KR101034756B1 - A coil-less clutch device of air conditioner compressor for a car - Google Patents

Abstract

The present invention has a simpler structure, less cost burden and convenient assembly, and at the same time, when the overload of the power transmission pulley exceeds the limit torque due to the abnormality of the automotive air conditioner compressor, the power between the compressor and the pulley is automatically cut off more accurately and safely. The present invention relates to a coilless clutch device having a new structure that can completely prevent further mechanical damage caused by the same.

That is, in configuring a coilless clutch of an automotive air conditioner compressor, the back plate (10) having a fixed bearing capacity is fixed to one side of the hub unit (600) coupled to the end of the rotating shaft (400); On the bottom of the back plate 10, the guide plate 20 having one or more torque coupling portions 21 provided therein and the cover plate 30 for bottom support and lower finishing are sequentially provided in the hub unit 600. Tightly fixed with; Between the torque coupling part 21 of the guide plate 20 and the power connection part 700 on the rotary pulley 100, the normal power connection is maintained in the case of less than the limit torque, and the automatic power cut off immediately when the overload is exceeded. And at the same time by connecting the arc spring 40 of the spring material which can be separated and separated automatically by its elasticity.

Back Plate, Plate, Cover Plate, Arc Spring, Retainer Spring

Description

A coil-less clutch device of air conditioner compressor for a car}

The present invention has a simpler structure, less cost burden and convenient assembly, and at the same time, when the overload of the power transmission pulley exceeds the limit torque due to the abnormality of the automotive air conditioner compressor, the power between the compressor and the pulley is automatically cut off more accurately and safely. The present invention relates to a coilless clutch device of a new structure that can completely prevent further mechanical damage (belt breakage, engine power loss, noise generation, etc.) caused by the engine.

A coilless clutch of an air conditioner compressor for a vehicle is a power connecting clutch device that connects power between an engine of an automobile and an air conditioner installed in the vehicle.At the same time, an overload exceeding a limit torque occurs due to an irreversible tooth area abnormality of the compressor. When the rotation of the compressor shaft is stopped, the power connected to the compressor is cut off immediately, preventing damage to the belt and the noise of the pulley, which is the power connection means between the vehicle engine and the compressor, and preventing the loss of engine power and safety of other equipment. It is an essential safety device that can be planned.

However, the conventional coilless clutch device is not only complicated in structure and high in cost, but also difficult in assembly, which leads to complicated process and mass investment in mass production, especially in the condition of air conditioner parts (overload of over limit torque) In the case of torque limit operation due to occurrence, it was difficult to set the exact limit torque that meets the user's demand, and there was a problem in that the power was not cut off within the desired precise torque and time range.

That is, the conventional coilless clutch device has a structure in which the power is interrupted by breaking the rubber material when an abnormality occurs (overloading) after using the torque limit member using a rubber material,

Or constrains the spring by pressing and restrains its restraint by friction when abnormal torque occurs,

Alternatively, if an abnormality occurs (overloading) while protruding or bending a part of a general metal or spring material into the groove and causing it to be caught, there is a structure in which the jammed part is unfolded and released according to the limit torque.

Among them, when the torque limit member of rubber material is ruptured and the power is cut off, rubber crushing occurs, which increases friction and additional side effects such as noise and heat generation.

If a part of the general metal material is protruded / bent into the groove and then unfolded and dropped when an abnormality occurs (overload occurs), the friction and contact are maintained even in the state of mutual dropout (power cutoff). Additional losses are inevitable.

In the case of the conventional structure in which the restraint is released by friction when abnormal torque is generated while pressing the spring, the precise limit required is set as the adjustment of the strength of the friction which is quite difficult to adjust the accuracy when setting the limit torque range. Torque setting is difficult,

In the case of protruding or bending a part of spring material into the groove and then unfolding and falling off in case of abnormality (overload), it is difficult to set precise limit torque range in consideration of bending force, thickness and width of strong spring material. There was a problem.

In addition, the above-described conventional coilless clutch structures are inevitable for significant damage and fatal damage of the torque limit member and other parts during the required operation (coilless clutch) due to the generation of the limit torque. And, there was a problem that the cost burden due to the front replacement was very large.

In addition, there was also a problem that the coiled clutch was loosened when it was used for a long time, and was not over the specified limit torque or cut off the power even when a momentary short load was caught.

In addition, the structure is complicated and requires a lot of manufacturing process, the productivity is not only reduced, but also the failure is frequent, the cost burden due to the manufacturing, installation and maintenance is also very large problem is urgent improvement.

