Belt pulley of one-way clutch of automobile air conditioner

Abstract

The utility model discloses an automobile air conditioner one-way clutch belt pulley which comprises a belt pulley body, two belt grooves are formed in the belt pulley body, strip-shaped protrusions which are of strip-shaped cambered surface structures and used for conducting transmission friction high temperature on a belt are evenly arranged on the periphery of the bottom face in each belt groove, and an air channel groove is formed between the strip-shaped protrusions. In the process that a belt drives the screen belt wheel to conduct transmission in the belt groove, the face, making contact with the belt groove, of the inner side of the belt is supported by the evenly-arranged strip-shaped protrusions, a certain space gap can be formed, under the condition that the belt wheel rotates between the space gap and the air channel groove, external airflow can enter the face of the belt and the belt groove, and therefore the screen belt wheel is driven to conduct transmission. And the cooling of the belt can reduce the occurrence of the problem that the belt expands and loosens and slips at a high temperature, so that the belt pulley can continuously work for a long time, and the transmission efficiency between the belt and the belt pulley is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air-conditioning clutch pulleys, and particularly relates to an automotive air-conditioning one-way clutch pulley. Background Art

[0002] Automotive air conditioners are used to adjust and control the temperature, humidity, air cleanliness and air flow in the automotive cabin to the optimal state, providing a comfortable riding environment for passengers and reducing travel fatigue; creating good working conditions for drivers and playing an important role in ensuring safe driving; generally including a refrigeration device, a heating device and a ventilation and air exchange device; this combined device makes full use of the limited space inside the vehicle, has a simple structure and is easy to operate. However, in the high temperature in summer, the temperature of the existing clutch pulley will rise significantly due to the high-power operation of the automotive air conditioner, the high temperature of the automotive engine and the temperature in the environment, which greatly increases the aging speed of the belt and is prone to breakage during high-speed rotation.

[0003] Therefore, an automotive air-conditioning one-way clutch pulley with the publication number of "CN213598535U" includes a pulley body, fasteners, a heat dissipation fixing cover, a heat dissipation collection chamber, a phase change liquid, a first heat dissipation fin, a second heat dissipation fin, a fan fixing cover, a support plate, a rotation fixing cover, a torsion spring, a ball bearing, a heat dissipation fan blade and a safety protection net; the side surface of the pulley body is detachably fixed with a heat dissipation fixing cover through openings and a plurality of fasteners; a plurality of second heat dissipation fins and a heat dissipation collection chamber are fixed on the inner wall of the heat dissipation fixing cover; the heat dissipation collection chamber is filled with a phase change liquid; a plurality of first heat dissipation fins are fixed on the surface of the heat dissipation collection chamber; it realizes the function of high-efficiency static heat dissipation of the pulley, solves the problem of poor static heat dissipation effect of the traditional pulley, and improves the static heat dissipation efficiency of the pulley; it realizes the function of high-efficiency dynamic heat dissipation, solves the problem of no dynamic heat dissipation of the traditional pulley, and improves the dynamic heat dissipation efficiency of the pulley.

[0004] However, for the above-mentioned automotive air-conditioning one-way clutch pulley, although a plurality of first heat dissipation fins are fixed on the right side of the heat dissipation collection chamber, through the cooperation of the phase change liquid box and the heat dissipation collection chamber, the pulley can absorb the heat generated by the pulley body during operation and dissipate the heat through a plurality of first heat dissipation fins. There are still the following obvious defects during use: the inner surface of the belt groove in the above pulley is a smooth surface. When the belt drives the pulley to rotate, since the belt is completely fitted in the belt groove, the belt will expand and become larger due to high temperature, so it is easy to occur that the belt slips in the belt groove and cannot drive the pulley to rotate. Moreover, the heat dissipation structure set above cannot achieve the effect of cooling the belt because the pulley is made of cast iron and has slow heat conduction. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a one-way clutch pulley for an automotive air conditioner to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present utility model provides the following technical solution: A one-way clutch pulley for an automotive air conditioner, comprising:

