Automobile tensioning wheel structure capable of being automatically adjusted

Abstract

The utility model relates to the technical field of automobile tensioning wheels, and discloses an automatically adjustable automobile tensioning wheel structure which comprises a bevel gear rotationally connected to the left side wall of a first cavity. The first bevel gears are symmetrically and fixedly connected to the ends, away from the fixing shaft, of the rotating rods and engaged with the bevel gears. The lead screws are symmetrically and fixedly connected to the sides, away from the rotating rod, of the first bevel gears. The fixing blocks are symmetrically connected outside the lead screw in a threaded mode; the fixing grooves are symmetrically formed in the inner side wall of the bearing. A hexagon wrench is inserted into an inner hexagon bolt, the hexagon wrench is rotated, a driving mechanism drives bevel gears to rotate, then multiple first bevel gears rotate at the same time, a fixing block retracts into a first cavity from a fixing groove, at the moment, a bearing and a tensioning wheel slide out of a mounting shaft, and when the tensioning wheel needs to be mounted, the bearing is arranged on the mounting shaft in a sleeving mode; the left end of the bearing abuts against the abutting plate, then the hexagon socket screw is reversely rotated through the hexagon wrench, the fixing block is inserted into the fixing groove, and the bearing and the tensioning wheel are fixed.

Description

Technical Field

[0001] This utility model relates to the field of automotive tensioner technology, specifically to an automatically adjustable automotive tensioner structure. Background Technology

[0002] The tensioner mainly consists of a fixed housing, tensioning arm, wheel body, torsion spring, rolling bearing, and spring bushing. When the engine is running normally, the tensioner will maintain the belt or chain at the appropriate tension through the tensioning force of the coil spring and adjusting bolt, so that the transmission system is stable, safe and reliable.

[0003] The existing automatic adjustable automotive tensioner structure uses a bolt-connected tensioning arm mounting structure. Because the tensioner is installed inside the vehicle body, the bolt pitch is relatively long, making it inconvenient for maintenance personnel to disassemble and replace the tensioner. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an automatically adjustable automotive tensioner structure, which has the advantage of easy disassembly. It solves the problem that existing automotive tensioners are mostly bolted inside the vehicle body, but the interior space of the vehicle body is small, making it inconvenient for operators to remove bolts with long pitches, thus making it difficult to disassemble the tensioner.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatically adjustable automotive tensioner structure, comprising a main body assembly, wherein the main body assembly includes:

[0008] The mounting arm has a mounting shaft fixedly connected to its front side;

[0009] The bearing is disposed outside the mounting shaft;

[0010] A tensioner pulley is disposed on the outer wall of the bearing;

[0011] A fixing assembly is provided on the mounting shaft and the bearing, the fixing assembly including:

[0012] Cavity 1 is formed inside the mounting shaft;

[0013] A bevel gear is rotatably connected to the left side wall of the cavity;

[0014] A fixed shaft is fixedly connected to a right side wall of the cavity;

[0015] The rotating rod is symmetrically and rotatably connected to the outer wall of the fixed shaft;

[0016] A bevel gear one is symmetrically and fixedly connected to the end of the rotating rod away from the fixed shaft, and meshes with the bevel gear;

[0017] A lead screw is symmetrically and fixedly connected to the bevel gear on the side away from the rotating rod;

[0018] A fixed block is symmetrically and threadedly connected to the outside of the lead screw, and a through groove is provided on the mounting shaft for the fixed block to move.

[0019] Fixed grooves are symmetrically formed on the inner sidewall of the bearing;

[0020] A drive mechanism is mounted on the mounting shaft and the bevel gear.

