter plate 20 being movably mounted on the base plate 10" includes one or a combination of several of the movement modes such as rotation, swinging, moving or sliding, and rolling. As long as the adapter plate 20 can drive the first pulley 30 to gradually move away from the second pulley 40 (so that the distance between the first pulley 30 and the second pulley 40 gradually increases to tension the flexible transmission member 50) or gradually move closer to the second pulley 40 (so that the distance between the first pulley 30 and the second pulley 40 gradually decreases to loosen the flexible transmission member 50), it is acceptable.

[0037] Optionally, in the embodiments of this application, the flexible transmission component 50 includes, but is not limited to, belts (e.g., flat belts, synchronous belts, V-belts, etc.), chains, or ropes.

[0038] Optionally, such as Figures 1 to 6As shown in the embodiment of this application, the first pulley 30 is rotatably disposed relative to the adapter plate 20 about a first axis L1. The adapter plate 20 is rotatably disposed relative to the base plate 10 about a second axis L2. There is a distance d between the first axis L1 and the second axis L2, and the movement trajectory of the first axis L1 is a circle or arc centered on the second axis L2.

[0039] In this embodiment, the first pulley 30 is rotatably disposed relative to the adapter plate 20 and the axis of rotation is the first axis L1. The adapter plate 20 is rotatably disposed relative to the substrate 10 and the axis of rotation is the second axis L2. There is a distance d between the first axis L1 and the second axis L2. When the adapter plate 20 rotates relative to the substrate 10 around the second axis L2, the adapter plate 20 drives the first pulley 30 to rotate together around the second axis L2. The axis of rotation of the first pulley 30 (i.e. the first axis L1) revolves around the second axis L2. The trajectory of the first axis L1 is a circle or arc with the second axis L2 as the center.

[0040] In this embodiment, the adapter plate 20 rotates relative to the base plate 10 around the second axis L2, which enables the first pulley 30 to move along a circle or arc in the motion trajectory of the first axis L1, thereby causing the first pulley 30 to gradually move away from or gradually move closer to the second pulley 40, and gradually increasing or decreasing the distance between the first pulley 30 and the second pulley 40, thereby achieving the function of adjusting the distance between the first pulley 30 and the second pulley 40, as well as adjusting the tightness of the flexible transmission member 50.

[0041] Optionally, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown in the embodiment of this application, the second pulley 40 is rotatably disposed relative to the substrate 10 about a third axis L3. The axis of rotation of the second pulley 40 is the third axis L3. The first pulley 30 rotates about a first axis L1, and the second pulley 40 rotates about a third axis L3.

[0042] Optionally, such as Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown in the embodiment of this application, the rotation axis of the first pulley 30 (i.e., the first axis L1) rotates around the second axis L2 with the rotation axis of the adapter plate 20 (i.e., the second axis L2) as the rotation center.

[0043] When the first axis L1 is projected onto the substrate 10 or intersects the substrate 10 at the point where it intersects the substrate 10 (hereinafter referred to as the first intersection point), and the second axis L2 is projected onto the substrate 10 or intersects the substrate 10 at the point where it intersects the substrate 10 (hereinafter referred to as the second intersection point), and the rotation axis of the second pulley 40 (i.e., the third axis L3) is projected onto the substrate 10 or intersects the substrate 10 at the point where it intersects the substrate 10 (hereinafter referred to as the third intersection point), and is located between the second intersection point and the third intersection point, the distance between the first intersection point and the third intersection point is the shortest, that is, the first pulley 30 and the second pulley 40 have the shortest distance. At this time, the first pulley 30 is in the closest position (or reference position).

[0044] When the first intersection point is on the extension of the line connecting the second and third intersection points, and is located on the side of the second intersection point away from the third intersection point, the distance between the first and third intersection points is the longest, that is, the first pulley 30 and the second pulley 40 have the longest distance, and the first pulley 30 is at the farthest position.

[0045] It should be noted that, in the embodiments of this application, the distance d between the first axis L1 and the second axis L2 refers to the distance d between the first intersection point and the second intersection point.

[0046] It should be noted that the distance between the first pulley 30 and the second pulley 40 refers to the distance between the rotation axis of the first pulley 30 (i.e., the first axis L1) and the rotation axis of the second pulley 40 (i.e., the third axis L3), which is also the distance between the first intersection point and the third intersection point.

[0047] In this embodiment, since the distance between the first intersection point and the second intersection point is a spacing d, the distance between the closest and furthest positions of the first pulley 30 is 2d, which is twice the distance between the first intersection point and the second intersection point. By driving the first pulley 30 to revolve around the second axis L2, the maximum tension that can be achieved on the flexible transmission member 50 is 2d.

[0048] Optionally, in this embodiment of the application, the specific value of the spacing d can be designed and adjusted according to the actual situation and actual needs, thereby adjusting the maximum tension of the flexible transmission member 50 that the tensioning mechanism 100 can achieve, and improving adaptability and flexibility.

[0049] Optionally, such as Figure 2 and Figure 5 As shown in the embodiment of this application, when the tensioning mechanism 100 is assembled, the first pulley 30 has an initial position in which the flexible transmission member 50 is tightly fitted onto the first pulley 30 and the second pulley 40.

