CN214499964U

CN214499964U - Automatic tension wheel for automobile transmission system

Info

Publication number: CN214499964U
Application number: CN202122324930.0U
Authority: CN
Inventors: 邵静峰; 付圣伟; 王雷
Original assignee: Kale Auto Parts Ningbo Co ltd
Current assignee: Kale Auto Parts Ningbo Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2021-10-26
Anticipated expiration: 2031-09-26

Abstract

The utility model relates to the technical field of auto parts, and discloses an automatic tension pulley for an auto transmission system, which comprises a tension pulley body, wherein the tension pulley body comprises a rocker arm, the tension pulley body is connected with an idler mechanism through the rocker arm, the idler mechanism comprises an inner ring arranged on the rocker arm, the inner ring is provided with an outer ring, the outer ring is provided with a lug, and the lug is used for abutting against a transmission belt; the inner ring and the outer ring are both provided with a placing groove, a retainer is arranged in the placing groove, a steel ball is arranged on the retainer, a sealing ring is further arranged in the placing groove, and the sealing ring is used for sealing the placing groove. By the structure, the assembling time is saved, the assembling procedures are reduced, the consistency of parts is improved, the load of the bearing is increased, the clamping stagnation and the clamping death are not easy to occur, in addition, the idler wheel is replaced by the bearing, the abrasion resistance of the idler wheel is greatly improved, and the service life of the tension wheel is prolonged.

Description

Automatic tension wheel for automobile transmission system

Technical Field

The utility model relates to an auto parts technical field specifically is auto transmission system uses automatic tight pulley that rises.

Background

An automatic tension wheel for an automobile transmission system is a belt tension device for the automobile transmission system. The tensioning wheel mainly comprises a fixed shell, a tensioning arm, a wheel body, a torsion spring, a paint moving bearing, a spring, a shaft sleeve and the like, and can automatically adjust the tensioning force according to different tightness degrees of a belt, so that a transmission system is stable, safe and reliable. The tensioning wheel is a quick-wear part of the automobile spare and accessory part, the belt is easy to extend after a long time, the tension of the belt can be automatically adjusted by the automatic tensioning wheel for the automobile transmission system, the belt can run more stably, the noise is low, and slipping can be prevented.

The automatic tension wheel for the automobile transmission system comprises a belt pulley, a rocker arm, a base, a return spring, a hinge shaft and the like. The belt pulley is fixed at the other end of the rocker arm through a bearing and a shaft bolt, and the belt pulley freely rotates around the shaft center. The rocker arm and the return spring are hinged with the base through a hinge shaft. The rocker arm and the base can rotate relatively, and plastic parts such as wear-resistant damping parts are designed among all moving parts, wherein the belt pulley part is also called an idler pulley.

In current automobile transmission system uses automatic tight pulley that rises, the idler needs to make up the installation with the bearing earlier, secondary installation again on the rocking arm, because in this type of components of a whole that can function independently design, the biggest problem just is that the processing part is many, lead to the process complicated, receive factors such as processing method and material to influence, lead to the uniformity of part relatively poor, make the load of bearing diminish on the contrary, the easy dead, the jamming condition of taking place takes place, in addition because the process is complicated, lead to the time extension of processing and assembly, lead to production efficiency to reduce.

Secondly, because the influence of the processing cost of the acceptance gear, its material is mostly: the idler wheels made of plastic materials are generally low in surface hardness and poor in wear resistance, and in addition, the corrosion resistance of the materials is poor, so that the service life of the tensioning wheel assembly, the appearance of the product and the overall service performance are influenced under the corrosion of substances such as lubricating oil and the like.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic tight pulley that rises for car transmission system possesses the beneficial effect with original idler and bearing integration, has solved the idler mentioned in the above-mentioned background art and needs to make up the installation with the bearing is advanced, and on the rocking arm was installed to the secondary again, the uniformity of part is relatively poor, makes the load of bearing diminish on the contrary, takes place the condition emergence of card death, jamming easily, in addition because the process is complicated, lead to the time extension of processing and assembly, lead to the problem that production efficiency reduces.

The utility model provides a following technical scheme: the automatic tensioning wheel for the automobile transmission system comprises a tensioning wheel body, wherein the tensioning wheel body comprises a rocker arm, the tensioning wheel body is connected with an idler wheel mechanism through the rocker arm, the idler wheel mechanism comprises an inner ring arranged on the rocker arm, an outer ring is arranged on the inner ring, a lug is arranged on the outer ring, and the lug is used for abutting against a transmission belt;

the inner ring and the outer ring are both provided with a placing groove, a retainer is arranged in the placing groove, a steel ball is arranged on the retainer, a sealing ring is further arranged in the placing groove, and the sealing ring is used for sealing the placing groove.

