阅读说明：本技术 一种星式辊轮离合器 (Star-type roller clutch ) 是由 杨智搏 于 2020-06-29 设计创作，主要内容包括：一种星式辊轮离合器,包括动力输入轴,在动力输入轴的末端固定连接有作为主动盘的星式盘,绕星式盘的外边缘周向均布多个柱状的限位卡槽,在星式盘的左侧同轴设有作为从动盘的辊轮盘,在辊轮盘上与限位卡槽对应处设有多个辊轮,在辊轮盘的左侧设有传动机构,在辊轮盘与星式盘之间设有复位机构,传动机构与辊轮盘的圆心处顶接,分离状态,辊轮盘在复位机构的推力作用下与星式盘保持分离状态；连动状态,传动机构推动辊轮盘沿轴向向星式盘方向滑动,使辊轮盘和星式盘自由啮合后连动。通过辊轮盘和星式盘的刚性连接开闭设置,实现转速与动力输入轴同步,无差速损失,单位面积承载扭矩范围广,灵敏度高,结构简单,寿命长,且同时具有降噪防尘等功能。(A star-type roller clutch comprises a power input shaft, wherein a star-type disc serving as a driving disc is fixedly connected to the tail end of the power input shaft, a plurality of columnar limiting clamping grooves are uniformly distributed in the circumferential direction of the outer edge of the star-type disc, a roller disc serving as a driven disc is coaxially arranged on the left side of the star-type disc, a plurality of rollers are arranged on the roller disc and correspond to the limiting clamping grooves, a transmission mechanism is arranged on the left side of the roller disc, a reset mechanism is arranged between the roller disc and the star-type disc, the transmission mechanism is abutted to the circle center of the roller disc, and the roller disc is in a separated state and keeps in a separated state with the star-type disc under the thrust action of the reset mechanism; in the linkage state, the transmission mechanism pushes the roller wheel disc to slide towards the star type disc along the axial direction, so that the roller wheel disc and the star type disc are linked after being freely meshed. Through the rigid connection switching setting of roller wheel dish and star dish, realize that rotational speed and power input shaft are synchronous, no differential loss, the unit area bears the weight of the moment of torsion wide range, and sensitivity is high, simple structure, and is longe-lived, and has functions such as making an uproar dustproof of falling simultaneously.)

1. A star-type roller clutch comprises a power input shaft and is characterized in that a star-type disc serving as a driving disc is fixedly connected to the tail end of the power input shaft, a plurality of columnar limiting clamping grooves are uniformly distributed around the outer edge of the star-type disc in the circumferential direction, a roller disc serving as a driven disc is coaxially arranged on the left side of the star-type disc, a plurality of rollers are arranged on the roller disc and correspond to the limiting clamping grooves, a transmission mechanism is arranged on the left side of the roller disc, a reset mechanism is arranged between the roller disc and the star-type disc, the transmission mechanism is abutted against the circle center of the roller disc, the clutch is in a separation state, and the roller disc and the star-type disc are kept in a separation state under the thrust action of the reset mechanism; in the clutch linkage state, the transmission mechanism pushes the roller wheel disc to slide towards the star type disc along the axial direction, so that the roller wheel disc and the star type disc are linked after being freely meshed.

2. The star roller clutch according to claim 1, wherein a heat dissipating mechanism is provided on the right side of the star plate, the heat dissipating mechanism includes a housing, the housing is rotatably engaged with the power input shaft, the housing is keyed to the roller plate, and fan blades are disposed on the outer circumferential side of the housing.

3. The star roller clutch according to claim 2, wherein the housing includes a housing ring, the housing ring is rotatably engaged with the power input shaft, a protruding edge is provided on an outer edge of the housing ring to the left, a spline groove is provided on an inner side of the protruding edge, the roller disc is slidably connected with an inside of the housing along the spline groove, the housing and the roller disc are slidably connected through the spline to define a closed working cavity, and a proper amount of lubricating oil is injected into the working cavity.

4. The star roller clutch according to claim 3, wherein the spline groove is a spiral groove arranged in an axial direction, and the spiral groove is provided in a direction opposite to a rotational direction of the power input shaft.

5. The star roller clutch according to claim 1, wherein the diameter of the right end of the roller is smaller than the diameter of the left end, the diameter of the right end of the limiting clamping groove is larger than the diameter of the left end, and the limiting clamping groove is matched with the roller.

6. The star roller clutch of claim 1, wherein the rollers are rotationally coupled to the roller disc via a shaft.

7. The star roller clutch according to claim 1, wherein the reset mechanism comprises a pressure spring, the right end of the pressure spring is fixedly connected with the tail end of the power input shaft, and the left end of the pressure spring abuts against the roller disc.

8. The star roller clutch according to claim 7, wherein a cylindrical mounting groove is formed at a distal end of the power input shaft, the pressure spring is provided in the mounting groove, and a cylindrical connecting member is provided at a right center of the roller disc, the connecting member being rotatably coupled to the mounting groove in a fitting manner.