[0050] This initial position can be the closest position. In tension mode (i.e., when the flexible transmission component 50 becomes loose and needs to be tensioned), the drive adapter plate 20 moves the first pulley 30 from this initial position towards the furthest position, gradually tensioning the flexible transmission component 50. Since the initial position of the first pulley 30 is the closest position, as long as the adapter plate 20 moves the first pulley 30, the first pulley 30 will move towards the furthest position; that is, the movement of the first pulley 30 is always in a direction away from the second pulley 40, and the distance between the first pulley 30 and the second pulley 40 tends to increase. At this time, the movement of the first pulley 30 can achieve the maximum tension 2d of the flexible transmission component 50.

[0051] Of course, the initial position can also be any position between the nearest and farthest positions (excluding the farthest position). In this case, in the tensioning mode, the drive adapter plate 20 drives the first pulley 30 to move from the initial position to the direction of the farthest position, which can gradually tension the flexible transmission member 50; it can also be driven to move the first pulley 30 from the initial position to the direction of the nearest position according to the actual situation and actual needs, so as to loosen the flexible transmission member 50.

[0052] In this embodiment, depending on the tightness of the flexible transmission member 50 or the amount of tension required, the adapter plate 20 and the first pulley 30 can be stopped at any position between the initial position and the farthest position (excluding the initial position, but including the farthest position).

[0053] Optionally, such as Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown in the embodiment of this application, the tensioning mechanism further includes a drive unit 70. The drive unit 70 is fixedly mounted on the adapter plate 20. The drive unit 70 is connected to the first pulley 30 and is configured to drive the first pulley 30 to rotate around the first axis L1.

[0054] In this embodiment, the adapter plate 20 supports the drive unit 70, which in turn supports the first pulley 30 and drives it to rotate around the first axis L1, making the first pulley 30 the driving pulley. The drive unit 70 provides power to make the first pulley 30 rotate around the first axis L1. The first pulley 30 drives the second pulley 40 to rotate around the third axis L3 via the flexible transmission member 50, thus transmitting motion and power. The second pulley 40 serves as the driven pulley.

[0055] Optionally, in this embodiment, the drive unit 70 includes, but is not limited to, a motor. The output shaft of the motor is fixedly connected to the first pulley 30.

[0056] Optionally, such as Figures 1 to 7As shown in the embodiment of this application, the tensioning mechanism further includes a mounting part 71, and the drive unit 70 is fixedly mounted on the adapter plate 20 through the mounting part 71.

[0057] Optionally, in this embodiment, the assembly 71 includes a screw, the adapter plate 20 has a first mounting hole (not shown), and the drive unit 70 has a second mounting hole (not shown). The inner wall of the second mounting hole has an internal thread that matches the external thread of the screw. After the screw passes through the first mounting hole, it is threaded into the second mounting hole, thus fixing the drive unit 70 and the adapter plate 20 together.

[0058] Of course, in other optional embodiments of this application, the inner wall of the first mounting hole may be provided with an internal thread that matches the external thread of the screw, and the screw may be threaded into the first mounting hole after passing through the second mounting hole; or, the inner walls of the first mounting hole and the second mounting hole may be provided with internal threads that match the external thread of the screw, and the screw may be threaded into the first mounting hole and the second mounting hole respectively; or, the assembly 71 may include a screw and a nut that is threaded to the screw, and the screw may be threaded into the nut after passing through the first mounting hole and the second mounting hole, thereby fixing the drive part 70 and the adapter plate 20 together. In this case, the first mounting hole and the second mounting hole may each be a smooth hole or a threaded hole.

[0059] Optionally, such as Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown in this embodiment, the drive unit 70 is located on the side of the adapter plate 20 away from the first pulley 30. This arrangement simplifies the structure on the side where the first pulley 30 is located, allows for a reasonable arrangement of the drive unit 70 and the first pulley 30, and avoids interference. The base plate 10 has a first through hole 12 through which the drive unit 70 passes and connects to the adapter plate 20. The first through hole 12 is used to avoid the drive unit 70. The adapter plate 20 has a second through hole 21 through which the output shaft of the drive unit 70 passes and connects to the first pulley 30, or the shaft of the first pulley 30 passes through the second through hole 21 and connects to the drive unit 70. The second through hole 21 is used to avoid the output shaft of the drive unit 70 or the shaft of the first pulley 30.

[0060] Optionally, such as Figure 3 and Figure 6 As shown in the embodiment of this application, the substrate 10 is provided with a third through hole 13, and the shaft of the second pulley 40 passes through the third through hole 13.

[0061] Of course, in other optional embodiments of this application, the drive unit 70 can be fixedly mounted on the substrate 10 and connected to the second pulley 40 to drive the second pulley 40 to rotate around the third axis L3, depending on actual needs. In this case, the second pulley 40 acts as the driving pulley, driving the first pulley 30 to rotate through the flexible transmission member 50, and the first pulley 30 acts as the driven pulley. Optionally, the drive unit 70 can be disposed on the side of the substrate 10 opposite to the second pulley 40.

[0062] Optionally, such as Figures 1 to 7 As shown in the embodiment of this application, the tensioning mechanism further includes a limiting structure 60. The limiting structure 60 is connected to the base plate 10 and cooperates with the adapter plate 20, and is configured to restrict the adapter plate 20 from rotating about the second axis L2.

