CN116428323A - A New Tension System Attachment Tensioner - Google Patents

Abstract

The invention belongs to the technical field of tensioners, in particular to a novel tensioner for an accessory of a tension system, which comprises a bracket fixedly connected to an engine, wherein a central rotating shaft is arranged at the center of the inner side of the bracket, and a tensioning arm is fixedly connected to the central rotating shaft. According to the invention, the double damping systems are arranged in the tensioner, the first damping system is formed among the tensioning arm, the bolt, the injection-molded spring steel sheet and the bracket, the tension system formed among the tensioning arm and the injection-molded spring steel sheet is a novel tension and damping system, the tension is constant, the damping performance is excellent, the belleville spring, the nylon friction plate, the riveting sheet and the tensioning arm form the second damping system, and the damping of the tensioner is greatly improved due to the design of the double damping systems, so that the swinging of the tensioner can be effectively restrained, the shaking of a belt is restrained, the slipping of the system is also reduced, and the service life of the tensioner is effectively prolonged.

Description

A New Tension System Attachment Tensioner

technical field

The invention relates to the technical field of tensioners, in particular to a novel tensioner for tension system accessories.

Background technique

The automotive engine accessory wheel system drives various accessories through belts, such as: generators, air-conditioning compressors, water pumps, booster pumps, etc. In many automotive accessory systems, it is necessary to provide constant tension to the belt. The spring system can provide a tensioner with tension. There are many types of springs, such as torsion springs, reverse push springs, and scroll springs. At the same time, due to the large angular vibration output by the crankshaft, the power consumption of accessories is large, which will cause abnormal vibration of the belt. , each accessory pulley slips, and the swing amplitude of the tensioner also increases sharply. The fundamental reason is that the damping system is required in the accessory wheel system, for example, the engine vibration damping disc, the generator one-way wheel, etc. These damping systems can be used Reduce the vibration of the system, but because of the single design of these damping components, the damping plate of the engine and the one-way wheel of the generator often only use a single component or component to protect the damping of the tensioner belt, and there is a problem that the damping effect is not good enough. If it is used for a long time, its performance and life cannot be guaranteed. Therefore, the present invention proposes a new type of tension system accessory tensioner to solve this problem in a targeted manner.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a novel tension system accessory tensioner. The inner spring steel sheet is arranged inside the tensioner, and the inner spring steel sheet is compressed during the loading process of the tensioner to generate torque, which can Provide constant tension to the belt. The tension system is simple in structure, low in cost and good in versatility. By setting a double damping system on the tensioner, the design of the double damping system greatly improves the damping effect of the tensioner, thus It can effectively suppress the swing of the tensioner, and then suppress the vibration of the belt, and the system slippage phenomenon will also be reduced accordingly, which solves the problems of unsatisfactory damping effect and short service life caused by the single design of the damping part of the tensioner at the present stage .

(2) Technical solution

The present invention specifically adopts the following technical solutions in order to achieve the above object:

A novel tension system accessory tensioner, including a bracket fixedly connected to the engine, a central rotating shaft is installed at the center of the inner side of the bracket, and a tensioning arm is fixedly connected to the central rotating shaft, the inner side of the tensioning arm and the bracket Injection-molded spring steel sheets are installed at the joints between them. The injection-molded spring steel sheets are fixedly connected to the bracket through bolts. The injection-molded spring steel sheets are located on the inner side of the tension arm block. The nylon bushing on the top, and the inner spring steel sheet located on the inner side of the nylon bushing, wherein the nylon bushing contacts with the stopper inside the tension arm;

It also includes a nylon friction plate arranged between the tension arm and the bracket, and a butterfly spring interposed between the tension arm and the damping plate, wherein the damping plate is sleeved on the central rotating shaft, and the nylon friction plate is between Between the end surface of the tension arm and the end surface of the bracket, a riveting piece is arranged on the central rotating shaft, and one side of the riveting piece is fixedly connected with the damping piece.

Further, the bracket and the central rotating shaft are fixedly connected to the external engine by installing bolts, and the bracket and the engine form an integral body.

Further, a self-lubricating bearing is also provided at the connection between the inner hole of the tension arm and the central rotating shaft.

Further, a belt pulley is rotatably connected to the tension arm, and the belt pulley is tightened on the tension arm by means of locking bolts, and a dust cover is fixedly connected between the belt pulley and the locking bolts.

Further, the position of the bracket corresponding to the pin is provided with a mounting hole adapted to the pin, and the position of the bracket corresponding to the pin is provided with a mounting hole adapted to the pin, and the end of the pin is fixedly connected to the mounting hole of the bracket.

