Automobile tensioning wheel assembly

Abstract

The utility model discloses an automobile tensioning wheel assembly, which relates to the technical field of automobile accessories, and comprises a tensioning arm and a support aluminum shell, one end of the support aluminum shell is embedded into one end of the tensioning arm and is rotatably connected with the interior of the tensioning arm, the other end of the tensioning arm is rotatably connected with a plastic tensioning wheel, and the plastic tensioning wheel is connected with the support aluminum shell. An elastic steel wire penetrates through the interior of the support aluminum shell, and clamping mechanisms are arranged between the two ends of the elastic steel wire and the tensioning arm and between the two ends of the elastic steel wire and the support aluminum shell. An original torsional spring is replaced by the elastic steel wire, friction between the elastic steel wire and the tensioning arm and the support aluminum shell can be reduced, the service life is prolonged, the structure is simpler, and cost is lower. The installation is more convenient, the two ends of the elastic steel wire are connected with the interiors of the support aluminum shell and the tensioning arm in a clamping and limiting mode through the large gear and the small gear respectively, installation is convenient, cost can be saved, the elastic steel wire can be supported through the arranged plastic sleeve, and abrasion of the elastic steel wire can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an automobile tensioner assembly. Background Art

[0002] The automobile tensioner assembly is a belt tensioning device used in the automobile transmission system, and plays a vital role in the function and performance of the engine. The existing automobile tensioner assembly includes a seat spindle, a tensioning arm, an oil-free bearing, a spring, a wheel body, a bearing and a screw. One end of the tensioning arm is rotatably sleeved on the seat spindle, the oil-free bearing is arranged between the seat spindle and the tensioning arm, the spring is arranged between the seat spindle and the tensioning arm, the bearing is installed in the wheel body and fastened to the other end of the tensioning arm through a screw, so that the wheel body touches the belt, and the tensioner bearing can automatically adjust the tension according to the different tightness of the belt, so that the transmission system is stable, safe and reliable.

[0003] The traditional automobile tensioner assembly is powered by a torsion spring or a spring. When in use, the two ends of the torsion spring are often stuck in the mounting holes on the inner wall of the automobile tensioner assembly. After long-term use, not only will the torsion spring fatigue, but it will also cause wear to the automobile tensioner assembly, thereby affecting the normal use of the automobile tensioner assembly. In addition, the torsion spring is located inside the automobile tensioner assembly, which is inconvenient to install. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an automobile tensioner assembly, which solves the problems raised in the background technology.

[0005] To achieve the above purpose, the utility model is implemented through the following technical solutions: an automobile tensioner assembly, including a tensioning arm and a bracket aluminum shell, one end of the bracket aluminum shell is embedded in one end of the tensioning arm and is rotatably connected to the inside of the tensioning arm, the other end of the tensioning arm is rotatably connected to a plastic tensioning wheel, an elastic steel wire runs through the inside of the bracket aluminum shell, a clamping mechanism is provided between the two ends of the elastic steel wire and the tensioning arm and the bracket aluminum shell, and a limiting mechanism is provided between the tensioning arm and the bracket aluminum shell;

[0006] The clamping mechanism includes a large gear fixedly sleeved on one end of the elastic steel wire, a large tooth groove matching with the large gear is opened on the inner wall of one end of the bracket aluminum shell, a small gear is fixedly sleeved on the other end of the elastic steel wire, and a small tooth groove matching with the small gear is opened inside one end of the tensioning arm.

[0007] Preferably, the inner walls of the tensioning arm and the bracket aluminum shell are both embedded with aluminum gaskets that are fixedly connected, and sealant is filled between the aluminum gasket and the adjacent large gear and small gear to play a sealing role and prevent dust from entering.

[0008] Preferably, a plastic sleeve is sleeved on the outer surface of one end of the elastic steel wire located inside the aluminum shell of the bracket to facilitate supporting the torsion steel wire.

[0009] Preferably, a plastic sleeve is sleeved on the outer surface of one end of the bracket aluminum shell located inside the tensioning arm, and the outer surface of the plastic sleeve contacts the inner wall of the tensioning arm, so as to facilitate the supporting connection between the bracket aluminum shell and the tensioning arm.

[0010] Preferably, the outer surface of the aluminum shell of the bracket is provided with a plastic pad in contact with the outer surface of the tensioning arm, and a corrugated pad is provided between the plastic pad and the outer surface of the tensioning arm. The corrugated pad is provided on the outside of the plastic sleeve, can play an elastic support, and has a certain buffering performance.

[0011] Preferably, the limiting mechanism includes a pin that passes through and is slidably connected to the outer surface of the aluminum shell of the bracket, the outer surface of the pin is sleeved with a spring, the outer surface of the tensioning arm is provided with an arc-shaped socket that matches the pin, and the outer surface of the pin is penetrated by a cotter pin to facilitate limiting the position of the tensioning arm.

[0012] Preferably, a plurality of mounting holes are formed on the outer surface of the aluminum shell of the bracket, and protective pins are embedded inside the mounting holes.