[0063] In this embodiment, the substrate 10 carries a limiting structure 60, which is mounted on the substrate 10 and cooperates with the adapter plate 20. The limiting structure 60 is used to restrict the adapter plate 20 from rotating relative to the substrate 10 around the second axis L2, thereby ensuring that the first pulley 30 and the first axis L1 rotate relative to the substrate 10 with the second axis L2 as the rotation center under the drive of the adapter plate 20.

[0064] Optionally, such as Figures 1 to 7 As shown in the embodiment of this application, the limiting structure 60 includes at least one limiting groove 61 and a limiting member 62. At least one limiting groove 61 is disposed on the adapter plate 20 with the second axis L2 as its center line. A limiting member 62 is correspondingly disposed in at least one limiting groove 61. One end of the limiting member 62 passes through the corresponding limiting groove 61 and connects to the substrate 10, and is configured to restrict the adapter plate 20 from rotating along the limiting groove 61.

[0065] In this embodiment, the limiting member 62 passes through the limiting groove 61, and the limiting groove 61 and the limiting member 62 can move relative to each other along the extending direction of the limiting groove 61. Since the limiting member 62 is fixedly mounted on the substrate 10, and the limiting groove 61 is disposed on the adapter plate 20 with the second axis L2 as its center line, the limiting member 62 can drive the adapter plate 20 to rotate along the extending direction of the limiting groove 61 and around the center line of the limiting groove 61 (i.e., the second axis L2). The cooperation between the limiting groove 61 and the limiting member 62 can ensure that the adapter plate 20 rotates around the second axis L2, prevent deviation, and control the amount of rotation or the rotation angle of the adapter plate 20 within the length of the limiting groove 61 along its extending direction or within the range of the corresponding central angle of the limiting groove 61.

[0066] Optionally, such as Figure 3 and Figure 6As shown in the embodiment of this application, the limiting member 62 includes a rod portion 621 and a cap portion 622. The outer peripheral wall of the first end of the rod portion 621 is provided with threads. The cap portion 622 is fixedly connected to the second end of the rod portion 621 and is located on the side of the adapter plate 20 away from the base plate 10; the radial dimension of the cap portion 622 is larger than the radial dimension of the limiting groove 61.

[0067] The substrate 10 is provided with a threaded hole 11, and the first end of the rod 621 passes through the corresponding limiting groove 61 and is threadedly connected to the substrate 10. The limiting member 62 has the following functions: to fix the adapter plate 20 against the substrate 10 by the cap 622 to fix the fixed position of the adapter plate 20; and to limit the position by releasing the cap 622 from the adapter plate 20 so that the adapter plate 20 can rotate along the limiting groove 61.

[0068] In this embodiment, the rod portion 621 of the limiting member 62 passes through the limiting groove 61. The first end of the rod portion 621 can be threadedly connected to the threaded hole 11 on the substrate 10 to mount the rod portion 621 onto the substrate 10. The cap portion 622 of the limiting member 62 is fixedly connected to the second end of the rod portion 621. The cap portion 622 is located on the side of the adapter plate 20 away from the substrate 10 and its radial dimension is larger than the radial dimension of the limiting groove 61, so that the cap portion 622 cannot pass through the limiting groove 61.

[0069] Thus, when it is necessary to lock the adapter plate 20 in the target position, the limiting member 62 can be screwed on, so that the rod 621 and the base plate 10 are threadedly connected (the first end of the rod 621 moves into the threaded hole 11), and the cap 622 presses the adapter plate 20 against the base plate 10, thereby fixing the relative position of the adapter plate 20 and the base plate 10, and the limiting member 62 is in a fixed position. At this time, in the transmission mode, the first pulley 30 can be driven to rotate, and the second pulley 40 can be driven to rotate through the tensioned flexible transmission member 50 to achieve transmission.

[0070] When it is necessary to drive the adapter plate 20 to rotate the first pulley 30 together along the limiting groove 61 around the second axis L2, the limiting member 62 can be screwed on, so that the rod 621 and the base plate 10 are threadedly connected (the first end of the rod 621 moves out of the threaded hole 11) or the rod 621 and the base plate 10 are disconnected (the first end of the rod 621 comes out of the threaded hole 11), and the cap 622 and the adapter plate 20 are released from contact, so that the adapter plate 20 can rotate relative to the base plate 10 along the limiting groove 61 around the second axis L2, so that the first pulley 30 gradually moves away from or gradually moves closer to the second pulley 40, and the limiting member 62 is in the limiting position. At this time, in the tensioning mode, the adapter plate 20 can be driven to rotate the first pulley 30 relative to the base plate 10 along the limiting groove 61 around the second axis L2, increasing the distance between the first pulley 30 and the second pulley 40, and gradually tensioning the flexible transmission member 50. Of course, at this time, according to the actual situation and actual needs, the adapter plate 20 can be driven to drive the first pulley 30 to rotate relative to the base plate 10 along the limiting groove 61 around the second axis L2, thereby reducing the distance between the first pulley 30 and the second pulley 40, so that the flexible transmission component 50 gradually loosens.

[0071] It should be noted that, in the embodiments of this application, the target position refers to the position where the first pulley 30 revolves around the second axis L2, so that the flexible transmission member 50 reaches the target tension or target looseness.

