Electromagnetic clutch for automobile air conditioner

Abstract

The electromagnetic clutch for the automobile air conditioner comprises a transmission shaft, a clutch shell is connected to the outer side of one end of the transmission shaft in a sleeved mode, a coil installation frame is arranged on the side, away from the transmission shaft, of the clutch shell, and a magnetic induction coil is fixedly installed in the coil installation frame. A plurality of heat exchange fins which are distributed at equal intervals are arranged on the coil mounting frame and located on the outer side of the magnetic induction coil, cooling pipes are inserted into the heat exchange fins, the two ends of each cooling pipe penetrate through the coil mounting frame and extend to the outer side of the clutch shell, and a ball bearing is arranged on the side, away from the coil mounting frame, of the clutch shell; a driving disc is arranged on the outer side of the ball bearing, annular gear teeth are arranged on the outer side of the driving disc, and a rubber gasket is arranged on the outer side of the annular gear teeth. The electromagnetic clutch is high in heat dissipation efficiency, the risk that the coil is damaged due to overheating is effectively reduced, the transmission stability of the annular gear teeth and the transmission belt is good, the slipping phenomenon is avoided, and the transmission efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electromagnetic clutch, especially relates to the electromagnetic clutch for automobile air conditioner. BACKGROUND

[0002] The automobile air conditioner electromagnetic clutch is a power transmission device between the automobile engine and the automobile air conditioner compressor, and is generally composed of a belt pulley assembly, a coil assembly and a driving disc assembly. The automobile air conditioner electromagnetic clutch is a relatively typical mechatronic product, and the Chinese patent No. CN222102586U discloses an electromagnetic clutch for automobile air conditioner, which comprises a driving assembly, a belt pulley and a coil assembly. The driving assembly comprises a hub, a magnetic suction disc is arranged on the hub, a protruding part is arranged on the magnetic suction disc, a through hole is arranged on the hub, and a rivet extending to the protruding part on the magnetic suction disc is arranged in the through hole. An annular groove is arranged on the inner side wall of the hub, an annular sheet is arranged in the annular groove, and a friction layer is arranged on the annular sheet. The electromagnetic clutch structure has the following advantages and effects: the friction sheet is arranged on the driving assembly under specific size conditions, so that the normal arrangement of the friction sheet is ensured, and the normal work of the friction sheet is ensured. However, the belt pulley structure of the electromagnetic clutch is simple, the flatness of the joint surface and the uneven distribution of the friction force are prone to cause slipping, the power transmission efficiency is reduced, the heat dissipation mode of the electromagnetic clutch is single, mainly relying on natural air cooling, when the vehicle runs at high speed for a long time or the air conditioning system operates at high load, the heat generated by the coil cannot be dissipated in time, the temperature of the coil is too high, the working performance of the electromagnetic clutch is affected, and even the coil is burned out. UTILITARIAN CONTENT

[0003] In order to solve the above problems, the utility model provides an electromagnetic clutch for automobile air conditioner. The utility model solves the problems of the simple belt pulley structure of the traditional electromagnetic clutch, the uneven distribution of the friction force of the joint surface, the easy occurrence of slipping, the reduction of the power transmission efficiency, the single heat dissipation mode of the electromagnetic clutch, the reliance on natural air cooling, the inability of the coil to dissipate heat in time when the vehicle runs at high speed for a long time or the air conditioning system operates at high load, the high temperature of the coil, the influence on the working performance of the electromagnetic clutch, and the coil burning out and other faults.

[0004] The utility model discloses an electromagnetic clutch for automobile air conditioner, including transmission shaft, the transmission shaft one end outside sleeve coupling has the clutch shell, the clutch shell is equipped with the coil mounting bracket away from transmission shaft one side, fixedly installed with the magnetic induction coil in the coil mounting bracket, the coil mounting bracket is equipped with a plurality of equidistance arrangement's heat exchange fin outside magnetic induction coil, is inserted with cooling pipe in the heat exchange fin, the cooling pipe both ends are extended to the clutch shell outside through the coil mounting bracket, the clutch shell is equipped with the ball bearing away from the coil mounting bracket one side, the ball bearing outside is equipped with the driving disc, the driving disc outside is equipped with the ring gear, the ring gear outside is equipped with the rubber washer, is equipped with the compression ring between the clutch shell and the driving disc.

[0005] In the above scheme, the driving disc is equipped with the front end cover away from the compression ring one side.

[0006] In the above scheme, the first sealing ring is equipped between the front end cover and the ball bearing.

[0007] In the above scheme, the second sealing ring is equipped away from the first sealing ring one side of the ball bearing.

[0008] In the above scheme, the clutch shell is equipped with four matrix arrangement's locating rod near the compression ring one side, and the compression ring is equipped with the locating hole matched with the locating rod.

[0009] In the above scheme, the clutch shell is equipped with the rear end cover away from the driving disc one side.

