Double-hinge tensioner

Abstract

The utility model relates to the technical field of automobiles, and particularly discloses a double-hinge tensioner which comprises a fixing block, a first guide rod, a first gasket, a first bolt, a compression spring, a second guide rod, a second bolt, a second gasket, a rocker arm, a belt pulley, a bearing, a screw, a dustproof cover, a mandrel, a belleville spring, a first panel, a lining, a second panel and a plug pin. The other end of the compression spring is connected with the rocker arm, the side, located on the compression spring, of the rocker arm is provided with a first hinge, the side, located at the mandrel end, of the rocker arm is provided with a second hinge, and the double-hinge tensioner adopts the cylindrical compression spring to provide tension for the tensioner. The first hinge and the second hinge of the rocker arm are driven by the belt pulley on the rocker arm to rotate, the compression spring extends or compresses to achieve automatic tensioning of the belt, the tensioner can be suitable for application occasions where the axial space of the front end face of an engine is narrow, and the variety of tensioners is enriched.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and particularly relates to a double-hinge tensioner. Background Art

[0002] With the development of the automobile industry, the overall vehicle design is becoming more and more compact, and the installation space reserved for the engine is getting smaller and smaller. The tensioner is installed on the front end face of the engine. When the axial space of the front end face of the engine is limited, a tensioner with a smaller axial space needs to be designed. The double-hinge tensioner can meet the application scenario of a narrow axial space of the engine. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a double-hinge tensioner, which has the advantages of automatic tensioning, etc., and solves the problem that the double-hinge tensioner cannot meet the application scenario of a narrow axial space of the engine.

[0004] A double-hinge tensioner of the utility model comprises a fixed block, a first guide rod, a first gasket, a first bolt, a compression spring, a second guide rod, a second bolt, a second gasket, a rocker arm, a pulley, a bearing, a screw, a dust cover, a core shaft, a disc spring, a first panel, a bushing, a second panel and a pin. One end of the compression spring is connected to the fixed block, and the other end of the compression spring is connected to the rocker arm. The side of the rocker arm where the compression spring is located is the first hinge, and the side of the rocker arm where the core shaft is located is the second hinge. The double-hinge tensioner uses a cylindrical compression spring to provide tension for the tensioner. When the length of the belt changes, the rocker arm is driven by the pulley on the rocker arm to rotate the first hinge and the second hinge of the rocker arm, and the compression spring extends or compresses to realize the automatic tensioning of the belt, which can be applied to the application occasion of a narrow axial space of the front end face of the engine, and enriches the types of tensioners.

[0005] A double-hinge tensioner of the utility model, wherein the fixed block is provided with an installation surface, an installation hole, a positioning boss for the first guide rod installation and a threaded hole. The first guide rod is provided with a hole concentric with the positioning boss of the fixed block. The first guide rod is sleeved on the positioning step of the fixed block. The first guide rod is provided with a pin. The first gasket is connected to the fixed block through the first bolt.

[0006] A double-hinge tensioner of the present utility model, wherein the rocker arm is provided with a first hinge position positioning step, a threaded hole and a second hinge positioning hole, the rocker arm is provided with a pulley mounting positioning step and a threaded hole, the pulley is fixed on the rocker arm pulley positioning step by a screw, the dust cover is placed on one side of the bearing, the second guide rod is provided with a hole concentric with the first hinge position positioning step of the rocker arm, the second guide rod is sleeved on the first hinge position positioning step of the rocker arm, the second guide rod and the rocker arm are fixedly connected by a bolt two and a gasket two, a mandrel, a disc spring, a bushing, a panel one and a panel two are arranged at the second hinge position of the rocker arm, the bushing is placed in the central hole of the second hinge position of the rocker arm, the panel one is placed between the disc spring and the flange surface of the bushing, the mandrel, the disc spring, the panel one, the second hinge position of the rocker arm, the bushing and the panel two are coaxial, and a fixed connection is formed by riveting one side end face of the mandrel of the panel two.

[0007] A double-hinge tensioner of the present utility model, wherein the compression spring is installed between the first guide rod and the second guide rod, the compression spring is a cylindrical compression spring, and the two end faces of the spring need to be ground flat. The tension of the tensioner is provided by the compression spring.

[0008] A double-hinge tensioner of the present utility model, wherein the first guide rod is provided with a chute for installing a pin. For the convenience of installation, the tensioner is in the pin state in the supply state.

[0009] A double-hinge tensioner of the present utility model, wherein the pulley is a plastic wheel and the bearing is a contact seal bearing.