[0072] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown in the embodiment of this application, there are multiple limiting grooves 61 and multiple limiting members 62, and they are arranged in a one-to-one correspondence. The multiple limiting grooves 61 and multiple limiting members 62 cooperate in a one-to-one correspondence to achieve a better limiting effect on the adapter plate 20.

[0073] It should be noted that in the embodiments of this application, "multiple" includes two or more.

[0074] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown in the embodiment of this application, there are four limiting grooves 61 and four limiting members 62. The four limiting grooves 61 and four limiting members 62 are evenly distributed around the second axis L2.

[0075] Optionally, in the embodiments of this application, the limiting member 62 includes, but is not limited to, screws.

[0076] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown in the embodiment of this application, the limiting groove 61 is an arc-shaped groove with the second axis L2 as the center.

[0077] It should be noted that, in this embodiment, the radial dimension of the limiting groove 61 refers to the dimension of the limiting groove 61 along its arc diameter direction, which can also be referred to as the width of the limiting groove 61. The radial dimension of the cap 622 refers to the diameter of the cap 622.

[0078] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown in the embodiment of this application, the arc of the limiting groove 61 is a minor arc, that is, the central angle corresponding to the arc of the limiting groove 61 is less than 180°.

[0079] Of course, in other optional embodiments of this application, the arc of the limiting groove 61 can be designed as a semi-circle according to the actual situation and actual needs. In this case, the limiting groove 61 is a semi-circular groove, and the central angle corresponding to the arc of the limiting groove 61 is 180°; or, the arc of the limiting groove 61 can be designed as a superior arc, in which case the central angle corresponding to the arc of the limiting groove 61 is greater than 180°; or, multiple limiting grooves 61 can be connected end to end to form an annular groove (that is, the limiting structure 60 includes a limiting member 62 and an annular groove that cooperates with the limiting member 62, and the center of the annular groove is the second intersection point).

[0080] Optionally, in this embodiment, when the central angle corresponding to the arc of the limiting groove 61 is equal to or greater than 180°, and the limiting groove 61 intersects with both the nearest and farthest positions at the same time, the adapter plate 20 rotates along the limiting groove 61, which can drive the first pulley 30 to switch between the nearest and farthest positions, thereby achieving the maximum tension 2d of the flexible transmission component 50.

[0081] Optionally, in this embodiment of the application, the arc length of the limiting groove 61 or the size of the central angle corresponding to the arc can be designed and adjusted according to the actual situation and actual needs, and no limitation is made here.

[0082] Optionally, in this embodiment, when there are multiple limiting grooves 61, the arc length or the size of the central angle corresponding to any two limiting grooves 61 can be the same or different. This can be designed and adjusted according to actual conditions and needs, and is not limited here.

[0083] Optionally, in this embodiment, the increase or decrease in the distance between the first pulley 30 and the second pulley 40 can be controlled by controlling the length of the arc or the size of the central angle corresponding to the arc as the adapter plate 20 rotates around the second axis L2 along the limiting groove 61, thereby achieving accurate control of the tension or looseness of the flexible transmission component 50.

[0084] Of course, in other optional embodiments of this application, a scale can be set on the arc sidewall of the limiting groove 61 according to the actual situation and actual needs, and the position of the adapter plate 20 and the first pulley 30, as well as the tension or looseness of the flexible transmission member 50, can be marked by the scale lines.

[0085] Optionally, in this embodiment of the application, the user can manually drive the adapter plate 20 to rotate around the second axis L2 along the limiting groove 61 so that the first pulley 30 gradually moves away from or gradually moves closer to the second pulley 40.

[0086] Of course, in other optional embodiments of this application, a driver for driving the adapter plate 20 to rotate around the second axis L2 can be provided according to actual needs. Optionally, the driver is disposed on the base plate 10 and drivenly connected to the adapter plate 20. The driver provides power for the rotation of the adapter plate 20 around the second axis L2, which not only improves the degree of automation, but also allows the adapter plate 20 and the first pulley 30 to be stopped at any position. It can effectively and accurately control the rotation angle or number of turns of the adapter plate 20, thereby achieving accurate control of the tension of the flexible transmission component 50. At this time, the tensioning mechanism 100 provided in the embodiments of this application may or may not include the limiting structure 60. It can be designed and adjusted according to the actual situation and actual needs, and is not limited here.

[0087] Optionally, such as Figures 4 to 6 As shown in the embodiment of this application, the tensioning mechanism further includes a locking structure 80. The locking structure 80 is connected to the base plate 10 and cooperates with or is connected to the adapter plate 20, and is configured to lock the adapter plate 20 in a target position.

[0088] In this embodiment, the substrate 10 supports the locking structure 80. When the adapter plate 20 is rotated to the target position, the locking structure 80 can be installed on the substrate 10, and the locking structure 80 can be engaged or connected with the adapter plate 20 to lock the adapter plate 20 in the target position, thereby fixing the relative position of the adapter plate 20 and the substrate 10. In the transmission mode, the locking structure 80 can be used to lock the adapter plate 20 on the substrate 10, thereby fixing the position of the adapter plate 20 and the first pulley 30 relative to the substrate 10. In the tensioning mode, the locking structure 80 can be unlocked, releasing the adapter plate 20 from the substrate 10, allowing the adapter plate 20 to rotate around the second axis L2.

