A idler

Abstract

The utility model provides a kind of idler, belong to gear technical field.It solves the problem that existing idler is easily extruded adjacent gear to cause gear damage by vibration, and the idler, characterized in that, including gear ring, light axle and support assembly, bearing is equipped on support assembly, bearing is placed on light axle, outer ring is equipped on bearing, and the support assembly is equipped with several reset units, two symmetrical elastic triangular frames are equipped on reset unit, elastic triangular frame is leaf spring, the bottom of elastic triangular frame is equipped with the connecting plate connected, and the connecting plate is equipped with elastic support rod, elastic support rod terminal is movably connected on outer ring, mounting groove is all set up on elastic triangular frame, elastic support rod is placed between mounting groove, elastic triangular frame top is equipped with guide fillet, and the top of the guide fillet is all in outer ring resistance, the utility model has the advantages of anti-vibration, automatic reset.

Description

Technical Field

[0001] This utility model belongs to the field of gear technology, and specifically relates to an idler wheel. Background Technology

[0002] An idler pulley is an auxiliary pulley in mechanical transmission, mainly used to change the direction of rotation, adjust the wheelbase, or tension belts / chains. It does not change the transmission ratio or transmit power; it only serves a transitional or supporting function. They are commonly found in gearboxes, timing systems, conveyor belts, and other devices to ensure smooth and reliable transmission. For example, the tensioner pulley of a bicycle chain and the guide pulley of an engine timing belt are applications of idler pulleys.

[0003] Gears need to have good shock resistance to cope with the unavoidable impacts, vibrations, and dynamic loads in the transmission system. During mechanical operation, gears will generate impact forces due to sudden load changes, speed fluctuations, or external vibrations. If the shock resistance is insufficient, it can easily lead to failure problems such as pitting, spalling, or even tooth breakage. In addition, strong vibrations will also increase noise and energy loss, reduce transmission accuracy, and affect the smoothness and reliability of equipment operation. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a vibration-resistant, automatically resetting idler wheel.

[0005] The objective of this utility model can be achieved through the following technical solution: An idler wheel, characterized in that it includes a gear ring, an optical shaft, and a support assembly. The support assembly is provided with a bearing, which is placed on the optical shaft. The bearing has an outer ring, and the support assembly is provided with several reset units. Each reset unit has two symmetrical elastic triangular frames, which are leaf springs. The bottom of each elastic triangular frame has a connected connecting plate, and the connecting plate has an elastic support rod. The end of the elastic support rod is movably connected to the outer ring. Each elastic triangular frame has a mounting groove, and the elastic support rod is placed between the mounting grooves. The top of each elastic triangular frame has a guide radius, and the top of the guide radius abuts against the outer ring.

[0006] In the aforementioned idler wheel, the elastic support rod is provided with a support rod and a limiting sleeve. A limiting protrusion is provided at one end of the support rod, and the limiting sleeve is provided with a constricted portion. Springs are provided on both sides of the limiting protrusion, and the springs respectively abut against the constricted portion and the bottom of the limiting sleeve.

[0007] In the aforementioned idler gear, the bottom of the connecting plate is provided with several limiting protrusions, which are engaged within the gear ring.

[0008] In one of the aforementioned idler gears, a fan-ring rubber block is provided between the reset units, metal plates are provided on both sides of the fan-ring rubber block, and an elastic tube is provided between the fan-ring rubber block and the gear ring.

[0009] In the aforementioned idler wheel, the outer ring is provided with several limiting round tubes, and the top of the support rod is provided with a rotating shaft, which is placed inside the limiting round tubes.

[0010] In one of the aforementioned idler wheels, the two sides of the reset unit are in contact with each other.

[0011] Compared with existing technologies, this idler gear, by setting up a support component, allows the gear ring to receive more force while keeping the optical axis stationary. It maintains rotation while being eccentric, thereby mitigating the impact and maintaining transmission stability. The elastic deformation and reset capabilities of the elastic triangular frame, elastic support rod, and fan ring rubber block assist the optical axis in returning to the center of the gear ring. The eccentric rotation function can also reduce the impact on the gears when one side of the gear is stuck, thereby increasing the service life of the gears. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the idler wheel.

[0013] Figure 2 This is a schematic diagram of the half-section structure of the idler wheel.

