Rotary tensioning mechanism

Abstract

The utility model belongs to the technical field of tensioning structures, and discloses a rotating tensioning mechanism which comprises a rotating piece, a tensioning piece and a tensioning piece. The tensioning piece is provided with a first side face facing the rotating piece and a second side face deviating from the rotating piece, and the first side face is provided with a first end and a second end which are opposite to each other; when the rotating piece rotates towards the first end to a first angle, the rotating piece abuts against the first end and is separated from the second end, and the tensioning piece is in an outward expansion state. And when the rotating piece rotates towards the second end part to a second angle, the rotating piece abuts against the second end part and is separated from the first end part, and the tensioning piece is in an inward contraction state. According to the rotating tensioning mechanism, the state of the tensioning piece can be rapidly switched by rotating the rotating piece, so that flexible pieces such as a belt are selectively tensioned, and the rapid tensioning adjusting function is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tensioning structure technology, and in particular to a rotary tensioning mechanism. Background Technology

[0002] In mechanical structures, belts are commonly used in a variety of applications and are often used to transport objects or transmit power.

[0003] However, after long-term use, the elasticity of the belt will decrease, causing the belt to loosen. The friction between the belt and the transmission mechanism (such as the pulley) will be greatly reduced, resulting in slippage and a significant decrease in the belt's transmission efficiency.

[0004] Therefore, there is an urgent need for a rotary tensioning mechanism to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a rotary tensioning mechanism that can quickly switch the state of the tensioning component by rotating the rotating component, so as to selectively tension flexible components such as belts and achieve a rapid tension adjustment function.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A rotary tensioning mechanism is provided, comprising:

[0008] A rotating component that rotates along a preset axis;

[0009] A tensioning member having a first side facing the rotating member and a second side facing away from the rotating member, the first side having opposing first and second ends;

[0010] When the rotating member rotates toward the first end to the first angle, the rotating member abuts against the first end and disengages from the second end, and the tensioning member is in an outward expansion state;

[0011] When the rotating member rotates toward the second end to the second angle, the rotating member abuts against the second end and disengages from the first end, and the tensioning member is in an inward contraction state.

[0012] Preferably, the first side is provided with an arc-shaped abutting wall, an arc-shaped connecting wall and a connecting ring, the arc-shaped abutting wall is formed at the first end, the connecting ring is formed at the second end, and the two ends of the arc-shaped connecting wall extend to the arc-shaped abutting wall and the connecting ring respectively;

[0013] When the rotating component rotates toward the arc-shaped abutting wall to a first angle, the rotating component abuts against the arc-shaped abutting wall and disengages from the connecting ring; when the rotating component rotates toward the connecting ring to a second angle, the rotating component abuts against the connecting ring and disengages from the arc-shaped abutting wall.

[0014] Preferably, the outer wall of the connecting ring is provided with a buckle, and when the rotating part rotates to the second angle, the rotating part abuts against the force-bearing surface of the buckle.

[0015] Preferably, the angle between the force-bearing surface and the tangent of the arc-shaped connecting wall is less than or equal to 90°.

[0016] Preferably, the distance between the arc-shaped connecting wall and the second side is less than the distance between the arc-shaped abutting wall and the second side.

[0017] Preferably, the thickness of the arc-shaped connecting wall gradually decreases from the arc-shaped abutting wall toward the connecting ring.

[0018] Preferably, the rotating component includes a first pressing part and a second pressing part, wherein the first pressing part and the second pressing part are arranged at an angle and extend outward;

[0019] When the rotating component rotates to the first angle, the first pressure part abuts against the arc-shaped abutment wall, and the second pressure part disengages from the connecting ring; when the rotating component rotates to the second angle, the second pressure part abuts against the connecting ring, and the first pressure part disengages from the arc-shaped abutment wall.

[0020] Preferably, the device further includes a connecting rod, one end of which is inserted into the connecting ring, and the other end of which is used to connect to the mounting and fixing structure of the tensioning member.

[0021] Preferably, the device further includes a mounting plate, the other end of which is inserted into the mounting plate, the mounting plate being used to install the mounting and fixing structure of the tensioning member.