[0089] Optionally, such as Figures 4 to 6 As shown in the embodiment of this application, the locking structure 80 includes: a mounting portion 81, a fastener 82, and a pressure plate portion 83. The fastener 82 is configured to fix the mounting portion 81 onto the substrate 10; the pressure plate portion 83 is fixedly connected to the mounting portion 81 and is located on the side of the adapter plate 20 away from the substrate 10, and is configured to press the adapter plate 20 onto the substrate 10 when the mounting portion 81 is fixedly mounted on the substrate 10.

[0090] In this embodiment, after the adapter plate 20 is rotated to the target position, the adapter plate 20 is pressed onto the substrate 10 by the pressure plate portion 83, and the mounting portion 81, which is fixedly connected to the pressure plate portion 83, is fixedly mounted onto the substrate 10 by the fastener 82, thereby locking the adapter plate 20 in the target position by the locking structure 80.

[0091] Optionally, such as Figures 4 to 6 As shown in the embodiment of this application, the number of locking structures 80 is at least two; at least two locking structures 80 are arranged around the periphery of the adapter plate 20 along the circumference of the adapter plate 20.

[0092] Optionally, such as Figure 4 and Figure 5 As shown in this embodiment, there are four locking structures 80. Two locking structures 80 are located on the side of the adapter plate 20 near the second pulley 40, and a limiting member 62 is positioned between these two locking structures 80. The other two locking structures 80 are located on the side of the adapter plate 20 away from the second pulley 40, and another limiting member 62 is positioned between these two locking structures 80. The locking structures 80 and the limiting member 62 provide a dual locking effect on the adapter plate 20, ensuring an effective, stable, and reliable locking effect.

[0093] Optionally, in this embodiment, the fastener 82 includes, but is not limited to, a screw. The mounting part 81 is provided with a first locking hole (not shown in the figure), and the base plate 10 is provided with a second locking hole (not shown in the figure). The second locking hole is a threaded hole that engages with the screw. When the adapter plate 20 is rotated to the target position, the screw can be threaded through the first locking hole and then threadedly connected to the second locking hole, thereby fixing the mounting part 81 on the base plate 10.

[0094] Optionally, such as Figure 4 and Figure 6 As shown in the embodiment of this application, the mounting part 81 and the pressure plate part 83 are connected in a right-angle "Z" shape.

[0095] Optionally, such as Figure 7As shown in the embodiment of this application, the tensioning mechanism further includes a rotation-blocking structure 90. At least a portion of the rotation-blocking structure 90 is rotatably disposed relative to the substrate 10. The rotation-blocking structure 90 cooperates with the adapter plate 20 and is configured to prevent the adapter plate 20 from rotating in the direction that brings the first pulley 30 closer to the second pulley 40, so as to lock the flexible transmission member 50 in a tensioned state.

[0096] In this embodiment, in the tensioning mode, the adapter plate 20 rotates relative to the base plate 10 around the second axis L2, causing the first pulley 30 to move away from the second pulley 40, increasing the distance between the first pulley 30 and the second pulley 40, thus tensioning the flexible transmission member 50. A rotation-blocking structure 90 is mounted on the base plate 10, and at least a portion of the structure of the rotation-blocking structure 90 is rotatably disposed relative to the base plate 10. The rotation-blocking structure 90 cooperates with the adapter plate 20 to prevent the adapter plate 20 from rotating in the direction that would bring the first pulley 30 closer to the second pulley 40, i.e., it prevents the distance between the first pulley 30 and the second pulley 40 from decreasing and causing the flexible transmission member 50 to loosen. Therefore, when the adapter plate 20 rotates to the target position, the rotation-blocking structure 90 can lock the adapter plate 20 in the target position and lock the flexible transmission member 50 in a tensioned state, preventing the flexible transmission member 50 from loosening.

[0097] In this embodiment of the application, during the adjustment of the adapter plate 20 in the tensioning mode, the anti-rotation structure 90 can automatically and steplessly lock the tensioning state of the flexible transmission component 50 in real time, which greatly improves the tensioning efficiency of the flexible transmission component 50.

[0098] Optionally, such as Figure 7 As shown in the embodiment of this application, the anti-rotation structure 90 includes a ratchet, a pawl 91, and an elastic element 92; the ratchet is fixedly connected to the adapter plate 20, and the pawl 91 is rotatably mounted on the base plate 10; the elastic element 92 is mounted on the base plate 10 and engages or connects with the pawl 91, and is configured to apply a force to the pawl 91 to engage with the ratchet teeth, so as to prevent the ratchet from rotating in the opposite direction.

