JP2750799B2 - Method and device for attaching sound-suppressing component to V-ribbed belt - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of attaching a sound-suppressing component to a V-ribbed belt and the like, and to a device for attaching the same to a V-ribbed belt, for example, specifically, a V-shaped member mounted on a pulley provided with a plurality of annular V-grooves. The present invention relates to a method of attaching a sound-suppressing component intensively applied to the tip of a V-rib of a belt in order to suppress a temporary sound generated due to a slip during starting or running of a ribbed belt, and to a device for attaching the same component. .

[0002]

2. Description of the Related Art V using frictional force as a means of power transmission
In the case of a ribbed belt, a V-belt or the like, a V-belt is used to suppress temporary sounding caused by slippage between the belt and the pulley that occurs when the belt is started, suddenly runs with a large moment of inertia, or starts or stops. Various proposals have been made for ribbed belts and the like.

For example, a V-ribbed belt in which the rib portion of a V-ribbed belt is entirely covered with a canvas or a nonwoven fabric (Japanese Utility Model Laid-Open No. 61-140645), a short fiber blended in a rubber portion of a rib portion is exposed on the side surface of the rib. V-ribbed belt protruding (Japanese Patent Application Laid-Open No. 62-113940), V-ribbed belt in which a part of short fibers embedded in a rib portion protrudes from a rib side wall surface, and a powdery viscosity suppressant is attached to the side wall surface. (Japanese Utility Model Laid-Open No. 4-5547).

[0004]

By arranging canvas, non-woven fabric, or short fibers on the surface of the belt rib, the friction coefficient of the belt rib portion is reduced to such an extent that the power transmission capacity of the belt is not hindered. In the initial stage, it is possible to suppress the generation of abnormal noise caused by the slip of the belt to a certain extent, but it has been impossible to expect the permanent effect of this suppression effect.

A V-ribbed belt in which the ribs of the belt are covered with canvas or nonwoven fabric has poor belt flexibility.
Folding mounted on a small-diameter pulley caused great fatigue of the belt, and had a problem in terms of belt life. In addition, a belt in which a powdery viscosity suppressant is attached to the surface of the rib portion of the belt has a remarkable effect in reducing the coefficient of friction at the belt rib portion compared to other belts, but the effect is also permanent. I can't get enough satisfaction in terms of sex,
Problems still remained.

According to the present invention, when the belt is started or running, at the stage of generation of abnormal noise caused by the belt slip phenomenon, a sound generation suppressing component which has relatively little effect on the power transmission capacity of the belt is formed. To supply
It is an object of the present invention to provide a method and an apparatus for attaching a component for suppressing sound generation to a V-ribbed belt or the like which can suppress sound generation of a belt by reducing the friction coefficient of a belt rib portion.

[0007]

In order to achieve the above object, a method of attaching a sound-suppressing component to a V-ribbed belt or the like according to the present invention is provided by fitting into a V-groove provided on a peripheral surface of a pulley. It is in the V-rib part of the belt in the running state,
When an abnormal sound is generated, a sound generation suppressing component is jetted into a closed space formed by a fitting portion between the V groove of the pulley and the V rib of the belt.

Next, in the device for attaching a sound-suppressing component to a V-ribbed belt or the like according to the present invention, a pulley provided with an annular V-groove on its peripheral surface is rotatably mounted on a hollow fixed shaft. the hollow portion is cooperative with pressurized pressure sound suppression component source, supplying pronunciation suppression component which opens towards the mating region portion of the V grooves of the V rib and a pulley of a belt in a fitted state in the hollow fixed shaft mouth, also the bottom of the V-groove of the pulley, ejection hole pronunciation suppression components positionally coincides with the supply port is its
It is characterized by being drilled respectively .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a method of attaching a sound-suppressing component to a V-ribbed belt or the like according to the present invention will be described.
The rib pulley includes a drive pulley, a driven pulley, an idler pulley, and the like. A V-ribbed belt or a V-belt, which is mounted on the V-rib pulley group and has a V-rib portion fitted into the V-groove, is provided with a V-groove of the V-rib pulley and a belt. In the closed space of the V-rib fitting portion, when abnormal noise is generated at the time of slipping of the belt or the like, the power transmission ability by the running of the belt has relatively little influence, and the friction at the rib portion of the belt is relatively small. For the purpose of reducing the coefficient, powdery or liquid fluid sound suppression components, specifically silicone oil, silicone powder, polytetrafluoroethylene powder (trade name Teflon powder)
And the like are spouted and supplied under pressurized conditions. At the initial stage, they are concentrated and supplied to the tip of the V-rib portion of the belt. As the belt travels, the sound suppression component spreads over the entire surface of the belt V-rib. go.

The ejection of the sound-suppressing component is supplied to the tip of the belt V-rib at the time of occurrence of slip sound generated due to the running of the belt or before the running of the belt. Are continuously supplied. The point of supply of the sound suppression component is one of various pulleys constituting a part of the power transmission mechanism, such as a drive pulley, a driven pulley, or an idler pulley.
Alternatively, the processing is performed on a plurality of pulleys as needed.

Next, a specific embodiment of a device for attaching a sound-suppressing component to a V-ribbed belt or the like according to the present invention will be described with reference to the drawings while taking an example of a V-ribbed belt as a power transmission belt having a V-rib. I do. In this device, components of the drive pulley, the driven pulley or the idler pulley can be obtained. FIG. 1 is a cross-sectional view of a sound-suppressing component attaching device according to the present invention, and FIG.
FIG. 3 is an enlarged detail view of a part of FIG. 1.