[0010] A double-hinge tensioner of the present utility model, wherein the number of the disc springs is at least one. Two identical bushings are adopted for the tensioner. The bushings are provided with flange structures. The tensioner is installed on the engine through the fixed block mounting hole and the center of the second hinge position of the rocker arm.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. The double-hinge tensioner of the present utility model includes a fixed block, a first guide rod, a gasket one, a bolt one, a compression spring, a second guide rod, a bolt two, a gasket two, a rocker arm, a pulley, a bearing, a screw, a dust cover, a mandrel, a disc spring, a panel one, a bushing, a panel two and a pin. A cylindrical compression spring is adopted to provide tension for the tensioner. One end of the compression spring is connected with the fixed block, and the other end of the compression spring is connected with the rocker arm. The rocker arm on the side of the compression spring is the first hinge, and the rocker arm on the side of the mandrel end is the second hinge. When the length of the belt changes, the first hinge and the second hinge of the rocker arm are driven to rotate by the pulley on the rocker arm, and the compression spring extends or compresses to realize the automatic tensioning of the belt. It can be applied to the application occasions where the axial space at the front end face of the engine is narrow, and enriches the types of tensioners. Description of the Drawings

[0013] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0014] Figure 1 is a perspective view of a double-hinge tensioner of the present utility model;

[0015] Figure 2 is a front view of a double-hinge tensioner of the present utility model;

[0016] Figure 3 is a cross-sectional view of a double-hinge tensioner of the present utility model;

[0017] Figure 4 is a cross-sectional view of the second hinge of a double-hinge tensioner of the present utility model.

[0018] In the figure: 1. fixed block; 2. first guide rod; 3. first gasket; 4. first bolt; 5. compression spring; 6. second guide rod; 7. second bolt; 8. second gasket; 9. rocker arm; 10. pulley; 11. bearing; 12. screw; 13. dust cover; 14. mandrel; 15. disc spring; 16. first panel; 17. bushing; 18. second panel; 19. pin. Detailed implementation manners

[0019] The following will disclose multiple implementation manners of the present utility model with the drawings. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present utility model. That is to say, in some implementation manners of the present utility model, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in a simple schematic manner in the drawings.

[0020] Please refer to Figures 1-4, A double-hinge tensioner of the present utility model includes a fixed block 1, a first guide rod 2, a first gasket 3, a first bolt 4, a compression spring 5, a second guide rod 6, a second bolt 7, a second gasket 8, a rocker arm 9, a pulley 10, a bearing 11, a screw 12, a dust cover 13, a core shaft 14, a disc spring 15, a first panel 16, a bushing 17, a second panel 18 and a pin 19. One end of the compression spring 5 is connected to the fixed block 1, and the other end of the compression spring 5 is connected to the rocker arm 9. The side of the rocker arm 9 where the compression spring 5 is located is the first hinge, and the side of the rocker arm 9 where the core shaft 14 is located is the second hinge. The double-hinge tensioner uses a cylindrical compression spring to provide tension for the tensioner. When the length of the belt changes, the pulley 10 on the rocker arm 9 drives the first hinge and the second hinge of the rocker arm 9 to rotate, and the compression spring 5 extends or compresses to achieve automatic tensioning of the belt, which can be applied to the application scenarios where the axial space at the front end face of the engine is narrow, enriching the types of tensioners.

[0021] The fixed block 1 is provided with an installation surface, an installation hole, a positioning boss for installing the first guide rod 2 and a threaded hole. The first guide rod 2 is provided with a hole concentric with the positioning boss of the fixed block 1. The first guide rod 2 is sleeved on the positioning step of the fixed block 1. The first guide rod 2 is provided with a pin 19, and the first gasket 3 is connected to the fixed block 1 through the first bolt 4.

[0022] The rocker arm 9 is provided with a positioning step for the first hinge position, a threaded hole and a positioning hole for the second hinge. The rocker arm 9 is provided with a positioning step for installing the pulley and a threaded hole. The pulley 10 is fixed on the pulley positioning step of the rocker arm 9 through the screw 12. The dust cover 13 is placed on one side of the bearing 11. The second guide rod 6 is provided with a hole concentric with the positioning step for the first hinge position of the rocker arm 9. The second guide rod 6 is sleeved on the positioning step for the first hinge position of the rocker arm 9. The second guide rod 6 and the rocker arm 9 are fixedly connected through the second bolt 7 and the second gasket 8. At the second hinge position of the rocker arm 9, there are a core shaft 14, a disc spring 15, a bushing 17, a first panel 16 and a second panel 18. The bushing 17 is placed in the central hole at the second hinge position of the rocker arm 9. The first panel 16 is placed between the flange surfaces of the disc spring 15 and the bushing 17. The core shaft 14, the disc spring 15, the first panel 16, the second hinge position of the rocker arm 9, the bushing 17 and the second panel 18 are coaxial, and a fixed connection is formed by riveting one side of the second panel 18 to the end face of the core shaft 14.