[0099] In this embodiment, the ratchet is mounted on the adapter plate 20, and the rotation of the adapter plate 20 drives the ratchet to rotate synchronously. The pawl 91 is mounted on the base plate 10 and rotatably disposed relative to the base plate 10. The pawl 91 is used to engage with the ratchet teeth on the ratchet, so that the ratchet can only rotate in one direction and cannot rotate backwards. An elastic element 92 is mounted on the base plate 10, and the elastic element 92 cooperates with or connects to the pawl 91, used to apply a force to the pawl 91 to engage with the ratchet teeth. The elastic element 92 has a preload force. Under the action of the preload force of the elastic element 92, the pawl 91 always tends to engage with the ratchet teeth. Under the engagement of the pawl 91 and the ratchet teeth, the ratchet can only rotate in the direction that causes the adapter plate 20 to drive the first pulley 30 away from the second pulley 40 (e.g., ...). Figure 7It can rotate counterclockwise as shown, but not in the opposite direction (e.g., as shown). Figure 7 (As shown in the clockwise direction). The pawl 91 engages with the ratchet teeth to prevent the ratchet and the adapter plate 20 from rotating in opposite directions.

[0100] Optionally, such as Figure 7 As shown in the embodiments of this application, the elastic element 92 includes, but is not limited to, a torsion spring. The anti-rotation structure 90 uses a torsion spring to preload the pawl 91 to prevent the ratchet and the adapter plate 20 from rotating clockwise.

[0101] Optionally, in this embodiment, the ratchet and the adapter plate 20 are separately configured and fixedly connected. Of course, in other optional embodiments of this application, the ratchet and the adapter plate 20 can also be configured as an integral structure according to actual needs, or ratchet teeth can be provided on the adapter plate 20, and the adapter plate 20 can act as a ratchet to cooperate with the pawl 91.

[0102] Of course, in other optional embodiments of this application, the anti-rotation structure 90 may include a one-way bearing or a one-way clutch, depending on the actual situation and needs. The adapter plate 20 is unidirectionally rotatably connected to the base plate 10 via the one-way bearing or one-way clutch. In order to achieve the tensioning of the flexible transmission member 50, the adapter plate 20 can be rotated relative to the base plate 10 around the second axis L2 in a direction that moves the first pulley 30 away from the second pulley 40. Since the one-way bearing or one-way clutch restricts the adapter plate 20 to rotate only in one direction relative to the base plate 10, the rotation of the adapter plate 20 drives the first pulley 30 away from the second pulley 40, and the distance between the first pulley 30 and the second pulley 40 increases, thus tensioning the flexible transmission member 50. The adapter plate 20 cannot rotate in the opposite direction, that is, it cannot drive the first pulley 30 to approach the second pulley 40, thereby locking the adapter plate 20 in the target position and locking the flexible transmission member 50 in a tensioned state.

[0103] Optionally, the tensioning mechanism 100 provided in this application embodiment can be applied to fields such as belt tensioning.

[0104] Based on the same inventive concept, this application provides a control method for a tensioning mechanism. The control method includes: in the tensioning mode, driving the adapter plate 20 of the tensioning mechanism to move relative to the base plate 10, so that the first pulley 30 moves away from the second pulley 40, thereby increasing the distance between the first pulley 30 and the second pulley 40.

[0105] like Figures 1 to 6As shown in the embodiment of this application, the control method of the tensioning mechanism includes using the adapter plate 20 to drive the first pulley 30 away from the second pulley 40, thereby increasing the distance between the first pulley 30 and the second pulley 40, in order to tension the flexible transmission member 50 surrounding the outer peripheral wall of the first pulley 30 and the second pulley 40. During the tensioning step, the tensioning mechanism 100 is in tension mode.

[0106] In tension mode (i.e., when the flexible transmission component 50 becomes loose and needs to be tensioned), the drive adapter plate 20 moves relative to the base plate 10. The adapter plate 20 drives the first pulley 30 to gradually move away from the second pulley 40, thereby gradually increasing the distance between the first pulley 30 and the second pulley 40, thus gradually tensioning the flexible transmission component 50. The tensioned flexible transmission component 50 enables effective movement and power transmission between the first pulley 30 and the second pulley 40, ensuring smooth transmission and improving mechanical efficiency.

[0107] It should be noted that, since the control method provided in this application embodiment is a control method based on the tensioning mechanism provided in this application embodiment, the control method provided in this application embodiment can be used to control the tensioning mechanism provided in this application embodiment (including but not limited to tensioning and transmission). Therefore, the control method provided in this application embodiment also has the above-mentioned beneficial effects of the tensioning mechanism provided in this application embodiment, which will not be repeated here.

[0108] Optionally, in this embodiment of the application, in the tensioning mode, controlling the transition plate 20 of the tensioning mechanism to move relative to the base plate 10, so that the first pulley 30 moves away from the second pulley 40, thereby increasing the distance between the first pulley 30 and the second pulley 40, includes: The drive adapter plate 20 rotates around the second axis L2, causing the first axis L1 of the first pulley 30 to rotate around the second axis L2, thereby increasing the distance between the first axis L1 and the third axis L3 of the second pulley 40.

[0109] like Figures 1 to 6As shown in the embodiment of this application, the first pulley 30 is rotatably disposed relative to the adapter plate 20 about the first axis L1, the second pulley 40 is rotatably disposed relative to the substrate 10 about the third axis L3, and the adapter plate 20 is rotatably disposed relative to the substrate 10 about the second axis L2. A distance d exists between the first axis L1 and the second axis L2. Driving the adapter plate 20 to rotate about the second axis L2 causes the first pulley 30 to rotate, and the first axis L1 of the first pulley 30 rotates about the second axis L2, causing the first axis L1 to gradually move away from or towards the third axis L3 (i.e., the first pulley 30 gradually moves away from or towards the second pulley 40). The distance between the first axis L1 and the third axis L3 gradually increases or decreases (i.e., the distance between the first pulley 30 and the second pulley 40 gradually increases or decreases), thereby tensioning the flexible transmission member 50 or loosening it.