Accordingly, the present invention was devised to solve the above problems, and it is possible to set the limit torque range of the coilless clutch more simply and precisely, and to achieve the coupling in the planar state between the torque limit members. By providing the return function, more reliable and complete separation and isolation after coilless clutch operation (power cut off) are performed, and especially when abnormal torque occurs, elastic deformation of the local core material and high efficiency withdrawal due to some assembly tolerances (less cost burden) It is a technical task that focuses on providing a coilless clutch with a new structure that can be cut off locally only by damage to some parts), which can greatly contribute to cost loss and productivity improvement after operation.

The present invention for achieving the above technical problem in forming a coilless clutch of the air conditioner compressor for automobiles, the back plate 10 having a constant bearing force on one surface of the hub unit 600 coupled to the end of the rotating shaft 400 Fixed installation; On the bottom of the back plate 10, the guide plate 20 having one or more torque coupling portions 21 provided therein and the cover plate 30 for bottom support and lower finishing are sequentially provided in the hub unit 600. Tightly fixed with; Between the torque coupling part 21 of the guide plate 20 and the power connection part 700 on the rotary pulley 100, the normal power connection is maintained in the case of less than the limit torque, and the automatic power cut off immediately when the overload is exceeded. And at the same time connecting the arc spring 40 of the spring material which can be separated and automatically separated by its elasticity; It will include.

As described above, the automotive air conditioner compressor overtorque protection system of the present invention has a simple and low-cost configuration, and is easy to install in a narrow space with a light and thin plate type, and can be easily installed in a narrow space. Torque limit operation (power cut off) is possible at a more accurate time when limit torque occurs due to abnormality of the leather, and the torque limit operation according to the overload pressure is constant, and the torque limit operation required for each pressure is required to meet the requirements of users. This invention is easy to manufacture, and even after the torque limit operation, friction, noise, and debris due to damage are not generated at all.

The present invention is provided with a rotary pulley 100 connected to an automobile engine and a belt 500 in a housing 300 of the air conditioner compressor 200, and an air conditioner compressor 200 at an inner center of the air conditioner compressor housing 300. Compressor rotating shaft 400 is drawn from the inside is provided, the end of the rotary shaft 400 in the state in which the hub unit 600 is inserted into the shaft unit is separated from the hub unit 600 at regular intervals apart from the rotating pulley ( Between 100, the engine power of the vehicle is easily transmitted to the rotary shaft 400 through the rotary pulley 100 and at the same time necessary (when an overload occurs due to the abnormal torque of the compressor), the rotary pulley 100 In constructing the coilless clutch of the automotive air conditioner compressor to automatically cut off the power between the) and the rotary shaft 400,

Fixed to the back plate 10 having a predetermined support force on one surface of the hub unit 600 coupled to the end of the rotating shaft 400;

On the bottom of the back plate 10, the guide plate 20 having one or more torque coupling portions 21 provided therein and the cover plate 30 for bottom support and lower finishing are sequentially provided in the hub unit 600. Tightly fixed with;

Torque coupling portion 21 of the guide plate 20 fixed between the back plate 10 and the cover plate 30 and the power connection portion on the rotary pulley 100 spaced apart from the torque coupling portion 21 ( Between 700)

In the case of the limit torque or less, the normal power connection state is maintained, but if an overload is exceeded the limit torque is instantaneously automatic power cut off and elastically returned, and the torque coupling part 21 and the power connection part 700 of the rotary pulley 100 themselves. Connecting an arc spring made of spring material so as to be separated and separated automatically by elasticity; Was made into the characteristic summary.

Hereinafter, the detailed structure and operation description of each component are as follows.

First, the hub insertion groove 33, which is the same as the outer shape of the hub unit 600 so that the inner side of the cover plate 30 and the guide plate 20 can be installed in the state inserted in the hub unit 600 of the above-described configuration 23) is drilled, and a plurality of fixing grooves (32, 22) for easy fixing with the back plate 10 is drilled in the portion protruding in the hub insertion groove (33).

In addition, the hub unit 600 corresponding thereto has a plurality of back plate fixing grooves 11 formed to be easily fixed by the back plate 10 and fixing means (such as rivets, L),

The outer size and shape of the hub unit 600 is a diameter size that can be passed through the hub insertion grooves 33 and 23 which are perforated inside the cover plate 30 and the guide plate 20, respectively. Is designed.

In addition, the cover plate 30 is firmly supported by and supports the bottom surface of the torque coupling portion 21 formed on the guide plate 20 to be accommodated in the limit groove 21-1 of the torque coupling portion 21. A plurality of cover portions 12 are formed to prevent any detachment and scattering of the retaining spring 50 and the catching portion 41 of the arc spring 40.