[0010] In the above scheme, the heat exchange fin is the metal copper plate

[0011] The utility model discloses an electromagnetic clutch for automobile air conditioner, and the cooling pipe is inserted in the heat exchange fin, and the cooling pipe both ends are extended to the clutch shell outside through the coil mounting bracket.This design forms a set of efficient heat dissipation structure, and the cooling liquid circulating in the cooling pipe can quickly take away the heat generated by the magnetic induction coil, and the heat is dissipated to the surrounding environment through the heat exchange fin, which greatly improves the heat dissipation efficiency, and the setting of the rubber washer can effectively buffer the vibration and impact in the power transmission process, enhance the stability of power transmission, and the rubber washer is matched with the ring gear, and the rubber washer effectively increases the friction between the transmission belt and the ring gear, avoiding the slipping phenomenon between the transmission belt and the ring gear.The electromagnetic clutch has simple structure, and the cooling pipe is combined with the heat exchange fin, forms an efficient liquid cooling heat dissipation system, greatly improves the heat dissipation efficiency of the electromagnetic clutch, effectively reduces the risk of coil damage due to overheating, and the transmission stability of the ring gear and the transmission belt is good, avoiding the slipping phenomenon between the transmission belt and the ring gear, and improving the transmission efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0013] Fig. 1 It is a structural schematic view of the present application;

[0014] Fig. 2 It is a sectional view of the present application;

[0015] Fig. 3 It is a structural schematic view of part A of the present application.

[0016] In the figure: 1, transmission shaft 2, clutch housing 3, coil mounting frame 4, magnetic induction coil 5, heat exchange fin 6, cooling pipe 7, ball bearing 8, driving disc 9, ring gear 10, rubber washer 11, press ring 12, front end cover 13, first sealing ring 14, second sealing ring 15, positioning rod 16, positioning hole 17, rear end cover. DETAILED DESCRIPTION

[0017] The specific embodiments of the present application will be further described below with reference to the drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and cannot limit the protection scope of the present application.

[0018] As Figs. 1-3The utility model discloses an electromagnetic clutch for automobile air conditioner, including transmission shaft 1, the transmission shaft 1 one end outside sleeve joint has clutch housing 2, the clutch housing 2 is away from transmission shaft 1 one side and is equipped with coil mounting bracket 3, fixedly installed with magnetic sensing coil 4 in coil mounting bracket 3, a plurality of equidistance arrangement's heat exchange fin 5 is equipped with in coil mounting bracket 3 located magnetic sensing coil 4 outside, the heat exchange fin 5 is inserted with cooling pipe 6, cooling pipe 6 both ends are extended to clutch housing 2 outside through coil mounting bracket 3, the heat exchange fin 5 is inserted with cooling pipe 6, cooling pipe 6 both ends are extended to clutch housing 2 outside through coil mounting bracket 3. This design forms a set of high -efficient heat dissipation structure, and the cooling liquid that circulates in cooling pipe 6 can quickly take away the heat generated by magnetic sensing coil 4, and the heat is dissipated to the surrounding environment through heat exchange fin 5, which greatly improves the heat dissipation efficiency, the clutch housing 2 is away from coil mounting bracket 3 one side and is equipped with ball bearing 7, the ball bearing 7 outside is equipped with driving disc 8, the driving disc 8 outside is equipped with ring gear 9, the ring gear 9 outside is equipped with rubber washer 10, the clutch housing 2 with driving disc 8 between being equipped with compression ring 11, the setting of rubber washer 10 can effectively buffer the vibration and impact in the process of power transmission, and the stability of power transmission is enhanced, and simultaneously rubber washer 10 and ring gear 9 are pasted, and rubber washer 10 effectively increases the friction between the drive belt and ring gear 9, and the phenomenon that the drive belt and ring gear 9 appear slip is avoided. Clutch housing 2 with driving disc 8 between being equipped with compression ring 11, and compression ring 11 plays the role of fixing and adjusting the position of driving disc 8, when magnetic sensing coil 4 works, magnetic sensing coil 4 generates magnetic force, and compression ring 11 is driven by magnetic sensing coil 4 to move in the horizontal direction, so that the working state of driving disc 8 can be controlled through compression ring 11.

[0019] The driving disc 8 is away from the compression ring 11 one side and is equipped with the front end cover 12, the front end cover 12 can seal the end of the driving disc 8, and dust and other impurities can be effectively prevented from entering the clutch.

[0020] The front end cover 12 and the ball bearing 7 are equipped with the first sealing ring 13.

[0021] The ball bearing 7 is away from the first sealing ring 13 one side and is equipped with the second sealing ring 14, and the first sealing ring 13 and the second sealing ring 14 can seal the two ends of the ball bearing 7, which can effectively prevent the leakage of lubricating oil and prevent foreign matters from entering the ball bearing 7, thereby ensuring the normal operation of the ball bearing 7.