[0007] A pulley, on which two belt grooves are provided for belt transmission to drive the automotive air conditioner clutch. The inner bottom surface of the belt groove is uniformly provided with strip-shaped protrusions in a circumferential direction, which are in a strip-shaped arc surface structure and are used for driving friction and high temperature of the belt. And air duct grooves are formed between the strip-shaped protrusions;

[0008] A shaft kit, which is fixedly inserted into the shaft cavity of the pulley. And channel grooves are uniformly provided on the outer surface of the shaft kit. One side of the pulley is fixed with an aluminum disk by screws, and diversion air grooves are uniformly provided on the surface of the aluminum disk, which are in an arc structure and are used for the rotation of the pulley to make air enter the channel grooves.

[0009] Preferably, ventilation hole positions penetrating through to the inner shaft cavity of the pulley are uniformly provided horizontally on the inner side of the air duct grooves formed between the strip-shaped protrusions, so that when the belt is in the belt groove, a certain clearance cavity is formed between the two for ventilation.

[0010] Preferably, air duct cavities for the rotating air flow of the pulley to enter the inside of the belt groove from the side are provided throughout the circumference of the inner side wall of the belt groove, so that when the pulley rotates, the inertia of its rotation is used to make the air flow enter the air duct cavity and then enter the belt groove.

[0011] Preferably, a rotating shaft cavity is provided throughout the inner side of the pulley, and the shaft kit is fixedly connected and fixed inside the rotating shaft cavity to realize the connection and fixation of the shaft kit.

[0012] Preferably, rotating bearing parts are provided on both sides inside the shaft kit, and a shaft support steel sleeve is provided between the rotating bearing parts to effectively and uniformly support and fix the main shaft part.

[0013] Preferably, a shaft hole for the shaft kit to pass through is provided in the middle of the aluminum disk, and one end of the diversion air groove penetrates to the inside of the shaft hole, and the other end of the diversion air groove penetrates to the outer side of the aluminum disk, so that the rotating pulley drives the aluminum disk to rotate and makes the air flow enter the diversion air groove and then reach the surface of the shaft kit.

[0014] Preferably, locking hole positions are provided in a circumferential direction on the edge side of the surface of the aluminum disk, and locking bolts for locking and fixing the aluminum disk on one side of the pulley are inserted into the locking hole positions to realize the installation and disassembly of the aluminum disk.

[0015] Preferably, a main shaft for rotating the automotive air-conditioning clutch is inserted into the rotating bearing member and the shaft support steel sleeve, which is beneficial for installing the belt on the rotating shaft of the automotive air-conditioning clutch.

[0016] Compared with the prior art, the technical effects and advantages of the present utility model are as follows: For this automotive air-conditioning one-way clutch pulley, through the belt groove formed in the pulley, and the strip-shaped protrusions evenly arranged in the belt groove, and the air duct grooves formed between the strip-shaped protrusions, when the belt drives the pulley to rotate in the belt groove, the side of the belt in contact with the belt groove is supported by the evenly arranged strip-shaped protrusions, thus forming a certain space gap. And when the pulley rotates, the external air flow can enter the side between the belt and the belt groove through the space gap and the air duct grooves, so as to cool and dissipate heat between the belt and the belt groove. Moreover, the cooling of the belt can reduce the problems of high-temperature expansion, relaxation and slipping of the belt, so that the pulley can continuously work for a long time, and further improve the transmission efficiency between the belt and the pulley.

[0017] Through the shaft kit inserted into the rotating shaft cavity, and the channel grooves provided on the surface of the shaft kit in contact with the rotating shaft cavity, and the connection between the channel grooves and the ventilation hole positions, and when the aluminum disc rotates in cooperation with the guiding of the air guiding groove, during the rotation of the pulley, the aluminum disc rotates accordingly, so that the air flow flows through the air guiding groove to the ventilation hole positions and then into the rotating shaft cavity, and then enters the air duct groove through the ventilation hole positions. Thus, during the rotation of the pulley, the external air flow can flow into the entire pulley for ventilation, reducing the phenomenon of high temperature of the pulley, and enabling the air flow to penetrate the pulley made of cast iron material for cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic front sectional structural diagram of the present utility model;

[0020] Figure 3 is a schematic side view structural diagram of the belt groove of the present utility model;

[0021] Figure 4 is a schematic side view structural diagram of the aluminum disc of the present utility model.