[0022] Preferably, the device further includes a mounting base, wherein the end of the rotating member is connected to the mounting base, and the mounting base is capable of driving the rotating member to rotate around a preset axis.

[0023] The beneficial effects of this utility model are:

[0024] The rotary tensioning mechanism provided by this utility model allows the rotating component to rotate along a preset axis, selectively contacting either the first or second end of the tensioning component to switch its state. When the rotating component rotates to a first angle, it contacts the first end of the tensioning component, causing the tensioning component to be in an outward expansion state, at which point it can tension the flexible component located on its outer side. When the rotating component rotates to a second angle, it disengages from the first end of the tensioning component and contacts the second end, causing the tensioning component to switch to a relaxed state, in an inward contraction state. In summary, the rotary tensioning mechanism provided by this utility model can quickly switch the state of the tensioning component by rotating the rotating component, selectively tensioning flexible components such as belts, and achieving a rapid tension adjustment function. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the rotating tensioning mechanism provided by this utility model;

[0026] Figure 2 This is a structural schematic diagram of the rotating component provided by this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the tensioning component provided by this utility model. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the structure of the tensioning component provided by this utility model. Figure 2 ;

[0029] Figure 5 This is a schematic diagram of the state of the rotating component provided by this utility model when it rotates to the first angle;

[0030] Figure 6 This is a schematic diagram of the state of the rotating component provided by this utility model when it rotates to the second angle.

[0031] In the picture:

[0032] 10. Rotating component; 11. First pressure-applying part; 12. Second pressure-applying part; 121. Force-applying surface;

[0033] 20. Tensioner; 201. First end; 202. Second end; 21. First side; 211. Arc-shaped clamping wall; 212. Arc-shaped connecting wall; 213. Connecting ring; 214. Buckle; 2141. Force-bearing surface; 22. Second side; 221. Anti-slip texture; 23. Connecting hole;

[0034] 30. Connecting rod; 31. Limiting ring; 32. First connecting piece;

[0035] 40. Mounting piece; 41. Second connecting piece;

[0036] 50. Mounting bracket. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] like Figures 1-6 As shown, this embodiment provides a rotating tensioning mechanism for tensioning flexible components such as belts, chains, and steel cables. The rotating tensioning mechanism includes a rotating component 10 and a tensioning component 20. The rotating component 10 is rotatably disposed along a preset axis. The tensioning component 20 has a first side 21 facing the rotating component 10 and a second side 22 away from the rotating component 10. The first side 21 has a first end 201 and a second end 202 opposite to each other. The rotating component 10 can selectively abut against the first end 201 or the second end 202 by rotating.

[0042] Furthermore, such as Figure 5 As shown, when the rotating member 10 rotates toward the first end 201 to a first angle, the rotating member 10 abuts against the first end 201 and disengages from the second end 202, and the tensioning member 20 is in an outwardly expanding state; as Figure 6 As shown, when the rotating member 10 rotates toward the second end 202 to the second angle, the rotating member 10 abuts against the second end 202 and disengages from the first end 201, and the tensioning member 20 is in an inward contraction state.

[0043] Specifically, in this embodiment, the rotating tensioning mechanism allows the rotating member 10 to rotate along a preset axis to selectively abut against either the first end 201 or the second end 202 of the tensioning member 20, thereby switching the state of the tensioning member 20. When the rotating member 10 rotates to a first angle, it abuts against the first end 201 of the tensioning member 20, causing the tensioning member 20 to be in an outwardly expanding state, at which point the tensioning member 20 can tension the flexible member located on its outer side. When the rotating member 10 rotates to a second angle, it disengages from the first end 201 of the tensioning member 20 and abuts against the second end 202, causing the tensioning member 20 to switch to a relaxed state in an inwardly contracting state. In summary, the rotating tensioning mechanism provided in this embodiment can quickly switch the state of the tensioning member 20 by rotating the rotating member 10 to selectively tension flexible members such as belts, achieving a rapid tension adjustment function.

