CN209925535U

CN209925535U - Tensioning wheel bearing

Info

Publication number: CN209925535U
Application number: CN201920727874.5U
Authority: CN
Inventors: 何忠潮; 陈伟; 章伟; 彭新波; 潘卫耀
Original assignee: Shangyu Wanli Auto Bearing Co Ltd Shaoxing
Current assignee: Shangyu Wanli Auto Bearing Co Ltd Shaoxing
Priority date: 2019-05-21
Filing date: 2019-05-21
Publication date: 2020-01-10
Anticipated expiration: 2029-05-21

Abstract

The utility model relates to a tension pulley bearing, which comprises an outward-opening wheel, an inner ring body concentrically arranged in the outward-opening wheel, and a retainer arranged between the outward-opening wheel and the inner ring body, wherein the retainer is internally provided with a plurality of installation cavities, steel balls are installed in the installation cavities, sealing sheets are arranged at two ends of the retainer, and a left group of installation cavities and a right group of installation cavities which are circumferentially distributed on the retainer are arranged between the sealing sheets; the peripheral surface of the externally-expanding wheel is inwards sunken to form a ring groove for the transmission piece to be placed in. The stability, the service load and the life of take-up pulley can effectively be increased.

Description

Tensioning wheel bearing

Technical Field

The utility model relates to a bearing field particularly is a take-up pulley bearing.

Background

The belt tensioning device in the existing automobile transmission system mainly comprises a tensioning wheel, a transmission belt and the like, wherein the tensioning wheel is fixed on a tensioning wheel bearing and arranged on the loose edge of the transmission belt to mainly ensure that the transmission belt keeps a certain tensioning force, therefore, the normal work of the automobile transmission system is ensured, the prior automobile tension pulley bearing mainly comprises a bearing outer ring which is wrapped by engineering plastics, the deformation of the bearing outer ring is caused by the non-uniformity of the wrapping and the different expansion coefficients of the bearing outer ring and the outer wrapping engineering plastics, in addition, the current tension wheel only has a row of steel balls on the inner ring of the bearing, and the defects of low bearing capacity, short service life, large deflection angle and poor bearing stability caused by fewer steel balls are overcome.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough of existence among the above-mentioned prior art, the utility model provides a simple structure, it is stable high-efficient, long service life's take-up pulley bearing.

The utility model discloses a tension pulley bearing, including the wheel of opening outward, set up the inner circle body in the wheel of opening outward concentrically, locate the holder between wheel of opening outward and the inner circle body, have a plurality of installation cavities in the holder, install the steel ball in this installation cavity, the holder both ends are equipped with the gasket, and is equipped with the installation cavity that two sets of circumference distribute on the holder about between the gasket; the peripheral surface of the externally-expanding wheel is inwards sunken to form a ring groove for the transmission piece to be placed in.

The technical scheme can be further optimized through the following technical measures:

as further optimization, outer sealing grooves are formed in two ends of the inner side face of the outer expanding wheel, and inner sealing grooves are formed in two ends of the outer side face of the inner ring body.

As a further optimization, the upper part of the sealing sheet extends into the outer sealing groove and is in interference fit with the outer sealing groove.

Preferably, the lower part of the sealing piece is a lip-shaped sealing piece partially extending into the inner sealing groove.

As a further optimization, the inner ring body is cylindrical, and an eccentric hole for passing the mounting shaft and a fastening hole for fixing the bearing are arranged in the inner ring body.

As a further optimization, the eccentric hole is positioned on one side of the inner ring body, and the fastening hole is positioned on the other side of the inner ring body.

As further optimization, the mounting cavities on the two sides of the retainer are arranged in a staggered mode.

Owing to adopted above technical scheme, the utility model discloses following technological effect has been produced:

the utility model has the advantages that the load intensity and the practical stability of the bearing are effectively increased by arranging two rows of steel balls on the retainer; meanwhile, the original engineering plastics peeled off from the bearing outer ring are integrally formed to form the externally-expanding wheel, so that the engineering plastics can be effectively prevented from being separated from the bearing outer ring during working, and the annular groove is used for limiting the transverse movement of the transmission piece.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings which are needed to be used in the embodiments or the technical solutions in the prior art are briefly described as follows:

fig. 1 is a schematic structural diagram in the first embodiment.

Fig. 2 is a left side view of the first embodiment.

Description of reference numerals:

1. an outward expanding wheel; 2. a holder; 3. an inner ring body; 4. an eccentric hole; 5. a fastening hole; 6. a steel ball; 7. and (7) sealing the sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

The first embodiment is as follows:

the utility model discloses a tension pulley bearing as shown in fig. 1 to 2, including the wheel 1 that opens outward, set up the inner circle body 3 in the wheel 1 that opens outward concentrically, locate the holder 2 between wheel 1 that opens outward and the inner circle body 3, have a plurality of installation cavities in the holder 2, install the steel ball 6 in this installation cavity, the both ends of holder 2 are equipped with the gasket 7, and are equipped with the installation cavity that two sets of circumference distribute on holder 2 about between the gasket 7; the peripheral surface of the externally-expanding wheel 1 is inwards sunken to form a ring groove for the transmission belt to be placed in.