A contact space 34 is provided between the cover part 12 and the cover part 12 in which the arc spring 40 is not overlapped with each other, and a predetermined space is allocated to be accommodated within the same thickness range.

And the outer shape of the top plate 10 of the upper side is preferably formed in the same shape and dimensions as the outer shape of the cover plate 30 as shown, but in some cases to ensure a more secure upper surface bearing force For the sake of clarity, the entire garden may be formed.

On the other hand, the guide plate 20 located between the back plate 10 and the cover plate 30 is provided with at least one torque coupling portion 21 at regular equiangular intervals within a certain radius from the center,

The torque coupling portion 21 has a perforated limit groove 21-1 in which the arc spring 40 one side locking portion 41 can be easily inserted and coupled, and wraps the circumference of the limit groove 21-1. The limit spring 21-2 having a constant elastic force and width, and the arc spring 40 coupled to the limit groove 21-1 while forming a shape that is bounced toward one side of the limit ring 21-2, When an overload occurs above the limit torque, the opening 21-3 is narrower than the diameter of the limit groove 21-1 to allow one side detachment through elastic deformation.

And the shape of the limit groove (21-1) formed in the torque coupling portion 21 is basically a garden shape, but when applied to a torque that is larger or higher than the required elastic deformation degree, depending on the situation, Of course, it can also be formed into a polygon such as hexagon, octagon.

In addition, inside the limit ring 21-2 of the torque coupler 21, the elastic deformation given to the limit ring 21-2 when the catching portion 41 of the arc spring 40 is detached due to the generation of the limit torque. As well as further forming one or more through holes 21-4 for appropriately adjusting the size and degree,

The one or more through-holes 21-4 absorb shocks and vibrations transmitted from the outside during the operation of the compressor to maintain and protect the safe coupling form from vibrations and shocks occurring below the limit torque, and in particular, the clutch in the stopped state. When absorbing the shock of the initial rapid rotation accompanying the initial operation and further interposed between the steel springs engaging portion 41, from the mutual direct bending prevention (removal of noise cause) and from the rotational inertia accompanying the sudden stop during the rotation operation The rubber piece rubber bumper (21-5) may be further fitted to absorb the coming impact.

Further, inside the limit groove 21-1, as shown in the drawing, one side engaging portion 41 of the arc spring 40 can be simultaneously accommodated within the same thickness range, and wears at a load below the limit torque. While maintaining a stable coupling state without overload the limit torque can be installed by inserting a separate high-efficiency retainer spring 50 to allow more elastic release of the arc spring engaging portion 41 while causing elastic deformation.

At this time, the retainer spring 50 is punched with a catching groove 51 in which one side catching portion 41 of the arc spring can be easily inserted and accommodated therein, as shown in the drawing.

On one side of the locking groove 51, while holding the arc spring locking portion 41 to be prevented from being separated below a certain limit torque, when the limit torque occurs, the diameter of the locking groove 51 can be separated while causing elastic deformation. Retainer spring side opening 52 is formed narrower than the

Both sides of the retainer spring-side opening 52 maintain a stable state without abrasion within the limit torque range, but when the arc spring catching portion 41 is disengaged due to a torque exceeding the limit range, a constant torque limit operation can be performed. Although it may be formed only with an angle or round corresponding to the angle, it is further provided with a protruding elastic protrusion 53 inducing a uniform distribution of elastic deformation that may occur when the arc spring engaging portion 41 is released due to the abnormal limit torque generation. It can also form more.

When it is inserted into the limit groove 21-1 of the limit coupling portion 21 is formed smaller than the inner diameter of the limit groove 21-1 so that sufficient elastic deformation occurs in the generated limit torque range when the limit torque occurs It is advantageous to have a tolerance gap 55 of constant size between the circumferences,

The size of the locking groove 51 is a diameter size that one side locking portion 41 of the arc spring can be easily accommodated, but this also the locking portion 41 of the arc spring according to the required limit torque degree Forming larger than the outer diameter of the arc spring engaging portion 41 is advantageously formed to have a constant clearance gap 56 therebetween,

In addition, at least one through hole 54 perforated so as to properly adjust the size and degree of elastic deformation given to the retainer spring when the retaining portion of the arc spring is separated from the retainer spring 50 due to the occurrence of the limit torque is further provided. Of course it can form,