9. The star roller clutch of claim 1, wherein the opening of the limiting slot is provided with a rounded corner.

10. The star-type roller clutch according to claim 1, wherein the transmission mechanism comprises a paraffin wax temperature-sensing bulb, and a push rod of the paraffin wax temperature-sensing bulb is abutted against the roller disc.

Technical Field

The invention relates to the cooling technology of an internal combustion engine and other fields, and particularly discloses a star-type roller clutch.

Background

During the running of the automobile, the thermal condition of the engine is changed due to the change of environmental conditions and operation conditions. Therefore, the cooling intensity of the engine must be adjusted at any time. For example, in hot summer, the engine operates at low speed and under heavy load, and when the temperature of the coolant is high, the fan should rotate at high speed to increase the cooling air volume and enhance the heat dissipation capacity of the radiator; in cold winter, when the temperature of the cooling liquid is low, or when strong head-on wind blows over the radiator when the automobile runs at high speed, the fan continues to work, which is meaningless. Not only consumes engine power, but also generates significant noise.

Therefore, it is important to adjust the cooling intensity of the engine at any time according to the thermal condition of the engine. The provision of a fan clutch between the fan pulley and the cooling fan is one of the methods for achieving such adjustment.

The main function is to combine or cut off the power of the fan to cool the engine water tank in time according to the water temperature change of the engine water tank. A water temperature sensor is arranged in a general engine water tank, when the water temperature is high (higher than 85 degrees or so and set by a manufacturer), a controller collects the high-temperature signal and then outputs an electric control fan relay to be attracted, and then a fan clutch is controlled to work, so that a fan rotates to cool the engine water tank. Ultimately ensuring that the engine temperature is not too high to cause failure.

The optimal working temperature of the water temperature of the engine is 80-90 degrees, and the fan clutch has the effect that the fan stops rotating after the water temperature is lower than 80 degrees, so that heat dissipation is reduced. The heat dissipation is combined when the temperature exceeds a certain temperature. The mechanical trolley is used for a general cart and is electronic.

Notice number is CN 203404279U's utility model discloses a silicon oil fan clutch's initiative board and silicon oil fan clutch thereof belongs to the automobile parts field. The driving plate of the silicone oil fan clutch comprises a driving plate body; the driving plate of the silicone oil fan clutch further comprises braking grooves which are tightly and uniformly arranged on the end faces of the two sides of the driving plate body, and the braking grooves are phi 0.3 multiplied by 0.1. The utility model discloses set up little brake groove at initiative board both sides terminal surface align to grid, reach the purpose that increases the silicon oil adhesive force, solve the not enough problem of initiative board silicon oil adhesive force to improve the meshing rotational speed of fan, guaranteed clutch assembly product quality.

The notice number is: CN 210483868U's utility model discloses a silicon oil fan clutch protecgulum, including the protecgulum body, the protecgulum body is including supporting the closing cap, the temperature sensor tank, the axle mounting hole, the flabellum protective frame, first enhancement solid fixed ring, solid fixed ring is strengthened to the second, stationary blade and fix with screw hole, the axle mounting hole has been seted up to the center department of supporting the closing cap, be provided with the staggered temperature sensor tank of five points along the diameter direction on the supporting closing cap, the fixed flabellum protective frame of edge along circumference of supporting the closing cap, the position department that is close to the supporting closing cap on the flabellum protective frame is provided with the first enhancement solid fixed ring that is used for strengthening fixedly along circumference, the edge of flabellum frame is provided with the second along circumference and strengthens solid fixed ring, the edge of flabellum protective frame is provided with a plurality of stationary blade along circumference, set. The utility model discloses a beneficial effect need not the subsequent processing for can realizing the bimetal temperature sensor tank of direct die-casting assembly, can guarantee the mould life-span, reduce cost, and the temperature sensor tank uniformity is good.

The silicone oil fan clutch disclosed in the above-mentioned reference uses silicone oil as a medium, and utilizes the shear adhesion of silicone oil to transmit torque. The rotation speed of the fan is designed in consideration of the condition that the engine is not overheated when the use condition is the worst, so that the rotation speed of the fan should be controlled within a proper range during the normal running of the vehicle, so that the noise can be reduced and the economy of the engine can be improved. For engine-driven fans, a fan clutch is typically used to control the speed thereof. The clutch is internally sealed with viscous fluid (silicone oil) which transfers torque by virtue of shear viscous force.

However, the silicone oil fan clutch controls the oil outlet switch to throw out the silicone oil through the change of the temperature, the torque is transmitted by utilizing the shear adhesion force of the silicone oil fan clutch, if the shear adhesion force is to be increased, the contact area of the silicone oil needs to be increased, so that the size of the clutch is increased, and the manufacturing cost is higher; and it can not run at full speed according to the rotational speed of the power input shaft, causing waste to the power source. Because the driving disk and the driven disk are bonded and braked by viscosity, the kinetic energy conversion rate is limited by the connection mode, and the kinetic energy of the power input shaft cannot be utilized more; to the control monitoring of temperature, some technical scheme above have disclosed detecting through the relay and controlling out oil, but the relay control cost is higher, is unfavorable for the popularization.