[0044] For example, such as Figures 2-6 As shown, the rotating member 10 includes a first pressing part 11 and a second pressing part 12. The first pressing part 11 and the second pressing part 12 are arranged at an angle and extend outward. When the rotating member 10 rotates to a first angle, the first pressing part 11 abuts against the first end 201, and the second pressing part 12 disengages from the tensioning member 20. When the rotating member 10 rotates to a second angle, the second pressing part 12 abuts against the second end 202, and the first pressing part 11 disengages from the tensioning member 20.

[0045] For example, such as Figures 3-6As shown, an arc-shaped abutting wall 211, an arc-shaped connecting wall 212, and a connecting ring 213 are provided on the first side 21. The arc-shaped abutting wall 211 is formed at the first end 201, and the connecting ring 213 is formed at the second end 202. The two ends of the arc-shaped connecting wall 212 extend to the arc-shaped abutting wall 211 and the connecting ring 213, respectively. When the rotating member 10 rotates toward the arc-shaped abutting wall 211 to the first angle, the first pressing part 11 of the rotating member 10 abuts against the arc-shaped abutting wall 211, and the second pressing part 12 disengages from the connecting ring 213. At this time, the first pressing part 11 pushes the tensioning member 20 to expand outward, and the second side 22 tensions the flexible member outward. When the rotating member 10 rotates toward the connecting ring 213 to the second angle, the second pressing part 12 of the rotating member 10 abuts against the connecting ring 213, and the first pressing part 11 disengages from the arc-shaped abutting wall 211. At this time, the tensioning member 20 is in an inward contraction state, and the second pressing part 12 drives the tensioning member 20 to move inward a certain distance to ensure that the second side 22 of the tensioning member 20 disengages from the flexible member, avoiding friction between the tensioning member and the flexible member in the non-tensioned state.

[0046] For example, such as Figures 3-6 As shown, the distance between the arc-shaped connecting wall 212 and the second side surface 22 is less than the distance between the arc-shaped abutting wall 211 and the second side surface 22. In other words, the thickness of the tensioning member 20 at the location of the arc-shaped connecting wall 212 is less than the thickness of the tensioning member 20 at the location of the arc-shaped abutting wall 211. Specifically, as... Figure 6 As shown, when the rotating member 10 reciprocates between the first angle and the second angle, the rotating member 10 always disengages from the arc-shaped connecting wall 212. After the rotating member 10 disengages from the arc-shaped clamping wall 211, the tensioning member 20 loses its radial constraint and can therefore quickly disengage from the flexible member, thereby accelerating the state switching rate and improving the tension adjustment efficiency.

[0047] For example, such as Figure 3As shown, the thickness of the arc-shaped connecting wall 212 gradually decreases from the arc-shaped abutment wall 211 toward the connecting ring 213 to reduce material usage and improve portability. During the switching process of the rotating member 10 from the first angle to the second angle, the first pressure-applying part 11 enters the area corresponding to the arc-shaped connecting wall 212 from the area corresponding to the arc-shaped abutment wall 211. Since the thickness of the arc-shaped connecting wall 212 gradually decreases from the arc-shaped abutment wall 211 toward the connecting ring 213, when the first pressure-applying part 11 passes the arc-shaped connecting wall 212 and approaches the front section of the arc-shaped abutment wall 211, the first pressure-applying part 11 still abuts against the front section, and when the first pressure-applying part 11 passes the arc-shaped connecting wall 212 and approaches the rear section of the connecting ring 213, the first pressure-applying part 11 gradually disengages from the rear section. During this process, as the first pressure-applying part 11 rotates from the front to the rear of the arc-shaped connecting wall 212, the friction between the second side 22 of the tensioning member 20 and the flexible member decreases linearly, and the tensioning member 20 gradually disengages from the flexible member. A clearance space is formed in the inner region of the arc-shaped connecting wall 212. When the rotating member 10 rotates to the second angle, the second pressure-applying part 12 presses against the connecting ring 213, and the first pressure-applying part 11 is located in the clearance space formed in the inner region of the arc-shaped connecting wall 212.