The tolerance gap 55 between the retainer spring 50 and the limit groove 21-1 of the guide plate and the one or more through holes 54 absorb shocks and vibrations transmitted from the outside during the operation of the compressor to limit torque or less. In addition to maintaining and protecting a secure form from vibration and shocks occurring in the engine, in particular, when absorbing the shock of the initial rapid rotation accompanying the initial operation of the clutch in a stationary state, and furthermore, when it is fitted between the engaging portions of the arc springs in the retainer springs made of steel, Rubber-like rubber bumper 57 and the rubber-like rubber bumper 57 to avoid the occurrence of noise and to directly absorb both sides of the elastic deformation and shock absorption / distribution resulting from sudden inertia during rotation. The operation rubber bumper 58 can be further configured.

And the arc spring 40 is formed with a curvature of a predetermined size, such as the outer circumferential surface of the guide plate 20 to cover a portion of the outer circumferential surface of the guide plate 20, the end of the retaining spring 41 of the retainer spring While the engaging portion 41 is formed so as to be inserted and coupled together in the same thickness range), the other side of the fixing groove 42 to be easily coupled to the power connection portion 700 of the rotary pulley 100 This is formed,

At the same time, the inlet side of the protruding locking portion 41 may form a chamfer 43 having a certain inclination angle to have an easy insertion coupling without interference when inserted into the retainer spring 50, the fixing groove It is preferable to form the curvature portion 44 at the side end on which the 42 is formed so that the torque coupling portion 21 on the guide plate 20 can be assembled with each other.

1 is an exemplary view showing an embodiment of the present invention

Figure 2 is an exemplary view showing a preferred decomposition assembly flow chart of the present invention

Figure 3 is an exemplary view showing a retainer spring coupling relationship to the guide plate of the present invention

Figure 4 is an exemplary view showing a bottom coupled state of the present invention

Figure 5 is another exemplary embodiment according to the guide plate configuration of the present invention

Figure 6 is an illustration of another sealing state according to the retainer spring configuration of the present invention

Figure 7 is a plan view of the arc spring of the present invention

※ Code explanation for important part of drawing ※

10: Back Plate 11: Retaining Groove

12: cover 20: plate

21: engaging portion 21-1: limit groove

21-2: limit ring 21-3: opening

21-4: through hole 21-5: rubber bumper

22,32: fixed groove 23,33: hub insertion groove

30: cover plate 34: contact space

40: arc spring 41: engaging portion

42: fixing groove 43: chamfer

44: Curvature 50: Retainer Spring

51: locking groove 52: opening

53: elastic projection 54: through hole

55: clearance gap 56: clearance gap

57,58: Rubber bumper 100: Rotating pulley

200: compressor 300: housing

400: rotating shaft 600: hub unit

500: belt 700: power connection

Claims (9)