[0021] Preferably, the drive mechanism includes:

[0022] Cavity 2 is formed inside the mounting shaft, and cavity 2 is located to the left of cavity 1;

[0023] One of the rotating shafts is rotatably connected at one end to the right side wall of the second cavity, and extends through the first cavity to be fixedly connected to the bevel gear;

[0024] The second bevel gear is fixedly connected to the other end of the first rotating shaft;

[0025] The second rotating shaft is rotatably connected to the top of the mounting shaft, and the bottom of the second rotating shaft extends through and into the interior of the second cavity.

[0026] The third bevel gear is fixedly connected to the bottom of the second rotating shaft and meshes with the second bevel gear;

[0027] The internal hex bolts are used to fix the top of the second rotating shaft.

[0028] Preferably, an abutment plate is fixedly connected to the outer wall of the mounting shaft, and the abutment plate is located between the internal hexagon bolt and the fixing block.

[0029] Preferably, the fixing block is the same size as the fixing groove.

[0030] Preferably, the outer side wall of the mounting shaft is symmetrically and fixedly connected with guide blocks, and the inner side wall of the bearing is symmetrically provided with guide grooves.

[0031] Preferably, a limiting block is fixedly connected to the outer wall of the fixing block.

[0032] (III) Beneficial Effects

[0033] Compared with the prior art, this utility model provides an automatically adjustable automotive tensioner structure, which has the following advantages:

[0034] This tensioner pulley structure offers the advantage of easy disassembly. When the tensioner pulley needs to be removed, insert a hex wrench into the socket head cap screw and rotate the wrench. The socket head cap screw drives the bevel gears to rotate via the drive mechanism, which in turn causes multiple bevel gears to rotate simultaneously. The fixing block simultaneously disengages from the fixing groove and retracts into the cavity. At this point, the bearing, along with the tensioner pulley, slides off the mounting shaft. When the tensioner pulley needs to be installed, the bearing is fitted onto the mounting shaft so that its left end abuts against the abutment plate. Then, the socket head cap screw is rotated in the opposite direction using a hex wrench, thus achieving the effect of reverse rotation of the bevel gears and the lead screw. The fixing block simultaneously extends outward from the mounting shaft and inserts into the fixing groove, securing the bearing and the tensioner pulley. This solves the problem that existing automotive tensioners are mostly bolted inside the vehicle body, but the limited space inside the vehicle body makes it inconvenient for operators to remove bolts with longer pitches, thus hindering the disassembly of the tensioner pulley. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of this utility model;

[0036] Figure 2 This is a schematic diagram of the bearing and tensioner installation structure in this utility model;

[0037] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of the cavity in this utility model;

[0038] Figure 4 This is a front view cross-sectional structural diagram of the mounting shaft in this utility model.

[0039] In the picture:

[0040] 1. Main body assembly; 11. Mounting arm; 12. Mounting shaft; 13. Bearing; 14. Tensioner wheel;

[0041] 2. Fixing assembly; 21. Bevel gear; 211. Cavity 1; 22. Rotating rod; 221. Fixed shaft; 23. Bevel gear 1; 24. Lead screw; 25. Fixing block; 251. Limiting block; 26. Fixing groove; 27. Drive mechanism; 271. Cavity 2; 272. Rotating shaft 1; 273. Bevel gear 2; 274. Rotating shaft 2; 275. Bevel gear 3; 276. Socket head cap screw;

[0042] 3. Abutment plate; 4. Guide block; 41. Guide groove. Detailed Implementation

[0043] 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 protection scope of the present utility model.