[0048] For example, such as Figures 3-6 As shown, a buckle 214 is provided on the outer wall of the connecting ring 213. When the rotating member 10 rotates to the second angle, the second pressing part 12 of the rotating member 10 abuts against the buckle 214. Specifically, a force-bearing surface 2141 is formed on one side of the buckle 214, and a force-applying surface 121 is provided on the outer wall of the second pressing part 12. When the rotating member 10 rotates to the second angle, the force-applying surface 121 presses against the force-bearing surface 2141, and the rotating member 10 applies a force to the tensioning member 20, driving the tensioning member 20 to move away from the flexible member, so that the second side 22 disengages from the flexible member, ensuring that the flexible member can move smoothly.

[0049] For example, the angle between the force-bearing surface 2141 and the tangent of the arc-shaped connecting wall 212 is less than or equal to 90°. That is, the force-bearing surface 2141 and the tangent of the second side surface 22 are perpendicular to each other or set at an acute angle. When the second pressure-applying part 12 acts on the force-bearing surface 2141, the tensioning member 20 is subjected to a force opposite to its tensioning direction, so as to drive the tensioning member 20 to disengage from the flexible member, and can prevent the second pressure-applying part 12 from disengaging from the buckle 214, thereby improving stability.

[0050] For example, such as Figure 1 and Figure 4 As shown, the outer wall of the tensioning member 20 is provided with anti-slip texture 221. When the rotating member 10 rotates to the first angle, the anti-slip texture 221 presses against the side wall of the flexible member. The anti-slip texture 221 can increase the friction between the tensioning member 20 and the flexible member and improve the stability during tensioning.

[0051] For example, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the rotating tensioning mechanism includes two tensioning members 20, and the rotating member 10 includes two sets of first pressure-applying parts 11 and second pressure-applying parts 12. The two tensioning members 20 are distributed at intervals along the circumference of the rotating member 10, and the two sets of first pressure-applying parts 11 and second pressure-applying parts 12 are arranged at intervals around the circumference of the rotating member 10. Each set of first pressure-applying parts 11 and second pressure-applying parts 12 corresponds to one tensioning member 20. The two tensioning members 20 can simultaneously press against the flexible member, improving the stability of the tensioning action.

[0052] For example, such as Figure 1 , Figure 5 and Figure 6 As shown, the rotating tensioning mechanism also includes a connecting rod 30, which is inserted into the connecting ring 213. Specifically, the connecting ring 213 has a through-hole 23 located between the first side 21 and the second side, through which the connecting rod 30 passes and is fixed. Specifically, the connecting hole 23 is a circular hole structure, and the connecting rod 30 is a matching circular rod structure. One end of the connecting rod 30 has a first connecting piece 32, and a limiting ring 31 is fitted and fixed on the connecting rod 30. The first connecting piece 32 and the limiting ring 31 are located at opposite ends of the connecting ring 213 along the axial direction of the connecting hole 23, thereby fixing the connecting rod 30 to the tensioning member 20. Through the connecting rod 30, the tensioning member 20 can be connected to a mounting and fixing structure (such as a base) to assist in the fixed installation of the tensioning member 20.

[0053] For example, such as Figure 1 As shown, the rotating tensioning mechanism also includes a mounting plate 40, to which the connecting rod 30 is inserted and connected. The mounting plate 40 is used to mount the tensioning member 20's mounting and fixing structure (such as a base). Specifically, a second connecting plate 41 is provided at the other end of the connecting rod 30, and the connecting rod 30 is fixed to the mounting plate 40 through the second connecting plate 41.