As the utility model discloses automobile transmission system is with automatic tight pulley's that rises alternative, wherein: the lug and the outer ring are designed to be integrally formed.

As the utility model discloses automobile transmission system is with automatic tight pulley's that rises alternative, wherein: and the outer ring and the convex block are made of GCr15 bearing steel materials.

As the utility model discloses automobile transmission system is with automatic tight pulley's that rises alternative, wherein: the diameter of the steel ball is increased to 8.731 cm.

As the utility model discloses automobile transmission system is with automatic tight pulley's that rises alternative, wherein: the idler wheel mechanism and the rocker arm are mounted through a screw.

As the utility model discloses automobile transmission system is with automatic tight pulley's that rises alternative, wherein: the lug is further provided with a limiting block, and the limiting block is used for limiting the transmission belt.

As the utility model discloses automobile transmission system is with automatic tight pulley's that rises alternative, wherein: the limiting block is provided with a plurality of heat dissipation holes, gaps are reserved among the plurality of heat dissipation holes, and the heat dissipation holes are obliquely arranged on the limiting block.

The utility model discloses possess following beneficial effect:

1. this automatic tight pulley that rises for car transmission system, through improving original idler and bearing separation design into the fit design of idler mechanism, make idler and bearing combine to be a whole part, need not to install idler and bearing earlier, install on the rocking arm again the secondary, when practicing thrift both assemble duration, also need not to install both erection joint spare again, thereby reduced assembly process has been reached, and the purpose of production efficiency has been improved, adopt the integral type design simultaneously, the uniformity of part has been improved, make bearing load increase, difficult emergence jamming, the card dies the condition of obtaining, furthermore, because the idler is replaced by the bearing, and the surface hardness of bearing is because the influence of its material, be far greater than ordinary idler surface hardness, its wearability has been improved by a wide margin, the life of take-up pulley has been improved.

2. According to the automatic tension wheel for the automobile transmission system, the outer ring and the convex block are made of GCr15 bearing steel materials, and the GCr15 bearing steel is high-carbon chromium bearing steel which is low in alloy content, good in performance and most widely applied. After quenching and tempering, the wear-resistant roller bearing has high and uniform hardness, good wear resistance and high contact fatigue performance, so that after the idler wheel and the bearing are integrated, the roller bearing is made of GCr15 bearing steel, the wear resistance of the idler wheel mechanism is greatly improved compared with the surface hardness of a common idler wheel, the service life of the idler wheel mechanism is longer than that of the common idler wheel, the durability is better, and in addition, the GCr15 bearing steel material is cheaper, and the production cost is favorably controlled.

3. According to the automatic tension wheel for the automobile transmission system, the diameter of a steel ball is increased to 8.731 cm, so that the load capacity of an idler wheel mechanism is improved by 1.5 times compared with that of a common bearing, the rated dynamic load of the idler wheel mechanism is increased to Cor23.2 after the diameter of the steel ball is increased, the rated static load of the idler wheel mechanism is increased to Cr28.5 after the diameter of the steel ball is increased, the load capacity of the bearing is greatly improved, and the idler wheel mechanism is less prone to jamming and deadlocking compared with a common separated idler wheel due to the fact that the load capacity of the bearing is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an explosion diagram of the structure of the present invention.

Fig. 3 is a schematic view of the internal structure of the intermediate idler mechanism of the present invention.

Fig. 4 is a partially enlarged view of fig. 3 at B.

Fig. 5 is a partially enlarged view of a portion a in fig. 1.

In the figure: 1. a tension wheel body; 2. a rocker arm; 3. an idler mechanism; 31. an inner ring; 32. an outer ring; 33. a bump; 34. a placement groove; 35. a holder; 36. a steel ball; 37. a seal ring; 4. a screw; 51. a limiting block; 52. and (4) heat dissipation holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-5, the automatic tension pulley for the automobile transmission system comprises a tension pulley body 1, wherein the tension pulley body 1 comprises a rocker arm 2, the tension pulley body 1 is connected with an idler pulley mechanism 3 through the rocker arm 2, the idler pulley mechanism 3 comprises an inner ring 31 mounted on the rocker arm 2, an outer ring 32 is arranged on the inner ring 31, a bump 33 is arranged on the outer ring 32, and the bump 33 is used for abutting against a transmission belt;

the inner ring 31 and the outer ring 32 are both provided with a placing groove 34, a retainer 35 is arranged in the placing groove 34, a steel ball 36 is arranged on the retainer 35, a sealing ring 37 is further arranged in the placing groove 34, the sealing ring 37 is used for sealing the placing groove 34, and the convex block 33 and the outer ring 32 are designed to be integrally formed.