It should be noted that there are two holders 2, which are respectively disposed on the left and right sides of the tensioner bearing, each holder 2 is provided with a set of mounting cavities for placing the steel balls 6, and the outer side of each holder 2 is provided with a sealing sheet 7.

In addition, it should be noted that the mounting cavities on both sides of the retainer 2 and the steel balls 6 in the tension pulley bearing are arranged in a staggered manner, so that the rotational stability of the bearing is further increased while the load of the tension pulley bearing is increased.

As shown in fig. 1, two ends of the inner side surface of the outer tension wheel 1 are provided with outer sealing grooves, and two ends of the outer side surface of the inner ring body 3 are provided with inner sealing grooves. The upper part of the sealing sheet 7 extends into the outer sealing groove and is in interference fit with the outer sealing groove. The lower part of the sealing piece 7 is a lip-shaped sealing piece 7 of which the part extends into the inner sealing groove.

It should be noted that, the sealing sheet 7 can effectively isolate the inside and outside of the tensioner bearing, and plays a role in dust prevention and oil isolation, and the lip-shaped arrangement of the lower part of the sealing sheet 7 can play a role in compensating for abrasion, thereby effectively increasing the stability of the tensioner bearing.

As shown in fig. 1, the inner ring body 3 is cylindrical, and an eccentric hole 4 for passing a mounting shaft and a fastening hole 5 for fixing a bearing are formed in the inner ring body 3. The fastening hole 5 is a threaded hole. The eccentric hole 4 is located on one side of the inner ring body 3, the fastening hole 5 is located on the other side of the inner ring body 3, in the practical implementation process, the number of the fastening holes 5 can be increased or decreased according to actual needs, the position of the fastening hole 5 can be changed according to actual needs, and only the tensioning wheel bearing needs to be fixed on a plane to enable the transmission structure to effectively transmit.

It should be noted that, when the transmission belt becomes loose, the transmission belt needs to be tensioned by the tensioning wheel, and in the actual operation process, the screw in the fastening hole 5 needs to be detached first, and then the tensioning wheel bearing rotates around the mounting shaft to tension the transmission belt and then the screw is screwed in the fastening hole 5 to complete the fixation.

The utility model discloses be in the principle, at first will install the axle and pass eccentric orfice 4 as required, rotate the tight pulley bearing afterwards and have passed the drive belt tensioning, pass fastening hole 5 with the screw on this basis and realize the installation. When the tensioning wheel bearing works, the inner ring body 3 is fixed, the outward-opening wheel 1 rotates along with the transmission belt, and the annular groove is formed by sinking downwards, and the flanges are arranged on the two sides of the annular groove, so that the transmission belt cannot slide left and right on the annular groove, in addition, the outward-opening wheel 1 which is integrally arranged can avoid the falling of engineering plastics, and more steel balls 6 can increase the load and the operation stability of the tensioning wheel bearing.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although more use is made herein of the 1. flared wheel; 2. a holder; 3. an inner ring body; 4. an eccentric hole; 5. a fastening hole; 6. a steel ball; 7. sealing disc, etc., without excluding the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A tension pulley bearing is characterized by comprising an outward-opening wheel, an inner ring body concentrically arranged in the outward-opening wheel, and a retainer arranged between the outward-opening wheel and the inner ring body, wherein a plurality of mounting cavities are formed in the retainer, steel balls are mounted in the mounting cavities, sealing sheets are arranged at two ends of the retainer, and a left group of mounting cavities and a right group of mounting cavities which are circumferentially distributed on the retainer are arranged between the sealing sheets; the peripheral surface of the externally-expanding wheel is inwards sunken to form a ring groove for the transmission piece to be placed in.

2. The bearing of claim 1, wherein the outer tension wheel has outer sealing grooves at two ends of an inner side surface thereof, and the inner ring body has inner sealing grooves at two ends of an outer side surface thereof.

3. The bearing of claim 2, wherein the seal segment upper portion extends into and is in interference fit with the outer seal groove.

4. The bearing of claim 2, wherein the seal lower portion is a lip seal extending partially into the inner seal groove.

5. The bearing of claim 2, wherein the inner ring body is cylindrical, and an eccentric hole for passing the mounting shaft and a fastening hole for fixing the bearing are formed in the inner ring body.

6. The bearing of claim 5, wherein the eccentric aperture is located on one side of the inner race body and the fastening aperture is located on the other side of the inner race body.

7. The bearing of claim 1, wherein the mounting cavities on both sides of the cage are offset.