Tensioner for automobile belt

Abstract

The utility model relates to the technical field of tensioners, and discloses a tensioner for an automobile belt, which comprises a swing arm, a connecting shaft is arranged at one end of the swing arm, a shell is arranged at the other end of the swing arm, a torque spring is mounted in the shell, a bearing is mounted on the outer surface of the connecting shaft, and a tensioning wheel is mounted on the outer surface of the bearing. Mounting lug blocks are arranged on the outer surfaces of the swing arms, and limiting assemblies are arranged on the outer surfaces of the tensioning wheels. According to the tensioning device, the mode that the bearing and the tensioning wheel are fixed through a limiting nut is replaced by the arranged limiting assembly, the situation that the bearing and the tensioning wheel move on the connecting shaft when the tensioning device vibrates for a long time is avoided, and the good limiting effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tensioners, in particular to a tensioner for automobile belts. Background Art

[0002] The tensioner acts on the engine's timing belt or timing chain to guide and tighten it, keeping it in the best tension state at all times. It is generally divided into two methods: hydraulic and mechanical. They can automatically adjust the tension of the timing belt and timing chain to keep the timing belt and timing chain at the appropriate tension.

[0003] The utility model patent application document with publication number "CN221462781U" discloses an improved automobile tensioner, which is mainly composed of a swing arm, a connecting shaft and a bearing assembly. This technical solution can guide and absorb the heat generated during the rotation of the bearing through the heat dissipation cavity opened on the outer ring of the bearing and the heat dissipation fins arranged inside the heat dissipation cavity, thereby avoiding excessive temperature inside the bearing, achieving better heat dissipation effect and extending the service life of the bearing.

[0004] The automobile tensioner disclosed in the above document has the following defects: the automobile tensioner installs the bearing and the tensioner wheel on the outer surface of the connecting shaft through a limit nut. When the tensioner vibrates for a long time, the connection between the limit nut and the connecting shaft is likely to loosen, thereby affecting the fixation of the bearing and the tensioner wheel, causing them to move on the connecting shaft, and the practicality is poor.

[0005] It can be seen from this that the existing automobile tensioner does not have a good limiting structure, and it is necessary to improve the existing deficiencies and provide a tensioner for automobile belts. Utility Model Content

[0006] The purpose of the utility model is to provide a tensioner for automobile belts to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a tensioner for automobile belts, comprising a swing arm, one end of the swing arm is provided with a connecting shaft, the other end of the swing arm is provided with a shell, a torque spring is installed inside the shell, a bearing is installed on the outer surface of the connecting shaft, a tensioning wheel is installed on the outer surface of the bearing, a mounting ear block is provided on the outer surface of the swing arm, and a limiting component is provided on the outer surface of the tensioning wheel.

[0009] Furthermore, the limit assembly includes a connecting plate, the outer surface of the swing arm is provided with a connecting plate, the upper surface of the connecting plate is provided with a groove, the inner surface of the groove is provided with a sliding groove, the interior of the groove is provided with a limit plate, the outer surface of the limit plate is provided with a mounting hole, and the interior of the mounting hole is cooperated with and installed with a connecting shaft.

[0010] Furthermore, a chamber is provided on the inner surface of the limit plate, a guide rod is provided inside the chamber, a pull block is slidably connected to the outer surface of the guide rod, two pull blocks are set and symmetrically distributed, a first spring is installed between the two pull blocks, the first spring is sleeved on the outer surface of the guide rod, a through groove is provided on the upper surface of the limit plate, a pull block is slidably connected inside the through groove, a through hole is provided on the outer surface of the limit plate, a limit rod is slidably connected inside the through hole, two limit rods are set and symmetrically distributed, and a pull block is provided at one end of the limit rod.

[0011] Furthermore, both ends of the connection plate are provided with limiting holes, one end of the limiting hole extends to the slide slot, and a limiting rod is installed in the limiting hole.

[0012] Furthermore, a support plate is provided on the outer surface of the connecting plate, a connecting block is provided on the upper surface of the supporting plate, a chamber is provided inside the connecting block, a fixed block is slidably connected inside the chamber, two fixed blocks are set and symmetrically distributed, a second spring is installed between the two fixed blocks, a through groove is provided on the upper surface of the connecting block, a fixed block is slidably connected inside the through groove, one end of the fixed block passes through the connecting block and extends outward, a through opening is provided on the upper surface of the limiting plate, a connecting block is cooperatively installed inside the through opening, and the outer surface of the fixed block abuts against the outer surface of the limiting plate.