[0014] In the diagram, 1. Limiting protrusion; 2. Limiting round tube; 3. Elastic tube; 4. Support assembly; 5. Elastic support rod; 6. Rotating shaft; 7. Guide fillet; 8. Optical shaft; 9. Bearing; 10. Outer ring; 11. Connecting plate; 12. Elastic triangular frame; 13. Mounting groove; 14. Gear ring; 15. Metal plate; 16. Sector ring rubber block; 17. Reset unit; 18. Limiting frustum; 19. Narrowing part; 20. Support rod; 21. Limiting sleeve; 22. Spring. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figure 1 , Figure 2As shown, this idler wheel includes a gear ring 14, an optical shaft 8, and a support assembly 4. The support assembly 4 has a bearing 9 mounted on the optical shaft 8. The bearing 9 has an outer ring 10. The support assembly 4 also has several reset units 17, each with two symmetrical elastic triangular frames 12. Each elastic triangular frame 12 is a leaf spring, and its bottom has a connecting plate 11. The connecting plate 11 has an elastic support rod 5, the end of which is movably connected to the outer ring 10. Each elastic triangular frame 12 has a mounting groove 13. Placed in the mounting slot 13, the top of the elastic triangular frame 12 is provided with a guide rounded corner 7, and the top of the guide rounded corner 7 abuts against the outer ring 10. When the gear is vibrated, the idler wheel will be squeezed to the other side. However, since the gears at both ends are fixed on the shaft, the idler wheel will adaptively shift to both sides until the squeezing force disappears and returns to normal. The elastic support rod 5 will pull to reset the optical shaft 8 to the center of the gear ring 14. There is a telescopic gap between the elastic triangular frames 12, and the gap gradually decreases. When vibrating, the bearing 9 moves to the space between the elastic triangular frames 12. After the vibration disappears, the triangular frame will squeeze to make it work.

[0017] Preferably, the elastic support rod 5 is provided with a support top rod 20 and a limiting sleeve 21. A limiting frustum 18 is provided at one end of the support top rod 20, and a constriction portion 19 is provided on the limiting sleeve 21. Springs 22 are provided on both sides of the limiting frustum 18. The springs 22 abut against the bottom of the constriction portion 19 and the limiting sleeve 21, respectively. The elastic support rod 5 keeps the smooth rod in the center position through the pulling and support of the springs 22. The elastic support rod 5 also has a limiting function to prevent excessive eccentricity from causing gear transmission failure.

[0018] Preferably, the bottom of the connecting plate 11 is provided with a number of limiting protrusions 1. The limiting protrusions 1 are engaged in the toothed ring 14. By engaging the limiting protrusions 1, the reset unit 17 can ensure that the evenly distributed state control optical axis 8 maintains the center state.

[0019] Preferably, a fan-shaped rubber block 16 is provided between the reset units 17, and metal plates 15 are provided on both sides of the fan-shaped rubber block 16. An elastic tube 3 is provided between the fan-shaped rubber block 16 and the toothed ring 14. The metal plates 15 make the rubber block slide more smoothly. Through the elastic reset of the rubber block, the reset rate is further improved.

[0020] Preferably, the outer ring 10 is provided with a plurality of limiting round tubes 2, and the top of the support rod 20 is provided with a rotating shaft 6, which is placed inside the limiting round tubes 2.

[0021] Preferably, the two sides of the reset unit 17 are in contact with each other, and the mutual squeezing of the reset units 17 will provide an auxiliary force to allow the gear to reset more quickly.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0023] Although this document frequently uses terms such as limiting protrusion 1, limiting round tube 2, elastic tube 3, support assembly 4, elastic support rod 5, rotating shaft 6, guide fillet 7, optical shaft 8, bearing 9, outer ring 10, connecting plate 11, elastic triangular frame 12, mounting groove 13, gear ring 14, metal plate 15, fan ring rubber block 16, reset unit 17, limiting frustum 18, constricted part 19, support top rod 20, limiting sleeve 21, and spring 22, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. An idler wheel, characterized in that, The assembly includes a gear ring (14), an optical axis (8), and a support component (4). The support component (4) is provided with a bearing (9), which is placed on the optical axis (8). The bearing (9) is provided with an outer ring (10). The support component (4) is provided with several reset units (17). The reset units (17) are provided with two symmetrical elastic triangular frames (12). The elastic triangular frames (12) are leaf springs. The bottom of the elastic triangular frames (12) is provided with a connecting plate (11), and the connecting plate (11) is provided with an elastic support rod (5). The end of the elastic support rod (5) is movably connected to the outer ring (10). The elastic triangular frames (12) are provided with mounting grooves (13). The elastic support rod (5) is placed between the mounting grooves (13). The top of the elastic triangular frames (12) is provided with a guide rounded corner (7), and the top of the guide rounded corner (7) abuts against the outer ring (10).

2. An idler wheel according to claim 1, characterized in that, The elastic support rod (5) is provided with a support top rod (20) and a limiting sleeve (21). A limiting protrusion (1) is provided at one end of the support top rod (20). A constricted part (19) is provided on the limiting sleeve (21). Springs (22) are provided on both sides of the limiting protrusion (1). The springs (22) abut against the bottom of the constricted part (19) and the limiting sleeve (21) respectively.

3. An idler wheel according to claim 1, characterized in that, The bottom of the connecting plate (11) is provided with several limiting protrusions (1), and the limiting protrusions (1) are engaged in the toothed ring (14).

4. An idler wheel according to claim 1, characterized in that, The reset unit (17) is provided with a fan ring rubber block (16), and metal plates (15) are provided on both sides of the fan ring rubber block (16). An elastic tube (3) is provided between the fan ring rubber block (16) and the gear ring (14).

5. An idler wheel according to claim 2, characterized in that, The outer ring (10) is provided with several limiting round tubes (2), and the top of the support rod (20) is provided with a rotating shaft (6), which is placed inside the limiting round tubes (2).

6. An idler wheel according to claim 1, characterized in that, The reset unit (17) is in contact with each other on both sides.

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