Disclosure of Invention

The invention provides a star-type roller clutch in order to overcome the defects of the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a star running roller clutch, including the power input shaft, at the star dish of the terminal fixedly connected with of power input shaft as the driving disc, around the spacing draw-in groove of a plurality of columns of outward flange circumference equipartitions of star dish, the roller disc as the driven disc is equipped with to the left side is coaxial at star dish, correspond the department with spacing draw-in groove and be equipped with a plurality of running rollers on the roller disc, be equipped with drive mechanism in the left side of roller disc, be equipped with canceling release mechanical system between roller disc and star dish, drive mechanism and roller disc's centre of a circle department top joint, the separation state of this clutch: the roller wheel disc and the star disc are kept in a separated state under the thrust action of the reset mechanism; the clutch linkage state: the transmission mechanism pushes the roller wheel disc to slide along the axial direction to the star type disc direction, so that the roller wheel disc and the star type disc are linked after being freely meshed.

Preferably, the right side cover at the star dish is equipped with heat dissipation mechanism, heat dissipation mechanism includes the casing, casing and power input shaft normal running fit, and casing and running roller dish key-type connection arrange the flabellum at the casing periphery side simultaneously.

Preferably, the machine shell comprises a machine seat ring, the machine seat ring is in rotating fit with the input shaft, a convex edge is arranged on the outer edge of the machine seat ring leftwards, a spline groove is formed in the inner side of the convex edge, the roller wheel disc is in sliding connection with the inner portion of the machine shell along the spline groove, the machine shell and the roller wheel disc are in sliding connection through the spline and then enclose a closed working cavity, and a proper amount of lubricating oil is injected into the working cavity.

Preferably, the spline grooves are helical grooves arranged along the axial direction, and the arrangement direction of the helical grooves is opposite to the rotation direction of the power input shaft.

Preferably, the diameter of the right end of the roller is smaller than that of the left end, the diameter of the right end of the limiting clamping groove is larger than that of the left end, and the limiting clamping groove is matched with the roller.

Preferably, the roller is rotationally connected with the roller disc through a rotating shaft.

Preferably, the reset mechanism comprises a pressure spring, the right end of the pressure spring is fixedly connected with the tail end of the power input shaft, and the left end of the pressure spring is abutted to the roller disc.

Preferably, the tail end of the power input shaft is provided with a cylindrical mounting groove, the pressure spring is arranged in the mounting groove, a cylindrical connecting piece is arranged at the center of the right side of the roller wheel disc, and the connecting piece is matched with the mounting groove to rotate and be connected with the mounting groove.

Preferably, the opening of the limiting clamping groove is provided with a fillet.

Preferably, the transmission mechanism comprises a paraffin temperature sensing bulb, and a push rod of the paraffin temperature sensing bulb is connected with the roller disc in a jacking mode.

The invention has the beneficial effects that:

according to the invention, through the arrangement of the roller wheel disc and the star disc, the roller wheel disc and the star disc are in rigid connection, so that the clutch can control the opening and closing of the heat dissipation mechanism according to different temperature changes, no external source money and pipeline connection control exists, the structure is simple, the maintenance is convenient, the failure rate is low, the economic efficiency is high, the service life of parts is long, the heat dissipation mechanism cannot rotate in winter with lower temperature, and the kinetic energy loss of the device is reduced. Compared with the viscous connection mode of the key silicone oil clutch through silicone oil in the prior art, the rigid connection opening and closing device of the roller wheel disc and the star disc realizes the synchronization of the rotating speed and the power input shaft, has no differential loss, wide bearing torque range in unit area, high sensitivity, simple structure and long service life, and has the functions of noise reduction, dust prevention and the like. Compared with an electromagnetic clutch, the electromagnetic clutch has the advantages of longer service life, low manufacturing cost, simple structure and contribution to market popularization.

Drawings

FIG. 1 is a half sectional view of embodiment 1 of the present invention;

FIG. 2 is a left side view of the star disk of FIG. 1;

FIG. 3 is a schematic perspective view of the roll wheel disc of FIG. 1;

FIG. 4 is a schematic perspective view of the housing of FIG. 1;

FIG. 5 is a schematic view of the assembly of the roller disc and power input shaft of FIG. 1;

FIG. 6 is a left side view of the star plate and housing of FIG. 1;

FIG. 7 is a schematic view of the installation of the roll wheel disk and the star disk of embodiment 2;

FIG. 8 is a left side view of the roller disc of FIG. 7;

fig. 9 is a sectional view a-a in fig. 8.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.