[0022] The clutch housing 2 is provided with four positioning rods 15 arranged in a matrix near the side of the compression ring 11, the compression ring 11 is provided with positioning holes 16 matched with the positioning rods 15, and the positioning rods 15 are inserted into the positioning holes 16, so that the positioning rods 15 can guide the compression ring 11, and the mutual cooperation between the positioning rods 15 and the positioning holes 16 effectively guarantees the movement stability of the compression ring 11.

[0023] The clutch housing 2 is provided with a rear end cover 17 away from the driving disc 8, and the rear end cover 17 further protects the internal components of the clutch.

[0024] In the scheme, the heat exchange fins 5 are copper plates, and the magnetic induction coil 4 of the clutch is wound with high-purity copper enameled wire, which can effectively reduce the coil resistance and improve the electromagnetic conversion efficiency; meanwhile, in the heat dissipation process, the copper wire can quickly transfer the heat generated by the coil to the surrounding environment. For the cooling pipe 6, a metal copper pipe is selected because of its good thermal conductivity, so that the cooling liquid can more efficiently absorb the surrounding heat when flowing in the pipe and take it away; in combination with the heat exchange fins 5, the efficiency of the entire heat dissipation system is further improved, so that the electromagnetic clutch can better maintain an appropriate temperature during operation and ensure stable operation.

[0025] Specifically, in the utility model, the cooling pipe 6 is inserted into the heat exchange fins 5 and extends to the outside of the clutch housing 2 through the coil mounting frame 3 at both ends. This design forms a set of efficient heat dissipation structure, the cooling liquid flowing in the cooling pipe 6 can quickly take away the heat generated by the magnetic induction coil 4, and the heat is dissipated to the surrounding environment through the heat exchange fins 5, greatly improving the heat dissipation efficiency. The setting of the rubber gasket 10 can effectively buffer the vibration and impact in the power transmission process, and enhance the stability of power transmission. At the same time, the rubber gasket 10 is in close contact with the ring gear 9, and the rubber gasket 10 effectively increases the friction between the drive belt and the ring gear 9, avoiding the phenomenon of slipping between the drive belt and the ring gear 9. When the automobile air conditioning system needs to start, the current passes through the magnetic induction coil 4, the magnetic induction coil 4 generates a magnetic field, the magnetic field repels the compression ring 11 to move to the side of the magnetic induction coil 4, the compression ring 11 pressurizes the driving disc 8, and through the mutual force between the compression ring 11 and the driving disc 8, the driving disc 8 can rotate under the drive of the external transmission assembly through the ring gear 9. The power is transmitted to the drive shaft 1 through the driving disc 8, and then drives the air conditioner compressor to work. In this process, due to the installation of the rubber gasket 10, the power transmission is more stable, the vibration and impact are reduced, and the stability of transmission is ensured. When the air conditioning system does not need to work, the current of the magnetic induction coil 4 is cut off, the magnetic field disappears, and the driving disc 8 is separated from the external power source under the action of the reset spring in the driving disc 8, so that the air conditioner compressor stops working.

[0026] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. Electromagnetic clutch for automotive air conditioning comprising a transmission shaft (1), characterized in that, The transmission shaft (1) one end outside sleeve clutch housing (2), the clutch housing (2) away from the transmission shaft (1) side is equipped with coil mounting bracket (3), the coil mounting bracket (3) is fixedly installed with magnetic induction coil (4) in, the coil mounting bracket (3) is located outside the magnetic induction coil (4) is equipped with a plurality of equidistant arrangement of heat exchange fin (5), the heat exchange fin (5) is inserted with cooling pipe (6), the cooling pipe (6) both ends extend to the clutch housing (2) outside through the coil mounting bracket (3), the clutch housing (2) away from the coil mounting bracket (3) side is equipped with ball bearing (7), the ball bearing (7) outside is equipped with driving disc (8), the driving disc (8) outside is equipped with ring gear (9), the ring gear (9) outside is equipped with rubber washer (10), the clutch housing (2) and driving disc (8) between is equipped with compression ring (11).

2. The electromagnetic clutch for use in an air conditioner for an automobile according to claim 1, characterized by The driving disc (8) away from the compression ring (11) side is equipped with front end cover (12).

3. The electromagnetic clutch for use in an automotive air conditioner according to claim 2, characterized by The front end cover (12) and ball bearing (7) between is equipped with first sealing ring (13).

4. The electromagnetic clutch for use in an automotive air conditioner according to claim 3, characterized by The ball bearing (7) away from the first sealing ring (13) side is equipped with second sealing ring (14).

5. The electromagnetic clutch for use in an automotive air conditioner according to claim 1, characterized by, The clutch housing (2) is equipped with four matrix arrangement of positioning rod (15) near the compression ring (11) side, the compression ring (11) is equipped with positioning hole (16) matched with positioning rod (15).

6. The electromagnetic clutch for use in an automotive air conditioner according to claim 1, characterized by The clutch housing (2) away from the driving disc (8) side is equipped with rear end cover (17).

7. The electromagnetic clutch for use in an automotive air conditioner according to claim 1, characterized by The heat exchange fin (5) is copper plate.

Images