[0013] Furthermore, an auxiliary plate is provided on the lower surface of the support plate, and the other end of the auxiliary plate is arranged on the outer surface of the connecting plate.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model replaces the method of fixing the bearing and the tensioner pulley with a limit nut by providing a limit assembly, thereby preventing the bearing and the tensioner pulley from moving on the connecting shaft when the tensioner vibrates for a long time, thereby achieving a better limit effect.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 The overall structure of the utility model is shown in FIG. Figure 3 ;

[0021] Figure 4 This is a cross-sectional view of the limit component structure of the utility model Figure 1 ;

[0022] Figure 5 This is a cross-sectional view of the limit component structure of the utility model Figure 2 ;

[0023] Figure 6 This is a schematic diagram of the structure of the pull block and the limit rod of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 1, swing arm; 101, mounting ear block; 2, connecting shaft; 3, housing; 4, bearing; 5, tensioner; 6, limit assembly; 601, connecting plate; 602, groove; 603, slide groove; 604, limit plate; 605, mounting hole; 606, guide rod; 607, pull block; 608, first spring; 609, limit rod; 6010, limit hole; 6011, support plate; 6012, connecting block; 6013, fixing block; 6014, second spring; 6015, through port; 6016, auxiliary plate. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1 - Figure 6As shown, the utility model is a tensioner for automobile belts, comprising a swing arm 1, one end of the swing arm 1 is provided with a connecting shaft 2, the other end of the swing arm 1 is provided with a housing 3, a torque spring is installed inside the housing 3, a bearing 4 is installed on the outer surface of the connecting shaft 2, a tensioning wheel 5 is installed on the outer surface of the bearing 4, a mounting ear block 101 is provided on the outer surface of the swing arm 1, and a limit assembly 6 is provided on the outer surface of the tensioning wheel 5;

[0028] The limiting assembly 6 replaces the limiting nut to fix the bearing 4 and the tensioner 5, thereby preventing the bearing 4 and the tensioner 5 from moving on the connecting shaft 2 when the tensioner vibrates for a long time, and achieving a better limiting effect;

[0029] The limiting assembly 6 includes a connecting plate 601, the outer surface of the swing arm 1 is provided with the connecting plate 601, the upper surface of the connecting plate 601 is provided with a groove 602, the inner surface of the groove 602 is provided with a slide groove 603, the inner part of the groove 602 is provided with a limiting plate 604, the outer surface of the limiting plate 604 is provided with a mounting hole 605, and the inner part of the mounting hole 605 is matched with the connecting shaft 2;

[0030] A chamber is provided on the inner surface of the limit plate 604, a guide rod 606 is provided inside the chamber, a pull block 607 is slidably connected to the outer surface of the guide rod 606, two pull blocks 607 are set and symmetrically distributed, a first spring 608 is installed between the two pull blocks 607, the first spring 608 is sleeved on the outer surface of the guide rod 606, a through groove is provided on the upper surface of the limit plate 604, the pull block 607 is slidably connected inside the through groove, a through hole is provided on the outer surface of the limit plate 604, a limit rod 609 is slidably connected inside the through hole, two limit rods 609 are set and symmetrically distributed, and a pull block 607 is provided at one end of the limit rod 609;

[0031] Both ends of the connecting plate 601 are provided with a limiting hole 6010, one end of the limiting hole 6010 extends to the slide groove 603, and a limiting rod 609 is installed inside the limiting hole 6010;

[0032] A support plate 6011 is provided on the outer surface of the connecting plate 601, a connecting block 6012 is provided on the upper surface of the supporting plate 6011, a chamber is provided inside the connecting block 6012, a fixed block 6013 is slidably connected inside the chamber, two fixed blocks 6013 are set and symmetrically distributed, a second spring 6014 is installed between the two fixed blocks 6013, a through groove is provided on the upper surface of the connecting block 6012, a fixed block 6013 is slidably connected inside the through groove, one end of the fixed block 6013 passes through the connecting block 6012 and extends outward, a through opening 6015 is provided on the upper surface of the limiting plate 604, the connecting block 6012 is installed in cooperation inside the through opening 6015, and the outer surface of the fixed block 6013 abuts against the outer surface of the limiting plate 604;

[0033] An auxiliary plate 6016 is provided on the lower surface of the supporting plate 6011 , and the other end of the auxiliary plate 6016 is provided on the outer surface of the connecting plate 601 .