[0110] In this embodiment of the application, in the tensioning mode, the drive adapter plate 20 rotates around the second axis L2, causing the first pulley 30 and its first axis L1 to rotate around the second axis L2, so that the first pulley 30 gradually moves away from the second pulley 40, and the distance between the first pulley 30 and the second pulley 40 gradually increases, thereby tensioning the flexible transmission member 50.

[0111] Optionally, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown in this embodiment, the adapter plate 20 is provided with a limiting groove 61, with the limiting groove 61 centered on the second axis L2. The base plate 10 is provided with a limiting member 62, which passes through the limiting groove 61. When the adapter plate 20 is driven to rotate, due to the limiting effect of the limiting member 62 and the limiting groove 61 on the adapter plate 20, the adapter plate 20 can only rotate along the limiting groove 61 around the second axis L2, ensuring that the rotation of the adapter plate 20 is centered on the second axis L2.

[0112] In tension mode, the drive adapter plate 20 rotates along the limiting groove 61 around the second axis L2, causing the first pulley 30 and its first axis L1 to rotate around the second axis L2, so that the first pulley 30 gradually moves away from the second pulley 40, and the distance between the first pulley 30 and the second pulley 40 gradually increases, thereby tensioning the flexible transmission component 50.

[0113] Optionally, such as Figure 1 and Figure 4 As shown in this embodiment, the adapter plate 20 can be manually driven to rotate around the second axis L2. Alternatively, a driver can be provided to automatically drive the adapter plate 20 to rotate around the second axis L2.

[0114] Optionally, in this embodiment of the application, the control method of the tensioning mechanism further includes: in the transmission mode, driving the first pulley 30 to rotate around the first axis L1, so that the first pulley 30 drives the second pulley 40 to rotate through the tensioned flexible transmission member 50.

[0115] like Figures 1 to 6 As shown in the embodiment of this application, the control method of the tensioning mechanism further includes a transmission step of driving the first pulley 30 to rotate, which in turn drives the second pulley 40 to rotate via the tensioned flexible transmission member 50. During the transmission step, the tensioning mechanism 100 is in transmission mode.

[0116] In the transmission mode (with the flexible transmission component 50 in a tensioned state), the first pulley 30 is driven to rotate around the first axis L1. The rotating first pulley 30 drives the second pulley 40 to rotate through the flexible transmission component 50 tightly fitted on the first pulley 30 and the second pulley 40, thereby realizing effective motion and power transmission between the first pulley 30 and the second pulley 40, ensuring smooth transmission and improving the mechanical efficiency of the transmission.

[0117] Optionally, such as Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown in the embodiment of this application, the drive unit 70 is connected to the first pulley 30, and the drive unit 70 is used to drive the first pulley 30 to rotate around the first axis L1.

[0118] In the transmission mode, the drive unit 70 drives the first pulley 30 to rotate around the first axis L1, and the first pulley 30 drives the second pulley 40 to rotate through the tensioned flexible transmission member 50 to achieve transmission.

[0119] Optionally, in this embodiment, during the transmission mode, i.e., when the adapter plate 20 has rotated to the target position and the flexible transmission member 50 has been tensioned, it is necessary to lock the adapter plate 20 onto the substrate 10 to fix the relative position of the adapter plate 20 and the substrate 10. Optionally, the cap 622 of the limiting member 62 can be used to press the adapter plate 20 against the substrate 10, and the rod 621 of the limiting member 62 can be threaded and tightened to the substrate 10, thereby locking the adapter plate 20 onto the substrate 10. Of course, the locking structure 80 can also be used to lock the adapter plate 20 onto the substrate 10.

[0120] By applying the embodiments of this application, at least the following beneficial effects can be achieved: In this embodiment, the substrate is used to support the adapter plate, the first pulley, the second pulley, and the flexible transmission component.

[0121] Both the first pulley and the second pulley are rotatably arranged. A flexible transmission component is wrapped around the outer peripheral wall of the first pulley and the second pulley. The movement and power transmission between the first pulley and the second pulley can be realized through the flexible transmission component.

[0122] The first pulley is mounted on the adapter plate, and the second pulley is mounted on the base plate. The adapter plate is mounted on the base plate and is movably disposed. The adapter plate can drive the first pulley to move relative to the base plate, so that the first pulley gradually moves away from or closer to the second pulley, thereby adjusting the distance between the first pulley and the second pulley.

[0123] As the first pulley moves further away from the second pulley under the influence of the adapter plate, the distance between the first and second pulleys gradually increases. The flexible transmission component wrapped around the outer periphery of the first and second pulleys is gradually tensioned, causing the flexible transmission component to be tightly fitted onto the first and second pulleys. This allows for effective movement and power transmission between the first and second pulleys through the tensioned flexible transmission component, ensuring smooth transmission and improving the mechanical efficiency of the transmission.