[0022] In the figure: 1, pulley; 2, belt groove; 3, strip-shaped protrusion; 4, air duct groove; 5, shaft kit; 6, channel groove; 7, aluminum disc; 8, air guiding groove; 9, ventilation hole position; 10, air duct cavity; 11, rotating shaft cavity; 12, rotating bearing member; 13, shaft support steel sleeve; 14, shaft hole; 15, locking hole position. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1-4 , the present invention provides a technical solution: a one-way clutch pulley for an automotive air conditioner, comprising:

[0025] A pulley 1, on which two pulley grooves 2 are provided for belt transmission to drive the automotive air conditioner clutch. The belt can be sleeved into the pulley grooves 2 to drive the pulley 1 to rotate. The inner bottom surface of the pulley groove 2 is uniformly provided with strip-shaped protrusions 3 having a strip-shaped arc surface structure and used for frictional heat transmission of the belt, which plays a role in supporting the inner side of the belt in the pulley groove 2 to form a space. And an air duct groove 4 is formed between the strip-shaped protrusions 3, so that the airflow when the pulley 1 rotates is poured into the air duct groove 4 to flow through and reduce the friction force;

[0026] A shaft kit 5, which is fixedly inserted into the shaft cavity of the pulley 1 so that the shaft kit 5 is stably fixed inside the pulley 1. And the outer surface of the shaft kit 5 is uniformly provided with channel grooves 6, so that the external airflow is introduced into the channel grooves 6 and enters the inner cavity of the pulley 1 for ventilation and cooling. One side of the pulley 1 is fixed with an aluminum disc 7 by screws, and the surface of the aluminum disc 7 is uniformly provided with diversion air grooves 8 having an arc structure for allowing the wind to enter the channel grooves 6 when the pulley 1 rotates, so that when the pulley 1 rotates, the external airflow can enter the inside of the pulley 1 through the diversion air grooves 8.

[0027] The inner side of the air duct groove 4 formed between the strip-shaped protrusions 3 is horizontally and uniformly provided with ventilation hole positions 9 penetrating through the inner shaft cavity of the pulley 1, which can enable the airflow entering the air duct groove 4 to enter the ventilation hole positions 9 and then enter the pulley groove 2. The inner side wall of the pulley groove 2 is provided with an air duct cavity 10 penetrating through the circumference for allowing the airflow generated by the rotation of the pulley 1 to enter the inside of the pulley groove 2 from the side, which can enable the heat generated by the pulley 1 to be discharged to the outside through the air duct cavity 10 to achieve the effect of cooling. The inner side of the pulley 1 is provided with a rotating shaft cavity 11, and the shaft kit 5 is fixedly inserted and fixed inside the rotating shaft cavity 11. Rotating bearing parts 12 are provided on both sides inside the shaft kit 5, and a shaft support steel sleeve 13 is provided between the rotating bearing parts 12, which is beneficial to achieving a stable support effect when the main shaft part is inserted and fixed and using the shaft support steel sleeve 13.

[0028] The middle part of the aluminum disc 7 is provided with an axis hole 14 for the shaft sleeve 5 to pass through, and one end of the guide air groove 8 passes through the inner side of the axis hole 14, and the other end of the guide air groove 8 passes through the outer side of the aluminum disc 7. The surface of the aluminum disc 7 is provided with a locking hole 15 around the side, so that the aluminum disc 7 can be installed on one side of the pulley 1 to guide and absorb heat. The locking hole 15 is penetrated by a locking bolt that locks the aluminum disc 7 to one side of the pulley 1. The main shaft component that rotates the automobile air-conditioning clutch is penetrated into the rotating bearing component 12 and the shaft support steel sleeve 13, so as to realize the transmission fixed connection between the rotating shaft component and the pulley 1.

