Engine belt drive tensioner

Abstract

The utility model is suitable for the technical field of belt pulley tensioning mechanism, provides an engine belt drive tensioning mechanism, include: the first rotary arm and the second rotary arm are connected in the predetermined position rotation, the first rotary arm and the second rotary arm's front end all are equipped with the tension wheel, the two control groups of the tension of the first rotary arm and the second rotary arm are controlled respectively between the rotation of the first rotary arm and the second rotary arm and are connected, one end of control group is rotationally connected between the first rotary arm and the second rotary arm, the tension of the first rotary arm and the second rotary arm is controlled through the rotation of control group, by this, the utility model discloses a structure that can adjust the direction and tension of tensioning mechanism, ensure that when using, the direction and tension of tensioning mechanism can be adjusted in the mode of adjustment, need not to replace tensioning mechanism, reduce the later cost of tensioning mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of belt pulley tensioning mechanisms, and in particular to an engine belt drive tensioning mechanism. Background Technology

[0002] On the camshaft at the output end of a car engine, the transmission medium is usually a chain. Since the rotation of the camshaft has timing requirements, there are also requirements for the chain on the camshaft. It must always be in the optimal tension state. Therefore, a tensioner specifically designed to tension the timing chain has been developed. Tensioners on the market are generally available in two forms: hydraulic and mechanical. Both of these can automatically adjust the tension of the chain.

[0003] Traditional tensioners have fixed tension angles and directions during use. When it is necessary to adjust the tension force and direction, the tensioning structure must be replaced to adapt to different tension requirements. However, this method of replacement is costly.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this utility model is to provide an engine belt drive tensioning mechanism. This mechanism can be designed with an adjustable structure that allows for adjustment of the direction and tension force of the tensioning mechanism during use, eliminating the need to replace the tensioning mechanism and reducing its long-term costs.

[0006] To achieve the above objectives, this utility model provides an engine belt drive tensioning mechanism, comprising: A first rotating arm and a second rotating arm are rotatably connected to a predetermined position, and tensioning wheels are provided at the front ends of both the first rotating arm and the second rotating arm; Two control groups are rotatably connected between the first rotating arm and the second rotating arm to control the tension of the first rotating arm and the second rotating arm, respectively. One end of each control group is rotatably connected between the first rotating arm and the second rotating arm. By rotating the control group, the tension of the first rotating arm and the second rotating arm is controlled.

[0007] In one embodiment, the tensioning wheel is rotatably connected to the first rotating arm and the second rotating arm via a rotating shaft, and the other end of the control group is rotatably connected to the corresponding rotating shaft.

[0008] In one embodiment, the control group includes: Rotate the control inner rod connected to the rotating shaft; A control outer rod is slidably connected to the outside of the control inner rod. The control outer rod is sleeved on the outside of the control inner rod. A tension spring is provided between the control outer rod and the control inner rod, and the tension spring provides tension to the tension wheel.

[0009] In one embodiment, the front end of the control outer rod is provided with an adjusting member for controlling the initial elastic force of the tension spring. The adjusting member is screwed to the front end of the control outer rod, and the tension spring is disposed between the adjusting member and the control inner rod.

[0010] In one embodiment, the adjusting member includes: A threaded sleeve is screwed to the front end of the control rod, the threaded sleeve extending from the inside of the control rod to the outside of the front end of the control rod; A nut is located at the outer end of the threaded sleeve, and a rotating push plate is rotatably connected to the outer side of the nut. The tension spring is located between the rotating push plate and the control inner rod.

[0011] In one embodiment, the nut has a rotating hole inside, and one side of the rotating push plate has a rotating protrusion that is rotatably connected to the inside of the rotating hole. One end of the tension spring is fixed to the rotating push plate, and the other end is rotatably connected to the control inner rod.

[0012] In one embodiment, the two control rods are rotatably connected to a fixed shaft, which is fixedly connected to a predetermined position on the engine.

[0013] In one embodiment, the inner control rod has a sliding hole inside, and the inner control rod has a sliding post that is slidably connected to the inside of the sliding hole.