[0023] The compression spring 5 is installed between the first guide rod 2 and the second guide rod 6. The compression spring 5 is a cylindrical compression spring, and the two end faces of the spring need to be ground flat. The tension of the tensioner is provided by the compression spring 5.

[0024] The first guide rod 2 is provided with a chute for installing the pin 19. For the convenience of installation, the tensioner is in the state of the pin 19 in the supply state.

[0025] The pulley 10 is a plastic wheel, and the bearing 11 is a contact-type sealed bearing.

[0026] The number of the disc springs 15 is at least one. The tensioner adopts two identical bushings 17 which are provided with flange structures. The tensioner is mounted on the engine through the mounting holes of the fixing block 1 and the center of the second hinge position of the rocker arm 9.

[0027] When the present utility model is in use: The double-hinge tensioner adopts a compression spring 5 to provide tension for the tensioner. One end of the compression spring 5 is connected to the fixing block 1, and the other end of the compression spring 5 is connected to the rocker arm 9. The side of the rocker arm 9 where the compression spring 5 is located is the first hinge, and the side of the rocker arm 9 where the mandrel 14 is located is the second hinge. When the length of the belt changes, the pulley 10 on the rocker arm 9 drives the first hinge and the second hinge of the rocker arm 9 to rotate, and the compression spring 5 elongates or compresses to achieve automatic tensioning of the belt.

[0028] The above are only the embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of the claims of the present utility model.

Claims

1. A double-hinge tensioner, comprising a fixed block (1), a first guide rod (2), a first gasket (3), a first bolt (4), a compression spring (5), a second guide rod (6), a second bolt (7), a second gasket (8), a rocker arm (9), a pulley (10), a bearing (11), a screw (12), a dust cover (13), a mandrel (14), a disc spring (15), a first panel (16), a bushing (17), a second panel (18) and a pin (19), characterized in that: One end of the compression spring (5) is connected to the fixed block (1), and the other end of the compression spring (5) is connected to the rocker arm (9). The side of the rocker arm (9) where the compression spring (5) is located is the first hinge, and the side of the rocker arm (9) where the core shaft (14) is located is the second hinge.

2. The double-hinge tensioner according to claim 1, characterized in that: The fixed block (1) is provided with an installation surface, an installation hole, a positioning boss for installing the first guide rod (2), and a threaded hole. The first guide rod (2) is provided with a hole concentric with the positioning boss of the fixed block (1). The first guide rod (2) is sleeved on the positioning step of the fixed block (1). The first guide rod (2) is provided with a pin (19). The first gasket (3) is connected to the fixed block (1) through a first bolt (4).

3. The double-hinge tensioner according to claim 1, characterized in that: The rocker arm (9) is provided with a positioning step at the first hinge position, a threaded hole, and a second hinge positioning hole. The rocker arm (9) is provided with a positioning step for installing a pulley and a threaded hole. The pulley (10) is fixed on the pulley positioning step of the rocker arm (9) through a screw (12). The dust cover (13) is placed on one side of the bearing (11). The second guide rod (6) is provided with a hole concentric with the positioning step at the first hinge position of the rocker arm (9). The second guide rod (6) is sleeved on the positioning step at the first hinge position of the rocker arm (9). The second guide rod (6) and the rocker arm (9) are fixedly connected through a second bolt (7) and a second gasket (8). A core shaft (14), a disc spring (15), a bushing (17), a first panel (16), and a second panel (18) are arranged at the second hinge position of the rocker arm (9). The bushing (17) is placed in the central hole at the second hinge position of the rocker arm (9). The first panel (16) is placed between the flange surfaces of the disc spring (15) and the bushing (17). The core shaft (14), the disc spring (15), the first panel (16), the second hinge position of the rocker arm (9), the bushing (17), and the second panel (18) are coaxial, and a fixed connection is formed by riveting one side of the second panel (18) to the end face of the core shaft (14).

4. A double-hinged tensioner according to claim 1, characterized in that: The compression spring (5) is installed between the first guide rod (2) and the second guide rod (6). The compression spring (5) is a cylindrical compression spring, and the two end faces of the spring need to be ground flat. The tension of the tensioner is provided by the compression spring (5).

5. A double-hinged tensioner according to claim 1, characterized in that: The first guide rod (2) is provided with a chute for installing the pin (19). For the convenience of installation, the tensioner is in the state of the pin (19) in the supply state.

6. A double hinge tensioner according to claim 1, characterized in that: The pulley (10) is a plastic wheel, and the bearing (11) is a contact-type sealed bearing.

7. A double hinge tensioner according to claim 1, characterized in that: The number of the disc springs (15) is at least one. Two identical bushings (17) are adopted for the tensioner. The bushings (17) have a flange structure. The tensioner is installed on the engine through the installation hole of the fixed block (1) and the central position at the second hinge of the rocker arm (9).

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