[0029] Specifically, when in use, first install the pulley 1 on the main shaft of the automobile air-conditioning clutch, and put the belt into the belt groove 2, and use the strip protrusion 3 for support. At the same time, when the automobile air-conditioning clutch is working, the main shaft drives the pulley 1 to rotate. When the pulley 1 rotates, the aluminum disc 7 is rotated with a high degree, so that the air flow passes through the guide groove 8 and flows into the channel groove 6. The air flow flows into the channel groove 6 and flows into the rotating shaft cavity 11 through the ventilation hole position 9 to enter the air duct groove 4, and the air flow flows in the air duct cavity 10, so that the external air flow can flow to the entire pulley 1 during its rotation. The pulley 1 is ventilated to reduce the high temperature of the pulley 1, so that the air flow can penetrate the cast iron pulley 1 to cool it down. The side of the inner side of the belt that contacts the belt groove 2 is supported by evenly arranged strip protrusions 3 to form a certain space gap. When the pulley 1 rotates, the external air flow can enter the side of the belt and the belt groove 2 between the space gap and the air duct groove 4 to cool and dissipate the heat between the belt and the belt groove 2. The cooling of the belt can reduce the problem of high-temperature expansion, relaxation and slipping of the belt, so that the pulley 1 can continue to work for a long time.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A one-way clutch pulley for an automobile air conditioner, characterized in that: Comprising: A pulley (1), on which there are two pulley grooves (2) for belt drive to drive the automotive air-conditioning clutch. The inner bottom surface of the pulley groove (2) is evenly provided with strip-shaped protrusions (3) having a strip-shaped arc surface structure and used for driving friction and high temperature of the belt, and an air duct groove (4) is formed between the strip-shaped protrusions (3); A shaft kit (5) is fixedly inserted into the shaft cavity of the pulley (1), and channel grooves (6) are evenly provided on the outer surface of the shaft kit (5). An aluminum disc (7) is fixed to one side of the pulley (1) by screws, and guide air grooves (8) having an arc structure are evenly provided on the surface of the aluminum disc (7) and used for allowing air to enter the channel grooves (6) when the pulley (1) rotates; 2. The one-way clutch pulley of an automotive air conditioner according to claim 1, wherein: Ventilation hole positions (9) penetrating through to the inner shaft cavity of the pulley (1) are evenly provided horizontally on the inner side of the air duct groove (4) formed between the strip-shaped protrusions (3); 3. The one-way clutch pulley of an automotive air conditioner according to claim 1, characterized in that: An air duct cavity (10) for allowing the rotating air flow of the pulley to enter the inside of the pulley groove (2) from the side is provided through the entire circumference of the inner side wall of the pulley groove (2); 4. The one-way clutch pulley of an automotive air conditioner according to claim 1, wherein: A rotating shaft cavity (11) is provided through the inside of the pulley (1), and the shaft kit (5) is fixedly connected and inserted into the inside of the rotating shaft cavity (11); 5. The one-way clutch pulley of an automotive air conditioner according to claim 1, wherein: Rotating bearing members (12) are provided on both sides inside the shaft kit (5), and a shaft support steel sleeve (13) is provided between the rotating bearing members (12); 6. The one-way clutch pulley of an automotive air conditioner according to claim 1, characterized in that: A shaft hole (14) for allowing the shaft kit (5) to pass through is provided in the middle of the aluminum disc (7), one end of the guide air groove (8) penetrates to the inside of the shaft hole (14), and the other end of the guide air groove (8) penetrates to the outer surface of the aluminum disc (7); 7. The one-way clutch pulley of an automotive air conditioner according to claim 1, wherein: Locking hole positions (15) are provided around the edge of the surface of the aluminum disc (7), and locking bolts for locking and fixing the aluminum disc (7) to one side of the pulley (1) are inserted into the locking hole positions (15); 8. The one-way clutch pulley for an automotive air conditioner according to claim 5, characterized in that: A main shaft member for rotating the automotive air-conditioning clutch is inserted into the rotating bearing members (12) and the shaft support steel sleeve (13).

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