Further, the nylon lining ring and the inner spring steel sheet are both arc-shaped structures, and the end of the nylon lining ring corresponding to the inner spring steel sheet is provided with a card slot, and the inner spring steel sheet is fitted with a clip mounted on the inner side of the nylon lining ring. At the slot, one end of the bolt is fixedly connected to the fixing hole of the nylon bushing, and the nylon bushing is rotatably connected to the bolt.

(3) Beneficial effects

Compared with the prior art, the present invention provides a novel tension system accessory tensioner, which has the following

Beneficial effect:

In the present invention, the inner spring steel sheet is arranged inside the tensioner, and the inner spring steel sheet is compressed during the loading process of the tensioner to generate torque, so that a constant tension can be provided to the belt. The tension system is simple in structure, low in cost, and versatile Well, the inner spring steel sheet is made of high-strength spring steel with low stiffness. During the entire life cycle of the product, the torque variation is small, and the attenuation of the spring is small, so that the system can operate stably. By setting a double damping system on the tension system, the double damping system includes the first damping system composed of injection molded inner spring steel sheets, tension arms, bolts, and housings, and the second damping system composed of disc springs, damping sheets, and riveting sheets. Damping system, the two damping systems are coordinated with each other to realize the damping protection of the tension system, which can ensure the damping effect, effectively avoid a series of problems such as the slipping of the accessory pulley and the reduction of the vibration amplitude of the tensioner, and can also extend the life of the tensioner tension system. The service life and the use effect are good. The tension system formed between the tension arm shell and the injection-molded inner spring steel sheet proposed by the present invention is a new type of tension system with stable tension and can provide constant tension to the belt to ensure that each The effective operation of the accessories is simple in structure and low in cost. The injection molded inner spring steel sheet has good elasticity and good toughness, which can effectively form the torque of the tensioner. The injection molded inner spring steel sheet is composed of a nylon lining and an inner spring steel sheet, making Injection-molded inner spring steel sheet has stronger damping toughness and better protection effect. Among them, the inner inner spring steel sheet is embedded on the inner side of the nylon lining, which is convenient for installation between structures, or injection molding to form a whole; injection-molded inner spring steel sheet The first damping protection system is formed by the bolt, the tensioning arm and the bracket, and the damping protection effect is good. The second damping system is composed of the tensioning arm, the butterfly spring, the damping plate and the riveting plate. Due to the design of the double damping system, the tensioning The damping effect of the tensioner has been greatly improved, so that the swing of the tensioner can be effectively suppressed, and then the vibration of the belt can be suppressed, and the system slipping phenomenon is also reduced. The damping effect is not ideal and the service life is not long.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the side view structure schematic diagram of the present invention;

Fig. 3 is the structural representation when the present invention splits;

Fig. 4 is the structural representation of bracket, injection molded spring steel sheet and tension arm in the present invention;

Fig. 5 is the structural representation of support among the present invention;

Fig. 6 is the structural representation of bracket and injection molded spring steel sheet among the present invention;

Fig. 7 is a schematic structural view of the injection molded spring steel sheet in the present invention.

In the figure: 1. Pulley; 2. Dust cover; 3. Lock bolt; 4. Tension arm; 5. Nylon friction plate; 6. Damping plate; 7. Riveting plate; 8. Belleville spring; 9. Lubricated bearing; 10, central rotating shaft; 11, bracket; 12, injection molded spring steel sheet; 1201, nylon lining ring; 1202, inner spring steel sheet; 13, latch; 14, mounting hole.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 7, a novel tension system accessory tensioner proposed by an embodiment of the present invention includes a bracket 11 fixedly connected to the engine, and the bracket 11 is for tensioning The assembly part of the device realizes the installation and protection of the inner parts. A central shaft 10 is installed at the center of the inner side of the bracket 11. The central shaft 10 is used as the center of rotation and die-casts with the bracket 11 as a whole to realize the rotation of the tension arm 4. It is illustrated that the central rotating shaft 10 is made of stainless steel, and the central rotating shaft 10 is fixedly connected with the tension arm 4 for tension control of the transmission belt. The spring steel sheet 12, through the rotation between the tension arm 4 and the bracket 11, compresses the injection molded spring steel sheet 12 to cause deformation, thereby generating torque and forming a tension system, through which the injection molded spring steel sheet 12 and the tension arm 4 block The friction on the inner side of the block generates frictional force, which acts as a damping protection and reduces the vibration of the tension arm 4. The injection-molded spring steel sheet 12 is fixedly connected to the bracket 11 through the latch 13, so that the injection-molded spring steel sheet 12 is on the bracket 11. The fixed connection to form the first damping system, the injection molded spring steel sheet 12 is installed in the way of the bolt 13, which is convenient and stable, and the injection molded spring steel sheet 12 is located inside the tension arm 4 block to realize the tension arm 4 tension and damping effect, the injection molded spring steel sheet 12 includes a nylon bushing 1201 fixedly connected to the pin 13, and an inner spring steel sheet 1202 located inside the nylon bushing 1201, wherein the nylon bushing 1201 and the tension arm 4 The inner stopper contact, the design method is simple and reasonable, good stability, simple structure, strong reliability, low cost, injection molded spring steel sheet 12 is composed of nylon lining 1201, inner spring steel sheet 1202, good elastic effect, good toughness , the nylon lining 1201 and the inner spring steel sheet 1202 are formed by injection molding of high temperature and friction resistant nylon material and spring steel. During production and processing, the materials are put into the injection mold and molded by injection molding;