[0014] This utility model provides an engine belt drive tensioning mechanism, comprising: The first rotating arm and the second rotating arm are rotatably connected to a predetermined position. The first rotating arm and the second rotating arm are simultaneously rotatably connected to the predetermined position to ensure the normal rotation effect of the first rotating arm and the second rotating arm. The front end of the first rotating arm and the second rotating arm are provided with tensioning pulleys. The engine belt abuts against the corresponding tensioning pulleys to achieve the tensioning effect of the engine belt. Two control groups are rotatably connected between the first and second rotating arms to control the tension of the first and second rotating arms, respectively. These control groups control the first and second rotating arms separately, ensuring the tension of both arms is maintained. One end of each control group is rotatably connected between the first and second rotating arms, ensuring effective connection between the two control groups and the arms. By rotating these control groups, the tension of the first and second rotating arms is controlled, thereby adjusting the direction and magnitude of the tension. In summary, the technical advantage of this invention is that by providing a structure that allows adjustment of the direction and tension of the tensioning mechanism, the direction and tension can be adjusted during use without replacing the mechanism, reducing subsequent costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 yes Figure 2 Enlarged structural diagram of section A; Figure 4 This is a three-dimensional structural diagram of the adjusting component of this utility model; Figure 5 This is a three-dimensional structural diagram of the rotating push plate of this utility model; In the figure, 1-first rotating arm, 2-second rotating arm, 3-mounting hole, 4-tensioning wheel, 5-rotating shaft, 6-control inner rod, 61-sliding column, 7-control outer rod, 71-sliding hole, 8-tensioning spring, 9-adjusting component, 91-nut, 92-rotating hole, 93-screw sleeve, 10-fixed shaft, 11-rotating push plate, 111-rotating convex edge. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0018] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0019] See Figure 1 and Figure 2 This utility model provides an engine belt drive tensioning mechanism, which includes a first rotating arm 1 and a second rotating arm 2 rotatably connected to a predetermined position. The first rotating arm 1 and the second rotating arm 2 are simultaneously rotatably connected to the predetermined position to ensure the normal rotation effect of the first rotating arm 1 and the second rotating arm 2. The front end of the first rotating arm 1 and the second rotating arm 2 are provided with tensioning pulleys 4. The engine belt abuts against the corresponding tensioning pulleys 4, thereby achieving the tensioning effect of the engine belt. The first rotating arm 1 and the second rotating arm 2 are provided with mounting holes 3, so that the first rotating arm 1 and the second rotating arm 2 can be installed on the engine housing. Two control groups are rotatably connected between the first rotating arm 1 and the second rotating arm 2 to control the tension of the first rotating arm 1 and the second rotating arm 2 respectively. The control groups control the first rotating arm 1 and the second rotating arm 2 separately, while ensuring the tension of the first rotating arm 1 and the second rotating arm 2. One end of the control group is rotatably connected between the first rotating arm 1 and the second rotating arm 2 to ensure the connection effect between the two control groups and the first rotating arm 1 and the second rotating arm 2 respectively. By rotating the control groups, the tension of the first rotating arm 1 and the second rotating arm 2 is controlled, thereby realizing the adjustment of the direction and magnitude of the tension.

[0020] In one embodiment, in order to ensure the proper installation of the tensioning wheel 4, the tensioning wheel 4 is rotatably connected to the first rotating arm 1 and the second rotating arm 2 via a rotating shaft 5, so that the belt can be tensioned through the tensioning wheel 4. The other end of the control group is rotatably connected to the corresponding rotating shaft 5, so as to ensure the proper installation of the tensioning wheel 4 and the proper tensioning effect on the belt.

[0021] In this embodiment, a belt groove can be provided on the outside of the tensioning wheel 4 to ensure the alignment of the belt. At the same time, a bearing can be provided between the pulley and the rotating shaft 5 to ensure the synchronous rotation of the pulley and the belt and reduce the frictional loss of the pulley.

[0022] In one exemplary embodiment, to achieve normal provision and adjustment of tension, the control assembly includes: an inner control rod 6 rotatably connected to the rotating shaft 5; and an outer control rod 7 slidably connected to the outside of the inner control rod 6. The tension of the tension wheel 4 on the belt is adjusted by the telescopic characteristics of the inner control rod 6 and the outer control rod 7. The outer control rod 7 is sleeved outside the inner control rod 6. A tension spring 8 is provided between the outer control rod 7 and the inner control rod 6. The tension spring 8 provides tension to the tension wheel 4, ensuring that the tension spring 8 can fully tension the belt during use, while also ensuring belt cushioning and preventing damage to the belt from the tension wheel 4.

[0023] Specifically, in order to adjust the tension, the front end of the control outer rod 7 is provided with an adjusting component 9 to control the initial elastic force of the tension spring 8. The adjusting component 9 is screwed to the front end of the control outer rod 7, and the tension spring 8 is disposed between the adjusting component 9 and the control inner rod 6. By rotating the adjusting component 9, the position of the adjusting component 9 can be adjusted, thereby adjusting the initial position of the tension spring 8 and realizing the adjustment of the tension of the tension wheel 4.