[0054] For example, such as Figure 1 , Figure 5 and Figure 6As shown, the rotating tensioning mechanism also includes a mounting base 50, which is connected to the rotating member 10. On one hand, the rotating member 10 is fixedly mounted via the mounting base 50; on the other hand, rotating the mounting base 50 drives the rotating member 10 to rotate relative to the tensioning member 20. In this embodiment, the rotation of the rotating member 10 is manually driven. The mounting base 50 is fixed to the bottom end of the rotating member 10 with screws, and the rotating member 10 is rotatably mounted on the housing. The user can rotate the rotating member 10 by screwing it. In some embodiments, the rotation of the rotating member 10 can also be electrically driven. The mounting base 50 is connected to an electric drive component such as a rotary motor or rotary cylinder to achieve automated switching of the tension state.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A rotary tensioning mechanism, characterized in that, include: Rotating component (10), the rotating component (10) rotates along a preset axis; Tensioner (20) having a first side (21) facing the rotating member (10) and a second side (22) away from the rotating member (10), the first side (21) having a first end (201) and a second end (202) opposite to each other; When the rotating member (10) rotates toward the first end (201) to a first angle, the rotating member (10) abuts against the first end (201) and disengages from the second end (202), and the tensioning member (20) is in an outward expansion state; When the rotating member (10) rotates toward the second end (202) to the second angle, the rotating member (10) abuts against the second end (202) and disengages from the first end (201), and the tensioning member (20) is in an inward contraction state.

2. The rotary tensioning mechanism according to claim 1, characterized in that, An arc-shaped abutting wall (211), an arc-shaped connecting wall (212), and a connecting ring (213) are provided on the first side surface (21). The arc-shaped abutting wall (211) is formed at the first end (201), and the connecting ring (213) is formed at the second end (202). The two ends of the arc-shaped connecting wall (212) extend to the arc-shaped abutting wall (211) and the connecting ring (213), respectively. When the rotating member (10) rotates toward the arc-shaped abutting wall (211) to a first angle, the rotating member (10) abuts against the arc-shaped abutting wall (211) and disengages from the connecting ring (213); when the rotating member (10) rotates toward the connecting ring (213) to a second angle, the rotating member (10) abuts against the connecting ring (213) and disengages from the arc-shaped abutting wall (211).

3. The rotary tensioning mechanism according to claim 2, characterized in that, The outer wall of the connecting ring (213) is provided with a buckle (214). When the rotating part (10) rotates to the second angle, the rotating part (10) abuts against the force-bearing surface (2141) of the buckle (214).

4. The rotary tensioning mechanism according to claim 3, characterized in that, The angle between the tangent of the force-bearing surface (2141) and the arc-shaped connecting wall (212) is less than or equal to 90°.

5. The rotary tensioning mechanism according to claim 2, characterized in that, The distance between the arc-shaped connecting wall (212) and the second side surface (22) is less than the distance between the arc-shaped abutting wall (211) and the second side surface (22).

6. The rotary tensioning mechanism according to claim 2, characterized in that, The thickness of the arc-shaped connecting wall (212) gradually decreases from the arc-shaped abutting wall (211) toward the connecting ring (213).

7. The rotary tensioning mechanism according to claim 2, characterized in that, The rotating component (10) includes a first pressing part (11) and a second pressing part (12), wherein the first pressing part (11) and the second pressing part (12) are arranged at an angle and extend outward; When the rotating part (10) rotates to the first angle, the first pressure part (11) abuts against the arc-shaped abutting wall (211), and the second pressure part (12) disengages from the connecting ring (213); when the rotating part (10) rotates to the second angle, the second pressure part (12) abuts against the connecting ring (213), and the first pressure part (11) disengages from the arc-shaped abutting wall (211).

8. The rotary tensioning mechanism according to claim 2, characterized in that, Also includes: A connecting rod (30) is provided, one end of which is inserted into the connecting ring (213), and the other end of which is used to connect to the installation and fixing structure of the tensioning member (20).

9. The rotary tensioning mechanism according to claim 8, characterized in that, Also includes: Mounting plate (40), the other end of the connecting rod (30) is inserted into the mounting plate (40), the mounting plate (40) is used to install the mounting and fixing structure of the tensioner (20).

10. The rotary tensioning mechanism according to claim 1, characterized in that, Also includes: Mounting base (50), the end of the rotating member (10) is connected to the mounting base (50), and the mounting base (50) can drive the rotating member (10) to rotate around a preset axis.

Images