In this embodiment:

accelerating production: the traditional idler wheel structure is designed to need secondary assembly, in order to improve production efficiency, assembly processes are reduced, the idler wheel mechanism 3 is installed on the rocker arm 2 through the screw rod 4, the idler wheel mechanism 3 comprises the inner ring 31 installed on the rocker arm 2 through the screw rod 4, the outer ring 32 is installed on the inner ring 31, in order to enable the inner ring 31 to conveniently rotate, the placing groove 34 is formed in the inner ring 31, the retainer 35 is arranged in the placing groove 34, the steel ball 36 is installed on the retainer 35, in order to seal the placing groove 34, the sealing ring 37 is further arranged in the placing groove 34, a bearing is not needed to be installed on the idler wheel mechanism 3, connecting pieces between the idler wheel mechanism 3 and the bearing and installation time between the idler wheel mechanism 3 and the bearing are omitted, and therefore the purposes of reducing the assembly processes and improving the production efficiency are achieved.

Example 2

Referring to fig. 1-5, outer ring 32 and projection 33 are made of GCr15 bearing steel.

In this embodiment: the outer ring 32 and the bump 33 are made of GCr15 bearing steel materials, and the hardness of the GCr15 bearing steel can reach 59-64HRC after quenching treatment, so that the wear resistance of the product is effectively improved.

Example 3

Referring to fig. 1-5, the diameter of steel ball 36 is increased to 8.731 cm.

In this embodiment: the diameter of the steel ball 36 is changed to 8.731 cm, the bearing load is increased by 1.5 times after the change, the rated dynamic load Cor23.2 and the rated static load Cr28.5 are realized, and the load capacity of the bearing is greatly improved.

Example 4

Referring to fig. 1-5, the bump 33 is further provided with a limiting block 51, and the limiting block 51 is used for limiting the driving belt.

In this embodiment:

limiting: in order to limit the position of the transmission belt, a limit block 51 is arranged at the edge of the projection 33, and the limit block 51 can limit the transmission belt on the projection 33 and prevent the transmission belt from being separated from the projection 33 in the operation process.

The stopper 51 is provided with a plurality of heat dissipation holes 52, the heat dissipation holes 52 are formed in the stopper 51, gaps are reserved among the plurality of heat dissipation holes 52, and the heat dissipation holes 52 are obliquely formed in the stopper 51.

Heat dissipation: because the belt rotates and can produce the heat, in order to improve the heat dissipation, a plurality of louvres 52 have been seted up to intermittent type on stopper 51, and louvre 52 slope is seted up on stopper 51, makes things convenient for the air inlet.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. Car is automatic tight pulley that rises for transmission system, including take-up pulley body (1), take-up pulley body (1) includes rocking arm (2), take-up pulley body (1) is connected with idler mechanism (3), its characterized in that through rocking arm (2): the idler wheel mechanism (3) comprises an inner ring (31) arranged on the rocker arm (2), an outer ring (32) is arranged on the inner ring (31), a convex block (33) is arranged on the outer ring (32), and the convex block (33) is used for abutting against a transmission belt;

placing grooves (34) are formed in the inner ring (31) and the outer ring (32), a retainer (35) is arranged in the placing grooves (34), a steel ball (36) is arranged on the retainer (35), a sealing ring (37) is further arranged in the placing grooves (34), and the sealing ring (37) is used for sealing the placing grooves (34).

2. The automatic tension roller for the automobile transmission system according to claim 1, wherein: the lug (33) and the outer ring (32) are designed to be integrally formed.

3. The automatic tension roller for the automobile transmission system according to claim 2, wherein: the outer ring (32) and the projection (33) are both made of GCr15 bearing steel materials.

4. The automatic tension roller for the automobile transmission system according to claim 1, wherein: the diameter of the steel ball (36) is 8.731 cm.

5. The automatic tension roller for the automobile transmission system according to claim 1, wherein: the idler wheel mechanism (3) and the rocker arm (2) are mounted through a screw (4).

6. The automatic tension roller for the automobile transmission system according to claim 1, wherein: the bump (33) is further provided with a limiting block (51), and the limiting block (51) is used for limiting the transmission belt.

7. The automatic tension roller for the automobile transmission system according to claim 6, wherein: the heat dissipation holes (52) are formed in the limiting block (51), the heat dissipation holes (52) are formed in the limiting block (51) in a plurality, gaps are reserved among the heat dissipation holes (52), and the heat dissipation holes (52) are formed in the limiting block (51) in an inclined mode.