[0013] Preferably, a bearing is embedded and fixedly installed on the inner wall of the plastic tension wheel, the inner ring of the bearing is fixedly sleeved on one end of the tensioning arm, and the outer surface of the plastic tension wheel is fixedly covered with a dust cover.

[0014] Preferably, one end of the tensioning arm is threadedly connected with a bolt that matches the bearing, and the end of the bolt contacts the inner ring of the bearing.

[0015] The utility model provides an automobile tensioner assembly, which has the following beneficial effects:

[0016] The automobile tensioner assembly, through the provision of elastic steel wire and a clamping mechanism, uses the elastic steel wire to replace the original torsion spring, which can not only reduce the friction between the tensioning arm and the bracket aluminum shell and improve the service life, but also has a simpler structure and is more convenient to install. The two ends of the elastic steel wire are respectively engaged and limitedly connected with the bracket aluminum shell and the inside of the tensioning arm through a large gear and a small gear, and no other fixed structure is required for connection, which is convenient for installation and can save costs. The plastic sleeve provided can support the elastic steel wire and reduce the wear of the elastic steel wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 It is a front view of the utility model.

[0020] In the figure, 1. bolt; 2. plastic tensioner; 3. tensioning arm; 4. large gear; 5. plastic sleeve; 6. plastic pad; 7. elastic steel wire; 8. bracket aluminum shell; 9. protective pin; 10. latch pin; 11. spring; 12. cotter pin; 13. corrugated pad; 14. small gear; 15. aluminum gasket; 16. plastic sleeve; 17. sealant; 18. dust cover; 19. bearing. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Figure 1 and Figure 2 As shown, an automobile tensioner assembly includes a tensioning arm 3 and a bracket aluminum shell 8, one end of the bracket aluminum shell 8 is embedded in one end of the tensioning arm 3 and is rotatably connected to the inside of the tensioning arm 3, the other end of the tensioning arm 3 is rotatably connected to a plastic tensioning wheel 2, an elastic steel wire 7 is passed through the inside of the bracket aluminum shell 8, a clamping mechanism is provided between the two ends of the elastic steel wire 7 and the tensioning arm 3 and the bracket aluminum shell 8, and a limiting mechanism is provided between the tensioning arm 3 and the bracket aluminum shell 8. The elastic steel wire 7 itself has a certain torsion capacity, and by replacing the original torsion spring with the elastic steel wire 7, not only can the friction between the tensioning arm 3 and the bracket aluminum shell 8 be reduced and the service life be improved, but also the structure is simpler and the installation is more convenient.

[0023] The clamping mechanism includes a large gear 4 fixedly sleeved on one end of the elastic steel wire 7, a large tooth groove matching the large gear 4 is provided on the inner wall of one end of the bracket aluminum shell 8, a small gear 14 is fixedly sleeved on the other end of the elastic steel wire 7, and a small tooth groove matching the small gear 14 is provided inside one end of the tensioning arm 3. The two ends of the elastic steel wire 7 are respectively clamped and limitedly connected with the inside of the bracket aluminum shell 8 and the tensioning arm 3 through the large gear 4 and the small gear 14, without the need for other fixed structures for connection, which is convenient for installation and can save costs.

[0024] The inner walls of the tensioning arm 3 and the bracket aluminum shell 8 are both embedded with an aluminum gasket 15 and fixedly connected thereto. Sealant 17 is filled between the aluminum gasket 15 and the adjacent large gear 4 and small gear 14. By filling the sealant 17 on one side of the aluminum gasket 15, the sealing performance on one side of the large gear 4 and the small gear 14 can be increased to prevent dust from entering, thereby increasing the service life.

[0025] The outer surface of one end of the elastic steel wire 7 located inside the bracket aluminum shell 8 is sleeved with a plastic sleeve 16 , and the plastic sleeve 16 can support the elastic steel wire 7 and reduce the wear of the elastic steel wire 7 .

[0026] The outer surface of one end of the bracket aluminum shell 8 located inside the tensioning arm 3 is covered with a plastic sleeve 5, and the outer surface of the plastic sleeve 5 contacts the inner wall of the tensioning arm 3, which can support the position between the bracket aluminum shell 8 and the tensioning arm 3.

[0027] The outer surface of the bracket aluminum shell 8 is sleeved with a plastic pad 6 in contact with the outer surface of the tensioning arm 3, and a corrugated pad 13 is provided between the plastic pad 6 and the outer surface of the tensioning arm 3. The corrugated pad 13 is sleeved on the outside of the plastic sleeve 5, which can play a certain buffering and protective role on the bracket aluminum shell 8 and the tensioning arm 3.

[0028] The limiting mechanism includes a pin 10 that passes through and is slidably connected to the outer surface of the bracket aluminum shell 8. The outer surface of the pin 10 is sleeved with a spring 11. The outer surface of the tensioning arm 3 is provided with an arc-shaped socket that matches the pin 10. The outer surface of the pin 10 is penetrated by a cotter pin 12. When in use, the cotter pin 12 is pulled out, and the pin 10 will automatically enter the arc-shaped socket under the action of the spring 11, thereby limiting the rotation angle of the tensioning arm 3.