[0124] As the first pulley gradually approaches the second pulley under the influence of the adapter plate, the distance between them gradually decreases, and the flexible transmission component wrapped around the outer periphery of both pulleys gradually loosens. Depending on the actual situation and needs, the user can drive the adapter plate to bring the first pulley closer to the second pulley, gradually loosening the flexible transmission component. This allows the flexible transmission component to be tightly fitted onto the first and second pulleys with an appropriate preload (ensuring it is not too tight), achieving effective movement and power transmission between the two pulleys, ensuring smooth transmission, and improving mechanical efficiency.

[0125] In this embodiment, by driving the adapter plate to move relative to the base plate, the first pulley can be driven to gradually move away from or closer to the second pulley, thereby gradually increasing or decreasing the distance between the first and second pulleys. This achieves the adjustment of the distance between the first and second pulleys, which can gradually tighten or loosen the flexible transmission component. This allows for real-time adjustment of the tightness of the flexible transmission component, ensuring that it is always tightly fitted onto the first and second pulleys. This guarantees the effective transmission of motion and power, smooth transmission, and improved mechanical efficiency.

[0126] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0127] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0128] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.

Claims

1. A tensioning mechanism, characterized in that, include: Substrate, adapter plate, first pulley, second pulley, and flexible transmission component; The first pulley is rotatably mounted on the adapter plate about a first axis; The second pulley is rotatably mounted on the base plate; The flexible transmission component is wound around the outer peripheral wall of the first pulley and the second pulley; The adapter plate is mounted on the base plate in a rotatable manner about a second axis or in a movable manner, and there is a gap between the first axis and the second axis; the adapter plate is configured to drive the first pulley to gradually move away from or gradually move closer to the second pulley, so that the distance between the first pulley and the second pulley gradually increases or gradually decreases, and tensions the flexible transmission member when the first pulley moves away from the second pulley.

2. The tensioning mechanism according to claim 1, characterized in that, The trajectory of the first axis is a circle or arc centered on the second axis.

3. The tensioning mechanism according to claim 2, characterized in that, It also includes a limiting structure; The limiting structure is connected to the substrate and cooperates with the adapter plate, and is configured to restrict the adapter plate from rotating about the second axis.

4. The tensioning mechanism according to claim 3, characterized in that, The limiting structure includes: At least one limiting groove is disposed on the adapter plate with the second axis as the center line and around the second axis; A limiting member is provided in at least one of the limiting grooves; One end of the limiting member passes through the corresponding limiting groove and is connected to the base plate, and is configured to restrict the adapter plate from rotating along the limiting groove.

5. The tensioning mechanism according to claim 4, characterized in that, The limiting component includes: The rod has threads on the outer peripheral wall of the first end; The cap is fixedly connected to the second end of the rod and is located on the side of the adapter plate away from the base plate; the radial dimension of the cap is greater than the radial dimension of the limiting groove; The substrate is provided with a threaded hole, and the first end of the rod passes through the corresponding limiting groove and is threadedly connected to the substrate. The limiting member has the following functions: it causes the cap to press the adapter plate against the base plate to fix the fixed position of the adapter plate; and it causes the cap to release from contact with the adapter plate, allowing the adapter plate to rotate along the limiting groove.

6. The tensioning mechanism according to claim 4, characterized in that, The number of each of the limiting grooves and the limiting components is multiple, and they are arranged in a one-to-one correspondence; and / or, The limiting component includes screws.

7. The tensioning mechanism according to claim 1, characterized in that, It also includes the drive unit; The drive unit is fixedly mounted on the adapter plate; The drive unit is connected to the first pulley and is configured to drive the first pulley to rotate around a first axis.

8. The tensioning mechanism according to claim 1, characterized in that, It also includes locking structures; The locking structure is connected to the substrate and cooperates with or connects to the adapter plate, and is configured to lock the adapter plate in the target position.

9. The tensioning mechanism according to claim 8, characterized in that, The locking structure includes: Installation Department; Fasteners are configured to securely mount the mounting portion onto the substrate; The pressure plate portion is fixedly connected to the mounting portion and is located on the side of the adapter plate away from the substrate. It is configured to press the adapter plate onto the substrate when the mounting portion is fixedly mounted on the substrate.

10. The tensioning mechanism according to claim 8, characterized in that, The number of the locking structures is at least two; At least two of the locking structures are arranged around the periphery of the adapter plate along its circumference.

11. The tensioning mechanism according to claim 2, characterized in that, It also includes a resistive rotation structure; At least a portion of the anti-rotation structure is rotatably disposed relative to the substrate. The anti-rotation structure cooperates with the adapter plate and is configured to prevent the adapter plate from rotating in a direction that would bring the first pulley closer to the second pulley, thereby locking the flexible transmission member in a tensioned state.

12. The tensioning mechanism according to claim 11, characterized in that, The anti-rotation structure includes a ratchet, a pawl, and an elastic element; the ratchet is fixedly connected to the adapter plate, and the pawl is rotatably mounted on the base plate; the elastic element is mounted on the base plate and engages or connects with the pawl, configured to apply a force to the pawl to engage with the ratchet teeth, thereby preventing the ratchet from rotating in the opposite direction; or... The resistive structure includes a one-way bearing or a one-way clutch, and the adapter plate is rotatably connected to the base plate in one direction via the one-way bearing or one-way clutch.

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