[0044] Example 1

[0045] See Figure 1-4 An automatically adjustable automotive tensioner structure includes a main body assembly 1, which includes: a mounting arm 11 with a mounting shaft 12 fixedly connected to its front side; a bearing 13 disposed outside the mounting shaft 12; and a tensioner 14 disposed on the outer side wall of the bearing 13. A fixing assembly 2 is disposed on the mounting shaft 12 and the bearing 13. The fixing assembly 2 includes: a cavity 211 formed inside the mounting shaft 12; a bevel gear 21 rotatably connected to the left side wall of the cavity 211; a fixing shaft 221 fixedly connected to the right side wall of the cavity 211; and a rotating rod 22. A bevel gear 23 is symmetrically and rotatably connected to the outer wall of the fixed shaft 221; a bevel gear 23 is symmetrically and fixedly connected to the end of the rotating rod 22 away from the fixed shaft 221 and meshes with the bevel gear 21; a lead screw 24 is symmetrically and fixedly connected to the side of the bevel gear 23 away from the rotating rod 22; a fixing block 25 is symmetrically and threadedly connected to the outside of the lead screw 24, and a through groove is provided on the mounting shaft 12 for the fixing block 25 to move; a fixing groove 26 is symmetrically opened on the inner wall of the bearing 13; and a drive mechanism 27 is disposed on the mounting shaft 12 and the bevel gear 21. The drive mechanism 27 includes: a second cavity 271, formed inside the mounting shaft 12, located to the left of the first cavity 211; a first rotating shaft 272, one end of which is rotatably connected to the right side wall of the second cavity 271 and extends through the first cavity 211 to be fixedly connected to the bevel gear 21; a second bevel gear 273, fixedly connected to the other end of the first rotating shaft 272; a second rotating shaft 274, rotatably connected to the top of the mounting shaft 12, the bottom of the second rotating shaft 274 extending through and into the second cavity 271; a third bevel gear 275, fixedly connected to the bottom of the second rotating shaft 274 and meshing with the second bevel gear 273; and an internal hexagon bolt 276, fixedly connected to the top of the second rotating shaft 274. An abutment plate 3 is fixedly connected to the outer wall of the mounting shaft 12, the abutment plate 3 being located between the internal hexagon bolt 276 and the fixing block 25.

[0046] When the tensioner wheel 14 needs to be removed, the worker inserts a hex wrench into the socket head cap screw 276 and rotates the hex wrench. The socket head cap screw 276 drives the bevel gear 21 to rotate through the drive mechanism 27. The socket head cap screw 276 drives the bevel gear 275 to rotate through the second shaft 274. The bevel gear 275 drives the bevel gear 273, which meshes with it, to rotate. The bevel gear 273 drives the bevel gear 21 to rotate through the first shaft 272. When the bevel gear 21 rotates, the multiple bevel gears 23 meshing on the right side rotate simultaneously. The bevel gears 23 drive the lead screw 24 to rotate. The fixing block 25 connected to the external thread of the lead screw 24 simultaneously disengages from the fixing groove 26 and retracts into the cavity 211. At this time, the bearing 13 is no longer restricted by the fixing block 25 and can slide off the mounting shaft 12 along with the tension wheel 14. When the tension wheel 14 needs to be installed, the operator puts the bearing 13 on the mounting shaft 12 so that the left end of the bearing 13 abuts against the abutment plate 3. The abutment plate 3 facilitates the alignment of the fixing block 25 with the fixing groove 26. Rotating the bearing 13 makes the fixing groove 26 located directly above the fixing block 25. At this time, the operator uses a hex wrench to rotate the internal hex bolt 276 in the opposite direction, thereby achieving the effect of the bevel gear 21 and the lead screw 24 rotating in the opposite direction. The fixing block 25 extends outward from the mounting shaft 12 and inserts into the fixing groove 26 to fix the bearing 13 and the tension wheel 14. The ease of disassembling and replacing the tensioner 14 has been increased.

[0047] Example 2

[0048] An auxiliary function has been added based on Embodiment 1.

[0049] See Figure 1-4 The fixing block 25 is the same size as the fixing groove 26. Guide blocks 4 are symmetrically and fixedly connected to the outer wall of the mounting shaft 12, and guide grooves 41 are symmetrically formed on the inner wall of the bearing 13. Limiting blocks 251 are fixedly connected to the outer wall of the fixing block 25.