[0029] The outer surface of the bracket aluminum shell 8 is provided with a plurality of mounting holes, and protective pins 9 are embedded in the mounting holes to protect the mounting holes when not in use.

[0030] A bearing 19 is embedded and fixedly installed on the inner wall of the plastic tension wheel 2. The inner ring of the bearing 19 is fixedly sleeved on one end of the tension arm 3. The outer surface of the plastic tension wheel 2 is fixedly covered with a dust cover 18 to facilitate dust protection of the bearing 19.

[0031] One end of the tensioning arm 3 is threadedly connected with a bolt 1 that matches the bearing 19, and the end of the bolt 1 contacts the inner ring of the bearing 19 to increase the stability of the bearing 19 and further clamp it.

[0032] Working principle: When in use, install the automobile tensioner assembly to the use position of the automobile through the mounting hole, and then rotate the tensioning arm 3 according to the position of the belt. After adjusting the position, pull out the cotter pin 12, and the latch pin 10 will automatically enter the arc-shaped socket under the action of the spring 11, thereby limiting the rotation angle of the tensioning arm 3. The elastic steel wire 7 itself has a certain torsion ability. Replacing the original torsion spring with the elastic steel wire 7 can not only reduce the friction with the tensioning arm 3 and the bracket aluminum shell 8 and improve the service life, but also have a simpler structure and more convenient installation. The two ends of the elastic steel wire 7 are respectively connected to the bracket aluminum shell 8 and the tensioning arm 3 through the large gear 4 and the small gear 14 for locking and limiting connection. No other fixed structure is required for connection, which is convenient for installation and can save costs. By filling the sealant 17 on one side of the aluminum gasket 15, the sealing of the large gear 4 and the small gear 14 on one side can be increased to prevent dust from entering, thereby improving the service life.

[0033] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automobile tensioner assembly, comprising a tensioning arm (3) and a bracket aluminum shell (8), characterized in that: One end of the bracket aluminum shell (8) is embedded in one end of the tensioning arm (3) and is rotatably connected to the inside of the tensioning arm (3); the other end of the tensioning arm (3) is rotatably connected to a plastic tensioning wheel (2); an elastic steel wire (7) runs through the inside of the bracket aluminum shell (8); a clamping mechanism is provided between the two ends of the elastic steel wire (7) and the tensioning arm (3) and the bracket aluminum shell (8); and a limiting mechanism is provided between the tensioning arm (3) and the bracket aluminum shell (8); The clamping mechanism comprises a large gear (4) fixedly sleeved on one end of the elastic steel wire (7); a large tooth groove matching the large gear (4) is provided on the inner wall of one end of the bracket aluminum shell (8); a small gear (14) is fixedly sleeved on the other end of the elastic steel wire (7); and a small tooth groove matching the small gear (14) is provided inside one end of the tensioning arm (3).

2. The automobile tensioner assembly according to claim 1, characterized in that: An aluminum gasket (15) is embedded and fixedly connected to the inner walls of the tensioning arm (3) and the bracket aluminum shell (8), and a sealant (17) is filled between the aluminum gasket (15) and the adjacent large gear (4) and small gear (14).

3. The automobile tensioner assembly according to claim 1, characterized in that: The outer surface of one end of the elastic steel wire (7) located inside the bracket aluminum shell (8) is sleeved with a plastic sleeve (16).

4. The automobile tensioner pulley assembly according to claim 1, characterized in that: A plastic sleeve (5) is sleeved on the outer surface of one end of the bracket aluminum shell (8) located inside the tensioning arm (3), and the outer surface of the plastic sleeve (5) is in contact with the inner wall of the tensioning arm (3).

5. The automobile tensioner assembly according to claim 4, characterized in that: The outer surface of the bracket aluminum shell (8) is sleeved with a plastic pad (6) in contact with the outer surface of the tensioning arm (3), a corrugated pad (13) is provided between the plastic pad (6) and the outer surface of the tensioning arm (3), and the corrugated pad (13) is sleeved on the outside of the plastic sleeve (5).

6. The automobile tensioner assembly according to claim 1, characterized in that: The limiting mechanism comprises a latch (10) penetrating and slidably connected to the outer surface of the bracket aluminum shell (8), the outer surface of the latch (10) is sleeved with a spring (11), the outer surface of the tensioning arm (3) is provided with an arc-shaped insertion hole matching the latch (10), and the outer surface of the latch (10) is penetrated by a split pin (12).

7. The automobile tensioner assembly according to claim 1, characterized in that: The outer surface of the bracket aluminum shell (8) is provided with a plurality of mounting holes, and protective pins (9) are embedded in the mounting holes.

8. The automobile tensioner assembly according to claim 1, characterized in that: A bearing (19) is embedded and fixedly mounted on the inner wall of the plastic tension wheel (2); the inner ring of the bearing (19) is fixedly sleeved on one end of the tension arm (3); and the outer surface of the plastic tension wheel (2) is fixedly covered with a dust cover (18).

9. The automobile tensioner assembly according to claim 8, characterized in that: One end of the tensioning arm (3) is threadedly connected to a bolt (1) that matches the bearing (19), and the end of the bolt (1) is in contact with the inner ring of the bearing (19).

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