[0034] When installing the tensioner, first install the tensioner at the place to be used by installing the ear block 101. When in use, the limit assembly 6 replaces the limit nut to fix the bearing 4 and the tension wheel 5, so as to avoid the movement of the bearing 4 and the tension wheel 5 on the connecting shaft 2 when the tensioner vibrates for a long time, and has a good limit effect. When the bearing 4 and the tension wheel 5 need to be removed from the connecting shaft 2, first remove the tensioner from the place to be used, and squeeze the two pull blocks 607 inward so that the two pull blocks 607 are fixed to the connecting shaft 2. The pull block 607 moves in the chamber opened by the limit plate 604, and the first spring 608 gradually contracts. At the same time, the limit rod 609 gradually disengages from the limit hole 6010, and then the fixing blocks 6013 at both ends of the connecting block 6012 are pressed inward, so that the two fixing blocks 6013 move in the chamber opened by the connecting block 6012, and the second spring 6014 gradually contracts. When the outer surface of the fixing block 6013 is flush with the outer surface of the connecting block 6012, the pull block 607 can be pulled upward, and the tension between the pull block 607 and the fixing block 6012 is cancelled. 3, the first spring 608 and the second spring 6014 are restored to elasticity, the first spring 608 restores its elasticity to push the pull block 607 and the limit rod 609 to reset, so that the outer surface of the limit rod 609 contacts the inner surface of the slide groove 603, and the second spring 6014 restores its elasticity to push the fixed block 6013 to reset, so that the outer surface of the fixed block 6013 contacts the inner surface of the through hole 6015, and then the limit plate 604 can be pulled upwards continuously, so that the limit plate 604 moves upwards, and the connecting shafts are respectively 2 is disengaged from the mounting hole 605, the connecting block 6012 is disengaged from the through opening 6015, the limiting rod 609 slides upward in the slide groove 603, and when the limiting rod 609 is located at one end of the slide groove 603, the limiting plate 604 is rotated outwardly so that the limiting plate 604 rotates axially outward with the limiting rod 609 as the center. When the limiting plate 604 rotates 90°, the limiting plate 604 completely cancels the limiting of the bearing 4 and the tensioner 5, and the bearing 4 and the tensioner 5 can be removed from the connecting shaft 2, thereby achieving the effect of easy disassembly.

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A belt tensioner for an automobile, comprising a swing arm (1), one end of the swing arm (1) being provided with a connecting shaft (2), the other end of the swing arm (1) being provided with a housing (3), a torque spring being installed inside the housing (3), a bearing (4) being installed on the outer surface of the connecting shaft (2), and a tensioning wheel (5) being installed on the outer surface of the bearing (4), characterized in that: The outer surface of the swing arm (1) is provided with a mounting lug (101), and the outer surface of the tensioning wheel (5) is provided with a limiting assembly (6).

2. The automotive belt tensioner according to claim 1, characterized in that: The limit assembly (6) comprises a connecting plate (601), the outer surface of the swing arm (1) is provided with the connecting plate (601), the upper surface of the connecting plate (601) is provided with a groove (602), the inner surface of the groove (602) is provided with a slide groove (603), the interior of the groove (602) is provided with a limit plate (604), the outer surface of the limit plate (604) is provided with a mounting hole (605), and the interior of the mounting hole (605) is cooperatively mounted with a connecting shaft (2).

3. The automotive belt tensioner according to claim 2, characterized in that: The inner surface of the limit plate (604) is provided with a chamber, a guide rod (606) is provided inside the chamber, a pull block (607) is slidably connected to the outer surface of the guide rod (606), two pull blocks (607) are provided and are symmetrically distributed, a first spring (608) is installed between the two pull blocks (607), the first spring (608) is sleeved on the outer surface of the guide rod (606), a through groove is provided on the upper surface of the limit plate (604), and the pull block (607) is slidably connected inside the through groove; A through hole is provided on the outer surface of the limit plate (604), and a limit rod (609) is slidably connected inside the through hole. The limit rods (609) are set to be two and symmetrically distributed, and a pull block (607) is provided at one end of the limit rod (609).

4. The automotive belt tensioner according to claim 2, characterized in that: Both ends of the connection plate (601) are provided with limiting holes (6010), one end of the limiting hole (6010) extends to the slide groove (603), and a limiting rod (609) is installed inside the limiting hole (6010).

5. The automotive belt tensioner according to claim 2, characterized in that: A support plate (6011) is provided on the outer surface of the connecting plate (601), a connecting block (6012) is provided on the upper surface of the supporting plate (6011), a chamber is provided inside the connecting block (6012), a fixing block (6013) is slidably connected inside the chamber, two fixing blocks (6013) are provided and are symmetrically distributed, and a second spring (6014) is installed between the two fixing blocks (6013); A through groove is provided on the upper surface of the connecting block (6012), and a fixing block (6013) is slidably connected inside the through groove. One end of the fixing block (6013) penetrates the connecting block (6012) and extends outward. The upper surface of the limiting plate (604) is provided with a through opening (6015), the interior of the through opening (6015) is fitted with a connecting block (6012), and the outer surface of the fixing block (6013) is in contact with the outer surface of the limiting plate (604).

6. The automotive belt tensioner according to claim 5, characterized in that: An auxiliary plate (6016) is provided on the lower surface of the support plate (6011), and the other end of the auxiliary plate (6016) is arranged on the outer surface of the connecting plate (601).

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