It also includes a nylon friction plate 5 arranged between the tension arm 4 and the bracket 11, which plays a role of plane support lubrication, reduces the friction between the tension arm 4 and the bracket 11, and forms a protection, and is placed between the tension arm 4 , the butterfly spring 8 between the damping plates 6, wherein the damping plates 6 are sleeved on the central rotating shaft 10, the nylon friction plate 5 is interposed between the end face of the tension arm 4 and the end face of the bracket 11, and the central rotating shaft 10 is set There is a riveting sheet 7, and one side of the riveting sheet 7 is fixedly connected to the damping sheet 6, and the axial force is provided through the deformation of the belleville spring 8, so that there is a positive pressure between the damping sheet 6 and the tension arm 4, which requires It is explained that when the riveting sheet 7 is pressed into the central rotating shaft 10, the butterfly spring 8 is deformed, a large axial force is generated inside the tensioner, and a large positive pressure is generated between the tensioning arm 4 and the damping sheet 6, When the tension arm 4 rotates relative to the bracket 11, a large frictional force is generated between the damping sheet 6 and the riveting sheet 7, thereby forming a second damping system, which can more effectively restrain the swing of the tension arm 4 and reduce the tension. With less vibration of the belt, the system is more stable.

As shown in Figure 1, in some embodiments, the bracket 11 and the central rotating shaft 10 are fixedly connected to the external engine by means of mounting bolts, and are fixed on the engine by means of mounting bolts to form the installation of the tensioner components, the bracket 11 and the engine form a whole, and the installation is tight.

As shown in Figure 1, in some embodiments, a self-lubricating bearing 9 is also provided at the connection between the inner hole of the tensioning arm 4 and the central shaft 10, and the self-lubricating bearing 9 acts as a self-lubricating effect, reducing the tension between the tensioning arm 4 and the The friction between the central rotating shafts 10 makes the tension arm 4 rotate more smoothly, and the tension arm 4 can rotate around the central rotating shaft 10 to tension the belt.

As shown in Figure 1, in some embodiments, a pulley 1 is rotatably connected to the tensioning arm 4, and the pulley 1 is tightened on the tensioning arm 4 by means of locking bolts 3 to install and fix the pulley 1, and the pulley 1 , Locking bolts 3 are fixedly connected with a dust cover 2, the dust cover 2 can play a dustproof effect, and the belt pulley 1 and the locking bolts 3 are protected.

As shown in Figures 5 and 6, in some embodiments, the bracket 11 is provided with a mounting hole 14 adapted to the pin 13 at the place corresponding to the pin 13, and the end of the pin 13 is fixedly connected to the mounting hole 14 of the bracket 11. The hole 14 is adapted to the end of the bolt 13 to realize the fixed installation of the bolt 13 on the bracket 11 .

As shown in Figure 7, in some embodiments, the nylon lining 1201 and the inner spring steel sheet 1202 are both arc-shaped structures to ensure their elastic effect, and the end of the nylon lining 1201 corresponding to the inner spring steel sheet 1202 is provided with a card. Groove, the inner spring steel sheet 1202 is fit and installed in the card groove inside the nylon lining 1201 to realize the assembly between the nylon lining 1201 and the inner spring steel sheet 1202, which is convenient and stable, and the double setting ensures the injection spring The elastic deformation and damping effect of the steel sheet 12 have good performance, and one end of the bolt 13 is fixedly connected to the fixing hole of the nylon bushing 1201 to realize the fixed connection between the bolt 13 and the injection molded spring steel sheet 12, and the nylon bushing 1201 is rotatably connected with the bolt 13, which can facilitate the rotation of the nylon lining 1201. It should be noted that the inner spring steel sheet 1202 and the nylon lining 1201 can also be injection molded to form a whole to ensure the firmness of the structure.