The housing 300 of the air conditioner compressor 200 is provided with a rotary pulley 100 connected to the vehicle engine and the belt 500, and the inner center of the air conditioner compressor housing 300 has an interior of the air conditioner compressor 200. Compressor rotating shaft 400 is drawn from the provided, the end portion of the rotating shaft 400 in the state in which the hub unit 600 is inserted into the shaft unit is separated from the hub unit 600 at regular intervals separated from the rotary pulley 100 Between the engine power of the vehicle to be easily transmitted to the rotating shaft 400 through the rotary pulley 100 and at the same time necessary (at the time of overload of the limit torque due to the abnormality of the compressor) and the rotary pulley 100 and In constructing a coilless clutch of an automotive air conditioner compressor to automatically cut off power between the rotary shafts 400, Fixed to the back plate 10 having a predetermined support force on one surface of the hub unit 600 coupled to the end of the rotating shaft 400; On the bottom of the back plate 10, the guide plate 20 having one or more torque coupling portions 21 provided therein and the cover plate 30 for bottom support and lower finishing are sequentially provided in the hub unit 600. Tightly fixed with; Between the torque coupling part 21 of the guide plate 20 and the power connection part 700 on the rotary pulley 100, the normal power connection is maintained in the case of less than the limit torque, and the automatic power cut off immediately when the overload is exceeded. And at the same time it is connected to the arc spring 40 of the spring material which can be separated and separated automatically by its elasticity; Coilless clutch device of an automotive air conditioner compressor characterized in that. The method of claim 1, On the guide plate 20 located between the back plate 10 and the cover plate 30, the torque coupling portion 21 is provided at least one at regular equiangular intervals within a certain radius from the center, Limit groove 21-1 which can be easily inserted and coupled to one side of the arc spring 40, and a limit ring having a constant elastic force and width while wrapping the circumference of the limit groove 21-1. (21-2) and the elastic spring when the arc spring (40) coupled to the limit groove (21-1) to form a form in which one side of the limit ring (21-2) is overloaded over the limit torque Coilless clutch device for an air conditioner compressor for a vehicle, characterized in that the opening 21-3 is narrower than the diameter of the limit groove (21-1) to allow one side separation through the deformation. 3. The method of claim 2, At least one through-hole 21-4 is provided on the inner surface of the limit ring 21-2 of the torque coupler 21, and at the same time, the rubber bumper 21-5 for absorbing shock in the through-hole 21-4. Additional optional configuration for each, The limit groove 21-1 of the torque coupler 21 can simultaneously accommodate the one end engaging portion 41 of the arc spring 40 within the same thickness range and is stable without abrasion at loads below the limit torque. Cars, characterized in that to install a separate retainer spring (50) to allow the elastic release of the arc spring engaging portion 41 while causing the elastic deformation when the overload is exceeded the limit torque while maintaining the coupling state Coilless clutch device of air conditioner compressor. The method of claim 3, wherein The retainer spring 50 is perforated with a catching groove 51 for allowing one side catching portion 41 of the arc spring to be easily inserted therein and at the same time, catching an arc spring at one side of the catching groove 51. Retainer spring-side opening that is held to a smaller size than the diameter of the locking groove 51 so as to restrain the portion 41 from being detached below a predetermined limit torque so as to be detached while causing the elastic deformation when the limit torque occurs. A coilless clutch device for an automotive air conditioner compressor, characterized in that 52) is formed. The method of claim 4, wherein Both sides of the retainer spring side opening 52 maintain a stable state without abrasion within the limit torque range, so that a constant torque limit operation can be performed when the arc spring catching portion 41 is released due to a torque exceeding the limit range. Although it may be formed only with an angle or round corresponding to the angle, the elastic protrusions 53 protruding so that the elastic deformation that can be generated when the arc spring engaging portion 41 is separated due to the abnormal limit torque generation can be given equally to both sides. A coilless clutch device of an automotive air conditioner compressor, characterized in that further formed. The method of claim 5, At least one through-hole 54 is formed in the retainer spring 50 so as to adjust the size and extent of elastic deformation given to the retainer spring when the engaging portion of the arc spring is separated from the limit spring. The tolerance gap 55 between the retainer spring 50 and the limit groove 21-1 of the guide plate and the one or more through holes 54 absorb shocks and vibrations transmitted from the outside during the operation of the compressor to limit torque or less. Maintains the coupling form from the vibration and shock generated in the system, absorbs the shock of the initial rapid rotation accompanied by the initial operation of the clutch, and further avoids the direct buoyancy phenomenon when the arc spring is fitted between the retainer springs made of steel. The rubber bumper 57 and the operation rubber bumper 58 are respectively added to eliminate the occurrence and to facilitate both sides of the elastic deformation and shock absorption / distribution resulting from the rotational inertia force accompanying the sudden stop during the rotational operation. Coilless clutch device for an automobile air conditioner compressor, characterized in that the coupling further configured. The method of claim 6, When the retainer spring 50 is inserted into the limit groove 21-1 of the limit coupling part 21, the limit groove 21-1 so that sufficient elastic deformation occurs in the generated limit torque range when the limit torque occurs. It is formed to have a smaller than the inner diameter of) to have a tolerance gap 55 of a constant size between the circumference, The inner catching groove 51 may be formed to be larger than the outer diameter of the catching portion 41 of the arc spring according to the degree of limit torque, while one side catching portion 41 of the arc spring can be easily inserted and accommodated. Coilless clutch device for an automotive air conditioner compressor, characterized in that configured to have a certain clearance gap 56 therebetween when the portion 41 is coupled. The method according to any one of claims 1 to 7, The arc spring 40 is formed with a curvature of a predetermined size as a whole, the protruding engaging portion 41 which is coupled to the engaging groove 51 of the limit groove 21-1 or the retainer spring 50 at one end thereof. Is formed, the other side of the coilless clutch device of the automotive air conditioner compressor, characterized in that the fixing groove 42 which can be coupled to the power connection portion 700 of the rotary pulley 100 is formed. The method of claim 8, The retaining portion 50 of the retainer spring 50 and the arc spring 40 inserted into the limit groove 21-1 is simultaneously accommodated within the thickness range of the guide plate 20 to further combine the thickness of the components. Coilless clutch device for an automotive air conditioner compressor characterized in that the rising factor of the car is not generated.

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