[0050] The size of the fixing block 25 and the fixing groove 26 prevents the fixing block 25 from wobbling inside the fixing groove 26 when it enters, increasing the stability of the fixing block 25 in fixing the bearing 13 and the tensioning wheel 14. When installing the bearing 12 and the tensioning wheel 14, the operator first aligns the guide groove 41 with the guide block 4, allowing the guide groove 41 to slide outside the guide block 4. Then, when the bearing 13 and the tensioning wheel 14 are slid to the right side wall of the abutment plate 3, the fixing groove 26 is directly above the fixing block 25, facilitating the timely insertion of the fixing block 25 into the fixing groove 26 to fix the bearing 13. When the fixing block 25 extends outward from the mounting shaft 12, the limiting block 251 restricts the movement distance of the fixing block 25, preventing the fixing block 25 from completely detaching from the mounting shaft 12 and affecting the fixing of the bearing 13 and the tensioning wheel 14.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatically adjustable automotive tensioner structure, comprising a main body assembly (1), said main body assembly (1) comprising: The mounting arm (11) has a mounting shaft (12) fixedly connected to its front side. Bearing (13) is disposed outside the mounting shaft (12); Tensioner wheel (14) is disposed on the outer side wall of the bearing (13); The feature is that a fixing component (2) is provided on the mounting shaft (12) and the bearing (13), the fixing component (2) comprising: Cavity 1 (211) is formed inside the mounting shaft (12); A bevel gear (21) is rotatably connected to the left side wall of the cavity (211); A fixed shaft (221) is fixedly connected to the right side wall of the cavity (211); The rotating rod (22) is symmetrically and rotatably connected to the outer wall of the fixed shaft (221); A bevel gear (23) is symmetrically and fixedly connected to one end of the rotating rod (22) away from the fixed shaft (221) and meshes with the bevel gear (21); The lead screw (24) is symmetrically and fixedly connected to the side of the bevel gear (23) away from the rotating rod (22); The fixing block (25) is symmetrically and threadedly connected to the outside of the lead screw (24), and the mounting shaft (12) has a through groove for the fixing block (25) to move. Fixed grooves (26) are symmetrically opened on the inner sidewall of the bearing (13); The drive mechanism (27) is disposed on the mounting shaft (12) and the bevel gear (21).

2. The automatically adjustable automotive tensioner structure according to claim 1, characterized in that: The drive mechanism (27) includes: Cavity 2 (271) is opened inside the mounting shaft (12), and cavity 2 (271) is located to the left of cavity 1 (211); One of the rotating shafts (272) is rotatably connected to the right side wall of the second cavity (271) and extends through the first cavity (211) to be fixedly connected to the bevel gear (21); The second bevel gear (273) is fixedly connected to the other end of the first rotating shaft (272); The second rotating shaft (274) is rotatably connected to the top of the mounting shaft (12), and the bottom of the second rotating shaft (274) extends through and into the interior of the second cavity (271); The third bevel gear (275) is fixedly connected to the bottom of the second rotating shaft (274) and meshes with the second bevel gear (273); The internal hex bolt (276) is fixedly connected to the top of the second rotating shaft (274).

3. The automatically adjustable automotive tensioner structure according to claim 2, characterized in that: An abutment plate (3) is fixedly connected to the outer wall of the mounting shaft (12), and the abutment plate (3) is located between the internal hex bolt (276) and the fixing block (25).

4. The automatically adjustable automotive tensioner structure according to claim 3, characterized in that: The fixing block (25) is the same size as the fixing groove (26).

5. The automatically adjustable automotive tensioner structure according to claim 4, characterized in that: The outer side wall of the mounting shaft (12) is symmetrically and fixedly connected with guide blocks (4), and the inner side wall of the bearing (13) is symmetrically provided with guide grooves (41).

6. The automatically adjustable automotive tensioner structure according to claim 5, characterized in that: The outer wall of the fixed block (25) is fixedly connected to the limiting block (251).

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