The working principle and steps of use of the present invention: during assembly, the bracket 11 is fixed on the external engine by means of mounting bolts, the central shaft 10 is assembled at the center of the inner side of the bracket 11, and the central shaft 10 is used as the center of rotation, and is die-cast with the bracket 11. As a whole, the center of the tension arm 4 is fixedly connected to the central rotating shaft 10, so that the tension arm 4 can rotate relative to the bracket 11, and the injection molded spring steel sheet 12 is installed on the inside of the bracket 11, and the outside of the injection molded spring steel sheet 12 Contact with the inner side of the stopper in the tensioning arm 4, through the rotation between the tensioning arm 4 and the bracket 11, the injection-molded spring steel sheet 12 is deformed, thereby generating torque and forming a tension system, when the tensioning arm 4 stopper is twisted , can generate positive pressure on the injection molded spring steel sheet 12, through the transmission of force, finally the injection molded spring steel sheet 12 has a positive pressure on the tension arm 4, when the tension arm 4 and the injection molded spring steel sheet 12 have relative rotation, a The frictional force forms the first damping system, which can suppress the swing of the tension arm 4, while the tension arm 4 rotates around the central shaft 10 to tension the belt, and the nylon friction plate 5 is interposed between the tension arm 4 and the bracket 11 to play To the plane support lubrication, the butterfly spring 8 is interposed between the tension arm 4 and the damping piece 6, and the butterfly spring 8 is deformed to provide an axial force, so that there is a positive pressure between the damping piece 6 and the riveting piece 7, When the tension arm 4 is relatively rotated relative to the bracket 11, frictional force is generated between the damping sheet 6 and the riveting sheet 7 to form damping and restrain the swing of the tension arm 4, so as to play a double damping effect of the tension arm 4, The double damping system has a good protection effect and ensures the stability of the tensioner operation.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. The utility model provides a novel tension system annex tensioning ware, includes support (11) of fixed connection on the engine, its characterized in that: the center rotating shaft (10) is arranged at the center of the inner side of the support (11), the tensioning arm (4) is fixedly connected to the center rotating shaft (10), an injection molding spring steel sheet (12) is arranged at the joint between the inner side of the tensioning arm (4) and the support (11), the injection molding spring steel sheet (12) is fixedly connected to the support (11) through a bolt (13), the injection molding spring steel sheet (12) is positioned on the inner side of a stop block of the tensioning arm (4), the injection molding spring steel sheet (12) comprises a nylon lining ring (1201) fixedly connected to the bolt (13) and an inner spring steel sheet (1202) positioned on the inner side of the nylon lining ring (1201), and the nylon lining ring (1201) is contacted with the stop block on the inner side of the tensioning arm (4);

still including setting up nylon friction disc (5) between tensioning arm (4) and support (11) to and butterfly spring (8) between tensioning arm (4), damping fin (6), wherein, damping fin (6) cover is established on center pivot (10), nylon friction disc (5) are between the terminal surface of tensioning arm (4) and the terminal surface of support (11), be provided with riveting piece (7) on center pivot (10) to one side and damping fin (6) fixed connection of riveting piece (7).

2. A novel tension system accessory tensioner as claimed in claim 1, wherein: the bracket (11) and the central rotating shaft (10) are fixedly connected to an external engine in a mode of mounting bolts, and the bracket (11) and the engine form a whole.

3. A novel tension system accessory tensioner as claimed in claim 1, wherein: the connecting part between the inner hole of the tensioning arm (4) and the central rotating shaft (10) is also provided with a self-lubricating bearing (9).

4. A novel tension system accessory tensioner as claimed in claim 1, wherein: the tensioning arm (4) is rotationally connected with a belt pulley (1), the belt pulley (1) is screwed on the tensioning arm (4) by adopting a locking bolt (3), and a dust cover (2) is fixedly connected between the belt pulley (1) and the locking bolt (3).

5. A novel tension system accessory tensioner as claimed in claim 1, wherein: the mounting hole (14) matched with the bolt (13) is formed in the position, corresponding to the bolt (13), of the bracket (11), and the end part of the bolt (13) is fixedly connected to the mounting hole (14) of the bracket (11).

6. A novel tension system accessory tensioner as claimed in claim 1, wherein: the nylon lining ring (1201) and the inner spring steel sheet (1202) are of arc structures, clamping grooves are formed in the ends, corresponding to the inner spring steel sheet (1202), of the nylon lining ring (1201), the inner spring steel sheet (1202) is embedded and installed at the clamping grooves on the inner side of the nylon lining ring (1201), one end of the bolt (13) is fixedly connected to a fixing hole of the nylon lining ring (1201), and the nylon lining ring (1201) is connected with the bolt (13) in a rotating mode.

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