The present sound-suppressing component attaching apparatus (1) comprises a V-rib pulley (5) provided with a group of V-grooves (6) in a circumferential direction on a hollow fixed shaft (2) having one end closed by an end wall (3). It is rotatable. For example, a pair of flanges (9) and (9) are fixed to both sides of the V-rib pulley (5), and the V-rib pulley (5) is interposed between the flanges (9) and (9) and the hollow fixed shaft (2). It is rotatably supported by bearings (8) and (8).

[0013] Then, the hollow fixed shaft (2), Hamagoryo region part in V-ribbed belt (21) and the pulley of the V-groove which is Kakemaki the V ribbed pulley which is device coaxially (5) (6) To
A slit-shaped sound-suppression component supply port (4) extending in the axial direction is bored and opened , and a slit of the hollow fixed shaft is provided at the bottom of each V-groove (6) of the V-rib pulley (5). At least one sound-suppressing component ejection hole (7) that is in position with the supply port (4) is formed.

A sound-suppressing component supply pipe (10) communicates with one end of the hollow fixed shaft (2), and a pressurized air source (11) is connected to a branch outer end of the pipe (10). ) And a sound-suppressing component supply source (12). Silicone oil, silicon powder, polytetrafluoroethylene powder (trade name, Teflon powder) or the like as the sound-suppressing component is sprayed by pressurized air, and the hollow fixed shaft (2) is rotated by the rotation of the pulley (5). )
The supply port (4) of the nozzle and the ejection port (7) of the pulley (5)
Suppress sound generation in the area where the belt and pulley fit
The components are first supplied intensively to the tip of the V-rib (22) portion of the belt , and the components are supplied over time to the V-rib (2).
2) It is spread and attached to the entire surface.

Next, an air conditioner (A / C)
As a comparative example, in the case of a belt with no sound-suppressing component applied, a brush or the like is used to apply 0.3 g of the component to the entire surface of the V-rib of the belt and 0.15 g of the component only to the tip of the belt V-rib. Using the three types of V-ribbed belts coated and applied, and as an embodiment according to the present invention, with four examples in which 0.15 grams of a component was ejected and adhered only to the tip of the belt V-rib, when the air conditioner was stopped, The situation of abnormal noise generation due to slip in each state at start-up and continuous use was considered.

As shown in FIG. 4, the folding transmission includes a driving pulley (Dr) having a diameter of 135 mm and 6000 rpm, a driven pulley (Dn) having a diameter of 106 mm and 6.6 horsepower (ps) and a driven pulley (Dn) having a diameter of 6.6 horsepower (ps). A 5 mm idler pulley (Ip) group is wrapped with a V-ribbed belt having a circumference of 1100 mm and four ribs, and the belt tension at this time is 7.5 k.
gf / rib. The sound-suppressing component used is silicone oil KF96sp (made by Shin-Etsu Silicon). Under the running conditions described above, the occurrence of slip noise in each case was as shown in Table 1 below.

[0017]

[Table 1]

From the results shown in Table 1, it can be seen that the sound-suppressing component was applied only to the tip of the V-rib with a brush,
When the double amount of the component is applied to the entire surface of the V-rib, the sound generation suppressing effect is also recognized, and the same sound generation suppressing effect is obtained in the embodiment according to the present invention in which a small amount of the component is jetted and adhered to the V-rib tip. Was confirmed to occur.

[0019]

The present invention minimizes the reduction in power transmission capability in the running direction of the belt while minimizing the occurrence of slip noise caused by a large moment of inertia when the belt is started or abnormal noise caused by slip during belt running. The occurrence of noise can be permanently suppressed by dispersively supplying a sound-suppressing component to the V-rib tip of the belt each time it occurs, contributing to the improvement of the surrounding environment. did it.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a sound-suppressing component attaching device embodying the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged detailed view of a part of FIG.

FIG. 4 is a schematic explanatory view of a belt running test device for checking a sound suppression effect.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sound-suppressing component attaching device 2 hollow fixed shaft 4 sound-suppressing component supply port 5 V rib pulley 6 V-groove 7 sound-suppressing component ejection hole 8,8 bearing 10 sound-suppressing component supply pipe 11 pressurized air source 12 sound-suppressing component supply source 21 V ribbed belt

Claims (4)

(57) [Claims] The present invention relates to a V-groove portion of a pulley, which is fitted in a V-groove of a pulley, and suppresses sound generation in a V-rib portion of a belt in a running state when an abnormal noise occurs in a closed space formed by the V-groove and the V-rib portion. A method for attaching a sound-suppressing component to a V-ribbed belt or the like, characterized in that the component is ejected. 2. The method according to claim 1, wherein the sound-suppressing component is composed of any one of silicon oil, silicon powder, and polytetrafluoroethylene powder. 3. A pulley provided with a V-groove is rotatably mounted on a hollow fixed shaft, and a hollow portion of the hollow fixed shaft is connected to a pressurized sound-suppressing component supply source . Pooh
Out of the V-grooves, the fitting area of the belt around which the belt is wound
Min pronunciation inhibiting component feed port opening toward the can, also on the bottom of the V-groove of the pulley, sound suppression is positionally consistent with the supply port
A device for attaching a sound-suppressing component to a V-ribbed belt or the like, characterized in that each component- injection hole is formed. 4. The apparatus for attaching a sound-suppressing component to a V-ribbed belt or the like according to claim 3, wherein the sound-suppressing component is composed of one of silicon oil, silicon powder, and polytetrafluoroethylene powder.