[0024] Further, see Figure 2 , Figure 3 and Figure 4 To prevent damage to the tension spring 8 during the rotational adjustment of the adjusting member 9, the adjusting member 9 can be configured as an assembly, the adjusting member 9 comprising: A screw-in sleeve 93 is screwed to the front end of the control outer rod 7. The screw-in sleeve 93 extends from the inside of the control outer rod 7 to the outside of the front end of the control outer rod 7, ensuring that the position of the screw-in sleeve 93 can be adjusted while the adjusting member 9 rotates, thereby realizing the adjustment of the state of the tension spring 8. The nut 91, located at the outer end of the threaded sleeve 93, facilitates the turning of the adjusting member 9. A rotating push plate 11 is rotatably connected to the outer side of the nut 91. The tension spring 8 is located between the rotating push plate 11 and the control inner rod 6. When the adjusting member 9 is turned, the rotating push plate 11 will not rotate relative to the tension spring 8, thus preventing wear on the tension spring 8 and protecting it.

[0025] Furthermore, in combination Figure 4 and Figure 5 In order to ensure the normal installation of the rotating push plate 11 and the nut 91, the nut 91 is provided with a rotating hole 92 inside. One side of the rotating push plate 11 is provided with a rotating protrusion 111 that is rotatably connected to the inside of the rotating hole 92. One end of the tension spring 8 is fixed on the rotating push plate 11, and the other end is rotatably connected to the control inner rod 6.

[0026] When it is necessary to adjust the tension of the tension wheel 4, the initial elastic force of the tension spring 8 can be adjusted by properly turning the nut 91, thereby adjusting the magnitude of the tension. When it is necessary to adjust the direction of the tension, the position of the rotating push plate 11 can be adjusted by fully rotating the nut 91, so that the pressure of the tension spring 8 is switched to tension, thereby adjusting the internal and external tension of the tension wheel 4 and adjusting the direction of the tension.

[0027] Furthermore, to ensure the connection between the outer control rod 7 and the engine housing, the two outer control rods 7 are rotatably connected to a fixed shaft 10, which is fixedly connected to a predetermined position on the engine. The inner control rod 6 has a sliding hole 71 inside, and a sliding column 61 is slidably connected inside the sliding hole 71 to ensure that the inner control rod 6 and the outer control rod 7 can slide together, thereby realizing the normal supply of tension force to the tension wheel 4.

[0028] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. An engine belt drive tensioning mechanism, characterized in that, include: A first rotating arm and a second rotating arm are rotatably connected to a predetermined position, and tensioning wheels are provided at the front ends of both the first rotating arm and the second rotating arm; Two control groups are rotatably connected between the first rotating arm and the second rotating arm to control the tension of the first rotating arm and the second rotating arm, respectively. One end of each control group is rotatably connected between the first rotating arm and the second rotating arm. By rotating the control group, the tension of the first rotating arm and the second rotating arm is controlled.

2. The engine belt drive tensioning mechanism according to claim 1, characterized in that, The tensioning wheel is rotatably connected to the first and second rotating arms via a rotating shaft, and the other end of the control group is rotatably connected to the corresponding rotating shaft.

3. The engine belt drive tensioning mechanism according to claim 2, characterized in that, The control group includes: Rotate the control inner rod connected to the rotating shaft; A control outer rod is slidably connected to the outside of the control inner rod. The control outer rod is sleeved on the outside of the control inner rod. A tension spring is provided between the control outer rod and the control inner rod, and the tension spring provides tension to the tension wheel.

4. The engine belt drive tensioning mechanism according to claim 3, characterized in that, The front end of the outer control rod is provided with an adjusting component for controlling the initial elastic force of the tension spring. The adjusting component is screwed to the front end of the outer control rod, and the tension spring is disposed between the adjusting component and the inner control rod.

5. The engine belt drive tensioning mechanism according to claim 4, characterized in that, The adjusting element includes: A threaded sleeve is screwed to the front end of the control rod, the threaded sleeve extending from the inside of the control rod to the outside of the front end of the control rod; A nut is located at the outer end of the threaded sleeve, and a rotating push plate is rotatably connected to the outer side of the nut. The tension spring is located between the rotating push plate and the control inner rod.

6. The engine belt drive tensioning mechanism according to claim 5, characterized in that, The nut has a rotating hole inside, and one side of the rotating push plate has a rotating protrusion that is rotatably connected to the inside of the rotating hole. One end of the tension spring is fixed to the rotating push plate, and the other end is rotatably connected to the control rod.

7. The engine belt drive tensioning mechanism according to claim 3, characterized in that, The two control rods are rotatably connected to a fixed shaft, which is fixedly connected to a predetermined position on the engine.

8. The engine belt drive tensioning mechanism according to claim 3, characterized in that, The control inner rod has a sliding hole inside, and the control inner rod has a sliding column that is slidably connected to the inside of the sliding hole.

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